DATASHEET
ISL59601, ISL59602, ISL59603, ISL59604, ISL59605
FN6739
Rev.3.00
May 22, 2019
MegaQ™: An Automatic Composite Video Equalizer, Fully-Adaptive
to 1 Mile (1600m)
The ISL59601, ISL59602, ISL59603, ISL59604, and
ISL59605 (the “MegaQ™” product family) are single-channel
adaptive equalizers designed to automatically compensate for
long runs of Cat 5/6 or RG-59 cable, producing high quality
video output with no user interaction. The ISL59601 equalizes
Cat 5/6 up to a distance of 1000 feet (300 meters), while the
ISL59605 equalizes up to 5300 feet (1600 meters).
Features
MegaQ™ compensates for high frequency cable losses of up to
60dB (ISL59605) at 5MHz as well as source amplitude
variations up to ±3dB.
• Automatic Cable Type Compensation
• ISL59605 Equalizes Up to 1 Mile (1600m) of Cat 5/6 and Up
to 6000 Feet (1800m) of RG-59
• Fully Automatic, Stand-Alone Operation - No User
Adjustment Required
• ±8kV ESD Protection on All Inputs
• Compatible with Color or Monochrome, NTSC or PAL Signals
• Automatic Polarity Detection and Inversion
The ISL59601, ISL59602, ISL59603, ISL59604, and
ISL59605 operate from a single +5V supply. Inputs are
AC-coupled and internally DC-restored. The output can drive
2VP-P into two source-terminated 75Ω loads (AC-coupled or
DC-coupled).
• Compensates for ±3dB Source Variation (in Addition to
Cable Losses)
• Optional Serial Interface Adds Additional Functionality
• 5MHz -3dB Bandwidth
Related Literature
• Works with Single-Ended or Differential Inputs
• AN1775 “ISL59605-SPI-EVALZ Evaluation Board (with Serial
Interface) Operation” (Evaluation Board with USB Serial
Interface)
• Output Drives Up to Two 150Ω Video Loads
Applications
• Surveillance Video
• Video Distribution
Typical Application
NTSC, PAL, OR
MONOCHROME CAMERA/
VIDEO SOURCE
PASSIVE
BALUN
Application Circuit for Cat x Cable
1.0µF
IN+
50
50
UP TO 1 MILE OF
CAT-5/6 CABLE
1k
1.0µF
GND
ISL59601
ISL59602
ISL59603
ISL59604
ISL59605
75.0
OUT
CFB
300
0.047µF
1500pF
IN-
TV/DVR
V CC
Application Circuit for Coaxial Cable
0.1µF
N TSC, PAL, O R
M ON O CHRO M E CAM ERA /
VIDEO SOU RCE
10k
1.0µF
IN +
37.5
0 TO 6000 FEET OVER RG-59
CO PPER -CORE CO AXIAL CABLE
37.5
0.1µF
FN6739 Rev.3.00
May 22, 2019
1k
1.0µF
GND
IN -
ISL59601
ISL59602
ISL59603
ISL59604
ISL59605
75.0
OU T
CFB
300
0.047µF
1500pF
TV/DVR
Page 1 of 29
ISL59601, ISL59602, ISL59603, ISL59604, ISL59605
Pin Configuration
SD
SCK
SEN
GND
FREEZE
ISL59601, ISL59602, ISL59603, ISL59604, ISL59605
(20 LD QFN)
TOP VIEW
20
19
18
17
16
GND
1
15 VREF
VDD1
2
IN+
3
GND
4
12 CFB
IN-
5
11 VDD2
14 GND
THERMAL
PAD
(SOLDER TO GND)
8
9
10
COLOR
INVERT
LOCKED
7
EQ_DISABLE
GND
6
13 VIDEO OUT
Block Diagram
CLAMP AND
IN+
DIFFERENTIAL TO
IN-
SINGLE-ENDED
EQUALIZER
AMP
LPF
VIDEO OUT
CONVERTER
CFB
VREF
SD
SCK
SEN
FREEZE
INVERT
COLOR
EQ_DISABLE
VREF
FN6739 Rev.3.00
May 22, 2019
LOCKED
DIGITAL INTERFACE
GEN
Page 2 of 29
ISL59601, ISL59602, ISL59603, ISL59604, ISL59605
Pin Descriptions
PIN NUMBER
PIN NAME
DESCRIPTION
3
IN+
High impedance analog input. This is the positive differential video input. Input signals are externally AC-coupled with
an external 1.0µF capacitor. See Applications Information section for information regarding input network for Cat x
and coax cables.
5
IN-
High impedance analog input. This is the negative differential video input. Input signals are externally AC-coupled
with an external 1.0µF capacitor. See Applications Information section for information regarding input network for
Cat x and coax cables.
12
CFB
Analog input. Bypass to ground with a 1500pF capacitor and connect to VIDEO OUT via a 0.047µF capacitor in series
with a 300resistor.
INPUTS
OUTPUTS
13
VIDEO OUT
Single-ended video output. The internal AGC sets this level to 2VP-P for a nominal 1VP-P (pre-cable) video source.
DIGITAL I/O
7
EQ_DISABLE
Digital Input. Equalizer Disable.
0: Normal Operation
1: Disables the equalizer to allow for insertion of upstream data onto the signal path, e.g. RS-485.
This pin must be asserted high or low. Do not float this pin.
8
COLOR
Digital I/O. Color Indicator/Override.
0: Monochrome
1: Color
When used as an output, this pin indicates whether the incoming signal does or does not have a colorburst. When
used as an input, this pin forces the state machine to into monochrome or color mode. See Figure 49 and associated
text for more information on functionality.
When COLOR is not externally driven, it is an output pin with a 13k (typical) output impedance. It is capable of driving
5V, high-impedance CMOS logic.
Note: The COLOR indicator may be invalid for monochrome signals over greater than ~4800 feet. The device will still
equalize properly if this occurs.
9
INVERT
Digital I/O. Polarity Indicator/Override.
0: Nominal Polarity.
1: Inverted Polarity.
When used as an output, this pin indicates the polarity of the incoming signal. When used as an input, this pin
controls whether or not the input signal is inverted in the signal chain. See Figure 48 and associated text for more
information on functionality.
When INVERT is not externally driven, it is an output pin with a 13k (typical) output impedance. It is capable of driving
5V, high-impedance CMOS logic.
In stand-alone mode, toggling this pin high-low-high or low-high-low will make the equalizer reacquire the signal.
10
LOCKED
Digital Output.
0: Signal is not equalized (or not present).
1: Signal is equalized and settled.
Note: The LOCKED indicator may be invalid for monochrome signals over greater than ~4800 feet. The device will
still equalize properly if this occurs.
16
FREEZE
Digital Input. Freezes equalizer in its current EQ state.
0: Continuous Update
1: Freeze EQ in current state.
For stand-alone operations, connect FREEZE to the LOCKED pin to enter the recommended Lock Until Reset mode.
Tie this pin low if unused.
