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

OPA4191

現行

四路、低功耗、36-V、精確、含 RRIO 的 e-trim 放大器

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產品規格表

OPA4191

現行
產品規格表 立即訂購

產品詳細資料

Number of channels 4 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) 0.025 Offset drift (typ) (µV/°C) 0.1 Input bias current (max) (pA) 20 GBW (typ) (MHz) 2.5 Features EMI Hardened, High Cload Drive, MUX Friendly, Small Size, e-Trim™ Slew rate (typ) (V/µs) 5.5 Rail-to-rail In, Out Iq per channel (typ) (mA) 0.14 Vn at 1 kHz (typ) (nV√Hz) 15 CMRR (typ) (dB) 140 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) 0.1 Output swing headroom (to negative supply) (typ) (V) 0.05 Output swing headroom (to positive supply) (typ) (V) -0.05 THD + N at 1 kHz (typ) (%) 0.0012
Number of channels 4 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) 0.025 Offset drift (typ) (µV/°C) 0.1 Input bias current (max) (pA) 20 GBW (typ) (MHz) 2.5 Features EMI Hardened, High Cload Drive, MUX Friendly, Small Size, e-Trim™ Slew rate (typ) (V/µs) 5.5 Rail-to-rail In, Out Iq per channel (typ) (mA) 0.14 Vn at 1 kHz (typ) (nV√Hz) 15 CMRR (typ) (dB) 140 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) 0.1 Output swing headroom (to negative supply) (typ) (V) 0.05 Output swing headroom (to positive supply) (typ) (V) -0.05 THD + N at 1 kHz (typ) (%) 0.0012
WQFN (RUM) 16 16 mm² (4 mm × 4 mm) SOIC (D) 14 51.9 mm² (8.65 mm × 6 mm) TSSOP (PW) 14 32 mm² (5 mm × 6.4 mm)
  • Low offset voltage: ±5 µV
  • Low offset voltage drift: ±0.1 µV/°C
  • Low noise: 15 nV/√ Hz at 1 kHz
  • High common-mode rejection: 140 dB
  • Low bias current: ±5 pA
  • Rail-to-rail input and output
  • Wide bandwidth: 2.5-MHz GBW
  • High slew rate: 5 V/µs
  • Low quiescent current: 140 µA per amplifier
  • Wide supply: ±2.25 V to ±18 V, 4.5 V to 36 V
  • EMI/RFI filtered inputs
  • Differential input voltage range to supply rail
  • High capacitive load drive capability: 1 nF
  • Industry standard packages:
    • Single in SOIC-8, SOT-5, and VSSOP-8
    • Dual in SOIC-8 and VSSOP-8
    • Quad in SOIC-14, TSSOP-14, and WQFN-16
  • Low offset voltage: ±5 µV
  • Low offset voltage drift: ±0.1 µV/°C
  • Low noise: 15 nV/√ Hz at 1 kHz
  • High common-mode rejection: 140 dB
  • Low bias current: ±5 pA
  • Rail-to-rail input and output
  • Wide bandwidth: 2.5-MHz GBW
  • High slew rate: 5 V/µs
  • Low quiescent current: 140 µA per amplifier
  • Wide supply: ±2.25 V to ±18 V, 4.5 V to 36 V
  • EMI/RFI filtered inputs
  • Differential input voltage range to supply rail
  • High capacitive load drive capability: 1 nF
  • Industry standard packages:
    • Single in SOIC-8, SOT-5, and VSSOP-8
    • Dual in SOIC-8 and VSSOP-8
    • Quad in SOIC-14, TSSOP-14, and WQFN-16

The OPAx191 family (OPA191, OPA2191, and OPA4191) is a new generation of 36-V, e-trim™ operational amplifiers.

These devices offer outstanding dc precision and ac performance, including rail-to-rail input/output, low offset voltage (±5 µV, typ), low offset drift (±0.2 µV/°C, typ), and 2-MHz bandwidth.

Unique features, such as differential input-voltage range to the supply rail, high output current (±65 mA), high capacitive load drive of up to 1 nF, and high slew rate (5 V/µs), make the OPAx191 a robust, high-performance operational amplifier for high-voltage industrial applications.

The OPAx191 family of op amps is available in standard packages and is specified from –40°C to +125°C.

The OPAx191 family (OPA191, OPA2191, and OPA4191) is a new generation of 36-V, e-trim™ operational amplifiers.

These devices offer outstanding dc precision and ac performance, including rail-to-rail input/output, low offset voltage (±5 µV, typ), low offset drift (±0.2 µV/°C, typ), and 2-MHz bandwidth.

Unique features, such as differential input-voltage range to the supply rail, high output current (±65 mA), high capacitive load drive of up to 1 nF, and high slew rate (5 V/µs), make the OPAx191 a robust, high-performance operational amplifier for high-voltage industrial applications.

The OPAx191 family of op amps is available in standard packages and is specified from –40°C to +125°C.
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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 OPAx191 36-V, Low-Power, Precision, CMOS, Rail-to-Rail Input/Output, Low Offset Voltage, Low Input Bias Current Op Amp datasheet (Rev. D) PDF | HTML 2021/8/4
Application brief Offset Correction Methods: Laser Trim, e-Trim, and Chopper (Rev. D) PDF | HTML 2024/12/5
Application brief MUX-Friendly, Precision Operational Amplifiers (Rev. C) PDF | HTML 2022/2/8
Application brief Low-Power, Small-Size, High-Side Current Monitoring 2020/6/3
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
電子書 The Signal e-book: A compendium of blog posts on op amp design topics PDF | HTML 2017/3/28

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
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開發板

QFN16-DIP-EVM — 16 針腳 QFN 至 DIP 適配器評估模組

QFN16-DIP-EVM 為 TI RUM16 封裝零件製作雛形提供快速且簡易的平台。此工具專為 TI 的四運算放大器所設計，但也可搭配相同體積裝置使用。評分可將每個裝置分成獨立的電路板。使用隨附的端子排，電路板可插入 DIP 型插座或無焊接模擬板。
使用指南: PDF
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模擬型號

OPAx191 PSpice Model (Rev. B)

SBOMA30B.ZIP (32 KB) - PSpice 模型
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模擬型號

OPAx191 TINA-TI Reference Design (Rev. C)

SBOM962C (316 KB) - TINA-TI 參考設計
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模擬型號

OPAx191 TINA-TI Spice Model (Rev. C)

SBOM961C.ZIP (10 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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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, (...)
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封裝 針腳 CAD 符號、佔位空間與 3D 模型
WQFN (RUM) 16 Ultra Librarian
SOIC (D) 14 Ultra Librarian
TSSOP (PW) 14 Ultra Librarian
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