MAX442 Datasheet, PDF (1/8 Pages) Maxim Integrated Products – 140MHz, 2-Channel Video Multiplexer/Amplifier

19-0016; Rev 1; 1/95
140MHz, 2-Channel
Video Multiplexer/Amplifier
_______________General Description
The MAX442 combines a 140MHz video amplifier with a
high-speed, 2-channel multiplexer in an 8-pin package.
With its 36ns switching time and low differential gain
(0.07%) and phase (0.09°) errors, it is ideal for broad-
cast-quality video applications. The device is designed
to drive both 50Ω and 75Ω cables, and can directly
drive a 75Ω load to ±3V.
The MAX442 video amplifier is compensated for unity-
gain stability, and features a 140MHz bandwidth and a
250V/µs slew rate. The multiplexer’s low input capaci-
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.
The MAX442 operates from ±5V supplies and typically
consumes 300mW. For applications that require more
input channels, see the data sheets for the MAX440 8-
channel mux/amp and the MAX441 4-channel mux/amp.
________________________Applications
Broadcast-Quality Video-Signal Multiplexing
Coaxial-Cable Drivers
Video Editing
Video Security Systems
Medical Imaging
High-Speed Signal Processing
____________________________Features
o 140MHz Unity-Gain Bandwidth
o 250V/µs Slew Rate
o 0.07%/0.09° Differential Gain/Phase Error
o 36ns Channel Switch Time
o No External Compensation Components
o 8-Pin DIP and SO Packages
o Directly Drives 50Ω and 75Ω Cables
______________Ordering Information
PART
TEMP. RANGE PIN-PACKAGE
MAX442CPA
0°C to +70°C
8 Plastic DIP
MAX442CSA
0°C to +70°C
8 SO
MAX442C/D
0°C to +70°C
Dice*
MAX442EPA
-40°C to +85°C
8 Plastic DIP
MAX442ESA
-40°C to +85°C
8 SO
*Dice are specified at TA = +25°C, DC parameters only.
__________Typical Operating Circuit
+5V
__________________Pin Configuration
TOP VIEW
IN0 1
GND 2
IN1 ³
V- ⁴
MAX442
DIP/SO
8 _A0
7 V+
6 V_OUT
5 _IN-
0.1µF
V+
MAX442
VOUT
IN0
VIDEO
SIGNALS
IN
IN1
IN-
A0
GND V-
0.1µF
75Ω
75Ω
CABLE
VIDEO
OUTPUT
270Ω
75Ω
270Ω
CHANNEL
-5V
SELECT
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