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Preliminary Technical Data
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
I2C® Compatible, Wide Bandwidth, Hex 2:1 Multiplexer ADG796A
FUNCTIONAL BLOCK DIAGRAM
VDD GND
ADG796A
S1A D1 S1B S2A D2 S2B S3A D3 S3B S4A
APPLICATIONS
S-Video RGB/YPbPr video switches HDTV Projection TV DVD-R/RW AV receivers
S4B S5A
D4
D5 S5B S6A D6 S6B I2C SERIAL INTERFACE
06036-001
A0
A1 SDA SCL
Figure 1.
GENERAL DESCRIPTION
The ADG796A is a monolithic CMOS device comprising six 2:1 multiplexer/demultiplexers controllable via a standard I2C serial interface. The CMOS process provides ultralow power dissipation, yet offers 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 ADG796A the ideal switching solution for a wide range of TV applications including S-Video, YPbPr and RGB 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 ADG796A switches exhibit break-before-make switching action. The integrated I2C interface provides a large degree of flexibility in the system design. It has two user adjustable I2C address pins that allow up to four 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 ADG796A operates from a single 3 V or 5 V supply voltage and is available in a compact 4 mm × 4 mm body, 24-lead, leadfree LFCSP.
PRODUCT HIGHLIGHTS
1. 2. 3. 4. 5. Wide bandwidth: 325 MHz. Ultralow power dissipation. Extended input signal range. Integrated I2C serial interface Compact 4 mm × 4 mm, 24-lead, lead-free LFCSP.
Rev. Pr.G
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ADG796A 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 Configuration and Function Descriptions........................... 10 Typical Performance Characteristics ........................................... 11
Preliminary Technical Data
Test Circuits..................................................................................... 14 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 ...................................................