SERIAL INTERFACE
18
SEN
Digital Input. Serial Interface Enable. This pin should be tied to ground when not in use.
19
SCK
Digital Input. Serial Interface Clock Signal. This pin should be tied to ground when not in use.
20
SD
Digital I/O. Serial Interface Data Signal. This pin should be tied to ground when not in use.
POWER
2
FN6739 Rev.3.00
May 22, 2019
VDD1
+5V power supply for analog equalizer. Isolate from +5V source with a ferrite bead and bypass to ground with a 0.1µF
capacitor in parallel with a 4.7µF capacitor.
Page 3 of 29
ISL59601, ISL59602, ISL59603, ISL59604, ISL59605
Pin Descriptions (Continued)
PIN NUMBER
PIN NAME
DESCRIPTION
11
VDD2
+5V power supply for output amplifier. Bypass to ground with a 0.1µF capacitor.
15
VREF
Internally generated 2.5V reference. Bypass to ground with a low-ESR 0.47µF capacitor. Do not attach anything else
to this pin.
1, 4, 6, 14, 17
GND
Ground
PAD
Solder the exposed thermal PAD to ground for best thermal and electrical performance.
THERMAL PAD
EP
Ordering Information
PART NUMBER
(Notes 1, 2, 3)
PART
MARKING
MAX EQ
LENGTH
TEMP RANGE
(°C)
PACKAGE
(RoHS Compliant)
PKG.
DWG. #
ISL59601IRZ
596 01IRZ
1000 feet
-40 to +85
20 Ld QFN (4x4mm)
L20.4x4C
ISL59601IRZ-T7
596 01IRZ
1000 feet
-40 to +85
20 Ld QFN (4x4mm)
L20.4x4C
ISL59601IRZ-T7A
596 01IRZ
1000 feet
-40 to +85
20 Ld QFN (4x4mm)
L20.4x4C
ISL59602IRZ
596 02IRZ
2000 feet
-40 to +85
20 Ld QFN (4x4mm)
L20.4x4C
ISL59602IRZ-T7
596 02IRZ
2000 feet
-40 to +85
20 Ld QFN (4x4mm)
L20.4x4C
ISL59602IRZ-T7A
596 02IRZ
2000 feet
-40 to +85
20 Ld QFN (4x4mm)
L20.4x4C
ISL59603IRZ
596 03IRZ
3000 feet
-40 to +85
20 Ld QFN (4x4mm)
L20.4x4C
ISL59603IRZ-T7
596 03IRZ
3000 feet
-40 to +85
20 Ld QFN (4x4mm)
L20.4x4C
ISL59603IRZ-T7A
596 03IRZ
3000 feet
-40 to +85
20 Ld QFN (4x4mm)
L20.4x4C
ISL59604IRZ
596 04IRZ
4000 feet
-40 to +85
20 Ld QFN (4x4mm)
L20.4x4C
ISL59605IRZ
596 05IRZ
5300 feet
-40 to +85
20 Ld QFN (4x4mm)
L20.4x4C
ISL59605IRZ-T7
596 05IRZ
5300 feet
-40 to +85
20 Ld QFN (4x4mm)
L20.4x4C
ISL59605IRZ-T7A
596 05IRZ
5300 feet
-40 to +85
20 Ld QFN (4x4mm)
L20.4x4C
ISL59605-SPI-EVALZ
Evaluation board with serial interface
NOTES:
1. Please refer to TB347 for details on reel specifications.
2. These Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte tin plate
plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Pb-free products are
MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.
3. For Moisture Sensitivity Level (MSL), please see device information page for ISL59601, ISL59602, ISL59603, ISL59604, ISL59605. For more
information on MSL please see techbrief TB363.
FN6739 Rev.3.00
May 22, 2019
Page 4 of 29
ISL59601, ISL59602, ISL59603, ISL59604, ISL59605
Table of Contents
Absolute Maximum Ratings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Thermal Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Serial Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Serial Timing Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Typical Performance Over 1000 Feet of Cat 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Typical Performance Over 2000 Feet of Cat 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Typical Performance Over 3000 Feet of Cat 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Typical Performance Over 4000 Feet of Cat 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Typical Performance Over 5200 Feet of Cat 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Typical Performance Over 1000 Feet of Copper-Core RG-59. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Typical Performance Over 2000 Feet of Copper-Core RG-59. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Typical Performance Over 3000 Feet of Copper-Core RG-59. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Typical Performance Over 4000 Feet of Copper-Core RG-59. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Typical Performance Over 5000 Feet of Copper-Core RG-59. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Typical Performance Over 6000 Feet of Copper-Core RG-59. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
MegaQ™ Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Equalization for Various Cable Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Application Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Unshielded Twisted Pair (UTP) App Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Coax Input Circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Dual UTP/Coax Input Circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Input Multiplexing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Stand-Alone Operation and Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Lock Until RESET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Continuous Update. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Polarity Detection and Correction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
The COLOR Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Monochrome Video Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Security Cameras. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Additional Equalization Modes Available With the Serial Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Continuous Update. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Lock Until RESET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Lock Until Signal Loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Manual Length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Serial Interface Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Write Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Read Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Register Listing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Bypassing and Layout Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
General PowerPAD Design Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Products . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Package Outline Drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
FN6739 Rev.3.00
May 22, 2019
Page 5 of 29
ISL59601, ISL59602, ISL59603, ISL59604, ISL59605
Absolute Maximum Ratings
Thermal Information
(TA = +25°C)
Supply Voltage between VDD and GND . . . . . . . . . . . . . . . . . . . . . . . . 5.75V
Maximum Continuous Output Current . . . . . . . . . . . . . . . . . . . . . . . . . 50mA
Maximum Voltage on any Pin . . . . . . . . . . . . . . . . GND - 0.3V to VDD + 0.3V
ESD Rating
Human Body Model (tested per JESD22-A114) . . . . . . . . . . . . . . 8,000V
Machine Model (Tested per JESD22-A115). . . . . . . . . . . . . . . . . . . . 600V
CDM Model (Tested per JESD22-C101) . . . . . . . . . . . . . . . . . . . . . 2,000V
Latch Up (Tested per JESD78; Class II, Level A). . . . . . . . . . . . . . . . . . . . . . . . . 100mA
Thermal Resistance (Typical)
JA (°C/W) JC (°C/W)
20 Ld QFN Package (Notes 4, 5) . . . . . . . .
40
3.7
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C
Ambient Operating Temperature . . . . . . . . . . . . . . . . . . . . . -40°C to +85°C
Die Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+150°C
Pb-Free Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . see TB493
CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product
reliability and result in failures not covered by warranty.
NOTES:
4. JA is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See Tech
Brief TB379.
5. For JC, the “case temp” location is the center of the exposed metal pad on the package underside.
Electrical Specifications
VDD = VDD1 = VDD2 = +5V, source video amplitude before any cable loss = 1VP-P, cable type = Cat 5,
cable length = 0 feet, RL = 150 (75 series + 75 load to ground), TA = +25°C, exposed die plate = 0V, unless otherwise specified.
