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.
| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | Single-Supply, Auto-Zero Sensor Amplifier with Programmable Gain and Offset datasheet (Rev. B) | Dec 22, 2010 | |
| Functional safety information | PGA308 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA | PDF | HTML | Jun 20, 2024 | |
| Application brief | Multichannel Analog Input Modules for PLC Equipment | Jan 4, 2019 | ||
| User guide | PGA308 User's Guide (Rev. B) | Jan 27, 2012 | ||
| User guide | Multi-Cal-PGA308 System User Guide | Apr 29, 2011 | ||
| User guide | Multi-Cal-Interface User's Guide | Sep 9, 2010 | ||
| User guide | Multi-Cal-Slave User's Guide | Sep 9, 2010 | ||
| User guide | Multi-Cal-Cable User's Guide | Sep 8, 2010 | ||
| User guide | Multi-Cal-Master User's Guide | Aug 22, 2010 | ||
| User guide | Multi-Cal-Test Users Guide | Aug 22, 2010 | ||
| User guide | tioScript Editor Users Guide | Aug 26, 2008 | ||
| User guide | USB DAQ Platform User's Guide | Mar 20, 2008 |
For additional terms or required resources, click any title below to view the detail page where available.
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 (...)
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 (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| VSON (DRK) | 10 | Ultra Librarian |
| VSSOP (DGS) | 10 | Ultra Librarian |
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