返回页首

产品详细信息

参数

Features PGA Operating temperature range (C) -40 to 105 Vs (Min) (V) 2.7 Vs (Max) (V) 5.5 Interface type Serial SPI Rating Catalog open-in-new 查找其它 信号调节器

封装|引脚|尺寸

VSSOP (DGS) 10 9 mm² 3 x 3 open-in-new 查找其它 信号调节器

特性

  • Programmable Gain Amplifier
  • Dark Signal Offset Cancellation
  • Supports External Filtering
  • Common-Mode Generator and 8-Bit DAC
  • Key Specifications
    • Programmable Gain 167 to 7986 V/V
    • Low Noise (0.1 to 10 Hz) 0.1 µVRMS
    • Gain Drift 100 ppm/°C (Maximum)
    • Phase Delay Drift 500 ns (Maximum)
    • Power Supply Voltage Range 2.7 to 5.5 V
open-in-new 查找其它 信号调节器

描述

The LMP91050 device is a programmable integrated Sensor Analog Front End (AFE) optimized for thermopile sensors, as typically used in NDIR applications. It provides a complete signal path solution between a sensor and microcontroller that generates an output voltage proportional to the thermopile voltage. The programmability of the LMP91050 enables it to support multiple thermopile sensors with a single design as opposed to the multiple discrete solutions.

The LMP91050 features a programmable gain amplifier (PGA), dark phase offset cancellation, and an adjustable common-mode generator (1.15 V or 2.59 V) which increases output dynamic range. The PGA offers a low-gain range of 167 V/V to 1335 V/V plus a high-gain range of 1002 V/V to 7986 V/V which enables the user to use thermopiles with different sensitivities. The PGA is highlighted by low-gain drift (100 ppm/°C), output offset drift (1.2 mV/°C at G = 1002 V/V), phase delay drift (500 ns) and noise specifications (0.1 µVRMS 0.1 to 10Hz).

The offset cancellation circuitry compensates for the by adding an equal and opposite offset to the input of the second stage, thus removing the original offset from the output signal. This offset cancellation circuitry allows optimized usage of the ADC full scale and relaxes ADC resolution requirements.

The LMP91050 allows extra signal filtering (high-pass, lowpass or bandpass) through dedicated pins A0 and A1, in order to remove out of band noise. The user can program through the on board SPI interface. Available in a small form factor 10-pin package, the LMP91050 operates from –40 to 105°C.

open-in-new 查找其它 信号调节器
下载

技术文档

star = TI 精选相关文档
未找到结果。请清除搜索,并重试。
查看所有 7
类型 标题 下载最新的英文版本 日期
* 数据表 LMP91050 Configurable AFE for Nondispersive Infrared (NDIR) Sensing Applications 数据表 (Rev. E) 2015年 9月 30日
用户指南 SPIO-4 Precision Signal-Path Controller Board User Guide (Rev. A) 2018年 5月 5日
技术文章 Get Connected: A new blog series 2014年 1月 10日
应用手册 LMP91051 CO2 Gas Detection System 2013年 5月 9日
应用手册 AN-2260 MSP430 Interface to LMP91050 Code Library (Rev. A) 2013年 5月 1日
更多文献资料 传感器模拟前端手册 2012年 10月 30日
用户指南 LMP91050 Evaluation Board with Sensor AFE Software User’s Guide 2012年 3月 22日

设计与开发

有关其他条款或所需资源,请点击下面的任何链接来查看详情页面。

硬件开发

评估板 下载
document-generic 用户指南
75
说明

The LMP91050 evaluation board (LMP91050SDEVAL) can be used as stand-alone or as part of Sensor AFE eval platform (refer to the Sensor AFE platform page for software and required hardware). It the LMP91050 can be configured via the SPI interface and allows for testing the device with thermopile (...)

特性

Contents:

  • Assembled LMP91050 Evaluation Board
  • LMP91050 Evaluation Board User guide
评估板 下载
document-generic 用户指南
149
说明

The SPIO-4 Digital Controller board is used to read registers, write registers, and capture data from various TI's Sensor AFE and other signal path products. The device evaluation board (for example: LMP90100EB) should be equipped with the GPSI-16 or GPSI-32 header to connect to the SPIO-4 board (...)

软件开发

驱动程序或库 下载
SNAC047.ZIP (63 KB)
支持软件 下载
SNAC004.ZIP (35539 KB)

设计工具和仿真

仿真模型 下载
SNAM032.ZIP (4 KB) - Macromodels
仿真模型 下载
SNAM033.ZIP (4 KB) - PSpice Model

CAD/CAE 符号

封装 引脚 下载
VSSOP (DGS) 10 了解详情

订购与质量

包含信息:
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/FIT 估算
  • 材料成分
  • 认证摘要
  • 持续可靠性监测

推荐产品的参数、评估模块或参考设计可能与此 TI 产品相关

支持与培训

可获得 TI E2E™ 论坛的工程师技术支持

所有内容均由 TI 和社区网友按“原样”提供,并不构成 TI 规范。参阅使用条款

如果您对质量、包装或订购 TI 产品有疑问,请参阅 TI 支持

视频