Max cable length = 1000 feet for ISL59601, 2000 feet for ISL59602, 3000 feet for ISL59603, 4000 feet for ISL59604, and 5300 feet for
ISL59605.
PARAMETER
DESCRIPTION
CONDITIONS
MIN
(Note 6)
TYP
MAX
(Note 6)
UNIT
4.5
5.0
5.5
V
SUPPLY
VDD
VDD Operating Range
IS1
VDD1 Supply Current
40
60
mA
IS2
VDD2 Supply Current
30
45
mA
PSRRDC
Power Supply Rejection Ratio
60
dB
AC PERFORMANCE
BW
-3dB Bandwidth
Full power
5
MHz
DG
Differential Gain
Cable length = max,
20IRE Sub Carrier on 100% ramp
1
%
DP
Differential Phase
Cable length = max,
20IRE Sub Carrier on 100% ramp
1
°
Output Blanking/Backporch Level
Measured at VIDEO OUT pin
DC PERFORMANCE
VBL
0.82
0.95
1.05
V
INPUT CHARACTERISTICS
VINDIFF_MIN
Minimum Correctable Peak-to-Peak
Signal Swing
Measured at the source-end of
cable, before cable losses
0.7
VP-P
VINDIFF_MAX
Maximum Correctable Peak-to-Peak
Signal Swing
Measured at the source-end of
cable, before cable losses
1.4
VP-P
VCM-MIN
Min Common Mode Input Voltage
1
V
VCM-MAX
Max Common Mode Input Voltage
SNR
Signal-to-Noise Ratio,
NTC-7 weighted filter
FN6739 Rev.3.00
May 22, 2019
4
V
EQ = 0 feet
-67
dB rms
EQ = 1,000 feet
-67
dB rms
EQ = 2,000 feet
-65
dB rms
EQ = 3,000 feet
-64
dB rms
EQ = 4,000 feet
-61
dB rms
EQ = 5,300 feet
-54
dB rms
Page 6 of 29
ISL59601, ISL59602, ISL59603, ISL59604, ISL59605
Electrical Specifications
VDD = VDD1 = VDD2 = +5V, source video amplitude before any cable loss = 1VP-P, cable type = Cat 5,
cable length = 0 feet, RL = 150 (75 series + 75 load to ground), TA = +25°C, exposed die plate = 0V, unless otherwise specified.
Max cable length = 1000 feet for ISL59601, 2000 feet for ISL59602, 3000 feet for ISL59603, 4000 feet for ISL59604, and 5300 feet for
ISL59605. (Continued)
PARAMETER
DESCRIPTION
CMRR
Common-mode Rejection Ratio at
fIN = 100kHz
CONDITIONS
MIN
(Note 6)
MAX
(Note 6)
UNIT
0 feet cable
-50
dB
2,500 feet cable
-35
dB
25
µA
±0.5
dB
Input Clamp Current
IClamp
TYP
OUTPUT CHARACTERISTICS
AGC-ACC
AGC Accuracy
Accuracy of sync tip amplitude
relative to 600mV
IOUT
Output Drive Current
40
mA
tEN-EQ
Enable-to-Equalization On Time
500
ns
tDIS-EQ
Disable-to-Equalization Off Time
500
ns
LOGIC CONTROL PINS
VIH
Logic High Level
VIL
Logic Low Level
ILOGIC
Logic Input Current
2.0
V
0.8
V
EQ_DISABLE, FREEZE, SD, SCK,
SEN
±10
µA
INVERT, COLOR
±500
µA
Serial Timing
PARAMETER
DESCRIPTION
CONDITIONS
MIN
(Note 6)
TYP
MAX
(Note 6)
UNIT
tCS
Serial Enable Deselect Time
10
ns
tLEAD
Lead Time
10
ns
tSU
SD, SCK Setup Time
10
ns
tH
SD, SEN, SCK Hold Time
10
ns
tWH
SCK High Time
100
ns
tWL
SCK Low Time
100
ns
tRI
SD, SEN, SCK Rise Time
10
ns
tFI
SD, SEN, SCK Fall Time
10
ns
tLAG
Lag Time
10
ns
tV
SCK Rising Edge to SD Data Valid
fSCK
SCK Frequency
Read Operation
10
ns
5
MHz
NOTE:
6. Compliance to datasheet limits is assured by one or more methods: production test, characterization and/or design.
FN6739 Rev.3.00
May 22, 2019
Page 7 of 29
ISL59601, ISL59602, ISL59603, ISL59604, ISL59605
Serial Timing Diagram
t CS
SEN
t LEAD
SCK
SD
1
t SU
1
tH
f SCK
t WH
2
3
4
A6
A5
A4
5
tWL
A3
tRI
6
7
A2
A1
8
tV
9
10
D7
A0
11
D6
t LAG
t FI
12
D5
13
D4
14
D3
15
D2
16
D1
D0
READ OPERATION
t
SEN
t LEAD
SCK
SD
1
t SU
0
tH
fSCK
t WH
2
3
4
A6
A5
A4
5
t WL
A3
tRI
6
7
8
9
A2
A1
A0
D7
10
D6
11
D5
t LAG
t FI
12
D4
13
D3
CS
14
D2
15
D1
16
D0
WRITE OPERATION
A6:A0 = REGISTER ADDRESS, D7:D0 = DATA TO BE READ/WRITTEN
FN6739 Rev.3.00
May 22, 2019
Page 8 of 29
ISL59601, ISL59602, ISL59603, ISL59604, ISL59605
Typical Performance Over 1000 Feet of Cat 5
FIGURE 1. TEST PATTERN IMAGE AFTER 1000 FEET OF
UNCOMPENSATED CAT 5
200mV/DIV
200mV/DIV
10µs/DIV
FIGURE 3. MULTIBURST WAVEFORM AFTER 1000 FEET OF
UNCOMPENSATED CAT 5
FN6739 Rev.3.00
May 22, 2019
FIGURE 2. TEST PATTERN IMAGE AFTER 1000 FEET OF CAT 5
WITH ISL59601 (OR BETTER)
10µs/DIV
FIGURE 4. MULTIBURST WAVEFORM AFTER 1000 FEET OF CAT 5
WITH ISL59601 (OR BETTER)
Page 9 of 29
ISL59601, ISL59602, ISL59603, ISL59604, ISL59605
Typical Performance Over 2000 Feet of Cat 5
FIGURE 5. TEST PATTERN IMAGE AFTER 2000 FEET OF
UNCOMPENSATED CAT 5
200mV/DIV
200mV/DIV
10µs/DIV
FIGURE 7. MULTIBURST WAVEFORM AFTER 2000 FEET OF
UNCOMPENSATED CAT 5
FN6739 Rev.3.00
May 22, 2019
FIGURE 6. TEST PATTERN IMAGE AFTER 2000 FEET OF CAT 5
WITH ISL59602 (OR BETTER)
10µs/DIV
FIGURE 8. MULTIBURST WAVEFORM AFTER 2000 FEET OF CAT 5
WITH ISL59602 (OR BETTER)
Page 10 of 29
ISL59601, ISL59602, ISL59603, ISL59604, ISL59605
Typical Performance Over 3000 Feet of Cat 5
FIGURE 9. TEST PATTERN IMAGE AFTER 3000 FEET OF
UNCOMPENSATED CAT 5
200mV/DIV
200mV/DIV
10µs/DIV
FIGURE 11. MULTIBURST WAVEFORM AFTER 3000 FEET OF
