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ADG791A

Description
IC-compatible, wide bandwidth, quad, 2:1 multiplexer
Categoryaccessories   
File Size355KB,24 Pages
ManufacturerADI
Websitehttps://www.analog.com
Environmental Compliance  
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ADG791A Overview

IC-compatible, wide bandwidth, quad, 2:1 multiplexer

I
2
C-Compatible, Wide Bandwidth,
Quad, 2:1 Multiplexer
ADG791A/ADG791G
FEATURES
Bandwidth: 325 MHz
Low insertion loss and on resistance: 2.6 Ω typical
On resistance flatness: 0.3 Ω typical
Single 3 V/5 V supply operation
3.3 V analog signal range (5 V supply, 75 Ω load)
Low quiescent supply current: 1 nA typical
Fast switching times: t
ON
= 186 ns, t
OFF
= 177 ns
I
2
C®-compatible interface
Compact 24-lead LFCSP
ESD protection
4 kV human body model (HBM)
200 V machine model (MM)
1 kV field-induced charged device model (FICDM)
V
DD
FUNCTIONAL BLOCK DIAGRAM
GND
V
DD
GND
ADG791A
S1A
D1
S1B
S2A
D2
S2B
S3A
D3
S3B
S4A
D4
S4B
I
2
C SERIAL
INTERFACE
S4B
S3B
S4A
S2B
S3A
S1B
S2A
S1A
ADG791G
D1
D2
D3
D4
I
2
C SERIAL
INTERFACE
GPO1
06033-001
APPLICATIONS
S-video RGB/YPbPr video switches
HDTVs
Projection TVs
DVD-R/RW
AV receivers
A0
A1
A2 SDA SCL
A0
A1
A2 SDA SCL
Figure 1.
GENERAL DESCRIPTION
The ADG791A/ADG791G are monolithic CMOS devices
comprising four 2:1 multiplexers/demultiplexers controllable
via a standard I
2
C serial interface. The CMOS process provides
ultralow power dissipation yet gives high switching speed and
low on resistance.
The on-resistance profile is very flat over the full analog input
range and wide bandwidth ensures excellent linearity and low
distortion. These features, combined with a wide input signal
range make the ADG791A/ADG791G the ideal switching
solution for a wide range of TV applications including S-video,
RGB, and YPbPr video switches.
The switches conduct equally well in both directions when on.
In the off condition, signal levels up to the supplies are blocked.
The ADG791A/ADG791G switches exhibit break-before-make
switching action. The ADG791G has one general-purpose logic
output pin controlled by the I
2
C interface that can also be used
to control other non-I
2
C-compatible devices such as video filters.
The integrated I
2
C interface provides a large degree of flexibility
in the system design. It has three configurable I
2
C address pins
that allow up to eight devices on the same bus. This allows the
user to expand the capability of the device by increasing the size
of the switching array.
The ADG791A/ADG791G operate from a single 3 V or 5 V
supply voltage and is available in a compact 4 mm × 4 mm
body, 24-lead LFCSP.
PRODUCT HIGHLIGHTS
1.
2.
3.
4.
5.
6.
Wide bandwidth: 325 MHz.
Ultralow power dissipation.
Extended input signal range.
Integrated I
2
C serial interface.
Compact 4 mm × 4 mm, 24-lead, Pb-free LFCSP.
ESD protection tested as per ESD association standards:
4 kV HBM (ANSI/ESD STM5.1-2001)
200 V MM (ANSI/ESD STM5.2-1999)
1 kV FICDM (ANSI/ESDSTM5.3.1-1999)
Rev. 0
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.
Trademarks and registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
©2006 Analog Devices, Inc. All rights reserved.

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