200-MHz Bandwidth
250-kΩ Input Resistance
Selectable Nominal Amplification of 10,
100, or 400
No Frequency Compensation Required

description/ordering information
The μA733 is a monolithic two-stage video amplifier with differential inputs and differential outputs. Internal
series-shunt feedback provides wide bandwidth, low phase distortion, and excellent gain stability.
Emitter-follower outputs enable the device to drive capacitive loads, and all stages are current-source biased
to obtain high common-mode and supply-voltage rejection ratios.
Fixed differential amplification of 10 V/V, 100 V/V, or 400 V/V may be selected without external components,
or amplification may be adjusted from 10 V/V to 400 V/V by the use of a single external resistor connected
between 1A and 1B. No external frequency-compensating components are required for any gain option.
The device is particularly useful in magnetic-tape or disc-file systems using phase or NRZ encoding and in
high-speed thin-film or plated-wire memories. Other applications include general-purpose video and pulse
amplifiers where wide bandwidth, low phase shift, and excellent gain stability are required.
The μA733C is characterized for operation from 0°C to 70°C; the μA733M is characterized for operation over
the full military temperature range of −55°C to 125°C.