Product details

PGA/VGA PGA Number of channels (#) 2 Vs (Max) (V) 5.5 Vs (Min) (V) 2.7 Slew rate (Typ) (V/us) 0.6 Operating temperature range (C) -40 to 125
PGA/VGA PGA Number of channels (#) 2 Vs (Max) (V) 5.5 Vs (Min) (V) 2.7 Slew rate (Typ) (V/us) 0.6 Operating temperature range (C) -40 to 125
VSON (DRK) 10 12 mm² 4 x 3 VSSOP (DGS) 10 9 mm² 3 x 3 VSSOP (DGS) 10
  • 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
  • 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

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 pin. Gain and offset calibration parameters are stored onboard in seven banks of one-time programmable (OTP) memory. The power-on reset (POR) OTP bank may be programmed a total of four times.

The all-analog signal path contains a 2×2 input multiplexer (mux) to allow electronic sensor lead swapping, a coarse offset adjust, an auto-zero programmable gain instrumentation amplifier (PGA), a fine gain adjust, a fine offset adjust, and a programmable gain output amplifier. Fault monitor circuitry detects and signals sensor burnout, overload, and system fault conditions. Over/under-scale limits provide additional means for system level diagnostics. The dual-use DOUT/VCLAMP pin can be used as a programmable digital output or as a VOUT over-voltage clamp.

For detailed application information, see the PGA308 User's Guide (SBOU069) available for download at www.ti.com.

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 pin. Gain and offset calibration parameters are stored onboard in seven banks of one-time programmable (OTP) memory. The power-on reset (POR) OTP bank may be programmed a total of four times.

The all-analog signal path contains a 2×2 input multiplexer (mux) to allow electronic sensor lead swapping, a coarse offset adjust, an auto-zero programmable gain instrumentation amplifier (PGA), a fine gain adjust, a fine offset adjust, and a programmable gain output amplifier. Fault monitor circuitry detects and signals sensor burnout, overload, and system fault conditions. Over/under-scale limits provide additional means for system level diagnostics. The dual-use DOUT/VCLAMP pin can be used as a programmable digital output or as a VOUT over-voltage clamp.

For detailed application information, see the PGA308 User's Guide (SBOU069) available for download at www.ti.com.

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Technical documentation

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Type Title Date
* Data sheet Single-Supply, Auto-Zero Sensor Amplifier with Programmable Gain and Offset datasheet (Rev. B) 22 Dec 2010
Application note Multichannel Analog Input Modules for PLC Equipment 04 Jan 2019
User guide PGA308EVM User's Guide (Rev. A) 22 Sep 2016
User guide Multi-Cal-System Evaluation Module User's Guide (Rev. B) 15 Sep 2016
User guide PGA308 User's Guide (Rev. B) 27 Jan 2012
User guide Multi-Cal-PGA308 System User Guide 29 Apr 2011
User guide Multi-Cal-Interface User's Guide 09 Sep 2010
User guide Multi-Cal-Slave User's Guide 09 Sep 2010
User guide Multi-Cal-Cable User's Guide 08 Sep 2010
User guide Multi-Cal-Master User's Guide 22 Aug 2010
User guide Multi-Cal-Test Users Guide 22 Aug 2010
User guide tioScript Editor Users Guide 26 Aug 2008
User guide USB DAQ Platform User's Guide 20 Mar 2008

Design & development

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

Evaluation board

MULTI-CAL-SYSTEM — Multi-Cal-System Basic Starter Kit

The Multi-Cal-System is a system of evaluation modules and accessories that can be used to calibrate multiple PGA308 sensor modules. The Multi-Cal-System can be configured to calibrate from 8 to 64 PGA308s simultaneously. The key component of the Multi-Cal-System is the Multi-Cal-System Starter Kit (...)

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Evaluation board

PGA308EVM — PGA308 evaluation module

The PGA308EVM key hardware consists of two boards, PGA308 Test Board and USB DAQ Platform. The PGA308 Test Board contains the PGA308, terminal strips for external connections, several jumpers for device configuration, and support circuitry. The PGA308 Test Board can be used to fully test your design (...)

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GUI for evaluation module (EVM)

PGA308EVM Video Quick-Start User Guide (part 1)

SBFC032.ZIP (82446 KB)
GUI for evaluation module (EVM)

PGA308EVM Video Quick-Start User Guide (part 2)

SBFC033.ZIP (208531 KB)
GUI for evaluation module (EVM)

PGA308EVM Video Quick-Start User Guide (part 3)

SBFC034.ZIP (84790 KB)
GUI for evaluation module (EVM)

PGA308EVM Video Quick-Start User Guide (part 4)

SBFC035.ZIP (60983 KB)
Support software

PGA308EVM Source Code (Rev. B)

SBOC256B.ZIP (15532 KB)
Support software

PGA308EVM Software (Rev. B)

SBOC257B.ZIP (3859 KB)
Support software

Multi-Cal-PGA308 System Software

SBOC390.ZIP (260717 KB)
Support software

Multi-Cal-PGA308 System Source Code

SBOC391.ZIP (7616 KB)
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Simulation tool

TINA-TI — SPICE-based analog simulation program

TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
Schematic

PGA308EVM Schematic

SBOR004.PDF (45 KB)
Schematic

Multi-Cal-Master Schematics

SBOR011.ZIP (585 KB)
Schematic

Multi-Cal-Slave Schematic

SBOR015.PDF (535 KB)
Package Pins Download
VSON (DRK) 10 View options
VSSOP (DGS) 10 View options

Ordering & quality

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  • Ongoing reliability monitoring

Support & training

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