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INA826

現行

精密、200-μA 電源電流、36-V 電源儀器放大器

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產品規格表

INA826

現行
產品規格表 立即訂購

產品詳細資料

Number of channels 1 Vs (max) (V) 36 Vs (min) (V) 3 Input offset (±) (max) (µV) 150 Voltage gain (min) (V/V) 1 Voltage gain (max) (V/V) 1000 Noise at 1 kHz (typ) (nV√Hz) 18 Features Cost Optimized, Overvoltage protection, Small Size CMRR (min) (dB) 120 Input offset drift (±) (max) (µV/°C) 2 Input bias current (±) (max) (nA) 65 Iq (typ) (mA) 0.2 Bandwidth at min gain (typ) (MHz) 1 Gain error (±) (max) (%) 0.15 Operating temperature range (°C) -40 to 125 Rating Catalog Type Resistor Gain nonlinearity (±) (max) (%) 0.002 Output swing headroom (to negative supply) (typ) (V) 0.1 Output swing headroom (to positive supply) (typ) (V) -0.15 Input common mode headroom (to negative supply) (typ) (V) 0 Input common mode headroom (to positive supply) (typ) (V) -1 Noise at 0.1 Hz to 10 Hz (typ) (µVPP) 0.52
Number of channels 1 Vs (max) (V) 36 Vs (min) (V) 3 Input offset (±) (max) (µV) 150 Voltage gain (min) (V/V) 1 Voltage gain (max) (V/V) 1000 Noise at 1 kHz (typ) (nV√Hz) 18 Features Cost Optimized, Overvoltage protection, Small Size CMRR (min) (dB) 120 Input offset drift (±) (max) (µV/°C) 2 Input bias current (±) (max) (nA) 65 Iq (typ) (mA) 0.2 Bandwidth at min gain (typ) (MHz) 1 Gain error (±) (max) (%) 0.15 Operating temperature range (°C) -40 to 125 Rating Catalog Type Resistor Gain nonlinearity (±) (max) (%) 0.002 Output swing headroom (to negative supply) (typ) (V) 0.1 Output swing headroom (to positive supply) (typ) (V) -0.15 Input common mode headroom (to negative supply) (typ) (V) 0 Input common mode headroom (to positive supply) (typ) (V) -1 Noise at 0.1 Hz to 10 Hz (typ) (µVPP) 0.52
SOIC (D) 8 29.4 mm² 4.9 x 6 VSSOP (DGK) 8 14.7 mm² 3 x 4.9 WSON (DRG) 8 9 mm² 3 x 3
  • Input common-mode range: Includes V–
  • Common-mode rejection:
    • 104 dB, min (G = 10)
    • 100 dB, min at 5 kHz (G = 10)
  • Power-supply rejection: 100 dB, min (G = 1)
  • Low offset voltage: 150 µV, max
  • Gain drift: 1 ppm/°C (G = 1), 35 ppm/°C (G > 1)
  • Noise: 18 nV/√Hz, G ≥ 100
  • Bandwidth: 1 MHz (G = 1), 60 kHz (G = 100)
  • Inputs protected up to ±40 V
  • Rail-to-rail output
  • Supply current: 200 µA
  • Supply range:
    • Single supply: 3 V to 36 V
    • Dual supply: ±1.5 V to ±18 V
  • Specified temperature range:
    –40°C to +125°C
  • Packages: 8-pin VSSOP, SOIC, and WSON
  • Input common-mode range: Includes V–
  • Common-mode rejection:
    • 104 dB, min (G = 10)
    • 100 dB, min at 5 kHz (G = 10)
  • Power-supply rejection: 100 dB, min (G = 1)
  • Low offset voltage: 150 µV, max
  • Gain drift: 1 ppm/°C (G = 1), 35 ppm/°C (G > 1)
  • Noise: 18 nV/√Hz, G ≥ 100
  • Bandwidth: 1 MHz (G = 1), 60 kHz (G = 100)
  • Inputs protected up to ±40 V
  • Rail-to-rail output
  • Supply current: 200 µA
  • Supply range:
    • Single supply: 3 V to 36 V
    • Dual supply: ±1.5 V to ±18 V
  • Specified temperature range:
    –40°C to +125°C
  • Packages: 8-pin VSSOP, SOIC, and WSON

The INA826 is a cost-effective instrumentation amplifier that offers extremely low power consumption and operates over a very wide single-supply or dual-supply range. A single external resistor sets any gain from 1 to 1000. The device offers excellent stability over temperature, even at G > 1, as a result of the low gain drift of only 35 ppm/°C (maximum).

