Description

The CXA3271GE is an electrostatic capacitance method fingerprint sensor.

This monolithic IC integrates the sensor block, sense amplifier (3-bit gain adjustment), sample-and-hold, output amplifier and output buffer needed to acquire fingerprint images, as well as the timing generator for determining the operation of these functions onto a single chip.

Features

• Electrostatic capacitance type sensor (charge transfer method)

• Number of pixels: 192 × 128

• 317 DPI

• Low power consumption (50mW or less)

• Single 3.3V power supply

• Sensor gain control: 3 bits

• S/N ratio improved by on-chip sensor block parasitic capacitance cancel function

Applications

Fingerprint verification units