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Analog Devices - 32 x 16 Buffered Analog Crosspoint Switch

Numéro de référence AD8105
Description 32 x 16 Buffered Analog Crosspoint Switch
Fabricant Analog Devices 
Logo Analog Devices 





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AD8105 fiche technique
Data Sheet
FEATURES
High channel count, 32 × 16 high speed, nonblocking
switch array
Differential or single-ended operation
Differential G = +1 (AD8104) or G = +2 (AD8105)
Pin compatible with AD8117/AD8118, 32 × 32 switch arrays
Flexible power supplies
Single +5 V supply, or dual ±2.5 V supplies
Serial or parallel programming of switch array
High impedance output disable allows connection of
multiple devices with minimal loading on output bus
Excellent video performance
>50 MHz 0.1 dB gain flatness
0.05% differential gain error (RL = 150 Ω)
0.05° phase error (RL = 150 Ω)
Excellent ac performance
Bandwidth: 600 MHz
Slew rate: 1800 V/µs
Settling time: 2.5 ns to 1%
Low power of 1.7 W
Low all hostile crosstalk
< −70 dB at 5 MHz
< −40 dB at 600 MHz
Reset pin allows disabling of all outputs (connected through
a capacitor to ground provides power-on reset capability)
304-ball BGA package (31 mm × 31 mm)
APPLICATIONS
Routing of high speed signals including
RGB and component video routing
KVM
Compressed video (MPEG, wavelet)
Data communications
GENERAL DESCRIPTION
The AD8104/AD8105 are high speed, 32 × 16 analog crosspoint
switch matrices. They offer 600 MHz bandwidth and slew rate of
1800 V/µs for high resolution computer graphics (RGB) signal
switching. With less than −70 dB of crosstalk and −90 dB isola-
tion (at 5 MHz), the AD8104/AD8105 are useful in many high
speed applications. The 0.1 dB flatness, which is greater than
50 MHz, makes the AD8104/AD8105 ideal for composite video
switching.
The AD8104/AD8105 include 16 independent output buffers
that can be placed into a high impedance state for paralleling
crosspoint outputs so that off-channels present minimal loading
to an output bus. The AD8104 has a differential gain of +1,
Rev. A
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
600 MHz, 32 × 16 Buffered
Analog Crosspoint Switch
AD8104/AD8105
FUNCTIONAL BLOCK DIAGRAM
D0 D1 D2 D3 D4 D5 VDD DGND
AD8104/
AD8105
SER/PAR
WE
CLK
DATA IN
1
0
UPDATE
RESET
192-BIT SHIFT REGISTER
WITH 6-BIT
PARALLEL LOADING
96 96
PARALLEL LATCH
96
NO
CONNECT
DECODE
16
16 × 6:32 DECODERS
INPUT
RECEIVER
G = +1*
G = +2**
2
512 OUTPUT
BUFFER
G = +1
2
A0
A1
A2
A3
DATA
OUT
SWITCH
MATRIX
*AD8104 ONLY
**AD8105 ONLY
VPOS VNEG
VOCM
Figure 1.
while the AD8105 has a differential gain of +2 for ease of use
in back-terminated load applications. They operate as fully
differential devices or can be configured for single-ended
operation. Either a single +5 V supply or dual ±2.5 V supplies
can be used, while consuming only 340 mA of idle current with
all outputs enabled. The channel switching is performed via a
double-buffered, serial digital control (which can accommodate
daisy-chaining of several devices), or via a parallel control,
allowing updating of an individual output without reprogram-
ming the entire array.
The AD8104/AD8105 are packaged in a 304-ball BGA package
and are available over the extended industrial temperature
range of −40°C to +85°C.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ©2007–2016 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com

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