The INA826 is optimized to provide excellent common-mode rejection ratio of over 100 dB (G = 10) over frequencies up to 5 kHz. At G = 1, the common-mode rejection ratio exceeds 84 dB across the full input common-mode range, from the negative supply all the way up to 1 V of the positive supply. Using a rail-to-rail output, the INA826 is a great choice for low-voltage operation from a 3-V single supply, as well as dual supplies up to ±18 V.

Additional circuitry protects the inputs against overvoltage of up to ±40 V beyond the power supplies by limiting the input currents to less than 8 mA.

The INA826 is available in 8-pin SOIC, VSSOP, and tiny 3-mm × 3-mm WSON surface-mount packages. All versions are specified for the –40°C to +125°C temperature range.

The INA826 is a cost-effective instrumentation amplifier that offers extremely low power consumption and operates over a very wide single-supply or dual-supply range. A single external resistor sets any gain from 1 to 1000. The device offers excellent stability over temperature, even at G > 1, as a result of the low gain drift of only 35 ppm/°C (maximum).

The INA826 is optimized to provide excellent common-mode rejection ratio of over 100 dB (G = 10) over frequencies up to 5 kHz. At G = 1, the common-mode rejection ratio exceeds 84 dB across the full input common-mode range, from the negative supply all the way up to 1 V of the positive supply. Using a rail-to-rail output, the INA826 is a great choice for low-voltage operation from a 3-V single supply, as well as dual supplies up to ±18 V.

Additional circuitry protects the inputs against overvoltage of up to ±40 V beyond the power supplies by limiting the input currents to less than 8 mA.

The INA826 is available in 8-pin SOIC, VSSOP, and tiny 3-mm × 3-mm WSON surface-mount packages. All versions are specified for the –40°C to +125°C temperature range.
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技術文件

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重要文件 類型 標題 格式選項 日期
* Data sheet INA826 Precision, 200-µA Supply Current, 3-V to 36-V Supply Instrumentation Amplifier With Rail-to-Rail Output datasheet (Rev. G) PDF | HTML 2020年 6月 25日
Application brief Offset Correction Methods: Laser Trim, e-Trim, and Chopper (Rev. D) PDF | HTML 2024年 12月 5日
Circuit design Circuit for driving a switched-capacitor SAR ADC w/ a buffered instrument amp (Rev. B) PDF | HTML 2024年 9月 24日
Circuit design Circuit for driving a high-voltage SAR with an instrumentation amplifier (Rev. A) PDF | HTML 2024年 9月 18日
Circuit design Circuit for driving a switched-capacitor SAR ADC with an instrumentation amp (Rev. B) PDF | HTML 2024年 9月 17日
Application brief How to Select Amplifiers for Pressure Transmitter Applications (Rev. B) PDF | HTML 2023年 2月 14日
Application note Cost-Optimized, High-Performance Front-End Design for Analog Input Modules PDF | HTML 2022年 6月 22日
Application brief Simplify Voltage and Current Measurement in Battery Test Equipment (Rev. A) PDF | HTML 2022年 3月 10日
Application note Importance of Input Bias Current Return Paths in Instrumentation Amplifier Apps PDF | HTML 2021年 7月 27日
Application brief Supporting High Voltage Common Mode Using Difference Amplifier PDF | HTML 2021年 3月 8日
Application brief Supporting High Voltage Common Mode Using Instrumentational Amplifier PDF | HTML 2021年 2月 23日
User guide Universal Instrumentation Amplifier EVM: Alternate Pinout User's Guide 2020年 2月 7日
Application brief Comprehensive Error Calculation for Instrumentation Amplifiers 2019年 3月 26日
E-book The Signal e-book: A compendium of blog posts on op amp design topics 2017年 3月 28日
Analog Design Journal Analog Applications Journal 3Q 2015 2015年 7月 24日
Analog Design Journal Design tips for a resistive-bridge pressure sensor in industrial process-control 2015年 7月 24日
Analog Design Journal 4Q 2011 Issue Analog Applications Journal 2011年 11月 9日
Analog Design Journal Analog linearization of resistance temperature detectors 2011年 11月 9日

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開發板

INA826EVM — INA826 評估模組

The INA826EVM is intended to provide basic functional evaluation of the INA826.

