Datasheet
ISL1571
Power Line Communication (PLC)
The ISL1571 is a dual operational amplifier designed
for PLC line driving in Orthogonal Frequency-Division
Multiplexing (OFDM) and Spread Spectrum
Communication (SSC) based solutions. This device
features a high drive capability of 750mA while
consuming only 6mA of supply current per amplifier
and operating from a single 4.5V to 12V supply. The
driver achieves a typical distortion of -80dBc, at
150kHz into a 25Ω load.
The ISL1571 is available in the thermally-enhanced
16 Ld QFN or 10 Ld HMSOP package and is specified
for operation across the full -40°C to +85°C
temperature range. The ISL1571 has control pins
BIAS0 and BIAS1 for controlling the bias and
enable/disable of the outputs. These controls allow for
lowering the power to fit the performance/power ratio
for the application.
Features
• 21dBm output power capability
• Drives up to 750mA from a +12V supply
• 20VP-P differential output drive into 21Ω
• Very low noise floor
• -75dBc typical driver output distortion at 4MHz
• -80dBc typical driver output distortion at 10MHz
• -79dBc typical driver output distortion at 17MHz
• Low quiescent current of 6mA per amplifier
• Supply range
○ ISL1571IUEZ: 4.5V to 12V
○ ISL1571IRZ ±2.25V to ±6V: 4.5V to 12V
• 250MHz bandwidth
The ISL1571 is ideal for line driving applications
following the Homeplug 1.0, Homeplug AV and UPA
standard based PLC.
• Thermal shutdown
Applications
Related Literature
• Homeplug 1.0
• Homeplug AV
• Pb-free (RoHS compliant)
For a full list of related documents, visit our website:
• ISL1571 device page
• UPA digital home standard
FN6387 Rev.3.00
Nov.7.19
Page 1 of 14
ISL1571
1.
1.1
1. Overview
Overview
Ordering Information
Part Number
(Notes 2, 3)
Part Marking
Temp. Range (°C)
Tape and Reel
(Units) (Note 1)
Package
(RoHS Compliant)
Pkg.
Dwg. #
ISL1571IRZ
157 1IRZ
-40 to +85
-
16 Ld QFN
L16.4x4H
ISL1571IRZ-T7
157 1IRZ
-40 to +85
1k
16 Ld QFN
L16.4x4H
ISL1571IUEZ
BBBDA
-40 to +85
-
10 Ld HMSOP
M10.118B
ISL1571IUEZ-T7
BBBDA
-40 to +85
1.5k
10 Ld HMSOP
M10.118B
Notes:
1. See 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), see the ISL1571 device page. For more information about MSL, see TB363.
1.2
Pin Configuration
INA+
3
GND
4
NC
VS+
OUTB
14
13
NC 2
OUTA 3
12 NC
11 INB-
VS(Note 4)
10 INB+
9
5
6
7
8
BIAS0
2
15
VS-
INA-
16
NC
1
VS+ 1
NC
NC
10 Ld HMSOP
Top View
OUTA
16 Ld QFN
Top View
9 INBVS(Note 5)
8 INB+
INA- 4
7 BIAS1
INA+ 5
6 BIAS0
BIAS1
Note:
5. Thermal pad must be connected to negative supply: VS-. HMSOP
package can be used in single supply applications only.
Note:
4. Thermal pad must be connected to negative supply: VS-. QFN
package can be used in single and dual supply applications.
1.3
10 OUTB
Pin Descriptions
16 Ld QFN
10 Ld HMSOP
Pin Name
1, 5, 6, 12, 15
2
NC
No Connect
2
4
INA-
Inverting Input of Amplifier A
3
5
INA+
Non-Inverting Input of Amplifier A
4
Thermal Pad
GND
Ground Connect
7
Thermal Pad
VS-
Negative Supply
8
6
BIAS0 (Note 6)
Current Control Bias Pin
9
7
BIAS1 (Note 6)
Current Control Bias Pin
10
8
INB+
Non-Inverting Input of Amplifier B
11
9
INB-
Inverting Input of Amplifier B
13
10
OUTB
14
1
VS+
16
3
OUTA
Function
Output of Amplifier B
Positive Supply
Output of Amplifier A
Note:
6. The single DSL port is comprised of amplifiers A and B. BIAS0 and BIAS1 control the IS settings for the DSL port.
FN6387 Rev.3.00
Nov.7.19
Page 2 of 14
ISL1571
2.
