a
Video Crosspoint Switches
AD8110/AD8111*
FUNCTIO NAL BLO CK D IAGRAM
FEATURES
16 ؋
8 High Speed Nonblocking Sw itch Arrays
AD8110: G = +1
AD8111: G = +2
SER/PAR
D0 D1 D2 D3 D4
A0
A1
Serial or Parallel Sw itch Array Control
Serial Data Out Allow s “Daisy Chaining” of Multiple
Crosspoints to Create Larger Sw itch Arrays
Pin Com patible w ith AD8108/ AD8109 8 ؋
8 Sw itch
Arrays
CLK
A2
40-BIT SHIFT REGISTER
WITH 5-BIT
PARALLEL LOADING
DATA OUT
DATA IN
UPDATE
40
For a 16 ؋
16 Array See AD8116
Com plete Solution
Buffered Inputs
PARALLEL LATCH
40
CE
RESET
8
DECODE
Eight Output Am plifiers, AD8110 (G = +1),
AD8111 (G = +2)
Drives 150 ⍀ Loads
AD8110/AD8111
OUTPUT
BUFFER
G = +1,
G = +2
128
Excellent Video Perform ance
60 MHz 0.1 dB Gain Flatness
0.02% Differential Gain Error (RL = 150 ⍀)
0.02؇ Differential Phase Error (RL = 150 ⍀)
Excellent AC Perform ance
SWITCH
MATRIX
260 MHz –3 dB Bandw idth
500 V/ s Slew Rate
Low Pow er of 50 m A
16 INPUTS
8 OUTPUTS
Low All Hostile Crosstalk of –78 dB @ 5 MHz
Output Disable Allow s Direct Connection of Multiple
Device Outputs
Reset Pin Allow s Disabling of All Outputs (Connected
Through a Capacitor to Ground Provides “Pow er-
On” Reset Capability)
Excellent ESD Rating: Exceeds 4000 V Hum an Body
Model
80-Lead TQFP Package (12 m m ؋
12 m m )
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.
APPLICATIONS
T he AD8110 and AD8111 include eight independent output
buffers that can be placed into a high impedance state for paral-
leling crosspoint outputs so that off channels do not load the
output bus. T he AD8110 has a gain of +1, while the AD8111
offers a gain of +2. T hey operate on voltage supplies of ±5 V
while consuming only 50 mA of idle current. T he channel
switching is performed via a serial digital control (which can
accommodate “daisy chaining” of several devices) or via a paral-
lel control, allowing updating of an individual output without re-
programing the entire array.
Routing of High Speed Signals Including:
Com posite Video (NTSC, PAL, S, SECAM)
Com ponent Video (YUV, RGB)
Com pressed Video (MPEG, Wavelet)
3-Level Digital Video (HDB3)
P RO D UCT D ESCRIP TIO N
T he AD8110 and AD8111 are high speed 16 × 8 video cross-
point switch matrices. T hey 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. T he differential gain and differential
T he AD8110/AD8111 is packaged in an 80-lead T QFP package
and is available over the extended industrial temperature range
of –40°C to +85°C.
*Patent Pending.
REV. 0
Inform ation furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assum ed by Analog Devices for its
use, nor for any infringem ents of patents or other rights of third parties
which m ay result from its use. No license is granted by im plication or
otherwise under any patent or patent rights of Analog Devices.
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© Analog Devices, Inc., 1997