High-Speed Triple Differential Receiver with
Comparators
Preliminary Technical Data
AD8143
Rev. PrB
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FEATURES
High Speed
300MHz, 1000V/ µs @ G = 1, VO = 1 V P-P
High CMRR: 70dB @ 10MHz
High Differential Input Impedance: 6MΩ
Imput Common Mode Range: ± 10 V (± 12 V Supplies)
User Adjustable Gain
Wide Power Supply range: + 4.5V to ± 12V
Fast Settling: 2ns to 1%, 5 ns to 0.1%
Low Noise: 12 nV/√ Hz
Small Packaging: 32-Pin 5 x 5 mm LFCSP Package
APPLICATIONS
RGB Video Receiver
KVM (Keyboard-Video-Mouse)
UTP (Unshielded Twisted Pair) Receiver
PINOUT DIAGRAM
GENERAL DESCRIPTION
The AD8143 is a triple, low cost differential to single ended
receiver specifically designed for receiving RGB (red-green-
blue) signals over twisted pair cable but can also be used for
receiving any type of analog signal or high speed data
transmission. Two auxiliary comparators are also provided
to receive digital or sync signals. The AD8143 can be used
in conjunction with the AD8133 triple, differential driver to
provide a complete low cost solution for RGB over Category-
5 unshielded twisted pair (UTP) cable applications including
KVM (keyboard-video-mouse).
The excellent common-mode rejection (60dB @ 10 MHz) of
the AD8143 allows for the use of low cost unshielded twisted
pair cables in noisy environments.
The AD8143 has a wide power supply range from single 5 V
supply to ± 12 V, which allows for a wide common-mode
range. The wide common mode input range of the AD8143
maintains signal integrity in systems where the ground
potential is a few volts different between the drive and
receive ends without the use of isolation transformers.
The AD8143 is stable at a gain of 1. The closed-loop gain
can easily be set by external resistors.
The AD8143 is available in a 5 mm x 5 mm 32 lead LFCSP
package and is rated to work over the extended industrial
temperature range, -40ºC to +85ºC.
AD8143 Preliminary Technical Data
Rev. PrB| Page 2 of 6
TABLE OF CONTENTS
Specifications with ± 12 V Supply.................................................. 3
Specifications with ± 5 V Supply.................................................... 4
Specifications with + 5 V Supply.................................................... 5
Outline Dimensions..........................................................................6
Ordering Guide..................................................................................6
REVISION HISTORY
Revision 0: Initial Version (01/10/2004)
Revision A: Changed to 32 pin 5 mm x 5 mm LFCSP package (12/22/2004)
Revision B: Changed Spec Tables re: RL, SSBW, LSBW (VOUT = 1 Vpp & 2 Vpp), SR, Is (03/07/2005), updated description (3/7/2005)
Preliminary Technical Data AD8143
Rev. PrB | Page 3 of 6
AD8143— SPECIFICATIONS
(TA=25°C, Vs = ± 12V, REF= 0V, RL= 150 Ω, CL=2 pF, G = +1, TMIN to TMAX = -40C to +85C unless otherwise noted.)
Parameter Conditions Min Typ Max Unit
DYNAMIC PERFORMANCE
-3dB Bandwidth Vout = 0.2Vp-p 360 MHz
V
out = 1 Vp-p 330 MHz
V
out = 2 V p-p, RL = 150Ω 250 MHz
Bandwidth for 0.1dB Flatness Vout = 0.2Vp-p 50 MHz
Slew Rate Vout = 2Vp-p 1000 V/µs
Settling Time Vout = 2Vp-p, 1.0% 2.0 ns
V
