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.
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | Single-Supply, Auto-Zero Sensor Amplifier with Programmable Gain and Offset datasheet (Rev. B) | 2010/12/22 | |||
| 功能安全資訊 | PGA308 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA | PDF | HTML | 2024/6/20 | |||
| Application brief | Multichannel Analog Input Modules for PLC Equipment | 2019/1/4 | ||||
| 使用指南 | PGA308 User's Guide (Rev. B) | 2012/1/27 | ||||
| 使用指南 | Multi-Cal-PGA308 System User Guide | 2011/4/29 | ||||
| 使用指南 | Multi-Cal-Interface User's Guide | 2010/9/9 | ||||
| 使用指南 | Multi-Cal-Slave User's Guide | 2010/9/9 | ||||
| 使用指南 | Multi-Cal-Cable User's Guide | 2010/9/8 | ||||
| 使用指南 | Multi-Cal-Master User's Guide | 2010/8/22 | ||||
| 使用指南 | Multi-Cal-Test Users Guide | 2010/8/22 | ||||
| 使用指南 | tioScript Editor Users Guide | 2008/8/26 | ||||
| 使用指南 | USB DAQ Platform User's Guide | 2008/3/20 |
設計與開發
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MULTI-CAL-SYSTEM — Multi-Cal-System 基礎入門套件
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 (...)
PGA308EVM — PGA308 評估模組
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 (...)
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| VSON (DRK) | 10 | Ultra Librarian |
| VSSOP (DGS) | 10 | Ultra Librarian |