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I2C®-Compatible, Wide Bandwidth, Triple 2 × 2 Crosspoint Switch ADG799A/ADG799G
FEATURES
Bandwidth: 230 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 =184 ns, tOFF = 180 ns I2C-compatible interface Compact 24-lead LFCSP Two I2C-controllable logic outputs (ADG799G only) ESD protection 4 kV human body model 200 V machine model 1 kV field-induced charged device model
FUNCTIONAL BLOCK DIAGRAMS
VDD GND VDD GND
ADG799A
S1A S1B S2A S2B S3A S3B 2×2 CROSSPOINT 2×2 CROSSPOINT 2×2 CROSSPOINT D1A D1B D2A D2B D3A D3B S1A S1B S2A S2B S3A S3B
ADG799G
2×2 CROSSPOINT 2×2 CROSSPOINT 2×2 CROSSPOINT D1A D1B D2A D2B D3A D3B
I2C SERIAL INTERFACE
GPO1
I2C SERIAL INTERFACE
GPO2
06038-001
A0
A1
A2 SDA SCL
A0
A1
A2 SDA SCL
Figure 1. ADG799A and ADG799G
APPLICATIONS
RGB/YPbPr video switches HDTV Projection TV DVD-R/RW AV receivers
GENERAL DESCRIPTION
The ADG799A/ADG799G are monolithic CMOS devices comprising three 2 × 2 crosspoint switches 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 ADG799A/ADG799G the ideal switching solution for a wide range of TV applications including RGB and YPbPr video switches for picture-in picture applications. The switches conduct equally well in both directions when on. In the off condition, signal levels up to the supplies are blocked. The ADG799A/ADG799G switches exhibit break-before-make switching action. The ADG799G has two general-purpose logic output pins 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 user-adjustable I2C address
Rev. 0
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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 ADG799A/ADG799G operate from single 3 V or 5 V supply voltages and are available in a compact, 4 mm × 4 mm body, 24-lead, Pb-free LFCSP.
PRODUCT HIGHLIGHTS
1. 2. 3. 4. 5. 6. Wide bandwidth: 230 MHz. Ultralow power dissipation. Extended input signal range. Integrated I2C 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/ESD STM5.3.1-1999)
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ADG799A/ADG799G TABLE OF CONTENTS
Features .............................................................................................. 1 Applications....................................................................................... 1 Functional Block Diagrams............................................................. 1 General Description ......................................................................... 1 Product Highlights ........................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 I2C Timing Specifications............................................................ 7 Absolute Maximum Ratings............................................................ 9 ESD Caution.................................................................................. 9 Pin Configurations and Function Descriptions ......................... 10 Typical Performance Characteristics ........................................... 11 Test Circuits..................................................................................... 14 Terminology .................................................................................... 16 Theory of Operation ...................................................................... 17 I2C Serial Interface ..................