Data Sheet

ADHV4702-1

24 V to 220 V Precision Operational Amplifier

Rev. D

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FEATURES

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Wide range of operating voltages

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Dual-supply: ±12 V to ±110 V

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Asymmetrical supply operation: 24 V to 220 V, VCC ≤ 175 V

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Wide input common-mode voltage range: 3 V from rails

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High common-mode rejection ratio: 160 dB typical

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High AOL: 170 dB typical

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High slew rate

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74 V/µs typical

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24 V/µs typical with external input clamping diodes

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Low input bias current: 2 pA maximum

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Low input offset voltage: 1 mV maximum

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Low input offset voltage drift: 2 µV/°C maximum

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Low input voltage noise: 8 nV/√Hz typical at 10 kHz

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Wide small signal bandwidth: 10 MHz typical

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Resistor adjustable quiescent current: 0.6 mA to 3 mA (VS =

±110 V)

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Unity-gain stable

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Thermal monitoring

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Small footprint: 12-lead, 7 mm × 7 mm LFCSP compliant with

IEC 61010-1 spacing

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Shutdown mode

APPLICATIONS

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High-side current sensing

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Automated test equipment

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High voltage drivers

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Piezotransducers

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Digital-to-analog converter (DAC) output buffers

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Light detecting and ranging (LiDAR), avalanche photodiode

(APD), single photon avalanche diode (SPAD) biasing

TYPICAL APPLICATION CIRCUIT

Figure 1.

GENERAL DESCRIPTION

The ADHV4702-1 is a high voltage (220 V), unity-gain stable

precision operational amplifier. The ADHV4702-1 offers high input

impedance with low input bias current, low input offset voltage, low

drift, and low noise for precision demanding applications. The next

generation of proprietary semiconductor processes and innovative

architecture from Analog Devices, Inc., enable this precision opera-

tional amplifier to operate from symmetrical dual supplies of ±110 V,

asymmetrical dual supplies up to 220 V span, or a single supply up

to 175 V.

For precision performance, the ADHV4702-1 has a 170 dB typical

open-loop gain (AOL) and a 160 dB typical common-mode rejection

ratio (CMRR), as shown in Figure 3. The ADHV4702-1 also has a

2 µV/°C maximum input offset voltage (VOS) drift and an 8 nV/√Hz

input voltage noise.

The exceptional dc precision of the ADHV4702-1 is complemented

by excellent dynamic performance with a small signal bandwidth

of 10 MHz and a slew rate of 74 V/µs. The ADHV4702-1 has an

output current of 20 mA typical.

The ADHV4702-1 offers high voltage input common-mode swing as

well as high voltage output swing, enabling precision high voltage

use cases such as high-side current sensing.

The ADHV4702-1 is available in a 12-lead, 7 mm × 7 mm

lead frame chip scale package (LFCSP) with an exposed pad

(EPAD) compliant to international electrotechnical commission

(IEC) 61010-1 creepage and clearance standards. The copper

EPAD provides a low thermal resistance path to improve heat

dissipation and features high voltage isolation, allowing it to be

safely connected to a 0 V ground plane regardless of VCC or VEE

voltages. The ADHV4702-1 operates over the −40°C to +85°C

industrial temperature range.