GENERAL DESCRIPTION

The ADA4870 is a unity gain stable, high speed current feedback amplifier capable of delivering 1 A of output current and 2500 V/μs slew rate from a 40 V supply. Manufactured using the Analog Devices, Inc., proprietary high voltage extra fast complementary bipolar (XFCB) process, the innovative architecture of the ADA4870 enables high output power, high speed signal processing solutions in applications that require driving a low impedance load.

The ADA4870 is ideal for driving high voltage power FETs, piezo transducers, PIN diodes, CCD panels, and a variety of other demanding applications that require high speed from high supply voltage at high output current.

The ADA4870 is available in a power SOIC package (PSOP_3), featuring an exposed thermal slug that provides high thermal conductivity, enabling efficient heat transfer for improved perfor mance and reliability in demanding applications. The ADA4870 operates over the industrial temperature range (−40°C to +85°C).

FEATURES

Ideal for driving high capacitive or low resistive loads

Wide supply range: 10 V to 40 V

High output current drive: 1 A

Wide output voltage swing: 37 V swing with 40 V supply

High slew rate: 2500 V/µs

High bandwidth: 52 MHz large signal, 70 MHz small signal

Low noise: 2.1 nV/√Hz

Quiescent current: 32.5 mA

Power down: 0.75 mA

Short-circuit protection and flag

Current limit: 1.2 A

Thermal protection

APPLICATIONS

Envelope tracking

Power FET driver

Ultrasound

Piezo drivers

PIN diode drivers

Waveform generation

Automated test equipment (ATE)

CCD panel drivers

Composite amplifiers