350 MHz Single-Supply (5 V) Triple 2:1 Multiplexers AD8188/AD8189 FEATURES FUNCTIONAL BLOCK DIAGRAM Fully buffered inputs and outputs IN0A 1 24 V CC Fast channel-to-channel switching: 4 ns D 2 23 OE GND LOGIC Single-supply operation (5 V) IN1A 3 22 SEL A/B SELECT High speed V 4 21 V REF CC ENABLE 0 IN2A 5 20 OUT0 350 MHz bandwidth (3 dB) 200 mV p-p V 6 19 V CC EE 300 MHz bandwidth (3 dB) 2 V p-p 1 V 7 18 OUT1 EE Slew rate: 1000 V/s IN2B 8 17 V CC Fast settling time: 7 ns to 0.1% 2 V 9 16 OUT2 EE Low current: 19 mA/20 mA IN1B 10 15 V EE Excellent video specifications: load resistor (R ) = 150 L V 11 14 DV EE CC Differential gain error: 0.05% AD8188/AD8189 IN0B 12 13 V CC Differential phase error: 0.05 Figure 1. Low glitch All hostile crosstalk 84 dB 5 MHz 52 dB 100 MHz High off isolation: 95 dB 5 MHz Low cost Fast, high impedance disable feature for connecting multiple outputs Logic-shifted outputs APPLICATIONS Switching RGB in LCD and plasma displays RGB video switchers and routers GENERAL DESCRIPTION 4.0 6.0 The AD8188 (G = 1) and AD8189 (G = 2) are high speed, 3.5 5.5 single-supply, triple 2-to-1 multiplexers. They offer 3 dB small signal bandwidth of 350 MHz and 3 dB large signal bandwidth 3.0 5.0 of 300 MHz, along with a slew rate in excess of 1000 V/s. With 2.5 4.5 INPUT 84 dB of all hostile crosstalk and 95 dB off isolation, the parts 2.0 4.0 are well suited for many high speed applications. The 1.5 3.5 differential gain and differential phase error of 0.05% and 0.05 1.0 3.0 respectively, along with 0.1 dB flatness to 70 MHz, make the 0.5 2.5 AD8188 and AD8189 ideal for professional and component OUTPUT video multiplexing. The parts offer 4 ns switching time, making 0 2.0 them an excellent choice for switching video signals, while 0.5 1.5 consuming less than 20 mA on a single 5 V supply (100 mW). 1.0 1.0 Both devices have a high speed disable feature that sets the 0 5 10 15 20 25 TIME (ns) outputs into a high impedance state. This allows the building of Figure 2. AD8189 Video Amplitude Pulse Response, larger input arrays while minimizing off-channel output V = 1.4 V p-p, R = 150 OUT L loading. The devices are offered in a 24-lead TSSOP. 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 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. rights of third parties that may result from its use. Specifications subject to change without notice. No Tel: 781.329.4700 www.analog.com license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Fax: 781.461.3113 2006 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. INPUT VOLTAGE (V) 06239-001 OUTPUT VOLTAGE (V) 06239-002AD8188/AD8189 TABLE OF CONTENTS Features .............................................................................................. 1 Full Power Bandwidth vs. 3 dB Large Signal Bandwidth ... 14 Applications....................................................................................... 1 Single-Supply Considerations................................................... 14 Functional Block Diagram .............................................................. 1 AC-Coupled Inputs.................................................................... 16 General Description ......................................................................... 1 Tolerance to Capacitive Load.................................................... 16 Revision History ............................................................................... 2 Secondary Supplies and Supply Bypassing ............................. 16 Specifications..................................................................................... 3 Split-Supply Operation .............................................................. 16 Absolute Maximum Ratings............................................................ 5 Applications..................................................................................... 17 Thermal Resistance ...................................................................... 5 Single-Supply Operation ........................................................... 17 Maximum Power Dissipation ..................................................... 5 AC-Coupling............................................................................... 17 ESD Caution.................................................................................. 5 DC Restore .................................................................................. 19 Pin Configuration and Function Descriptions............................. 6 High Speed Design Considerations ......................................... 20 Typical Performance Characteristics ............................................. 7 Evaluation Board ............................................................................ 21 Theory of Operation ...................................................................... 14 Schematics................................................................................... 23 High Impedance Disable ........................................................... 14 Outline Dimensions....................................................................... 24 Off Isolation ................................................................................ 14 Ordering Guide .......................................................................... 24 REVISION HISTORY 10/06Revision 0: Initial Version Rev. 0 Page 2 of 24