Support software
Data sheet
PGA308
- 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.
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Technical documentation
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View all 14 | Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | Single-Supply, Auto-Zero Sensor Amplifier with Programmable Gain and Offset datasheet (Rev. B) | 22 Dec 2010 | |
| Functional safety information | PGA308 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA | PDF | HTML | 20 Jun 2024 | |
| Application brief | Multichannel Analog Input Modules for PLC Equipment | 04 Jan 2019 | ||
| EVM User's guide | PGA308EVM User's Guide (Rev. A) | 22 Sep 2016 | ||
| EVM User's 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 (...)
User guide: PDF
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 (...)
User guide: PDF
Support software
SBOC257 — PGA308EVM Software
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 (...)
User guide: PDF
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| VSON (DRK) | 10 | Ultra Librarian |
| VSSOP (DGS) | 10 | Ultra Librarian |
Ordering & quality
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Support & training
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