General Description
●The MAX9939 is a general-purpose, differential-input programmable-gain amplifier (PGA) that is ideal for conditioning a variety of wide dynamic range signals such as those found in motor current-sense, medical instrumentation, and sonar data acquisition applications. It features SPI™-programmable differential gains from 0.2V/V to 157V/V, input offset-voltage compensation, and an output amplifier that can be configured either as a high-order active filter or to provide a differential output.
●Features
●♦ SPI-Programmable Gains: 0.2V/V to 157V/V
●♦ Extremely Low Gain Tempco
●♦ Integrated Amplifier for R/C Programmable Active Filter
●♦ Input Offset-Voltage Compensation
●♦ Input Protection to ±16V
●♦ 13µA Software Shutdown Mode
●♦ -40°C to +125°C Operating Temperature Range
●♦ 10-Pin µMAX Package
●Applications
● Sensorless Motor Control
● Medical Signal Conditioning
● Sonar and General Purpose Data Acquisition
● Differential to Single-Ended Conversion
● Differential-Input, Differential-Output Signal Amplification
● Sensor Interface and Signal Processing