
REV. 0
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reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
a
AD8110/AD8111*
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
Analog Devices, Inc., 1997
260 MHz, 16
3
8 Buffered
Video Crosspoint Swtches
FUNCT IONAL BLOCK DIAGRAM
AD8110/AD8111
MATRIX
OUTPUT
G = +2
40
40
128
40-BIT SHIFT REGISTER
WITH 5-BIT
PARALLEL LOADING
PARALLEL LATCH
DECODE
8
3
5:16 DECODERS
8
CLK
DATA IN
UPDATE
CE
RESET
16 INPUTS
A0
A1
A2
DATA OUT
8 OUTPUTS
S
R
T
SER
/PAR
D0 D1 D2 D3
E
D4
FEATURES
16
3
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
3
8 Switch
Arrays
For a 16
3
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 (R
L
= 150
V
)
0.02
8
Differential Phase Error (R
L
= 150
V
)
Excellent AC Performance
260 MHz –3 dB Bandwidth
500 V/
m
s 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 “ Power-
On” Reset Capability)
Excellent ESD Rating: Exceeds 4000 V Human Body
Model
80-Lead TQFP Package (12 mm
3
12 mm)
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 DE SCRIPT ION
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
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.
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.
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.