AD8417-2 Datasheet | Analog Devices

FEATURES FUNCTIONAL BLOCK DIAGRAM - Typical 0.1 µV/°C offset drift - Maximum ±400 µV voltage offset over full temperature range - 2.7 V to 5.5 V power supply operating range - Electromagnetic interference (EMI) filters included - High mon-mode input voltage range - - 2 V to +42 V continuous - Initial gain = 60 V/V - Wide operating temperature range: - 40°C to +125°C - Bidirectional operation - Dual channel in a small 1 mm × 1.9 mm WLCSP - mon-mode rejection ratio (CMRR): 86 d B, dc to 10 k Hz APPLICATIONS - High-side current sensing in: - Motor controls - Solenoid controls - Power management - Low-side current sensing - Diagnostic protection TYPICAL APPLICATION CIRCUIT Figure 2. Functional Block Diagram GENERAL DESCRIPTION The AD8417-2 is a high voltage, high resolution, and dual channel current sense amplifier. It features an initial gain of 60 V/V, with a maximum ±0.3% gain error over the entire temperature range. The AD8417-2 performs bidirectional current measurements across a shunt resistor in a variety of applications, including motor control, power management, and solenoid control. Figure 1. 3-Phase Motor Control The AD8417-2 offers breakthrough performance throughout the - 40°C to +125°C temperature range. It features a zero drift core, which leads to a typical offset drift of 0.1 µV/°C throughout the operating temperature range and the mon-mode voltage range. The device includes EMI filters and patented circuitry to enable output accuracy with pulse-width modulation (PWM) type input mon-mode voltages. The typical input offset voltage is ±200 µV. The AD8417-2 is offered in a small 10-ball 1 mm × 1.9 mm WLCSP. It requires a smaller board area than a typical single-channel current sense amplifier, increasing channel density, without promising performance. Table 1. Related Devices Part No. Description AD8205 AD8206 AD8207 AD8210 AD8417 AD8418A Current sense amplifier, gain = 50 Current sense amplifier, gain = 20 High accuracy current-sense amplifier, gain...