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