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運算放大器 (op amps)
一般用途運算放大器

OPA4171

現行

四路、36-V、3-MHz、低功耗運算放大器

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OPA4991 現行 四路、40-V、4.5-MHz、低功耗運算放大器 Rail-to-rail I/O, wider supply range (2.7 V to 40 V), higher GBW (4.5 MHz), lower offset voltage (0.83 mV), lower noise (10.8 nV/√Hz)

OPA4171

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) 2.7 Rail-to-rail In to V-, Out GBW (typ) (MHz) 3 Slew rate (typ) (V/µs) 1.5 Vos (offset voltage at 25°C) (max) (mV) 1.8 Iq per channel (typ) (mA) 0.475 Vn at 1 kHz (typ) (nV√Hz) 14 Rating Catalog Operating temperature range (°C) -40 to 125 Offset drift (typ) (µV/°C) 0.3 Features EMI Hardened Input bias current (max) (pA) 15 CMRR (typ) (dB) 120 Iout (typ) (A) 0.025 Architecture CMOS Input common mode headroom (to negative supply) (typ) (V) -0.1 Input common mode headroom (to positive supply) (typ) (V) -2 Output swing headroom (to negative supply) (typ) (V) 0.03 Output swing headroom (to positive supply) (typ) (V) -0.35
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) 2.7 Rail-to-rail In to V-, Out GBW (typ) (MHz) 3 Slew rate (typ) (V/µs) 1.5 Vos (offset voltage at 25°C) (max) (mV) 1.8 Iq per channel (typ) (mA) 0.475 Vn at 1 kHz (typ) (nV√Hz) 14 Rating Catalog Operating temperature range (°C) -40 to 125 Offset drift (typ) (µV/°C) 0.3 Features EMI Hardened Input bias current (max) (pA) 15 CMRR (typ) (dB) 120 Iout (typ) (A) 0.025 Architecture CMOS Input common mode headroom (to negative supply) (typ) (V) -0.1 Input common mode headroom (to positive supply) (typ) (V) -2 Output swing headroom (to negative supply) (typ) (V) 0.03 Output swing headroom (to positive supply) (typ) (V) -0.35
SOIC (D) 14 51.9 mm² (8.65 mm × 6 mm) TSSOP (PW) 14 32 mm² (5 mm × 6.4 mm)
  • Supply range: 2.7V to 36V, ±1.35V to ±18V
  • Low noise: 14nV/√ Hz
  • Low offset drift: ±0.3µV/°C (Typical)
  • RFI filtered inputs
  • Input range includes the negative supply
  • Input range operates to positive supply
  • Rail-to-rail output
  • Gain bandwidth: 3MHz
  • Low quiescent current: 475µA per amplifier
  • High common-mode rejection: 120dB (typical)
  • Low-input bias current: 8pA
  • Industry-standard packages:
    • 5-pin SOT-23
    • 8-pin SOIC
    • 14-pin TSSOP
  • microPackages:
    • Single in SOT-553
    • Dual in VSSOP-8
  • Supply range: 2.7V to 36V, ±1.35V to ±18V
  • Low noise: 14nV/√ Hz
  • Low offset drift: ±0.3µV/°C (Typical)
  • RFI filtered inputs
  • Input range includes the negative supply
  • Input range operates to positive supply
  • Rail-to-rail output
  • Gain bandwidth: 3MHz
  • Low quiescent current: 475µA per amplifier
  • High common-mode rejection: 120dB (typical)
  • Low-input bias current: 8pA
  • Industry-standard packages:
    • 5-pin SOT-23
    • 8-pin SOIC
    • 14-pin TSSOP
  • microPackages:
    • Single in SOT-553
    • Dual in VSSOP-8

The OPA171, OPA2171, and OPA4171 (OPAx171) are a family of 36V, single-supply, low-noise operational amplifiers with the ability to operate on supplies ranging from 2.7V (±1.35V) to 36V (±18V). These devices are available in micro-packages and offer low offset, drift, and bandwidth with low quiescent current. The single, dual, and quad versions all have identical specifications for maximum design flexibility.

Unlike most operational amplifiers, which are specified at only one supply voltage, the OPAx171 family is specified from 2.7V to 36V. Input signals beyond the supply rails do not cause phase reversal. The OPAx171 family is stable with capacitive loads up to 300pF. The input can operate 100mV below the negative rail and within 2V of the top rail during normal operation. These devices can operate with full rail-to-rail input 100mV beyond the top rail, but with reduced performance within 2V of the top rail.

The OPAx171 series of operational amplifiers are specified from –40°C to +125°C.

The OPA171, OPA2171, and OPA4171 (OPAx171) are a family of 36V, single-supply, low-noise operational amplifiers with the ability to operate on supplies ranging from 2.7V (±1.35V) to 36V (±18V). These devices are available in micro-packages and offer low offset, drift, and bandwidth with low quiescent current. The single, dual, and quad versions all have identical specifications for maximum design flexibility.

Unlike most operational amplifiers, which are specified at only one supply voltage, the OPAx171 family is specified from 2.7V to 36V. Input signals beyond the supply rails do not cause phase reversal. The OPAx171 family is stable with capacitive loads up to 300pF. The input can operate 100mV below the negative rail and within 2V of the top rail during normal operation. These devices can operate with full rail-to-rail input 100mV beyond the top rail, but with reduced performance within 2V of the top rail.

The OPAx171 series of operational amplifiers are 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 OPAx171 36V, Single-Supply, SOT-553, General-Purpose Operational Amplifiers datasheet (Rev. H) PDF | HTML 2024/6/5
電子書 The Signal e-book: A compendium of blog posts on op amp design topics PDF | HTML 2017/3/28
應用說明 OPA171 EMI Immunity Performance 2016/3/29
電子書 Analog Engineer’s Pocket Reference Guide Fifth Edition (Rev. D) PDF | HTML 2014/9/30

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

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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模擬型號

OPAx171 Family PSpice Model (Rev. C)

SBOM440C.ZIP (32 KB) - PSpice 模型
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模擬型號

OPAy171 Family TINA-TI Reference Design (Rev. C)

SBOM442C.TSC (357 KB) - TINA-TI 參考設計
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模擬型號

OPAy171 Family TINA-TI Spice Model (Rev. B)

SBOM441B.ZIP (8 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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參考設計

TIDA-00835 — 採用 24 位元 Delta-Sigma ADC 的高準確度 ±0.5% 電流和隔離式電壓量測參考設計

TIDA-00835 參考設計採用雙極輸入配置，結合具有四通道、24 位元同時取樣差動輸入的 ΔΣ ADC，在寬動態範圍內進行精確的電壓和電流測量。配置 ADC 來測量 ±2.5V 雙極輸入。  使用固定增益放大器，將輸入調整至 ±2.5V 的 ADC 測量範圍。此 AFE 使用通用外部時脈將兩個 ADC 串接在一起，將輸入通道數量擴充至八個，並同時取樣所有輸入通道。每個模組擁有更多測量通道，可降低整體系統成本。

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封裝 針腳 CAD 符號、佔位空間與 3D 模型
SOIC (D) 14 Ultra Librarian
TSSOP (PW) 14 Ultra Librarian
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