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放大器
運算放大器 (op amps)
精密運算放大器 (Vos < 1mV)

OPA189

現行

單路 14-MHz、可搭配多工器使用、低雜訊、零漂移、RRO、CMOS 精密運算放大器

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產品規格表

OPA189

現行
產品規格表 立即訂購

產品詳細資料

Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 36 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 4.5 Vos (offset voltage at 25°C) (max) (mV) 0.003 Offset drift (typ) (µV/°C) 0.005 Input bias current (max) (pA) 300 GBW (typ) (MHz) 14 Features EMI Hardened, High Cload Drive, MUX Friendly, Zero Drift Slew rate (typ) (V/µs) 20 Rail-to-rail In to V-, Out Iq per channel (typ) (mA) 1.3 Vn at 1 kHz (typ) (nV√Hz) 5.2 CMRR (typ) (dB) 168 Rating Catalog Operating temperature range (°C) -40 to 125 Iout (typ) (A) 0.065 Architecture CMOS Input common mode headroom (to negative supply) (typ) (V) -0.1 Input common mode headroom (to positive supply) (typ) (V) -2.5 Output swing headroom (to negative supply) (typ) (V) 0.02 Output swing headroom (to positive supply) (typ) (V) -0.02 THD + N at 1 kHz (typ) (%) 0.00006
Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 36 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 4.5 Vos (offset voltage at 25°C) (max) (mV) 0.003 Offset drift (typ) (µV/°C) 0.005 Input bias current (max) (pA) 300 GBW (typ) (MHz) 14 Features EMI Hardened, High Cload Drive, MUX Friendly, Zero Drift Slew rate (typ) (V/µs) 20 Rail-to-rail In to V-, Out Iq per channel (typ) (mA) 1.3 Vn at 1 kHz (typ) (nV√Hz) 5.2 CMRR (typ) (dB) 168 Rating Catalog Operating temperature range (°C) -40 to 125 Iout (typ) (A) 0.065 Architecture CMOS Input common mode headroom (to negative supply) (typ) (V) -0.1 Input common mode headroom (to positive supply) (typ) (V) -2.5 Output swing headroom (to negative supply) (typ) (V) 0.02 Output swing headroom (to positive supply) (typ) (V) -0.02 THD + N at 1 kHz (typ) (%) 0.00006
VSSOP (DGK) 8 14.7 mm² (3 mm × 4.9 mm) SOT-23 (DBV) 5 8.12 mm² (2.9 mm × 2.8 mm) SOIC (D) 8 29.4 mm² (4.9 mm × 6 mm)
  • Ultra-high precision:
    • Zero-drift: 0.005 µV/°C (OPA189)
    • Ultra-low offset voltage: 3 µV maximum (OPA189)
  • Excellent dc precision:
    • CMRR: 168 dB
    • Open-loop gain: 170 dB
  • Low noise:
    • en at 1 kHz: 5.2 nV/√Hz
    • 0.1-Hz to 10-Hz noise: 0.1 µVPP
  • Excellent dynamic performance:
    • Gain bandwidth: 14 MHz
    • Slew rate: 20 V/µs
    • Fast settling: 10-V step, 0.01% in 1.1 µs
  • Robust design:
    • MUX-friendly inputs
    • RFI/EMI filtered inputs
  • Wide supply range: 4.5 V to 36 V
  • Quiescent current: 1.7 mA (maximum)
  • Rail-to-rail output
  • Input includes negative rail
  • Ultra-high precision:
    • Zero-drift: 0.005 µV/°C (OPA189)
    • Ultra-low offset voltage: 3 µV maximum (OPA189)
  • Excellent dc precision:
    • CMRR: 168 dB
    • Open-loop gain: 170 dB
  • Low noise:
    • en at 1 kHz: 5.2 nV/√Hz
    • 0.1-Hz to 10-Hz noise: 0.1 µVPP
  • Excellent dynamic performance:
    • Gain bandwidth: 14 MHz
    • Slew rate: 20 V/µs
    • Fast settling: 10-V step, 0.01% in 1.1 µs
  • Robust design:
    • MUX-friendly inputs
    • RFI/EMI filtered inputs
  • Wide supply range: 4.5 V to 36 V
  • Quiescent current: 1.7 mA (maximum)
  • Rail-to-rail output
  • Input includes negative rail

The OPA189, OPA2189, and OPA4189 (OPAx189) high-precision operational amplifiers are ultra-low noise, fast-settling, zero-drift devices that provide rail-to-rail output operation and feature a unique MUX-friendly architecture and controlled start-up system. These features and excellent ac performance, combined with only 0.4 µV of offset voltage and 0.005µV/°C of drift over temperature for the single-channel version, make the OPAx189 a great choice for precision instrumentation, signal measurement, and active filtering applications. Moreover, the MUX-friendly input architecture prevents inrush current when applying large input differential voltages, which improves settling performance in multichannel systems, all while providing robust ESD protection during shipment, handling, and assembly.

