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INA122

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單電源供電、MicroPower 儀器放大器

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產品規格表

INA122

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) 2.2 Input offset (±) (max) (µV) 250 Voltage gain (min) (V/V) 5 Voltage gain (max) (V/V) 10000 Noise at 1 kHz (typ) (nV√Hz) 60 Features Low power CMRR (min) (dB) 83 Input offset drift (±) (max) (µV/°C) 3 Input bias current (±) (max) (nA) 25 Iq (typ) (mA) 0.06 Bandwidth at min gain (typ) (MHz) 0.12 Gain error (±) (max) (%) 0.5 Operating temperature range (°C) -40 to 85 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) -0.05 Input common mode headroom (to negative supply) (typ) (V) 0 Input common mode headroom (to positive supply) (typ) (V) -1.6 Noise at 0.1 Hz to 10 Hz (typ) (µVPP) 2
Number of channels 1 Vs (max) (V) 36 Vs (min) (V) 2.2 Input offset (±) (max) (µV) 250 Voltage gain (min) (V/V) 5 Voltage gain (max) (V/V) 10000 Noise at 1 kHz (typ) (nV√Hz) 60 Features Low power CMRR (min) (dB) 83 Input offset drift (±) (max) (µV/°C) 3 Input bias current (±) (max) (nA) 25 Iq (typ) (mA) 0.06 Bandwidth at min gain (typ) (MHz) 0.12 Gain error (±) (max) (%) 0.5 Operating temperature range (°C) -40 to 85 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) -0.05 Input common mode headroom (to negative supply) (typ) (V) 0 Input common mode headroom (to positive supply) (typ) (V) -1.6 Noise at 0.1 Hz to 10 Hz (typ) (µVPP) 2
PDIP (P) 8 92.5083 mm² 9.81 x 9.43 SOIC (D) 8 29.4 mm² 4.9 x 6
  • Low quiescent current: 60µA
  • Wide power supply range: 2.2V to 36V
  • Rail-to-rail output swing
  • Low offset voltage: 250µV maximum
  • Low offset drift: 3µV/°C maximum
  • Low noise: 60nV/√Hz
  • Low input bias current: 25nA maximum
  • Packages
    • 4.9mm × 6mm SOIC
    • 9.81mm × 9.43mm PDIP
  • Low quiescent current: 60µA
  • Wide power supply range: 2.2V to 36V
  • Rail-to-rail output swing
  • Low offset voltage: 250µV maximum
  • Low offset drift: 3µV/°C maximum
  • Low noise: 60nV/√Hz
  • Low input bias current: 25nA maximum
  • Packages
    • 4.9mm × 6mm SOIC
    • 9.81mm × 9.43mm PDIP

The INA122 is a precision instrumentation amplifier for accurate, low-noise differential signal acquisition. The two-op-amp design provides excellent performance with very low quiescent current (60µA), and is designed for portable instrumentation and data acquisition systems. The INA122 can be operated with single or dual power supplies from 2.2V to 36V.

A single external resistor sets gain from 5V/V to 10000V/V. Laser trimming provides very low offset voltage (250µV maximum), offset voltage drift (3µV/°C maximum) and excellent common-mode rejection.

Package options include 8-pin plastic DIP and SOIC surface-mount packages. Both packages are specified for the −40°C to +85°C temperature range.

The INA122 is a precision instrumentation amplifier for accurate, low-noise differential signal acquisition. The two-op-amp design provides excellent performance with very low quiescent current (60µA), and is designed for portable instrumentation and data acquisition systems. The INA122 can be operated with single or dual power supplies from 2.2V to 36V.

A single external resistor sets gain from 5V/V to 10000V/V. Laser trimming provides very low offset voltage (250µV maximum), offset voltage drift (3µV/°C maximum) and excellent common-mode rejection.

Package options include 8-pin plastic DIP and SOIC surface-mount packages. Both packages are specified for the −40°C to +85°C temperature range.
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重要文件 類型 標題 格式選項 日期
* Data sheet INA122 Single Supply, Micropower Instrumentation Amplifier datasheet (Rev. B) PDF | HTML 2025年 12月 18日
Application note Importance of Input Bias Current Return Paths in Instrumentation Amplifier Apps PDF | HTML 2021年 7月 27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 4Q 2015 Analog Applications Journal 2015年 10月 30日
Analog Design Journal VCM vs. VOUT plots for instrumentation amplifiers with two op amps 2015年 10月 30日

設計與開發

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開發板

INAEVM — 通用儀器放大器評估模組

The universal INAEVM (Instrumentation Amplifier Evaluation Module) is available in two package options that simplify prototyping precision instrumentation amplifiers in either the SO-8 (D) package or the MSOP-8(DGK) package with the pinout shown.  See the chart in the user guide (...)

使用指南: PDF | HTML
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模擬型號

INA122 PSpice Model

SBOMCD7.ZIP (24 KB) - PSpice Model
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模擬型號

INA122 TINA-TI Reference Design (Rev. B)

SBOC142B.TSC (67 KB) - TINA-TI Reference Design
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模擬型號

INA122 TINA-TI Spice Model (Rev. A)

SBOM211A.ZIP (4 KB) - TINA-TI Spice Model
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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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模擬工具

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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封裝 針腳 CAD 符號、佔位空間與 3D 模型
PDIP (P) 8 Ultra Librarian
SOIC (D) 8 Ultra Librarian
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