UNCOMPENSATED CAT 5
FN6739 Rev.3.00
May 22, 2019
FIGURE 10. TEST PATTERN IMAGE AFTER 3000 FEET OF CAT 5
WITH ISL59603 (OR BETTER)
10µs/DIV
FIGURE 12. MULTIBURST WAVEFORM AFTER 3000 FEET OF CAT 5
WITH ISL59603 (OR BETTER)
Page 11 of 29
ISL59601, ISL59602, ISL59603, ISL59604, ISL59605
Typical Performance Over 4000 Feet of Cat 5
FIGURE 13. TEST PATTERN IMAGE AFTER 4000 FEET OF
UNCOMPENSATED CAT 5
200mV/DIV
200mV/DIV
10µs/DIV
FIGURE 15. MULTIBURST WAVEFORM AFTER 4000 FEET OF
UNCOMPENSATED CAT 5
FN6739 Rev.3.00
May 22, 2019
FIGURE 14. TEST PATTERN IMAGE AFTER 4000 FEET OF CAT 5
WITH ISL59604 (OR BETTER)
10µs/DIV
FIGURE 16. MULTIBURST WAVEFORM AFTER 4000 FEET OF CAT 5
WITH ISL59604 (OR BETTER)
Page 12 of 29
ISL59601, ISL59602, ISL59603, ISL59604, ISL59605
Typical Performance Over 5200 Feet of Cat 5
FIGURE 17. TEST PATTERN IMAGE AFTER 5200 FEET OF
UNCOMPENSATED CAT 5
200mV/DIV
200mV/DIV
10µs/DIV
FIGURE 19. MULTIBURST WAVEFORM AFTER 5200 FEET OF
UNCOMPENSATED CAT 5
FN6739 Rev.3.00
May 22, 2019
FIGURE 18. TEST PATTERN IMAGE AFTER 5200 FEET OF CAT 5
WITH ISL59605
10µs/DIV
FIGURE 20. MULTIBURST WAVEFORM AFTER 5200 FEET OF CAT 5
WITH ISL59605
Page 13 of 29
ISL59601, ISL59602, ISL59603, ISL59604, ISL59605
Typical Performance Over 1000 Feet of Copper-Core RG-59
FIGURE 21. TEST PATTERN IMAGE AFTER 1000 FEET OF
UNCOMPENSATED RG-59 COAX
200mV/DIV
200mV/DIV
10µs/DIV
FIGURE 23. MULTIBURST WAVEFORM AFTER 1000 FEET OF
UNCOMPENSATED RG-59 COAX
FN6739 Rev.3.00
May 22, 2019
FIGURE 22. TEST PATTERN IMAGE AFTER 1000 FEET OF RG-59
COAX WITH ISL59601 (OR BETTER)
10µs/DIV
FIGURE 24. MULTIBURST WAVEFORM AFTER 1000 FEET OF RG-59
COAX WITH ISL59601 (OR BETTER)
Page 14 of 29
ISL59601, ISL59602, ISL59603, ISL59604, ISL59605
Typical Performance Over 2000 Feet of Copper-Core RG-59
FIGURE 25. TEST PATTERN IMAGE AFTER 2000 FEET OF
UNCOMPENSATED RG-59 COAX
200mV/DIV
200mV/DIV
10µs/DIV
FIGURE 27. MULTIBURST WAVEFORM AFTER 2000 FEET OF
UNCOMPENSATED RG-59 COAX
FN6739 Rev.3.00
May 22, 2019
FIGURE 26. TEST PATTERN IMAGE AFTER 2000 FEET OF RG-59
COAX WITH ISL59602 (OR BETTER)
10µs/DIV
FIGURE 28. MULTIBURST WAVEFORM AFTER 2000 FEET OF RG-59
COAX WITH ISL59602 (OR BETTER)
Page 15 of 29
ISL59601, ISL59602, ISL59603, ISL59604, ISL59605
Typical Performance Over 3000 Feet of Copper-Core RG-59
FIGURE 29. TEST PATTERN IMAGE AFTER 3000 FEET OF
UNCOMPENSATED RG-59 COAX
200mV/DIV
200mV/DIV
10µs/DIV
FIGURE 31. MULTIBURST WAVEFORM AFTER 3000 FEET OF
UNCOMPENSATED RG-59 COAX
FN6739 Rev.3.00
May 22, 2019
FIGURE 30. TEST PATTERN IMAGE AFTER 3000 FEET OF RG-59
COAX WITH ISL59602 (OR BETTER)
10µs/DIV
FIGURE 32. MULTIBURST WAVEFORM AFTER 3000 FEET OF RG-59
COAX WITH ISL59602 (OR BETTER)
Page 16 of 29
ISL59601, ISL59602, ISL59603, ISL59604, ISL59605
Typical Performance Over 4000 Feet of Copper-Core RG-59
FIGURE 33. TEST PATTERN IMAGE AFTER 4000 FEET OF
UNCOMPENSATED RG-59 COAX
200mV/DIV
200mV/DIV
10µs/DIV
FIGURE 35. MULTIBURST WAVEFORM AFTER 4000 FEET OF
UNCOMPENSATED RG-59 COAX
FN6739 Rev.3.00
May 22, 2019
FIGURE 34. TEST PATTERN IMAGE AFTER 4000 FEET OF RG-59
COAX WITH ISL59602 (OR BETTER)
10µs/DIV
FIGURE 36. MULTIBURST WAVEFORM AFTER 4000 FEET OF RG-59
COAX WITH ISL59602 (OR BETTER)
Page 17 of 29
ISL59601, ISL59602, ISL59603, ISL59604, ISL59605
Typical Performance Over 5000 Feet of Copper-Core RG-59
FIGURE 37. TEST PATTERN IMAGE AFTER 5000 FEET OF
UNCOMPENSATED RG-59 COAX
200mV/DIV
200mV/DIV
10µs/DIV
FIGURE 39. MULTIBURST WAVEFORM AFTER 5000 FEET OF
UNCOMPENSATED RG-59 COAX
FN6739 Rev.3.00
May 22, 2019
FIGURE 38. TEST PATTERN IMAGE AFTER 5000 FEET OF RG-59
COAX WITH ISL59603 (OR BETTER)
10µs/DIV
FIGURE 40. MULTIBURST WAVEFORM AFTER 5000 FEET OF RG-59
COAX WITH ISL59603 (OR BETTER)
Page 18 of 29
ISL59601, ISL59602, ISL59603, ISL59604, ISL59605
Typical Performance Over 6000 Feet of Copper-Core RG-59
FIGURE 41. TEST PATTERN IMAGE AFTER 6000 FEET OF
UNCOMPENSATED RG-59 COAX
200mV/DIV
200mV/DIV
10µs/DIV
FIGURE 43. MULTIBURST WAVEFORM AFTER 6000 FEET OF
UNCOMPENSATED RG-59 COAX
FN6739 Rev.3.00
May 22, 2019
FIGURE 42. TEST PATTERN IMAGE AFTER 6000 FEET OF RG-59
COAX WITH ISL59603 (OR BETTER)
10µs/DIV
FIGURE 44. MULTIBURST WAVEFORM AFTER 6000 FEET OF RG-59
COAX WITH ISL59603 (OR BETTER)
Page 19 of 29
ISL59601, ISL59602, ISL59603, ISL59604, ISL59605
Functional Description
Equalization for Various Cable Types
MegaQ™ Overview
TABLE 1. CABLE TYPES AND LENGTHS
MegaQ™ is a fully automated, stand-alone equalizer for
composite video transmitted over UTP (Unshielded Twisted Pair,
i.e. Cat 5, Cat 6, etc.) or coaxial (RG-59) cables.
