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Analog Devices Semiconductor Electronic Components Datasheet

ADG791A Datasheet

(ADG791A / ADG791G) 2:1 Multiplexer

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ADG791A pdf
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I2C-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: tON = 186 ns, tOFF = 177 ns
I2C®-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)
APPLICATIONS
S-video RGB/YPbPr video switches
HDTVs
Projection TVs
DVD-R/RW
AV receivers
GENERAL DESCRIPTION
The ADG791A/ADG791G are monolithic CMOS devices
comprising four 2:1 multiplexers/demultiplexers controllable
via a standard I2C 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 I2C interface that can also be used
to control other non-I2C-compatible devices such as video filters.
The integrated I2C interface provides a large degree of flexibility
in the system design. It has three configurable I2C address pins
FUNCTIONAL BLOCK DIAGRAM
VDD GND
VDD GND
ADG791A
ADG791G
S1A S1A
D1 D1
S1B S1B
S2A S2A
D2 D2
S2B S2B
S3A S3A
D3 D3
S3B S3B
S4A S4A
D4 D4
S4B S4B
I2C SERIAL
INTERFACE
I2C SERIAL
INTERFACE
GPO1
A0 A1 A2 SDA SCL
Figure 1.
A0 A1 A2 SDA SCL
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. Wide bandwidth: 325 MHz.
2. Ultralow power dissipation.
3. Extended input signal range.
4. Integrated I2C serial interface.
5. Compact 4 mm × 4 mm, 24-lead, Pb-free LFCSP.
6. 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.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
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.


Analog Devices Semiconductor Electronic Components Datasheet

ADG791A Datasheet

(ADG791A / ADG791G) 2:1 Multiplexer

No Preview Available !

ADG791A pdf
ADG791A/ADG791G
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
Functional Block Diagram .............................................................. 1
General Description ......................................................................... 1
Product Highlights ........................................................................... 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
I2C Timing Specifications............................................................ 7
Timing Diagram ........................................................................... 8
Absolute Maximum Ratings............................................................ 9
ESD Caution.................................................................................. 9
Pin Configurations and Function Descriptions ......................... 10
Typical Performance Characteristics ........................................... 11
Test Circuits..................................................................................... 14
REVISION HISTORY
7/06—Revision 0: Initial Version
Terminology .................................................................................... 16
Theory of Operation ...................................................................... 17
I2C Serial Interface ..................................................................... 17
I2C Address.................................................................................. 17
Write Operation.......................................................................... 17
LDSW Bit..................................................................................... 19
Power On/Software Reset.......................................................... 19
Read Operation........................................................................... 19
Evaluation Board ............................................................................ 20
Using the ADG791G Evaluation Board .................................. 20
Outline Dimensions ....................................................................... 23
Ordering Guide .......................................................................... 23
Rev. 0 | Page 2 of 24


Part Number ADG791A
Description (ADG791A / ADG791G) 2:1 Multiplexer
Maker Analog Devices
Total Page 24 Pages
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