Analog Devices Inc. MAX49925EVKIT Evaluation Kit

Analog Devices Inc. MAX49925EVKIT Evaluation Kit is a fully tested and assembled circuit that demonstrates the capabilities of the MAX49925. The MAX49925 is a high-precision, high-voltage, bidirectional current sense amplifier for PWM applications, such as servo motor control and solenoid drive. The MAX49925 is ideal for 48V, or less BLDC, induction motor applications (such as robotics), pick-and-place machines, 3D prints, or other servo motor control systems. The MAX49925 has an extended protective immunity from -42V to +80V, protecting from a reverse battery and high voltage spikes. This feature also can reduce the BOM complexity at the system level since a smaller TVS might be required. The Analog Devices Inc. MAX49925EVKIT is available in a 2” x 2” PCB and operates over the automotive temperature range of -40°C to +125°C. The evaluation kit demonstrates the MAX49925 in a 10-pin TDFN package with four gain options of 10V/V, 20V/V, 50V/V, and 100V/V, combining the Gain1 and Gain2 pins.

Features

  • Selectable gain options available are 10V/V, 20V/V, 50V/V, and 100V/V
  • 5μV (typ.) input offset voltage
  • ±0.3% (max.) gain error (Thin Film ~0.25%)
  • -0.3V to +65V input common-mode range
  • -40°C to +125°C temperature range
  • 3mm x 3mm 10-pin TDFN with side wettable flanks
  • Proven 2″ x 2″ 2-layer 2oz. copper PCB layout
  • Demonstrates compact solution size
  • Fully assembled and tested

Required Equipment

  • MAX49925EVKIT evaluation kit
  • 0 to 100V, 0.4A DC power supply for VCM input
  • +3.3V, 100mA device DC power supply
  • Electronic load capable of sinking 3A (HP6060B)
  • One Agilent® 34401A 61/2 digital multimeter (DMM)
  • One 3458 81/2 digital multimeter (DMM)

Board Layout

Mechanical Drawing - Analog Devices Inc. MAX49925EVKIT Evaluation Kit

Analog Devices Inc. MAX49925EVKIT Evaluation Kit