Differential video signals sent over long distances of twisted pair
wire exhibit large high frequency attenuation, resulting in loss of
high frequency detail/blurring. The exact loss characteristic is a
complex function of wire gauge, length, composition, and
coupling to adjacent conductors.
The video signal can be restored by applying a filter with the
exact inverse transfer function to the far end signal. MegaQ™ is
designed to compensate for the losses due to long cables, and
incorporates the functionality and flexibility to match a wide
variety of cable types and loss characteristics.
While MegaQ™ was designed and optimized for stand-alone
operation, with no need for any external control of any kind, it has
an optional SPI serial interface with some additional features.
See “Additional Equalization Modes Available With the Serial
Interface” on page 22 for more information on the features and
operation of the serial interface.
Copper-Core
CAT5/CAT5e
5300 feet
CAT6
5600 feet
Coaxial - RG-59
6000 feet
CAT2/CAT3
(telephone wire)
3000 feet
Belden IMSA Spec 39-2 581718
(3-pair traffic light cable)
5300 feet
Non-Copper-Core*
CAT5/CAT5e CCA
(Copper-Coated Aluminum Core)
2000 feet
Coaxial - RG-59 CCS
(Copper-Coated Steel Core)
1500 feet
*Image quality will be significantly improved over unequalized cable, but
there will still be some image smearing due to the high resistance of the
core material.
Ferrite Bead –
DC resistance = 1,
600 at 100MHz,
100mA DC current rating
5V
TVS
Z1
1k
DIFFERENTIAL
VIDEO INPUT5V
TVS
R3
R1
49.9
R2
49.9
V DD1
VDD2
IN+
OUT
GND
1.0µF
C2
IN-
Z2
TVS = Transient Voltage Suppressor
a.k.a. Transorb
SERIAL
INTERFACE
(OPTIONAL)
C9
0.1µF 4.7µF
0.1µF
C1
1.0µF
+5V
C8
C7
DIFFERENTIAL
VIDEO INPUT+
MAXIMUM
LENGTH SUPPORTED
CABLE TYPE
SEN
SCK
SD
CFB
ISL59601
ISL59602
ISL59603
ISL59604
ISL59605
VREF
EQ_DISABLE
COLOR
INVERT
LOCKED
300
C4 R5
1500pF
R6 75.0 VIDEO
OUT
C5
0.047µF
Internally
Generated
C6
0.47µF
Freezes EQ once
lock is achieved.
Tie FREEZE low if
not used.
FREEZE
GND
FIGURE 45. APPLICATION CIRCUIT FOR UTP CABLE
FN6739 Rev.3.00
May 22, 2019
Page 20 of 29
ISL59601, ISL59602, ISL59603, ISL59604, ISL59605
Application Information
Unshielded Twisted Pair (UTP) App Circuit
Figure 45 shows the complete schematic for a MegaQ™
equalizer configured for unshielded twisted pair (UTP) cable. The
input signal is terminated into the network formed by R1, R2,
and R3. C1 and C2 AC-couple the signal into MegaQ™. To protect
the front-end circuitry, 5V transorbs (Z1 and Z2) should be used
instead of diodes because the signals on either differential input
may swing far enough below ground to turn on a diode and
distort the video.
On the output side, C5, R5, and C4 form a compensation
network, while R6 provides 75Ω source-termination for the video
output. MegaQ™ has an native gain of 6dB, so when VIDEO OUT
is terminated into 75Ω (the input to a DVR, TV, etc.), R6 and the
75Ω terminator form a 2:1 divider, producing standard video
amplitude across the 75Ω terminator.
Coax Input Circuit
VCC
C4
D1
0.1µF
10k
COAX
C1
37.5 R1
1k
37.5
R3
R2
C2
IN+
GND
MegaQTM
IN-
1.0µF
C3
0.1µF
TVS = Transient Voltage Suppressor
a.k.a. Transorb
FIGURE 46. APPLICATION CIRCUIT FOR COAX CABLE
Dual UTP/Coax Input Circuit
If desired, it is also possible to support both UTP and coax cables
with the same PCB layout using two SPST switches that are
closed when in coax mode (Figure 47). Since UTP requires a
100Ω termination network while coax requires 75Ω, a switch to
introduce a shunt 300Ω resistor when in coax mode will change
the termination from 100Ω to 75Ω. A second switch is required
to engage C3. The addition of the coax startup circuit (D1, R4,
C4) can unbalance the capacitance of the differential pair and
degrade the CMRR in UTP applications. This in turn could cause
excess noise at long lengths of UTP. In UTP applications, if the
output signal is too noisy at long distances, an optional capacitor
Cx may be used to balance the capacitance of the differential
FN6739 Rev.3.00
May 22, 2019
10k
UTP
IN+
COAX
5.6pF
Cx*
Z2
5V
TVS
*optional
R4
1.0µF
Z1
5V
TVS
UTP
IN-
D1
300
R5
49.9
SW1A
49.9
SW1B
C3
0.1µF
C1
R1
R3
R2
1k
C2
IN+
GND
MegaQTM
IN-
1.0µF
Close all switches for
Coax
TVS = Transient Voltage Suppressor
a.k.a. Transorb
Input Multiplexing
Placing a semiconductor multiplexer in front of this part may
increase high frequency attenuation and noise. However a
low-capacitance mechanical relay may be acceptable. Note that
changing from one channel to another in Lock Until Reset mode
will require a reset (INVERT toggle) to trigger equalization of the
new channel (see “Lock Until RESET” on page 21).
For best performance, do not multiplex the inputs to the
equalizer - this can further degrade the signal. Instead, multiplex
at the output after equalization has been performed.
