AD8143 Datasheet, PDF (1/24 Pages) Analog Devices – High Speed, Triple Differential Receiver with Comparators

FEATURES
High speed
160 MHz large signal bandwidth
1000 V/μs slew rate @ G = 1, VO = 2 V p-p
High CMRR: 65 dB @ 10 MHz
High differential input impedance: 5 MΩ
Input common-mode range: ±10.5 V (±12 V supplies)
User-adjustable gain
Wide power supply range: +5 V to ±12 V
Fast settling: 8 ns to 1%
Disable feature
Low offset: ±3.4 mV on 5 V supply
2 on-chip comparators
Small packaging: 32-lead, 5 mm × 5 mm LFCSP
APPLICATIONS
RGB video receivers
KVM (keyboard-video-mouse)
UTP (unshielded twisted pair) receivers
GENERAL DESCRIPTION
The AD8143 is a triple, low cost, differential-to-
single-ended receiver specifically designed for
receiving red-green-blue (RGB) signals over twisted
pair cable. It can also be used for receiving any type of
analog signal or high speed data transmission. Two
auxiliary comparators are provided to receive digital
or sync signals. The AD8143 can be used in conjunction
with the AD8133 and AD8134 triple, differential
drivers to provide a complete low cost solution for
RGB over Category-5 UTP cable applications,
including KVM.
The excellent common-mode rejection (65 dB @
10 MHz) of the AD8143 allows for the use of low cost
unshielded twisted pair cables in noisy environments.
High Speed, Triple Differential
Receiver with Comparators
AD8143
PIN CONFIGURATION
32 31 30 29 28 27 26 25
GND 1
24 GND
REF_G 2
23 OUT_B
FB_G 3
22 OUT_G
IN+_G 4
IN–_G 5
REF_R 6
FB_R 7
AD8143
B
A
21 OUT_R
20 V_S+
19 _{COMPB_IN+}
18 _{COMPB_IN–}
GND ⁸
17 _GND
9
10 11 12 13 14 15 16
Figure 1.
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. Closed-loop gain is easily
set using external resistors.
The AD8143 is available in a 5 mm × 5 mm, 32-lead LFCSP and
is rated to work over the extended industrial temperature range
of −40°C to +85°C.
Rev. 0
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