使用指南: PDF
TI.com 無法提供
開發板

INAEVM-ALT-SO8 — 採用 SO-8 (D) 封裝之具有替代針腳的儀器放大器的評估模組

INAEVM-ALT-SO8 是具有替代針腳配置的儀器放大器評估模組 (EVM)，可用於簡化 SO-8 (D) 封裝的精密儀器放大器原型設計，針腳配置如使用指南所示。EVM 為未組裝的空板，因此儀器放大器裝置樣品需單獨訂購。

使用指南: PDF
TI.com 無法提供
模擬型號

INA826 PSpice Model

SBOMC48.ZIP (63 KB) - PSpice Model
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模擬型號

INA826 TINA-TI Reference Design

SBOM471.TSC (201 KB) - TINA-TI Reference Design
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模擬型號

INA826 TINA-TI Spice Model

SBOM472.ZIP (9 KB) - TINA-TI Spice Model
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模擬型號

INA826 Vcm vs Vout TINA-TI Model

SLOM384.TSC (59 KB) - TINA-TI Reference Design
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計算工具

ANALOG-ENGINEER-CALC — PC software analog engineer's calculator

The analog engineer’s calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting operational-amplifier (...)

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PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具

PSpice® for TI 是有助於評估類比電路功能的設計和模擬環境。這款全功能設計和模擬套件使用 Cadence® 的類比分析引擎。PSpice for TI 包括業界最大的模型庫之一，涵蓋我們的類比和電源產品組合，以及特定類比行為模型，且使用無需支付費用。

PSpice for TI 設計和模擬環境可讓您使用其內建函式庫來模擬複雜的混合訊號設計。在進行佈局和製造之前，建立完整的終端設備設計和解決方案原型，進而縮短上市時間並降低開發成本。 

在 PSpice for TI 設計與模擬工具中，您可以搜尋 TI (...)
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TINA-TI — 基於 SPICE 的類比模擬程式

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 (...)
使用指南: PDF
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參考設計

TIDA-010065 — 基於高效、低排放、隔離式 DC/DC 轉換器的類比輸入模組參考設計

此參考設計為一簡化架構，可產生隔離式電源供應，適用於測量隔離電壓與電流的隔離式放大器。具 5-V 輸入之強化隔離操作的完全整合式 DC/DC 轉換器，並具備可設定 5-V 或 5.4-V 輸出 (適用於低壓降穩壓器 (LDO) 的空餘空間) 可產生隔離電源。介接至 ±50-mV 輸入範圍隔離放大器，且配置爲通道隔離輸入的分流，可測量電流。連接至 ±250-mV 或 ±12-V 輸入範圍隔離放大器，且配置爲群組隔離輸入的潛在分頻器，可測量電壓。隔離放大器介面直接輸出至 24 位元 ΔΣ 類比轉數位轉換器 (ADC)，或使用增益放大器擴展至 ±10 V，並連接至 16 位元 SAR ADC (...)
Design guide: PDF
電路圖: PDF
參考設計

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This evaluation kit and reference design implements the AMC130x reinforced isolated delta-sigma modulators along with integrated Sinc filters in the C2000™ TMS320F28377D Delfino™ microcontroller. The design provides an ability to evaluate the  performance of these measurements: three motor (...)
使用指南: PDF
電路圖: PDF
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TIDA-00548 是一款具備隔離的雙通道 4 至 20mA 類比輸入參考設計，可用作功能安全可程式化邏輯控制器 (PLC) 的一部分。此參考設計透過一顆 32 位元高效能類比數位轉換器 (ADC) 輸出數位化的輸入值。採用 RM4x 雙核心 ARM® Cortex®-R4 架構的 CPU，具備 lockstep 技術與內建自我測試 (BIST)，可比對最多九組可選類比輸入訊號鏈路的轉換值。雙輸入架構搭配兩組獨立的負載電阻，支援冗餘測量單一路 4 至 20mA 電流迴路，或測量兩組獨立的電流迴路。Hercules™ RM 系列 ARM Cortex-R (...)
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電路圖: PDF
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TIDA-00209 — 隔離電流分流及電壓測量參考設計，適用於搭載 AM437x 的馬達驅動器

This reference design uses the AMC130x reinforced isolated delta-sigma modulators along with AM437x Sitara™ ARM® Cortex® -A9 Processor, which implements Sinc filters on PRU-ICSS. The design provides an ability to evaluate the performance of these measurements: three motor currents, three (...)
Design guide: PDF
電路圖: PDF
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This reference design that is precision verified implements an analog input module for industrial voltages, currents and temperature sensors.  For industrial outputs, the possible input ranges include: 4 to 20 mA, 0 to 20 mA, +/-25 mA, 0 to 5 V, 0 to 10 V, +/-5 V and +/-10 V. The design (...)
使用指南: PDF
電路圖: PDF
封裝 針腳 CAD 符號、佔位空間與 3D 模型
SOIC (D) 8 Ultra Librarian
VSSOP (DGK) 8 Ultra Librarian
WSON (DRG) 8 Ultra Librarian
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