1FEATURES

2• UNITY-GAIN BANDWIDTH: 400MHz

• GAIN-BANDWIDTH PRODUCT: 200MHz

• LOW INPUT VOLTAGE NOISE: 2.6nV/√Hz

• VERY LOW DISTORTION: –93dBc (5MHz)

• HIGH OPEN-LOOP GAIN: 110dB

• FAST 12-BIT SETTLING: 22ns (0.01%)

• LOW DC VOLTAGE OFFSET: 300mV Typical

• PROFESSIONAL LEVEL DIFF GAIN/PHASE

ERROR: 0.003%/0.008°

APPLICATIONS

• ADC/DAC BUFFER DRIVER

• LOW DISTORTION IF AMPLIFIER

• ACTIVE FILTER CONFIGURATION

• LOW-NOISE DIFFERENTIAL RECEIVER

• HIGH-RESOLUTION IMAGING

• TEST INSTRUMENTATION

• PROFESSIONAL AUDIO

• OPA642 UPGRADE

DESCRIPTION

The OPA842 provides a level of speed and dynamic

range previously unattainable in a monolithic op amp.

Using unity-gain stable, voltage-feedback architecture

with two internal gain stages, the OPA842 achieves

exceptionally low harmonic distortion over a wide

frequency range. The classic differential input

provides all the familiar benefits of precision op amps,

such as bias current cancellation and very low

inverting current noise compared with wideband

current differential gain/phase performance,

low-voltage noise, and high output current drive make

the OPA842 ideal for most high dynamic range

applications.

Unity-gain stability makes the OPA842 particularly

suitable for low-gain differential amplifiers,

transimpedance amplifiers, gain of +2 video line

drivers, wideband integrators, and low-distortion analog-to-digital converter (ADC) buffers. Where

higher gain or even lower harmonic distortion is

required, consider the OPA843—a higher-gain

bandwidth and lower-noise version of the OPA842.