a
260 MHz, 16 ؋ 8 Buffered
Video Crosspoint Switches
AD8110/AD8111
APPLICATIONS
Routing of High-Speed Signals Including:
Composite Video (NTSC, PAL, S, SECAM)
Component Video (YUV, RGB)
Compressed Video (MPEG, Wavelet)
3-Level Digital Video (HDB3)
PRODUCT DESCRIPTION
The AD8110 and AD8111 are high-speed 16 × 8 video crosspoint switch matrices. They offer a –3 dB signal bandwidth
greater than 260 MHz, and channel switch times of less than
25 ns with 1% settling. With –78 dB of crosstalk and –97 dB
isolation (@ 5 MHz), the AD8110/AD8111 are useful in many
high-speed applications. The differential gain and differential
Rev. B
FUNCTIONAL BLOCK DIAGRAM
SER/PAR
D0 D1 D2 D3 D4
A0
A1
CLK
DATA IN
A2
40-BIT SHIFT REGISTER
WITH 5-BIT
PARALLEL LOADING
UPDATE
CE
40
PARALLEL LATCH
RESET
40
DECODE
8 ؋ 5:16 DECODERS
AD8110/AD8111
128
SWITCH
MATRIX
16 INPUTS
DATA
OUT
SET INDIVIDUAL
OR RESET ALL
OUTPUTS
TO "OFF"
8
OUTPUT
BUFFER
G = +1,
G = +2
ENABLE/DISABLE
FEATURES
16 ؋ 8 High-Speed Nonblocking Switch Arrays
AD8110: G = +1
AD8111: G = +2
Serial or Parallel Switch Array Control
Serial Data Out Allows “Daisy Chaining” of Multiple
Crosspoints to Create Larger Switch Arrays
Pin-Compatible with AD8108/AD8109 8 ؋ 8 Switch
Arrays
For a 16 ؋ 16 Array See AD8116
Complete Solution
Buffered Inputs
Eight Output Amplifiers, AD8110 (G = +1),
AD8111 (G = +2)
Drives 150 V Loads
Excellent Video Performance
60 MHz 0.1 dB Gain Flatness
0.02% Differential Gain Error (RL = 150 V)
0.028 Differential Phase Error (RL = 150 V)
Excellent AC Performance
260 MHz –3 dB Bandwidth
500 V/ms Slew Rate
Low Power of 50 mA
Low All Hostile Crosstalk of –78 dB @ 5 MHz
Output Disable Allows Direct Connection of Multiple
Device Outputs
Reset Pin Allows Disabling of All Outputs (Connected
Through a Capacitor to Ground Provides “PowerOn” Reset Capability)
Excellent ESD Rating: Exceeds 4000 V Human Body
Model
80-Lead LQFP Package (12 mm ؋ 12 mm)
8 OUTPUTS
phase of better than 0.02% and 0.02° respectively, along with
0.1 dB flatness out to 60 MHz, make the AD8110/AD8111
ideal for video signal switching.
The AD8110 and AD8111 include eight independent output
buffers that can be placed into a high impedance state for paralleling crosspoint outputs so that off channels do not load the
output bus. The AD8110 has a gain of +1, while the AD8111
offers a gain of +2. They operate on voltage supplies of ± 5 V
while consuming only 50 mA of idle current. The channel
switching is performed via a serial digital control (which can
accommodate “daisy chaining” of several devices) or via a parallel
control, allowing updating of an individual output without reprogramming the entire array.
The AD8110/AD8111 is packaged in an 80-lead LQFP package
and is available over the extended industrial temperature range
of –40°C to +85°C.
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