The MSR Amplifier is designed for magnetic strip card read system, it can receive signals from a magnetic head, amplify them, and then compare them to CMOS digital output. The MSR amplifier consists of three channels which can deal with two kinds of magnetic channels, channel 2 and 0 are suitable for high data density card (0.63~22KHz), while channel 1 operates in low data density (0.225~5.7KHz). The input signal magnitude varies from 3mV to 80mV, so it requires offset cancellation technique to reduce offset down to a detectable level.

Process: SMIC 0.18um 1P6M Mixed Signal CMOS process  
Supply voltage: 3.3V/1.8V +/-10%  
Current: 2.82mA (tt) / 2.78mA (ss) / 2.89mA (ff)  
Differential Input Signal: 3mV~ 80mV(peak to peak)  
Input Signal Frequency: 0.225 ~5.7KHz/ 0.63~ 22KHz  
Input Offset cancellation: < 3mV  
Input Offset cancellation Clock Frequency: 100 Hz  
Operating temperature: - 40c ~ +25c ~ +85c