PGA305

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Signal Conditioner for Resistive Sensing With Digital and Analog Outputs

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Product details

Parameters

Operating temperature range (C) -40 to 150 Vs (Min) (V) 3.3 Vs (Max) (V) 30 Resolution (Bits) 24 Rating Catalog open-in-new Find other Signal conditioners

Package | Pins | Size

VQFN (RHH) 36 36 mm² 6 x 6 open-in-new Find other Signal conditioners

Features

  • Analog Features
    • Analog Front-End for Resistive Bridge Sensors
    • Accommodates Sensor Sensitivities From 1 mV/V to 135 mV/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
    • < 0.1% FSO Accuracy Across Temperature
    • System Response Time < 220 µs
    • 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
    • 4-mA to 20-mA Current Loop Interface
    • 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 3.3 V to 30 V
      • Integrated Reverse-Protection Circuit

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Description

The PGA305 device supplies an interface for piezoresistive and strain-gauge pressure-sense elements. The device is a full system-on-chip (SoC) solution that includes programmable analog front end (AFE), ADC, and digital signal processing that enable direct connection to the sense element. The PGA305 device also includes integrated voltage regulators and an oscillator to minimize the number of external components. The PGA305 device can employ third-order temperature and nonlinearity compensation to achieve high accuracy. The device can also use the integrated I2C interface or the one-wire serial interface (OWI) to achieve external communication and simplify the system calibration process. An Integrated DAC supports absolute-voltage, ratiometric-voltage, and 4-mA to 20-mA current-loop outputs.

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Technical documentation

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Type Title Date
* Datasheet PGA305 Signal Conditioner and Transmitter for Pressure Sensors datasheet Aug. 29, 2017
User guides PGAxxxEVM-034 User’s Guide (Rev. B) Aug. 01, 2018
Application notes PGA900, PGA300 and PGA305 Use Case for HVAC Applications May 02, 2017
Application notes PGA900, PGA300 and PGA305 Use Case for the Pressure Transmitter Applications May 02, 2017
Application notes PGA900, PGA300 and PGA305 Use Case for Weight Scale (Load Cell) Applications May 01, 2017
Technical articles SigCon Architect: The keys to your high-speed design Oct. 27, 2015
Technical articles Make signal conditioning easy with WEBENCH® Interface Designer Jan. 27, 2015
Technical articles Get Connected: Equalization Oct. 15, 2014
Technical articles One part for all: Multi-standard signal conditioners Mar. 07, 2014

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARDS Download
document-generic User guide
$199.00
Description
The PGA305 evaluation module (EVM) evaluates all the features of the PGA300 in either voltage mode or current mode. PGA300EVM has a resistive bridge on board with a potentiometer allowing for differential input voltages to be adjusted by the user to emulate a pressure-sense element. The EVM also (...)
Features
  • Current-mode evaluation
  • Voltage-mode evaluation
  • I2C Interface
  • OWI circuitry
  • Includes GUI and Getting Started Guide

Software development

SUPPORT SOFTWARE Download
SLDC018.ZIP (66262 KB)

CAD/CAE symbols

Package Pins Download
VQFN (RHH) 36 View options

Ordering & quality

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