Datasheet MAX442 (Analog Devices) - 2

19-0016; Rev 1; 1/95
140MHz, 2-Channel Video Multiplexer/Amplifier MAX442 _______________General Description ____________________________Features
The MAX442 combines a 140MHz video amplifier with a ♦
140MHz Unity-Gain Bandwidth
high-speed, 2-channel multiplexer in an 8-pin package. With its 36ns switching time and low differential gain ♦
250V/µs Slew Rate
(0.07%) and phase (0.09°) errors, it is ideal for broad- ♦
0.07%/0.09° Differential Gain/Phase Error
cast-quality video applications. The device is designed to drive both 50Ω and 75Ω cables, and can directly ♦
36ns Channel Switch Time
drive a 75Ω load to ±3V. ♦
No External Compensation Components
The MAX442 video amplifier is compensated for unity- ♦
8-Pin DIP and SO Packages
gain stability, and features a 140MHz bandwidth and a 250V/µs slew rate. The multiplexer’s low input capaci- ♦
Directly Drives 50
Ω
and 75
Ω
Cables
tance (4pF with the channel on or off) maximizes high- speed performance, and a ground pin separating the two input channels minimizes crosstalk and simplifies board layout.
______________Ordering Information
The MAX442 operates from ±5V supplies and typically consumes 300mW. For applications that require more
PART TEMP. RANGE PIN-PACKAGE
input channels, see the data sheets for the MAX440 8- MAX442CPA 0°C to +70°C 8 Plastic DIP channel mux/amp and the MAX441 4-channel mux/amp. MAX442CSA 0°C to +70°C 8 SO MAX442C/D 0°C to +70°C Dice*
________________________Applications
MAX442EPA -40°C to +85°C 8 Plastic DIP MAX442ESA -40°C to +85°C 8 SO Broadcast-Quality Video-Signal Multiplexing *Dice are specified at TA = +25°C, DC parameters only. Coaxial-Cable Drivers Video Editing Video Security Systems Medical Imaging
__________Typical Operating Circuit
High-Speed Signal Processing +5V
__________________Pin Configuration
0.1µF V+ TOP VIEW MAX442 75Ω VIDEO 75Ω CABLE V OUTPUT OUT IN0 VIDEO SIGNALS IN0 1 8 A0 270Ω 75Ω IN IN1 GND 2 7 V+ IN- MAX442 A0 3 6 IN1 VOUT 270Ω 4 5 V- IN- GND V- 0.1µF
DIP/SO
CHANNEL -5V SELECT
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