2.1
2. Specifications
Specifications
Absolute Maximum Ratings
Parameter
Minimum
Maximum
Unit
VS+ Voltage to Ground
-0.3
+13.2
V
VIN+ Voltage
GND
VS+
Current into any Input
8
mA
Continuous Output Current
75
mA
+6.6
V
BIAS0, BIAS1 to Ground
ESD Rating
Value
Unit
1
kV
1.5
kV
Human Body Model (Note 7)
Charge Device Model
CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions can adversely
impact product reliability and result in failures not covered by warranty.
Note:
7. Excludes C0 and C1 pins which show less than 1kV of HBM ESD sensitivity.
2.2
Thermal Information
Parameter
Minimum
Maximum
Unit
Ambient Operating Temperature Range
-40
+85
°C
Storage Temperature Range
-60
+150
°C
+150
°C
Operating Junction Temperature
Power Dissipation
See Curves
Pb-Free Reflow Profile
2.3
see TB493
Electrical Specifications
VS = 12V, RF = 750Ω, RL-DIFF = 50Ω, BIAS0 = BIAS1 = 0V, TA = +25°C, unless otherwise specified.
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
AC Performance
-3dB Bandwidth
Total Harmonic Distortion, Differential
Slew Rate, Single-ended
BW
THD
SR
RF = 750Ω, AV = +5
250
MHz
RF = 750Ω, AV = +10
200
MHz
f = 4MHz, VO = 4VP-P_DIFF, RL-DIFF = 100Ω
-75
dBc
f = 10MHz, VO = 4VP-P_DIFF, RL-DIFF = 100Ω
-80
dBc
f = 17MHz, VO = 4VP-P_DIFF, RL-DIFF = 100Ω
-79
dBc
1200
V/µs
VOUT from -3V to +3V
750
DC Performance
Offset Voltage Common Mode
VOS_CM
-40
+40
mV
Offset Voltage Differential Mode
VOS_DM
-7.5
+7.5
mV
Differential Transimpedance
ROL
VOUT = 12VP-P differential, unloaded
3.0
MΩ
Input Characteristics
Non-Inverting Input Bias Current
Inverting Input Bias Current Differential
Mode
Input Noise Voltage
FN6387 Rev.3.00
Nov.7.19
IB +
-7.0
IB- DM
-75
eN
3
6
+7.0
µA
+75
µA
nV√Hz
Page 3 of 14
ISL1571
2. Specifications
VS = 12V, RF = 750Ω, RL-DIFF = 50Ω, BIAS0 = BIAS1 = 0V, TA = +25°C, unless otherwise specified. (Continued)
Parameter
-Input Noise Current
Symbol
Test Conditions
Min
iN
Typ
Max
Unit
13
pA/√Hz
Output Characteristics
Loaded Output Swing (single ended)
Output Current
VOUT
IOUT
VS = ±6V, RL DIFF = 50Ω
±4.8
±5.0
V
VS = ±6V, RL DIFF = 20Ω
±4.35 ±4.7
V
RL = 0Ω
1000
mA
Supply
Supply Voltage
Positive Supply Current per Amplifier
VS
IS+ (Full Bias)
Single supply
4.5
VS = 4.5V, no load, BIAS0 = BIAS1 = 0V
12
V
21.5
mA
IS+ (Medium Bias)
VS = 4.5V, no load, BIAS0 = 5V, BIAS1 = 0V
11
mA
IS+ (Low Bias)
VS = 4.5V, no load, BIAS0 = 0V, BIAS1 = 5V
6.0
mA
VS = 4.5V, no load, BIAS0 = BIAS1 = 5V
0.6
1.0
mA
175
250
µA
+5
µA
IS+ (Power-down)
BIAS0, BIAS1 Input Current, High
IINH, BIAS0 or BIAS1 BIAS0, BIAS1 = 6V
BIAS0, BIAS1 Input Current, Low
IINL, BIAS0 or BIAS1
BIAS0, BIAS1 Input Voltage, High
VINH, BIAS0 or BIAS1
BIAS0, BIAS1 Input Voltage, Low
VINL, BIAS0 or BIAS1
FN6387 Rev.3.00
Nov.7.19
15
13.2
BIAS0, BIAS1 = 0V
100
-5
2.0
V
0.8
V
Page 4 of 14
ISL1571
3.