All versions are specified from –40°C to +125°C.

The OPA189, OPA2189, and OPA4189 (OPAx189) high-precision operational amplifiers are ultra-low noise, fast-settling, zero-drift devices that provide rail-to-rail output operation and feature a unique MUX-friendly architecture and controlled start-up system. These features and excellent ac performance, combined with only 0.4 µV of offset voltage and 0.005µV/°C of drift over temperature for the single-channel version, make the OPAx189 a great choice for precision instrumentation, signal measurement, and active filtering applications. Moreover, the MUX-friendly input architecture prevents inrush current when applying large input differential voltages, which improves settling performance in multichannel systems, all while providing robust ESD protection during shipment, handling, and assembly.

All versions are specified from –40°C to +125°C.
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技術文件

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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 OPAx189 Precision, Lowest-Noise, 36-V, Zero-Drift, 14-MHz, MUX-Friendly, Rail-to-Rail Output Operational Amplifiers datasheet (Rev. I) PDF | HTML 2021/10/6
白皮書 Optimizing Chopper Amplifier Accuracy (Rev. A) PDF | HTML 2025/5/15
Application brief Offset Correction Methods: Laser Trim, e-Trim, and Chopper (Rev. D) PDF | HTML 2024/12/5
電子書 Analog Engineer’s Circuit Cookbook: Amplifiers (Rev. D) PDF | HTML 2024/9/24
Application brief How to Select Amplifiers for Pressure Transmitter Applications (Rev. B) PDF | HTML 2023/2/14
Application brief MUX-Friendly, Precision Operational Amplifiers (Rev. C) PDF | HTML 2022/2/8
技術文章 How to achieve microvoltage-level precision in thermopile applications PDF | HTML 2021/12/9
Application brief Zero-Drift Amplifiers: Features and Benefits (Rev. C) 2021/1/28
Application brief Minimize Errors in Weigh-Scales With Zero-Drift, EMI-Hardened, Precision Amps (Rev. A) PDF | HTML 2020/12/8
Application brief How to Select Precision Amplifiers for Semiconductor Testers (Rev. A) PDF | HTML 2020/12/3
類比設計期刊 Precision signal conditioning for safety-enabled AIMs in factory automation 2019/9/30
Application brief EMI-Hardened Op Amps Reduce Errors in EKGs (Rev. A) 2019/8/21
Application brief EMI-Hardened Op Amps Reduce Errors in Infusion Pumps (Rev. A) 2019/8/21
Application brief Green-Williams-Lis: Improved Op Amp Spice Model 2019/1/28
Application brief Multichannel Analog Input Modules for PLC Equipment 2019/1/4

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

AMP-PDK-EVM — 放大器性能開發套件評估模組

放大器性能開發套件 (PDK) 是一款評估模組 (EVM) 套件，可測試通用運算放大器 (op amp) 參數，並與大多數運算放大器和比較器相容。EVM 套件提供主板和多個插槽式子卡選項，可滿足封裝需求，使工程師能夠快速評估和驗證裝置性能。

AMP-PDK-EVM 套件支援五種最熱門的業界標準封裝，包括：

  • D (SOIC-8 和 SOIC-14)
  • PW (TSSOP-14)
  • DGK (VSSOP-8)
  • DBV (SOT23-5 和 SOT23-6)
  • DCK (SC70-5 和 SC70-6)
使用指南: PDF | HTML
支援產品和硬體
模擬型號

OPAx189 PSpice Model (Rev. E)

SBOMAE9E.ZIP (30 KB) - PSpice 模型
支援產品和硬體
模擬型號

OPAx189 TINA-TI Reference Design (Rev. D)

SBOMAF0D (342 KB) - TINA-TI 參考設計
支援產品和硬體
模擬型號

OPAx189 TINA-TI Spice Model (Rev. E)

SBOMAF1E.ZIP (11 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。

支援產品和硬體
計算工具

OPAMP-NOISECALC — Noise Calculator

This folder contains three tools to help in understandning and managing noise in cicuits. The included tools are:

  • A noise generator tool - This is a Lab View 4-Run Time executable that generates Gaussian white noise, uniform white noise, 1/f noise, short noise, and 60Hz line noise. Temporal data, (...)
支援產品和硬體
封裝 針腳 CAD 符號、佔位空間與 3D 模型
VSSOP (DGK) 8 Ultra Librarian
SOT-23 (DBV) 5 Ultra Librarian
SOIC (D) 8 Ultra Librarian
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