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INA122

現行

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
SOIC (D) 8 29.4 mm² (4.9 mm × 6 mm) PDIP (P) 8 92.5083 mm² (9.81 mm × 9.43 mm)
  • 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 下載最新的英文版本 日期
* 資料表 INA122 Single Supply, Micropower Instrumentation Amplifier datasheet (Rev. B) PDF | HTML 2025/12/18
應用說明 Importance of Input Bias Current Return Paths in Instrumentation Amplifier Apps PDF | HTML 2021/7/27
電子書 The Signal e-book: A compendium of blog posts on op amp design topics PDF | HTML 2017/3/28
類比設計期刊 VCM vs. VOUT plots for instrumentation amplifiers with two op amps 2015/10/30
類比設計期刊 4Q 2015 Analog Applications Journal 2015/10/30

設計與開發

如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。

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 模型
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模擬型號

INA122 TINA-TI Reference Design (Rev. B)

SBOC142B.TSC (67 KB) - TINA-TI 參考設計
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模擬型號

INA122 TINA-TI Spice Model (Rev. A)

SBOM211A.ZIP (4 KB) - TINA-TI Spice 模型
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計算工具

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

類比工程師的計算機旨在加速類比電路設計工程師定期使用的許多重複計算。此基於 PC 的工具提供圖形介面，列出各種常見計算，從使用回饋電阻器設定運算放大器增益到選擇適當的電路設計元件以穩定類比數位轉換器 (ADC) 驅動緩衝電路。

除了作為獨立工具使用外，此計算機還與類比工程師口袋參考中描述的概念相得益彰。

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