2
250MHz Triple Differential Receiver/ Equalizer with I C
Interface
ISL59911
Features
The ISL59911 is a triple channel differential receiver and
equalizer optimized for RGB and YPbPr video signals. It
contains three high speed differential receivers with
programmable frequency compensation. The ISL59911
features manual or automatic offset calibration and ±4dB of
gain adjustment range with a resolution of 0.1dB.
• 250MHz -3dB bandwidth
• 5 Adjustable EQ bands: 100MHz, 20MHz, 6MHz, 1MHz, and
200kHz
• 3rd-order lowpass filter at output with programmable corner
• ±4dB fine gain control with 0.1dB (7-bit) resolution
• Offset calibration minimizes output offset voltage
The ISL59911 has a bandwidth of 250MHz and consumes only
110mA from a ±5V supply in normal operation.
• Decodes H
and V signals embedded in common
SYNC
SYNC
mode
2
When deasserted, the ENABLE pin puts the amplifiers into a
low power, high impedance state, minimizing power when not
needed and also allowing multiple devices to be connected in
parallel, allowing two or more ISL59911 devices to function as
a multiplexer.
• I C interface with four unique addresses
• ±5V supplies @ 110mA
• 32 Ld 5mm x 6mm QFN package
The ISL59911 can also directly decode the sync signals
encoded onto the common modes of three pairs of Cat 5 cable
(by an ISL59311, EL4543, or similar device) or it can output
the actual common mode voltages for each of the three
channels.
Applications
• KVM monitor extension
• Digital signage
• General-purpose twisted-pair receiving and equalization
• High-resolution security video
The ISL59911 is available in a 32 Ld QFN package and is
specified for operation over the full -40°C to +85°C
temperature range.
TWISTED-PAIR RGB VIDEO RECEIVER
+5V
-5V
*
*
CBYPASS
CBYPASS
x3
*See “Power Supply Bypassing” on
page 10 for more information.
x3
TERMINATION
NETWORK
V+ V- and
THERMAL
PAD
ISL59920
ISL59921
ISL59922
or
RIN
+
ROUT
GOUT
BOUT
UP TO 300m OF
1k
50
50
CAT X CABLE
ISL59311
OR
EL4543
75 x3
ISL59923
ISL59911
50
0.1µF
RIN
-
VIDEO
DELAY
LINE
TRIPLE
DIFFERENTIAL
VIDEO
RREF
GREF
BREF
GIN
GIN
+
-
TERMINATION
NETWORK
DRIVER
74HC04 or
SIMILAR
BIN
BIN
+
-
TERMINATION
NETWORK
HSOUT/RCM
VSOUT/GCM
BCM
+5V +5V
ADDR0
ADDR1
RP
RP
SCL
SDA
SYSTEM
MICRO-
NC
CONTROLLER
I2C INTERFACE
ENABLE
GND
FIGURE 1. TYPICAL APPLICATION CIRCUIT
September 2, 2011
FN7548.0
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 |Copyright Intersil Americas Inc. 2011. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.
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