CXA3271GE Overview
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.
CXA3271GE Key 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