3. Typical Performance Curves
Typical Performance Curves
VS = ±6V
AV = 5
RL = 100Ω DIFF
RF = 500Ω
VS = ±6V
AV = 5
RL = 100Ω DIFF
RF = 750Ω
RF = 750Ω
RF = 1kΩ
RF = 1kΩ
Figure 1. Differential Frequency Response with Various
RF (Full Bias Mode)
VS = ±6V
AV = 5
RL = 100Ω DIFF
RF = 500Ω
RF = 500Ω
Figure 2. Differential Frequency Response with Various
RF (Medium Bias Mode)
VS = ±6V
AV = 10
RL = 100Ω DIFF
RF = 500Ω
RF = 750Ω
RF = 750Ω
RF = 1kΩ
RF = 1kΩ
Figure 3. Differential Frequency Response with Various
RF (Low Bias Mode)
VS = ±6V
AV = 10
RL = 100Ω DIFF
RF = 500Ω
RF = 750Ω
RF = 1kΩ
Figure 5. Differential Frequency Response with Various
RF (Medium Bias Mode)
FN6387 Rev.3.00
Nov.7.19
Figure 4. Differential Frequency Response with Various
RF (Full Bias Mode)
VS = ±6V
AV = 10
RL = 100Ω DIFF
RF = 500Ω
RF = 750Ω
RF = 1kΩ
Figure 6. Differential Frequency Response with Various
RF (Low Bias MODE)
Page 5 of 14
3. Typical Performance Curves
VS = ±6V
AV = 5
RF = 750Ω
RL = 100Ω DIFF
2nd HD
3rd HD
HARMONIC DISTORTION (dBc)c)
HARMONIC DISTORTION (dBc)
c)
ISL1571
2nd HD
VS = ±6V
AV = 5
RF = 750Ω
VO(P-P) = 4V
3rd HD
DIFFERENTIAL VOLTAGE OUTPUTP-P
VS = ±6V
AV = 5
RF = 750Ω
RL = 100Ω DIFF
Figure 8. 2nd and 3rd Harmonic Distortion vs RLOAD at
2MHz
HARMONIC DISTORTION (dBc)
c)
HARMONIC DISTORTION (dBc)
c)
Figure 7. Harmonic Distortion at 2MHz
2nd HD
3rd HD
2nd HD
VS = ±6V
AV = 5
RF = 50Ω
VO(P-P) = 4V
3rd HD
DIFFERENTIAL VOLTAGE OUTPUTP-P
2nd HD
3rd HD
VS = ±6V
AV = 5
RF = 750Ω
RL = 100Ω DIFF
Figure 10. 2nd and 3rd Harmonic Distortion vs RLOAD at
3MHz
HARMONIC DISTORTION (dBc)
c)
HARMONIC DISTORTION (dBc)
c)
Figure 9. Harmonic Distortion at 3MHz
VS = ±6V
AV = 5
RF = 750Ω
VOPP = 4V
2nd HD
3rd HD
DIFFERENTIAL VOLTAGE OUTPUTP-P
Figure 11. Harmonic Distortion at 5MHz
FN6387 Rev.3.00
Nov.7.19
Figure 12. 2nd and 3rd Harmonic Distortion vs RLOAD at
5MHz
Page 6 of 14
3. Typical Performance Curves
VS = ±6V
AV = 5
RF = 750Ω
RL = 100Ω DIFF
2nd HD
3rd HD
HARMONIC DISTORTION (dBc)
c)
HARMONIC DISTORTION (dBc)
c)
ISL1571
VS = ±6V
AV = 5
RF = 750Ω
VOPP = 4V
2nd HD
3rd HD
DIFFERENTIAL VOLTAGE OUTPUTP-P
HARMONIC DISTORTION (dBc)c)
Figure 13. Harmonic Distortion at 10MHz
VS = ±6V
AV = 5
RF = 750Ω
RL = 100Ω DIFF
2nd HD
Figure 14. 2nd and 3rd Harmonic Distortion vs RLOAD at
10MHz
IS+
ISFULL BIAS
MEDIUM BIAS
2nd HD
LOW BIAS
±VS (V)
DIFFERENTIAL VOLTAGE OUTPUTP-P
Figure 15. Harmonic Distortion at 17MHz
VS = ±6V
AV = 5
RF = 750Ω
RL= 100Ω
CL = 22pF
CL = 12pF
CL = 0pF
Figure 17. Frequency Response with Various CL
(Full Bias Mode)
FN6387 Rev.3.00
Nov.7.19
Figure 16. Supply Current vs Supply Voltage
VS = ±6V
AV = 5
RF = 750Ω
RL= 100Ω
CL = 22pF
CL = 12pF
CL = 0pF
Figure 18. Frequency Response vs Various CL
(Medium Bias Mode)
Page 7 of 14
ISL1571
3. Typical Performance Curves
VS = ±6V
AV = 5
RF = 750Ω
RL = 100Ω
VS = ±6V
CL = 22pF
PSRR+
CL = 12pF
CL = 0pF
PSRR-
Figure 20. PSRR vs Frequency
Figure 19. Frequency Response with Various CL
(Low Bias Mode)
10
4.5
VS = ±6V
AV = 1
RF = 750Ω
4.0
POWER DISSIPATION (W)
OUTPUT IMPEDANCE (Ω)
100
JEDEC JESD51-7 High Effective Thermal
Conductivity Test Board - Exposed Diepad
Soldered to PCB per JESD51-5
1.0
0.1
3.5
3.0
2.40W
2.5
2.0
2.02W
1.5
HMSOP10
θJA = +62°C/W
1.0
0.5
0.01
10k
100k
1M