Stand-Alone Operation and Configuration
R4
1.0µF
Z2
5V
TVS
VCC
C4
0.1µF
FIGURE 47. APPLICATION CIRCUIT FOR UTP/COAX CABLE
Figure 46 shows the input termination recommended for coaxial
cables. The differential termination resistance is now 75Ω to
match the characteristic impedance of the RG-59 coax cable. C3
bypasses high-frequency noise on the coax ground line to system
ground. This allows the coax ground to be independent of the
system at low frequencies (DC to 50/60Hz) to accommodate
differences in the ground potential of the remote video source(s).
The coax startup network (D1, R4, C4) prevents a rare start-up
condition that can occur when a high average-picture-level (e.g.
white screen) video signal is present on the inputs before the
power has been applied.
Z1
5V
TVS
inputs. The value of Cx should be determined by calculating how
much trace capacitance is added by the coax startup circuit. A
typical value for a good layout is ~5pF. Note that only coax or UTP
should be connected at any one time - this circuit does not
multiplex between them.
In its default stand-alone configuration, MegaQ™ features two
modes of automatic cable equalization: Lock Until Reset and
Continuous Update. Lock Until Reset is the recommended mode
for most applications.
LOCK UNTIL RESET
In the Lock Until Reset mode, once MegaQ™ finds the optimum
equalization and the LOCKED signal goes high, the equalization
is frozen and will not change until either the power is cycled or
the INVERT signal is toggled, which initiates a re-equalization of
the input signal. Re-equalization is usually only necessary during
device/system evaluation - in normal operation MegaQ™
powers-up, acquires and equalizes the signal, and continues to
equalize until/unless it is powered-down. If the signal is lost in
Lock Until Reset mode, the LOCKED pin will not go low
until/unless the device is reset by toggling the INVERT pin. A
reset should only be necessary if the length or type of cable was
changed without cycling power.
To enable the Lock Until Reset mode, tie the LOCKED output pin
to the FREEZE input pin as shown in Figure 45 on page 20.
To generate a reset (and trigger a re-equalization), toggle the
external INVERT pin to its opposite state for at least 1ms.
Depending on the initial state of INVERT, this would be a
high-low-high or low-high-low sequence.
Page 21 of 29
ISL59601, ISL59602, ISL59603, ISL59604, ISL59605
CONTINUOUS UPDATE
In the Continuous Update mode, MegaQ™ will continuously try to
find the optimum equalization solution. When the equalization
has settled for 100 sequential video lines with no changes, the
LOCKED pin will go high. However once lock is achieved, noise
and average-picture-level changes may cause the device to
unlock, causing some image perturbation while MegaQ™
re-equalizes.
The Continuous Update mode is enabled whenever the FREEZE
pin is set to a logic low (grounded).
Polarity Detection and Correction
MegaQ™ features polarity detection and correction,
automatically detecting incorrectly-wired input signals and
inverting the signal inside the IC as necessary. The detected
polarity is indicated by the state of the INVERT pin.
The INVERT pin has 2 modes of operation. It is typically used to
indicate whether or not the incoming signal is inverted (the “+”
signal on the “-” input and vice-versa). The state of the invert
signal is then used to tell the signal processing logic whether or
not to invert the signal in the signal path.
A logic high on INVERT indicates that the positive differential
input signal is on IN- (pin 5) and the negative differential input
signal is on IN+ (pin 3). A logic low indicates nominal polarity.
However the unique design of the INVERT I/O pin (Figure 48) also
allows MegaQ™’s internal inversion detector to be overdriven
externally, forcing MegaQ™ to invert or not invert the signal
regardless of the state of the inversion detection function. This is
not necessary in normal operation, but it may improve
performance in particularly noisy environments when the polarity
of the signal is guaranteed to be correct.
INVERT
PIN
INVERSION
DETECTION
LOGIC
COLOR
PIN
COLOR
DETECTION
LOGIC
13k
SIGNAL
PROCESSING
ISL5960x
FIGURE 49. COLOR PIN STRUCTURE
However the unique design of the COLOR I/O pin (Figure 49) also
allows MegaQ™’s internal color detector to be overdriven
externally. This is not necessary in normal operation, but it may
improve performance in particularly noisy environments when
the signal type is predetermined.
Monochrome Video Signals
MegaQ™ will equalize monochrome signals to the same distance
as color signals. However due to the high level of noise past
~4800 feet, the COLOR and LOCKED indicators may become
invalid for monochrome signals. The device will still equalize
properly if this occurs.
Security Cameras
MegaQ™ is ideal for security camera installations.
The automatic adaptive equalizer doesn't need any active silicon
on the transmit side of the cable, enabling upgrading of older
installations without having to touch the installed camera base,
including older monochrome cameras.
MegaQ™ automatically adjusts for wiring polarity errors as well
as adjusts for optimum image quality. These features eliminates
the need for the installer to make any adjustments.
With an extended equalization range of 5300ft, the ISL59605
enables cameras to be placed in even more remote locations,
enabling coverage of up to three square miles from a single
monitoring station.
13k
SIGNAL
PROCESSING
ISL5960x
FIGURE 48. INVERT PIN STRUCTURE
The COLOR Pin
The color pin has 2 modes of operation. It is typically used to
indicate whether or not the incoming signal has a colorburst or
not. The state of the color signal is then used to tell the signal
processing logic whether or not it can rely on the presence of a
colorburst signal. A logic high indicates a color signal; a logic low
indicates monochrome.
Additional Equalization Modes Available
With the Serial Interface
In addition to the Lock Until Reset and Continuous Update
modes, software control of MegaQ™ through the SPI interface
adds a Lock Until Signal Loss mode and a Manual Equalization
mode.
Note: When controlling MegaQ™ through the SPI interface, the
external FREEZE pin must be tied to ground (logic low). Failure to
keep FREEZE at a logic low will prevent the software controls
from working properly.
All of the equalization modes are selected via the two “Locking
Mode/Manual Length Enable” register bits, 0x05[1:0].
CONTINUOUS UPDATE
Continuous Update mode is entered by setting address
0x05[1:0] = 00b. Continuous Update behavior is the same as
described in the stand-alone mode.
FN6739 Rev.3.00
May 22, 2019
Page 22 of 29
ISL59601, ISL59602, ISL59603, ISL59604, ISL59605
LOCK UNTIL RESET
Lock Until Reset mode is entered by setting address
0x05[1:0] = 10b. Lock Until Reset behavior is the same as
described in the stand-alone mode, with the exception of how to
generate a reset.
To generate a reset via software, select Continuous Update mode
and then return to Lock Until Reset mode (register 0x05[1:0] =
00b then 10b). Toggling INVERT (either the hardware pin or the
software bit) will not cause a reset/re-equalization event.
LOCK UNTIL SIGNAL LOSS
Lock Until Signal Loss mode is entered by setting address
0x05[1:0] = 01b. Lock Until Signal Loss can only be enabled via
the SPI interface.
