PGA309
- Complete Bridge Sensor Conditioner
- Voltage Output: Ratiometric or Absolute
- Digital Cal: No Potentiometers/Sensor Trims
- Sensor Error Compensation
- Span, Offset, and Temperature Drifts
- Low Error, Time-Stable
- Sensor Linearization Circuitry
- Temperature Sense: Internal or External
- Calibration Lookup Table Logic
- Uses External EEPROM (SOT23-5)
- Over/Under-Scale Limiting
- Sensor Fault Detection
- +2.7V TO +5.5V Operation
- –40°C to +125°C Operation
- Small TSSOP-16 Package
- APPLICATIONS
- Bridge Sensors
- Remote 4-20mA Transmitters
- Strain, Load, and Weigh Scales
- Automotive Sensors
- Hardware Designer’s Kit (PGA309EVM)
- Temperature Eval of PGA309 + Sensor
- Full Programming of PGA309
- Sensor Compensation Analysis Tool
All other trademarks are the property of their respective owners.
The PGA309 is a programmable analog signal conditioner designed for bridge sensors. The analog signal path amplifies the sensor signal and provides digital calibration for zero, span, zero drift, span drift, and sensor linearization errors with applied stress (pressure, strain, etc.). The calibration is done via a One-Wire digital serial interface or through a Two-Wire industry-standard connection. The calibration parameters are stored in external nonvolatile memory (typically SOT23-5) to eliminate manual trimming and achieve long-term stability.
The all-analog signal path contains a 2x2 input multiplexer (mux), auto-zero programmable-gain instrumentation amplifier, linearization circuit, voltage reference, internal oscillator, control logic, and an output amplifier. Programmable level shifting compensates for sensor dc offsets.
The core of the PGA309 is the precision, low-drift, no 1/f noise Front-End PGA (Programmable Gain Amplifier). The overall gain of the Front-End PGA + Output Amplifier can be adjusted from 2.7V/V to 1152V/V. The polarity of the inputs can be switched through the input mux to accommodate sensors with unknown polarity output. The Fault Monitor circuit detects and signals sensor burnout, overload, and system fault conditions.
For detailed application information, see the PGA309 User's Guide (SBOU024) available for download at www.ti.com.
技术文档
| 顶层文档 | 类型 | 标题 | 格式选项 | 下载最新的英语版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 数据表 | Voltage Output Programmable Sensor Conditioner 数据表 (Rev. C) | 2011-1-14 | |||
| 用户指南 | PGA309 电压输出可编程传感器调节器 (Rev. C) | PDF | HTML | 英语版 (Rev.C) | PDF | HTML | 2023-10-13 | |
| 应用简报 | 如何为压力变送器应用选择放大器 (Rev. B) | PDF | HTML | 英语版 (Rev.B) | PDF | HTML | 2023-2-27 | |
| 应用简报 | 适用于 PLC 设备的多通道模拟输入模块 | 英语版 | 2019-4-4 | |||
| 模拟设计期刊 | Ratiometric measurement in the context of LVDT-sensor signal conditioning | 2016-7-21 | ||||
| 模拟设计期刊 | 电阻温度检测器的模拟线性化 | 英语版 | 2012-1-13 | |||
| 模拟设计期刊 | 2011 年第 4 期模拟应用学报 | 2011-11-9 | ||||
| EVM 用户指南 | Multi-Cal-PGA309 System User Guide | 2011-4-27 | ||||
| 用户指南 | Multi-Cal-Master User's Guide | 2010-8-22 | ||||
| 用户指南 | Multi-Cal-Test Users Guide | 2010-8-22 | ||||
| 应用手册 | Using the XTR115 with the PGA309 to Generate 4mA to 20mA Output (Rev. B) | 2006-4-20 | ||||
| 应用手册 | PGA309 Quick Start System Reference Guide (Rev. C) | 2006-1-13 | ||||
| 应用手册 | PGA309 Noise Filtering (Rev. A) | 2005-11-28 | ||||
| 应用手册 | Practical Technique for Minimizing the Number of Measurements in Sensor Signal | 2005-6-28 | ||||
| 应用手册 | PGA309 Microcontroller Application | 2005-6-7 | ||||
| 用户指南 | Using PGA309 for Sensor Compensation | 2004-3-11 |
设计与开发
如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。
MULTI-CAL-SYSTEM — Multi-Cal-System 基础入门套件
Multi-Cal-System 是 EVM 和配件系统，可用于校准多个 PGA308 传感器模块。Multi-Cal-System 可配置为同时校准 8 至 64 个 PGA308。Multi-Cal-System 的关键组件是 Multi-Cal-System 入门套件。此套件包含：
- (1) Multi-Cal-Master 板
- (2) Multi-Cal-Test 板
- (1) Multi-Cal-Interface 板
- (2) Multi-Cal-Interface 电缆
- (1) Multi-Cal-Power 电缆
其他所有必需组件：USB-DAQ 平台、软件光盘、壁挂电源、USB (...)
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PGA309EVM-USB 主要硬件由 2 块电路板、PGA309 测试板和 USB DAQ 平台组成。PGA309 测试板包含 PGA309、用于外部连接的端子台、用于器件配置的多个跳线设置以及支持电路。PGA309 测试板可在您进行原型设计前对您的设计进行全面测试。USB DAQ 平台包含一个具有内置 USB 接口的 8052 微处理器。此微处理器生成与 PGA309 进行通信所需的 1 线信号。USB DAQ 平台还包含 3V/5V 可编程线性稳压器、电源控制开关、通用数字 I/O、DAC 输出和 A/D 输入。该软件是基于 windows 的图形软件，它允许用户与 PGA309 (...)
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The SensorEmulatorEVM provides a complete system for strain and temperature emulation of voltage-excited bridge sensors. The SensorEmulatorEVM uses rotary selector switches and potentiometers to emulate the operation of a voltage-excited Wheatstone resistive bridge sensor at discrete operating (...)
TIPD126 — Bridge sensor signal conditioner with current loop output and EMC protection reference design
这款电桥传感器调节器模块可为接地基准负载提供经过良好调节的电流输出。第一级使用混合信号可编程增益放大器 (PGA) 为差动电桥传感器电压提供线性化和温度补偿。第二级将 PGA 输出电压转换为电流，然后通过标准 4mA 到 20mA 电流环路传输电流。额外的电路可防止模块出现静电放电 (ESD)、电气快速瞬变 (EFT)、辐射和传导电磁干扰 (EMI) 以及雷击电涌。
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| TSSOP (PW) | 16 | Ultra Librarian |