DS15BA101
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SNLS234J – OCTOBER 2006 – REVISED APRIL 2013
DS15BA101 1.5 Gbps Differential Buffer with Adjustable Output Voltage
Check for Samples: DS15BA101
FEATURES
DESCRIPTION
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The DS15BA101 is a high-speed differential buffer for
cable driving, level translation, signal buffering, and
signal repeating applications. Its fully differential
signal path ensures exceptional signal integrity and
noise immunity and it drives both differential and
single-ended transmission lines at data rates in
excess of 1.5 Gbps.
1
2
Data Rates from DC to 1.5+ Gbps
Differential or Single-ended Input
Adjustable Output Amplitude
Single 3.3V Supply
Industrial -40°C to +85°C Temperature
Low Power: 150 mW (typ) at 1.5 Gbps
Space-saving 3 x 3 mm WSON-8 Package
APPLICATIONS
Output voltage amplitude is adjustable via a single
external resistor for level translation and cable driving
applications into 50-ohm single-ended and 100-ohm
differential mode impedances.
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The DS15BA101 is powered from a single 3.3V
supply and consumes 150 mW (typ) at 1.5 Gbps. It
operates over the full −40°C to +85°C industrial
temperature range and is available in a space saving
3x3 mm WSON-8 package.
Cable Extension Applications
Level Translation
Signal Buffering and Repeating
Security Cameras
Typical Application
Serializer
LVPECL
50-ohm Coaxial Cable
(i.e. Belden 9914)
CML
DS15BA101
150 Mbps
to
1.5 Gbps
DS15EA101
Max Cable Loss ~ 35 dB @ 750 MHz
Deserializer
100-ohm Differential Cable
(i.e. CAT5e/6/7, Twinax)
LVDS
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2
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2006–2013, Texas Instruments Incorporated
DS15BA101
SNLS234J – OCTOBER 2006 – REVISED APRIL 2013
www.ti.com
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
Absolute Maximum Ratings (1)
−0.5V to 3.6V
Supply Voltage
−0.3V to VCC+0.3V
Input Voltage (all inputs)
Output Current
28 mA
−65°C to +150°C
Storage Temperature Range
Junction Temperature
+150°C
Lead Temperature
(Soldering 4 Sec)
Package Thermal Resistance
+260°C
θJA WSON-8
+90.7°C/W
θJC WSON-8
+41.2°C/W
ESD Rating (HBM)
5 kV
ESD Rating (MM)
250V
(1)
"Absolute Maximum Ratings" are those parameter values beyond which the life and operation of the device cannot be ensured. The
stating herein of these maximums shall not be construed to imply that the device can or should be operated at or beyond these values.
The table of "Electrical Characteristics" specifies acceptable device operating conditions.
Recommended Operating Conditions
Supply Voltage (VCC – GND):
3.3V ±5%
Operating Free Air Temperature (TA)
DS15BA101SD
−40°C to +85°C
DC Electrical Characteristics
Over Supply Voltage and Operating Temperature ranges, unless otherwise specified. (1) (2)
Symbol Parameter
Conditions
Reference
VICM
Input Common Mode Voltage
See Note (3)
IN+, IN-
VID
Differential Input Voltage Swing
VOS
Output Common Mode Voltage
VOUT
Output Voltage
ICC
(1)
(2)
(3)
(4)
2
Supply Current
OUT+, OUT-
Min
Typ
Max
Units
0.8
VCC –
VID/2
V
100
2000
mVP−P
VCC –
VOUT/2
V
Single-ended, 25Ω load
RVO = 953Ω 1%,
400
mVP-P
Single-ended, 25Ω load
RVO = 487Ω 1%,
800
mVP-P
See Note (4)
45
49
mA
Current flow into device pins is defined as positive. Current flow out of device pins is defined as negative. All voltages are stated
referenced to GND.
Typical values are stated for VCC = +3.3V and TA = +25°C.
Specification is ensured by characterization.
