PGA308 - Texas Instruments

PGA308 Auto-Zero Sensor Amplifier

The PGA308 is a programmable analog sensor signal conditioner. The analog signal path amplifies the sensor signal and provides digital calibration for offset and gain. Calibration is done via the 1W pin, a digital One-Wire, UART-compatible interface. For three-terminal sensor modules, 1W may be connected to VOUT and the assembly programmed through the VOUT p.

Features

1
•2 Digital Calibration for Bridge Sensors
• Offset Select: Coarse and Fine
• Gain Select: Coarse and Fine
• Bridge Fault Monitor
• Input Mux for Lead Swap
• Over/Under Scale Limits
• DOUT/ VOUT Clamp Function
• Seven Banks OTP Memory
• One-Wire Digital UART Interface
• Operating Voltage: +2.7V to +5.5V
• Temperature Range:
  –40°C to +125°C
• MSOP-10 and 3mm × 4mm DFN-10 Packages APPLICATIONS
• Bridge Sensors
• Remote 4-20mA Transmitters
• Strain, Load, Weigh Scales
• Automotive Sensors EVALUATION TOOLS
• PGA308EVM (Hardware and Software)
  – Calibration and Configuration
  – Sensor Emulation DES.