10M
100M
FREQUENCY (Hz)
Figure 21. Output Impedance vs Frequency
FN6387 Rev.3.00
Nov.7.19
QFN16
θJA = +52°C/W
0
0
25
50
75 85 100
125
150
AMBIENT TEMPERATURE (°C)
Figure 22. Package Power Dissipation vs Ambient
Temperature
Page 8 of 14
ISL1571
4.
4. Product Description
Product Description
The ISL1571 is a dual operational amplifier designed for line driving in OFDM and PLC solutions. It is a dual
current-mode feedback amplifier with low distortion while drawing moderately low supply current. It is built using
the Renesas proprietary complimentary bipolar process and is offered in industry standard pin configurations. Due
to the current feedback architecture, the ISL1571 closed-loop 3dB bandwidth is dependent on the value of the
feedback resistor. First the desired bandwidth is selected by choosing the feedback resistor, RF, and then the gain
is set by picking the gain resistor, RG. The curves at the beginning of the “Typical Performance Curves” on page 5,
show the effect of varying both RF and RG. The 3dB bandwidth is somewhat dependent on the power supply
voltage.
4.1
Power Supply Bypassing and Printed Circuit Board Layout
As with any high frequency device, good printed circuit board layout is necessary for optimum performance.
Ground plane construction is highly recommended. Lead lengths should be as short as possible, below 0.25”. The
power supply pins must be well bypassed to reduce the risk of oscillation. A 4.7µF tantalum capacitor in parallel
with a 0.1µF ceramic capacitor is adequate for each supply pin. During power-up, it is necessary to limit the slew
rate of the rising power supply to within 1V/µs. If the power supply rising time is undetermined, a series 10Ω
resistor on the power supply line can be used to ensure the proper power supply rise time.
For good AC performance, parasitic capacitances is kept to a minimum, especially at the inverting input. This
implies keeping the ground plane away from this pin. Carbon resistors are acceptable, while use of wire-wound
resistors should be avoided because of their parasitic inductance. Similarly, capacitors should be low inductance
for best performance.
4.2
Capacitance at the Inverting Input
Due to the topology of the current feedback amplifier, stray capacitance at the inverting input affects the AC and
transient performance of the ISL1571 when operating in the non-inverting configuration.
In the inverting gain mode, added capacitance at the inverting input has little effect since this point is at a virtual
ground and stray capacitance is therefore not “seen” by the amplifier.
4.3
Feedback Resistor Values
The ISL1571 has been designed and specified with RF = 750Ω for AV = +5. This value of feedback resistor yields
extremely flat frequency response with 1dB peaking out to 250MHz. As is the case with all current feedback
amplifiers, wider bandwidth, at the expense of slight peaking, can be obtained by reducing the value of the
feedback resistor. Inversely, larger values of feedback resistor causes rolloff to occur at a lower frequency. See
the curves in the Typical Performance Curves beginning on page 5, which show 3dB bandwidth and peaking
versus frequency for various feedback resistors and various supply voltages.