In the Lock Until Signal Loss mode, MegaQ™ will freeze the
equalization once the LOCKED pin goes high (in the same way as
Lock Until Reset). Unlike the “Settled” state in the Continuous
Update mode, only a signal loss lasting more than 1ms (typical) will
cause MegaQ™ to re-equalize the signal when it returns. In this
sense, the Lock Until Signal Loss mode can be considered as
halfway between the Continuous Update mode and the Lock Until
Reset mode. The Lock Until Signal Loss mode is useful, for example,
when testing or demonstrating a system by plugging in multiple
different length cables - it eliminates the need to also generate a
reset. To prevent potentially undesired re-equalization, signal losses
lasting less than 1ms (typical) do not trigger a re-equalization.
address byte followed by 8 bits of data. See the “Serial Timing
Diagram” on page 8 for more details on using the SPI interface.
TABLE 2. ADDRESS BYTE FORMAT
0 = Write
1 = Read
A6
A5
A4
A3
A2
A1
(MSB)
A0
(LSB)
WRITE OPERATION
After the address byte is clocked in, the next 8 bits should
contain the data to be sent to the register identified in the
address byte.
READ OPERATION
After the rising edge of the 8th clock after the address byte is clocked in,
the microcontroller should tristate the SD line so MegaQ™ can begin to
output data on the SD pin (from the register identified in the address
byte), beginning on the 9th rising edge of SCK. The data should be
latched on the falling edge of SCK to allow enough time for the data to
settle. See ““Serial Timing Diagram” on page 8 for more details on how
to read from the registers.
MANUAL LENGTH
Manual Length mode is entered by setting address
0x05[1:0] = 11b. Manual Length mode allows the forcing of
specific cable lengths, cable type, DC gains, etc. (see the Register
Listing on the next page). The “Cable Type” bit (0x05 [4]) allows
selection between the two most common cable types for security
video: Cat 5/6 or steel core RG-59 coaxial. However since many
of MegaQ™’s automatic functions and adjustments are disabled
in Manual Length mode, performance is almost always worse
than what is achieved in any of the automatic modes. For
example, automatic polarity correction is disabled so the polarity
must be manually set using the INVERT bit. There is no practical
reason to ever use Manual Length mode in normal operation.
Serial Interface Protocol
While MegaQ™ is designed to work as a stand-alone equalizer, it
does have a serial interface that can be used to control it and
monitor its state.
The serial interface is used to read and write the configuration
registers. It uses three signals (SCK, SD, and SEN) for
programming. The serial clock can operate up to 5MHz
(5Mbits/s). The “Serial Timing Diagram” on page 8 shows the
timing of serial I/O.
A transaction begins when the host microcontroller takes SEN
(serial enable) high. The first 8 bits on the SD (serial data) pin are
latched by MegaQ™ on the rising edge of SCK (serial clock) to
form the address byte. The MSB of the address byte indicates
whether the operation is a read (1) or a write (0), and the next
seven bits indicate which register is to be read from or written to.
Each read and write operation consists of 16 bits: 8 bits for an
FN6739 Rev.3.00
May 22, 2019
Page 23 of 29
ISL59601, ISL59602, ISL59603, ISL59604, ISL59605
Register Listing
ADDRESS
REGISTER
(DEFAULT VALUE)
0x00
Device ID (0x31)
0x01
Signal Status (N/A)
BIT(S)
3:0
7:4
0x02
Manual Length(0x00)
FN6739 Rev.3.00
May 22, 2019
FUNCTION NAME
DESCRIPTION
Device Revision
0 = initial silicon, 1 = first revision, etc.
Device ID
0x3
0
Signal Present
0: A signal is not present at the input
1: A signal is present at the input
1
DLL Locked
0: DLL is not locked
1: DLL is locked
2
Signal Polarity
0: Inverted Polarity
1: Nominal Polarity
This bit is only valid if the INVERT pin is connected as an
output. If INVERT is overdriven, this value may not reflect the
polarity of the input signal.
3
Color Detected
0: Signal is monochrome
1: Signal has a colorburst
4
Signal Overloaded
0: Signal (if present) is within normal range
1: Signal appears to be overloaded
5
Settled
0: EQ is not settled, though DLL may be locked.
1: EQ has stabilized and equalization achieved.
Manual Length
Manual Length Control; 0x0 through 0x3F,
84 feet per bit.
0x0: 0 feet.
0x3F: 5300 feet (Cat 5 mode)
This register sets the EQ setting when MegaQ™ is in manual
length mode (reg 0x05[1:0] = 11).
Note that the length in this register is for Cat 5 cable when
“Cable Type” (reg 0x05[4]) equals 0. When “Cable Type” is set
to 1 (coax mode), then the length is for steel core coax. In coax
mode, the maximum length is 0x14 (~1200 feet) and setting
the register higher than this value does not provide any
increase in equalization.
5:0
Page 24 of 29
ISL59601, ISL59602, ISL59603, ISL59604, ISL59605
Register Listing (Continued)
ADDRESS
REGISTER
(DEFAULT VALUE)
0x03
Manual DC Gain (0x20)
0x04
Pin Overrides (0x00)
0x05
Equalization Control (0x00)
FN6739 Rev.3.00
May 22, 2019
BIT(S)
5:0
FUNCTION NAME
DESCRIPTION
Manual DC Gain
0x00: Maximum DC Gain (+3dB)
0x20: Mid-Scale 0dB
0x3F: Minimum DC Gain (-3dB)
This register sets the DC Gain when the device is in manual
length mode (reg 0x05[1:0] = 11).
0
Freeze Select
0: Use value of FREEZE pin.
1: Use value in “Freeze Value” bit
1
Freeze Value
If Freeze Select = 1, then:
0: Equalization is not frozen
1: Equalization is frozen at current setting.
If Freeze Select = 0, then this bit is ignored.
2
Eq-Disable Select
0: Use value of EQ_DISABLE pin.
1: Use value in “Eq-Disable Value” bit
3
Eq-Disable Value
If Eq-Disable Select = 1, then:
0: Equalizer is enabled
1: Equalizer is disabled (allows data to be sent upstream over
cable pair connected to inputs)
If Eq-Disable Select = 0, then this bit is ignored.
4
Color Select
0: Use value of COLOR pin
1: Use value in “Color Value” bit
5
Color Value
If Color Select = 1, then
0: Monochrome Mode
1: Color Mode
If Color Select = 0, then this bit is ignored.
6
Invert Select
0: Use value of INVERT pin.
1: Use value in “Invert Value” bit
7
Invert Value
If Invert Select = 1, then
0: Incoming signal is not inverted
1: Incoming signal is inverted
If Invert Select = 0, then this bit is ignored.
1:0
Locking Mode/Manual
Length Enable
00 = Continuous Monitoring
01 = Lock Until Signal Loss*
10 = Lock Until Reset
11 = Manual Length**
*Signal must be missing for at least 1ms in order to trigger a
re-equalization.
** In Manual Length mode the polarity corrector is disabled
and the polarity must be set using the INVERT bit or pin.
