PGA305 Signal Conditioner and Transmitter for Pressure Sensors

1 Features

Analog features:
- Analog front-end for resistive bridge sensors
- Accommodates sensor sensitivities from 1mV/V to 135mV/V
- On-chip temperature sensor
- Programmable gain
- 24-bit sigma-delta analog-to-digital converter for signal channel
- 24-bit sigma-delta analog-to-digital converter for temperature channel
- 14-bit output DAC
Digital features:
- FSO accuracy across temperature: < 0.1%
- System response time: < 220µs
- Third-order offset, gain, and nonlinearity temperature compensation
- Diagnostic functions
- Integrated EEPROM for device operation, calibration data and user data
Peripheral features:
- I²C interface for data reading and device configuration
- One-wire interface enables communication through the power supply pin without using additional lines
- Current loop interface: 4mA to 20mA
- Ratiometric and absolute voltage output
- Power management control
- Analog low-voltage detect
General features:
- Industrial temperature range: –40°C to 150°C
- Power supply:
  - On-chip power management accepts wide power-supply voltage from 3.3V to 30V
  - Integrated reverse-protection circuit