Maximum ICC is measured at VCC = +3.465V and TA = +70°C.
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SNLS234J – OCTOBER 2006 – REVISED APRIL 2013
AC Electrical Characteristics
Over Supply Voltage and Operating Temperature ranges, unless otherwise specified (1).
Symbol
Parameter
Conditions
(2)
DRMAX
Maximum Data Rate
See Note
tLHT
Output Low to High Transition
Time
20% – 80% (3)
tHLT
Output High to Low Transition
Time
tPLHD
Propagation Low to High Delay
See Note (2)
tPHLD
Propagation High to Low Delay
See Note (2)
tTJ
Total Jitter
1.5 Gbps
(1)
(2)
(3)
Reference
Min
Typ
IN+, IN-
1.5
2.0
OUT+, OUT-
Max
Units
Gbps
120
220
ps
120
220
ps
0.95
1.10
1.35
ns
0.95
1.10
1.35
ns
26
psP-P
Typical values are stated for VCC = +3.3V and TA = +25°C.
Specification is ensured by characterization.
Specification is ensured by characterization and verified by test.
CONNECTION DIAGRAM
IN+
1
8
OUT+
IN-
2
DAP
7
OUT-
GND
3
(GND)
6
GND
RVO
4
5
VCC
Figure 1. 8-Pad WSON
See NGQ Package
PIN DESCRIPTIONS
Pin #
Name
Description
1
IN+
Non-inverting input pin.
2
IN-
Inverting input pin.
3
GND
Circuit common (ground reference).
4
RVO
Output voltage amplitude control. Connect a resistor to VCC to set output voltage.
5
VCC
Positive power supply (+3.3V).
6
GND
Circuit common (ground reference).
7
OUT-
Inverting output pin.
8
OUT+
Non-inverting output pin.
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DS15BA101
SNLS234J – OCTOBER 2006 – REVISED APRIL 2013
www.ti.com
DEVICE OPERATION
INPUT INTERFACING
The DS15BA101 accepts either differential or single-ended input. The inputs are self-biased, allowing for simple
AC or DC coupling. DC-coupled inputs must be kept within the specified common-mode range. The IN+ and INpins are self-biased at approximately 2.1V with VCC = 3.3V. The following three figures illustrate typical DCcoupled interface to common differential drivers.
100: Differential T-Line
OUT+
IN+
100:
LVDS
DS15BA101
IN-
OUT-
Figure 2. Typical LVDS Driver DC-Coupled Interface to DS15BA101 Input
CML3.3V or CML2.5V
VCC
50:
50:
OUT+
100: Differential T-Line
IN+
100:
DS15BA101
IN-
OUT-
Figure 3. Typical CML Driver DC-Coupled Interface to DS15BA101 Input
100: Differential T-Line
OUT+
IN+
100:
LVPECL
DS15BA101
IN-
OUT50:
50:
Figure 4. Typical LVPECL Driver DC-Coupled Interface to DS15BA101 Input
OUTPUT INTERFACING
The DS15BA101 uses current mode outputs. Single-ended output levels are 400 mVP-P into AC-coupled 100Ω
differential cable (with RVO = 953Ω) or into AC-coupled 50Ω coaxial cable (with RVO = 487Ω). Output level is
controlled by the value of the RVO resistor connected between the RVO and VCC.
The RVO resistor should be placed as close as possible to the RVO pin. In addition, the copper in the plane layers
below the RVO network should be removed to minimize parasitic capacitance. The following figure illustrates
typical DC-coupled interface to common differential receivers and assumes that the receivers have high
impedance inputs. While most receivers have a common mode input range that can accomodate CML signals, it
is recommended to check respective receiver's datasheet prior to implementing the suggested interface
implementation.