out = 2Vp-p, 0.1% 5.0 ns
Rise and Fall Time Vout = 1Vp-p, 10% to 90% 1.0 ns
Output Overdrive Recovery 40 ns
NOISE/DISTORTION
Second Harmonic Vout = 1 Vp-p, 1MHz -75 dBc
Third Harmonic Vout = 1 Vp-p, 1MHz -78 dBc
Crosstalk Vout = 1 Vp-p, 10MHz -60 dB
Input Voltage Noise (RTI) f ≥10
k
Hz 12
nV
/
√
Hz
Differential Gain Error NTSC, 200 IRE, RL ≥150Ω 0.15 %
Differential Phase Error NTSC, 200 IRE, RL ≥150Ω 0.15 °
INPUT CHARACTERISTICS
Common-Mode Rejection f = DC to 100kHz, VCM = -3V to +3.5V 110 dB
V
CM = 1 Vp-p, f =10MHz 70 dB
V
CM = 1Vp-p, f = 100MHz 40 dB
Common-Mode Voltage Range V+IN – V-IN = 0V ±10.5 V
Differential Operating Range ±2.5 V
Resistance Differential 6 MΩ
Common-Mode 4 MΩ
Capacitance Differential 3 pF
Common-Mode 4 pF
DC PERFORMANCE
Open-Loop Gain VOUT = ±1V 74 dB
Input Offset Voltage 0.5 10 mV
T
MIN to TMAX 10
µV/°C
Input Bias Current (+IN, -IN) ± 0.5 ± 2.0 µA
Input Bias Current (REF, FB) ±1.0 ± 3.5 µA
Input Bias Current Drift TMIN to TMAX (+IN, -IN, REF, FB) 5 nA/°C
Input Offset Current (+IN, -IN, REF, FB) ± 0.08 ± 0.4 µA
Input Offset Current Drift TMIN to TMAX 0.2
nA/°C
OUTPUT PERFORMANCE
Voltage Swing RLOAD = 150Ω / 1kΩ 3.6 / 4.0 ± V
Output Current 40 mA
Short Circuit Current 60 mA
POWER SUPPLY
Quiescent Supply Current Total 45 mA
AD8143 Preliminary Technical Data
Rev. PrB| Page 4 of 6
AD8143— SPECIFICATIONS
(TA=25°C, VS= ± 5 V, REF= 0V, RL=150 Ω, CL= 2 pF, G = +1, TMIN to TMAX = -40 to +85C unless otherwise noted.)
Parameter Conditions Min Typ Max Unit
DYNAMIC PERFORMANCE
-3dB Bandwidth Vout = 0.2Vp-p 300 MHz
V
out = 1 Vp-p 250 MHz
V
out = 2 V p-p, RL = 150Ω 250 MHz
Bandwidth for 0.1dB Flatness Vout = 0.2Vp-p 50 MHz
Slew Rate Vout = 2Vp-p 1000 V/µs
Settling Time Vout = 2Vp-p, 1.0% 2.0 ns
V
out = 2Vp-p, 0.1% 5.0 ns
Rise and Fall Time Vout = 1Vp-p, 10% to 90% 1.0 ns
Output Overdrive Recovery 40 ns
NOISE/DISTORTION
Second Harmonic Vout = 1 Vp-p, 1MHz -75 dBc
Third Harmonic Vout = 1 Vp-p, 1MHz -78 dBc
Crosstalk Vout = 1 Vp-p, 10MHz -60 dB
Input Voltage Noise (RTI) f ≥10
k
Hz 12
nV
/
√
Hz
Differential Gain Error NTSC, 200 IRE, RL ≥150Ω 0.15 %
Differential Phase Error NTSC, 200 IRE, RL ≥150Ω 0.15 °
INPUT CHARACTERISTICS
Common-Mode Rejection f = DC to 100kHz, VCM = -3V to +3.5V 110 dB
V
CM = 1 Vp-p, f =10MHz 70 dB
V
CM = 1Vp-p, f = 100MHz 40 dB
Common-Mode Voltage Range V+IN – V-IN = 0V ±3.8 V
Differential Operating Range ±2.5 V
Resistance Differential 6 MΩ
Common-Mode 4 MΩ
Capacitance Differential 3 pF
Common-Mode 4 pF
DC PERFORMANCE
Open-Loop Gain VOUT = ±1V 74 dB
Input Offset Voltage 0.5 10 mV
T
MIN to TMAX 10
µV/°C
Input Bias Current (+IN, -IN) ± 0.5 ± 2.0 µA
Input Bias Current (REF, FB) ±1.0 ± 3.5 µA
Input Bias Current Drift TMIN to TMAX (+IN, -IN, REF, FB) 5 nA/°C
Input Offset Current (+IN, -IN, REF, FB) ± 0.08 ± 0.4 µA
Input Offset Current Drift TMIN to TMAX 0.2
nA/°C
OUTPUT PERFORMANCE
Voltage Swing RLOAD = 150Ω / 1kΩ 3.6 / 4.0 ± V
Output Current 40 mA
Short Circuit Current 60 mA
POWER SUPPLY
Quiescent Supply Current Total 35 mA
Preliminary Technical Data AD8143
Rev. PrB | Page 5 of 6
AD8143— SPECIFICATIONS
(TA=25°C, Vs= +5 V, REF= 0V, RL=150Ω, CL= 2pF, G= +1, TMIN to TMAX = -40 to +85C unless otherwise noted.)
