PGA300 Series
PGA300 Signal Conditioner and Transmitter for Pressure Sensors
Manufacturer: Texas Instruments
Catalog
PGA300 Signal Conditioner and Transmitter for Pressure Sensors
Key Features
• Analog features:Analog front-end for resistive bridge sensorsAccommodates sensor sensitivities from 1mV/V to 135mV/VOn-chip temperature sensorProgrammable gain16-bit sigma-delta analog-to-digital converter for signal channel16-bit sigma-delta analog-to-digital converter for temperature channel14-bit output DACDigital features:<0.1% FSO accuracy across temperatureSystem response time: <220µsThird-order temperature and nonlinearity compensationDiagnostic functionsIntegrated EEPROM for device operation, calibration data, and user dataPeripheral features:One-wire interface enables communication through the power-supply pinCurrent-loop output: 4mA to 20mARatiometric and absolute voltage outputPower supply:On-chip power management accepts wide power-supply voltage from 3.3V to 30VIntegrated reverse voltage protection circuitIndustrial temperature range: –40°C to +150°CAnalog features:Analog front-end for resistive bridge sensorsAccommodates sensor sensitivities from 1mV/V to 135mV/VOn-chip temperature sensorProgrammable gain16-bit sigma-delta analog-to-digital converter for signal channel16-bit sigma-delta analog-to-digital converter for temperature channel14-bit output DACDigital features:<0.1% FSO accuracy across temperatureSystem response time: <220µsThird-order temperature and nonlinearity compensationDiagnostic functionsIntegrated EEPROM for device operation, calibration data, and user dataPeripheral features:One-wire interface enables communication through the power-supply pinCurrent-loop output: 4mA to 20mARatiometric and absolute voltage outputPower supply:On-chip power management accepts wide power-supply voltage from 3.3V to 30VIntegrated reverse voltage protection circuitIndustrial temperature range: –40°C to +150°C
Description
AI
The PGA300 provides an interface for piezoresistive and strain-gauge pressure-sense elements. The device is a full system-on-chip (SoC) solution that incorporates a programmable analog front-end (AFE), ADC, and digital signal processing that enable direct connection to the sense element. Further, the PGA300 includes integrated voltage regulators and an oscillator, thus minimizing the number of external components. The device achieves high accuracy by employing third-order temperature and nonlinearity compensation. External communication is achieved by using a one-wire serial interface (OWI) through the power-supply pin to simplify the system calibration process. An Integrated DAC supports absolute-voltage, ratiometric-voltage, and 4mA to 20mA current-loop outputs.
The PGA300 provides an interface for piezoresistive and strain-gauge pressure-sense elements. The device is a full system-on-chip (SoC) solution that incorporates a programmable analog front-end (AFE), ADC, and digital signal processing that enable direct connection to the sense element. Further, the PGA300 includes integrated voltage regulators and an oscillator, thus minimizing the number of external components. The device achieves high accuracy by employing third-order temperature and nonlinearity compensation. External communication is achieved by using a one-wire serial interface (OWI) through the power-supply pin to simplify the system calibration process. An Integrated DAC supports absolute-voltage, ratiometric-voltage, and 4mA to 20mA current-loop outputs.