4
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DS15BA101
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SNLS234J – OCTOBER 2006 – REVISED APRIL 2013
VCC
50:
50:
100: Differential T-Line
OUT+
IN+
DS15BA101
CML or
LVPECL or
LVDS
100:
IN-
OUT-
Figure 5. Typical DS15BA101 Output DC-Coupled Interface to an LVDS, CML or LVPECL Receiver
CABLE EXTENDER APPLICATION
The DS15BA101 together with the DS15EA101 form a cable extender chipset optimized for extending serial data
streams from serializer/deserializer (SerDes) pairs and field programmable gate arrays (FPGAs) over 100Ω
differential (i.e. CAT5e/6/7 and twinax) and 50Ω coaxial cables. Setting correct DS15BA101 output amplitude and
proper cable termination are keys for optimal operation. The following two figures show recommended chipset
configuration for 100Ω differential and 50Ω coaxial cables.
VCC
VCC
50:
953:
50:
0.1 PF
0.1 PF
100: Differential TP Cable
RVO
IN+
100:
1 PF
1 PF
OUT+
IN+
100:
DS15BA101
DS15EA101
1 PF
1 PF
IN-
OUT-
IN-
OUT+
OUT-
CAP+
CAP-
1 PF
Figure 6. Cable Extender Chipset Connection Diagram for 100Ω Differential Cables
VCC
VCC
50:
487:
50:
0.1 PF
0.1 PF
50: Coaxial Cable
IN+
100:
RVO
OUT+
1 PF
1 PF
IN+
50:
DS15BA101
OUT+
DS15EA101
1 PF
IN-
IN-
OUT25:
OUT-
CAP+
CAP-
1 PF
Figure 7. Cable Extender Chipset Connection Diagram for 50Ω Coaxial Cables
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Product Folder Links: DS15BA101
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DS15BA101
SNLS234J – OCTOBER 2006 – REVISED APRIL 2013
www.ti.com
REFERENCE DESIGN
There is a complete reference design (P/N: DriveCable02EVK) available for evaluation of the cable extender
chipset (DS15BA101 and DS15EA101). For more information, visit http://www.ti.com/tool/drivecable02evk.
Typical Performance
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Figure 8. 1.5 Gbps Differential DS15BA101 Output
RVO = 953Ω, H:100 ps / DIV, V:100 mV / DIV
Figure 9. 1.5 Gbps Single-ended DS15BA101 Output
RVO = 487Ω, H:100 ps / DIV, V:100 mV / DIV
Figure 10. 2.0 Gbps Differential DS15BA101 Output
RVO = 953Ω, H:100 ps / DIV, V:100 mV / DIV
Figure 11. 2.0 Gbps Single-ended DS15BA101 Output
RVO = 487Ω, H:100 ps / DIV, V:100 mV / DIV
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Copyright © 2006–2013, Texas Instruments Incorporated
Product Folder Links: DS15BA101
DS15BA101
www.ti.com
SNLS234J – OCTOBER 2006 – REVISED APRIL 2013
REVISION HISTORY
Changes from Revision I (April 2013) to Revision J
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Changed layout of National Data Sheet to TI format ............................................................................................................ 6
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Copyright © 2006–2013, Texas Instruments Incorporated
Product Folder Links: DS15BA101
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PACKAGE OPTION ADDENDUM
www.ti.com
10-Dec-2020
PACKAGING INFORMATION
Orderable Device
Status
(1)
Package Type Package Pins Package
Drawing
Qty
Eco Plan
(2)
Lead finish/
Ball material
MSL Peak Temp
Op Temp (°C)
Device Marking
(3)
(4/5)
(6)
DS15BA101SD/NOPB
ACTIVE
WSON
NGQ
8
1000
RoHS & Green
SN
Level-3-260C-168 HR
-40 to 85
BA101
DS15BA101SDE/NOPB
ACTIVE
WSON
NGQ
8
250
RoHS & Green
SN
Level-3-260C-168 HR
-40 to 85
BA101
DS15BA101SDX/NOPB
ACTIVE
WSON
NGQ
8
4500
RoHS & Green
SN
Level-3-260C-168 HR
-40 to 85
BA101
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance
do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may
reference these types of products as "Pb-Free".
RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption.
Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of
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