ADA4870: High Speed, High Voltage, 1A Output Drive Amplifier0 pages

►

ANALOG

DEVICES

High Speed, High Voltage,

1A Output Drive Amplifier

Preliminary Technical Data

ADA4870

FEATURES

Ideal for driving high capacitive or heavy resistive loads

Wide supply range: 10 V to 40 V

High output current drive: 1A

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

Large signal -3 dB BW: 45 MHz (VOUT = 20 V p-p, 300 pF load)

High slew rate: 2500 V/us (peak)

Low Noise: 3 nV/VHz

Supply current: 34 mA

Power down (800 uA)

Short-circuit current protection

Current limit: 1.2 A

Thermal overload protection & flag

APPLICATIONS

BTS Envelope Tracking

Power FET driver

Ultrasound

Piezo Driver

Waveform Generation

ATE

CCD Panel Driver

GENERAL DESCRIPTION

The ADA4870 is a unity gain stable, high-speed current

feedback amplifier capable of delivering 1A of continuous

output current from a 40V supply. Manufactured on ADI's

proprietary high voltage XFCB process, the innovative

architecture of the ADA4870 enables high performance signal

processing solutions in a variety of demanding applications.

The ADA4870 is ideal for driving the gate of high voltage Power

FETs, Piezo transducers, PIN diodes, CCD imagers and a

variety of other demanding applications that require wide

dynamic range from high supply voltage and high current

CONNECTION DIAGRAM

Figure 1.20-Lead PSOP3

output.

The ADA4870 is available in a Power SOIC package (PSOP_3),

featuring an exposed thermal slug that provides high thermal

conductivity to the PCB then heat sink enabling efficient heat

transfer for improved reliability in demanding environments .

The ADA4870 operates over the industrial temperature range

(-40°C to +85°C) at maximum performance when appropriate

thermal management techniques are applied.

Rev. PrA

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other

rights of third parties that may result from its use. Spedfications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarks and registered trademarks are the property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700 ©2014 Analog Devices, Inc. All rights reserved.