Parameter Conditions Min Typ Max Unit
DYNAMIC PERFORMANCE
-3dB Bandwidth Vout = 0.2Vp-p 210 MHz
V
out = 2 V p-p, RL = 150Ω 130 MHz
Bandwidth for 0.1dB Flatness Vout = 0.2Vp-p 30 MHz
Slew Rate Vout = 2Vp-p 950 V/µs
Settling Time Vout = 2Vp-p, 1.0% 2.0 ns
V
out = 2Vp-p, 0.1% 5.0 ns
Rise and Fall Time Vout = 1Vp-p, 10% to 90% 1.0 ns
Output Overdrive Recovery 40 ns
NOISE/DISTORTION
Second Harmonic Vout = 1 Vp-p, 1MHz -68 dBc
Third Harmonic Vout = 1 Vp-p, 1MHz -72 dBc
Crosstalk Vout = 1 Vp-p, 10MHz -60 dB
Input Voltage Noise (RTI) f ≥10
k
Hz 12
nV
/
√
Hz
Differential Gain Error NTSC, 200 IRE, RL ≥150Ω 0.15 %
Differential Phase Error NTSC, 200 IRE, RL ≥150Ω 0.15 °
INPUT CHARACTERISTICS
Common-Mode Rejection f = DC to 100kHz, VCM = -3V to +3.5V 96 dB
V
CM = 1 Vp-p, f =10MHz 70 dB
V
CM = 1Vp-p, f = 100MHz 40 dB
Common-Mode Voltage Range V+IN – V-IN = 0V 1.2 3.8 V
Differential Operating Range ±2.3 V
Resistance Differential 6 MΩ
Common-Mode 4 MΩ
Capacitance Differential 3 pF
Common-Mode 4 pF
DC PERFORMANCE
Open-Loop Gain VOUT = ±1V 71 dB
Input Offset Voltage 0.5 10 mV
T
MIN to TMAX 10
µV/°C
Input Bias Current (+IN, -IN) ± 0.5 ± 2.0 µA
Input Bias Current (REF, FB) ±1.0 ± 3.5 µA
Input Bias Current Drift TMIN to TMAX (+IN, -IN, REF, FB) 5 nA/°C
Input Offset Current (+IN, -IN, REF, FB) ± 0.08 ± 0.4 µA
Input Offset Current Drift TMIN to TMAX 0.2
nA/°C
OUTPUT PERFORMANCE
Voltage Swing RLOAD = 150Ω / 1kΩ 1.4 / 1.0 3.6 / 4.0 ± V
Output Current 35 mA
Short Circuit Current 60 mA
POWER SUPPLY
Quiescent Supply Current Total 35 mA
AD8143 Preliminary Technical Data
Rev. PrB| Page 6 of 6
OUTLINE DIMENSIONS
COMPLIANT TO JEDEC STANDARDS MO-220-VHHD-2
0.30
0.23
0.18
0.20 REF
0.80 MAX
0.65 TYP
0.05 MAX
0.02 NOM
12° MAX
1.00
0.85
0.80 SEATING
PLANE
COPLANARITY
0.08
1
32
8
9
25
24
16
17
0.50
0.40
0.30
3.50 REF
0.50
BSC
PIN 1
INDICATOR TOP
VIEW
5.00
BSC SQ
4.75
BSC SQ 3.45
3.30 SQ
3.15
PIN 1
INDICATOR
0.60 MAX
0.60 MAX
0.25 MIN
EXPOSED
PAD
(BOTTOM VIEW)
Figure 1. 32-Lead Lead Frame Chip Scale Package [LFCSP], 5 mm × 5 mm Body (CP-32-3)—Dimensions shown in millimeters
ORDERING GUIDE
Model Temperature Range Package Description Package Option
AD8143ACPZ-R21 –40°C to +85°C 32-Lead Lead Frame Chip Scale Package (LFCSP) CP-32-3
AD8143ACPZ-RL1 –40°C to +85°C 32-Lead Lead Frame Chip Scale Package (LFCSP) CP-32-3
AD8143ACPZ-RL71 –40°C to +85°C 32-Lead Lead Frame Chip Scale Package (LFCSP) CP-32-3
1 Z = Pb-free part.
PR05538-0-5/05(PrB)