Note: The FREEZE pin must be tied to ground/a logic low for
this function to work correctly.
3:2
Noise Filter
00: No Noise Filtering
01: Min Noise Filtering
10 or 11: Max Noise Filtering
Note: Noise Filtering is only available on the ISL59605
4
Cable Type
0: CAT5/6 Mode
1: Steel Core Coax Mode
This bit is ignored in all modes except Manual Length (reg
0x05[1:0] = 11).
Set to 1 if using copper-coated steel-core coaxial cable and
you are in Manual Length.
Page 25 of 29
ISL59601, ISL59602, ISL59603, ISL59604, ISL59605
Bypassing and Layout
Considerations
MegaQ™ requires a dedicated ground plane in order to function
properly. For 2-layer boards, pour a quarter-inch ground plane
extending around the device on both the top and bottom layers.
Ensure that the ground plane on the bottom layer is a solid plane
with no traces cutting through it. Bypass capacitors must be
placed as close as possible to the device in order to ensure good
performance at longer lengths of equalization. Ensure that the
ground connections for the bypass capacitors connect directly to
the same uniform ground plane described previously.
General PowerPAD Design Considerations
The thermal pad must be connected to the ground plane for heat
dissipation. Figure 50 is an example of how to use vias to remove
heat from the IC.
Power Dissipation
The maximum power dissipation allowed in a package is
determined according to Equation 1:
T JMAX – T AMAX
PD MAX = --------------------------------------- JA
(EQ. 1)
Where:
TJMAX = Maximum junction temperature
TAMAX = Maximum ambient temperature
JA = Thermal resistance of the package
The maximum power dissipation actually produced by an IC is
the total quiescent supply current times the total power supply
voltage, plus the power in the IC due to the load, or:
for sourcing use Equation 2:
V OUT
PD MAX = V S I SMAX + V S – V OUT ------------R
(EQ. 2)
L
for sinking use Equation 3:
(EQ. 3)
PD MAX = V S I SMAX + V OUT – V S I LOAD
FIGURE 50. PCB VIA PATTERN
The thermal pad is electrically connected to GND through the
high resistance IC substrate. We recommend you fill the thermal
pad area with vias. The via array should be centered in the
thermal pad and placed such that the center on center spacing is
3x the via radius. Vias should be small, but large enough to allow
solder wicking during reflow. Connect all vias to ground. It is
important the vias have a low thermal resistance for efficient
heat transfer. Do not use “thermal relief” patterns. It is important
to have a solid connection of the plated-through hole to each
plane.
FN6739 Rev.3.00
May 22, 2019
Where:
VS = Supply voltage
ISMAX = Maximum quiescent supply current
VOUT = Maximum output voltage of the application
RLOAD = Load resistance tied to ground
ILOAD = Load current
Page 26 of 29
ISL59601, ISL59602, ISL59603, ISL59604, ISL59605
Revision History
The revision history provided is for informational purposes only and is believed to be accurate, but not warranted. Please go to web to make
sure you have the latest Rev.
DATE
May 22, 2019
REVISION
CHANGE
FN6739.3 Updated Ordering information table by removing EOL products.
Removed Products section.
Updated disclaimer.
Aug 6, 2012
FN6739.2 Typical applications circuit diagrams and corresponding text updated to reflect more optimal setup for the device.
Converted to Updated Intersil Template
page 1 - Updated Related Literature by changing titles to match released application notes
Added standard Reference to MIN and MAX columns and Note to Electrical Specifications and Serial Timing Spec
Tables: "Compliance to datasheet limits is assured by one or more methods: production test, characterization and/or
design."
page 4 - Updated ordering information by naming Evaluation boards to match Intrepid.
CHANGED I2C to SPI as follows:
page 22 first paragraph and 2nd Note paragraph under "Additional Equalization Modes Available with the Serial
Interface" section from "…MegaQ through the I2C interface…" to "…MegaQ through the SPI interface…"
page 23 "Under Lock Until Signal Loss" section 1st paragraph last sentence "…via the I2C interface."
To: "…via the SPI interface."
Nov 19, 2010
FN6739.1 Modified both "Typical Application" drawings on page 1 to reflect recommended new termination network.
Modified Figures 45, 46, and 47 to reflect recommended new termination network.
Modified text in "UTP Application Circuit" and "Coax Input Circuit" sections to mention changes to termination
network.
Added "Dual UTP/Coax Input Circuit" heading
Added superscript TM to all MegaQ and trademark statement, pg 1.
Added ±8kV ESD protection to the Features list
Pg24, Register 0x04 of the Register Listing: Fixed Select and Value locations (were swapped for each pin).
Last two rows should say "Invert", not "INVERT", EXCEPT for "Use the value of INVERT pin
Pg25, address 0x05 of Register listing, 3:2 Noise filter row, change from:
00: No Noise Filtering
01: Min Noise Filtering
1X: Max Noise Filtering
to:
00: No Noise Filtering
01: Min Noise Filtering
10 or 11: Max Noise Filtering
Note: Noise Filtering is only available on the ISL59605
Oct 8, 2010
FN6739.0 Initial Release.
FN6739 Rev.3.00
May 22, 2019
Page 27 of 29
ISL59601, ISL59602, ISL59603, ISL59604, ISL59605
Package Outline Drawing
For the most recent package outline drawing, see L20.4x4C.
L20.4x4C
20 LEAD QUAD FLAT NO-LEAD PLASTIC PACKAGE
Rev 0, 11/06
4X
4.00
2.0
16X 0.50
A
B
16
6
PIN #1 INDEX AREA
20
6
PIN 1
INDEX AREA
1
4.00
15
2 .70 ± 0 . 15
11
(4X)
5
0.15
6
10
0.10 M C A B
4 20X 0.25 +0.05 / -0.07
20X 0.4 ± 0.10
TOP VIEW
BOTTOM VIEW
SEE DETAIL “X”
0.10 C
0 . 90 ± 0 . 1
C
BASE PLANE
( 3. 8 TYP )
(
2. 70 )
SEATING PLANE
0.08 C
( 20X 0 . 5 )
SIDE VIEW
( 20X 0 . 25 )
C
0 . 2 REF
5
( 20X 0 . 6)
0 . 00 MIN.
0 . 05 MAX.
DETAIL “X”
TYPICAL RECOMMENDED LAND PATTERN
NOTES:
1. Dimensions are in millimeters.
Dimensions in ( ) for Reference Only.
2. Dimensioning and tolerancing conform to AMSE Y14.5m-1994.
3. Unless otherwise specified, tolerance: Decimal ±0.05
4. Dimension b applies to the metallized terminal and is measured
between 0.15mm and 0.30mm from the terminal tip.
5. Tiebar shown (if present) is a non-functional feature.
6. The configuration of the pin #1 identifier is optional, but must be
located within the zone indicated. The pin #1 identifier may be
either a mold or mark feature.
FN6739 Rev.3.00
May 22, 2019
Page 28 of 29
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