GENERAL DESCRIPTION
The AD8411A1 is a high-voltage, high-bandwidth current-sense
amplifier. The device features an initial gain of 50 V/V, with a 2.7
MHz bandwidth with a maximum ±0.15% gain error over the entire
temperature range. The buffered output voltage directly interfaces
with any typical converter. The AD8411A has a minimum DC common-
mode rejection ratio (CMRR) of 123 dB from −2 V to +70 V.
The AD8411A performs bidirectional current measurements across
a shunt resistor in various industrial and automotive applications.
The AD8411A 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
±0.26 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 auto-zero 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 AD8411A is available in 8-lead, Mini Small Outline Package (MSOP).

FEATURES
► 2.7 MHz small signal, −3 dB bandwidth
► In-package Trim Core (DigiTrim™)
► Precision without chopping and/or auto-zero
► Typical ±0.26 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: 50 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, MSOP package
► AEC-Q100 Automotive Qualified

APPLICATIONS
► In-phase or High-side current sensing in
► BLDC motors, Low-inductance motors
► Bidirectional 48 V to 12 V DC-DC converters
► Solenoid controls
► Power rail monitoring
► Low-side current sensing