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GENERAL DESCRIPTION

The AD8410A1 is a high voltage, high bandwidth current-sense

amplifier. The device features an initial gain of 20 V/V, with a 2.2

MHz bandwidth with a maximum ±0.13 gain error over the entire

temperature range. The buffered output voltage directly interfaces

with any typical converter. The AD8410A has a minimum DC

common-mode rejection ratio (CMRR) of 123 dB from ?2 V to

+70 V. The AD8410A performs bidirectional current measurements

across a shunt resistor in a variety of industrial and automotive

applications.

The AD8410A offers breakthrough performance throughout the

?40°C to +125°C temperature range. The device features an

in-package trim core, which leads to a typical offset drift of

±0.21 μV/°C (based on Box Method, see Figure 53) throughout the

operating temperature range and the common-mode voltage range

without the need for chopping and autozero clocks (which could

lead to intermodulation in the application). The device includes

circuitry to achieve a wide input common-mode range and balanced

input bias currents, regardless of input differential voltage or common-

mode voltage, and circuitry to achieve ultra-low CMRR drift.

The device also includes circuitry to enable output accuracy in

the presence of pulse-width modulation (PWM) type input commonmode

voltages. The AD8410A is offered in 8-lead, SOIC_N.

FEATURES

? 2.2 MHz small signal, ?3 dB bandwidth

? In-package Trim Core (DigiTrim?)

? Precision without chopping and/or autozero

? Typical ±0.21 μV/°C offset drift

? Maximum ±200 μV voltage-offset over temperature range

? Typical DC CMRR: 142 dB

? Typical AC CMRR at 50 kHz: 96 dB

? Wide common-mode input voltage range

? ?2 V to +70 V, continuous operation

? ?20 V to +85 V, continuous survival

? Initial gain: 20 V/V

? Wide operating temperature range: ?40°C to +125°C

? Bidirectional operation

? 2.9 V to 5.5 V power-supply operating range

? Available in 8-lead, SOIC_N package

? AEC-Q100 Automotive Qualified

APPLICATIONS

? In-phase or High-side current sensing in

? Motor control in BLDC motors, Low-inductance motors

? Bidirectional 48 V to 12 V DC-DC converters

? Solenoid controls

? Power rail monitoring

? Low-side current sensing