4.4
Bandwidth vs Temperature
Whereas many amplifier's supply current (and consequently 3dB bandwidth) drop off at high temperature, the
ISL1571 was designed to have little supply current variations with temperature. An immediate benefit is the 3dB
bandwidth does not drop off drastically with temperature.
4.5
Supply Voltage Range
The ISL1571IRZ has been designed to operate with supply voltages from ±2.25V to ±6V nominal. Optimum
bandwidth, slew rate, and video characteristics are obtained at higher supply voltages.
4.6
Single Supply Operation
If a single supply is desired, values from +4.5V to +12V nominal can be used as long as the input common-mode
range is not exceeded. When using a single supply, be sure to either:
1. DC bias the inputs at an appropriate common-mode voltage and AC couple the signal, or:
2. Ensure the driving signal is within the common-mode range of the ISL1571. ISL1571IUEZ must be used in
single supply applications.
FN6387 Rev.3.00
Nov.7.19
Page 9 of 14
ISL1571
4.7
4. Product Description
PLC Modem Applications
The ISL1571 is designed as a line driver for PLC modems. It is capable of outputting 450mA of output current with
a typical supply voltage headroom of 1.3V. It can achieve -85dBc of distortion at low 7.1mA of supply current per
amplifier.
The average line power requirement for the PLC application is 13dBm (20mW) into a 100Ω line. The average line
voltage is 1.41VRMS. Using a differential drive configuration and transformer coupling with standard back
termination, a transformer ratio of 1:2 is selected. The circuit configuration is shown in Figure 23.
+
-
12.5
750
TX1
AFE
100
250Ω
+
-
1:2
12.5
750
Figure 23. Circuit Configuration
FN6387 Rev.3.00
Nov.7.19
Page 10 of 14
ISL1571
5.
5. Revision History
Revision History
Rev.
Date
3.00
Nov.7.19
Changed POD MDP0050 to POD M10.118B in the ordering information table and in the Package Outline
Drawings section.
2.00
Jun.14.19
Applied new formatting throughout.
Updated Ordering Information table:
Added Tape and Reel quantity column, added MSL note
Electrical Specifications table, Supply section:
Positive Supply Current per Amplifier, Test Conditions - added “VS = 4.5V, no load,”
POD MDP0046: Replaced POD MDP0046 with L16.4x4H.
Updated disclaimer.
FN6387 Rev.3.00
Nov.7.19
Description
Page 11 of 14
ISL1571
6.
6. Package Outline Drawings
Package Outline Drawings
For the most recent package outline drawing, see L16.4x4H.
L16.4x4H
16 Lead Quad Flat No-Lead Plastic Package
Rev 0, 1/12
2.40
4X 1.95
4.00
12X 0.65
A
B
6
PIN 1
INDEX AREA
6
PIN #1
INDEX AREA
16
13
1
4.00
12
2.40
9
(4X)
4
0.15
5
8
0.10 M C A B
16x 0.550±0.05
TOP VIEW
BOTTOM VIEW
4 0.30 ±0.05
SEE DETAIL "X"
0.90±0.10
0.10 C
C
BASE PLANE
SEATING PLANE
(3.6 TYP)
SIDE VIEW
(
(12x0.65)
2.40)
(16x0.30)
C
0 . 20 REF
5
(16x0.75)
+0.03/-0.02
TYPICAL RECOMMENDED LAND PATTERN
DETAIL "X"
NOTES:
1.
Dimensions are in millimeters.
Dimensions in ( ) for Reference Only.
2.
Dimensioning and tolerancing conform to ASME Y14.5m-1994.
3.
Unless otherwise specified, tolerance : Decimal ± 0.05
4.
Dimension 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.
FN6387 Rev.3.00
Nov.7.19
Page 12 of 14
ISL1571
6. Package Outline Drawings
M10.118B
For the most recent package outline drawing, see M10.118B.
10 Lead Heatsink Mini Small Outline Plastic Package (HMSOP, Heatsink MSOP)
Rev 2, 10/19
FN6387 Rev.3.00
Nov.7.19
Page 13 of 14
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