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運算放大器 (op amps)
精密運算放大器 (Vos < 1mV)

OPA4277

現行

四路、低偏移 (10 µV)、精密運算放大器

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OPA4205 現行 四路、軌對軌、雙極精密 e-trim™ 運算放大器，具低輸入偏壓電流與低雜訊 Improved AC performance (3.6 MHz, 3.2 V/µs) at lower power (0.22 mA) implementing e-Trim™ and Super Beta precision technologies

OPA4277

現行
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 Vos (offset voltage at 25°C) (max) (mV) 0.05 Offset drift (typ) (µV/°C) 0.15 Input bias current (max) (pA) 2800 GBW (typ) (MHz) 1 Slew rate (typ) (V/µs) 0.8 Rail-to-rail No Iq per channel (typ) (mA) 0.79 Vn at 1 kHz (typ) (nV√Hz) 8 CMRR (typ) (dB) 140 Rating Catalog Operating temperature range (°C) -40 to 85 Iout (typ) (A) 0.035 Architecture Bipolar Input common mode headroom (to negative supply) (typ) (V) 2 Input common mode headroom (to positive supply) (typ) (V) -2 Output swing headroom (to negative supply) (typ) (V) 0.5 Output swing headroom (to positive supply) (typ) (V) -1.2 THD + N at 1 kHz (typ) (%) 0.002
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 Vos (offset voltage at 25°C) (max) (mV) 0.05 Offset drift (typ) (µV/°C) 0.15 Input bias current (max) (pA) 2800 GBW (typ) (MHz) 1 Slew rate (typ) (V/µs) 0.8 Rail-to-rail No Iq per channel (typ) (mA) 0.79 Vn at 1 kHz (typ) (nV√Hz) 8 CMRR (typ) (dB) 140 Rating Catalog Operating temperature range (°C) -40 to 85 Iout (typ) (A) 0.035 Architecture Bipolar Input common mode headroom (to negative supply) (typ) (V) 2 Input common mode headroom (to positive supply) (typ) (V) -2 Output swing headroom (to negative supply) (typ) (V) 0.5 Output swing headroom (to positive supply) (typ) (V) -1.2 THD + N at 1 kHz (typ) (%) 0.002
PDIP (N) 14 181.42 mm² (19.3 mm × 9.4 mm) SOIC (D) 14 51.9 mm² (8.65 mm × 6 mm)
  • Ultra-low offset voltage: 10 µV
  • Ultra-low drift: ±0.1 µV/°C
  • High open-loop gain: 134 dB
  • High common-mode rejection: 140 dB
  • High power-supply rejection: 130 dB
  • Low bias current: 1-nA maximum
  • Wide supply range: ±2 V to ±18 V
  • Low quiescent current: 800 µA/amplifier
  • Single, dual, and quad versions
  • Replaces OP-07, OP-77, and OP-177
  • For similar performance with ±40-V overvoltage protection, see the OPA2206
  • Ultra-low offset voltage: 10 µV
  • Ultra-low drift: ±0.1 µV/°C
  • High open-loop gain: 134 dB
  • High common-mode rejection: 140 dB
  • High power-supply rejection: 130 dB
  • Low bias current: 1-nA maximum
  • Wide supply range: ±2 V to ±18 V
  • Low quiescent current: 800 µA/amplifier
  • Single, dual, and quad versions
  • Replaces OP-07, OP-77, and OP-177
  • For similar performance with ±40-V overvoltage protection, see the OPA2206

The OPAx277 series of precision operational amplifiers replace the industry standard OP-177. The OPAx277 devices offer improved noise, wider output voltage swing, and are twice as fast with half the quiescent current. Features include ultra-low offset voltage and drift, low bias current, high common-mode rejection, and high power supply rejection.

The OPAx277 operate from ±2-V to ±18-V supplies with excellent performance. Unlike most op amps that are specified at only one supply voltage, the OPAx277 series is specified for real-world applications; a single limit applies over the ±5-V (10-V) to ±15-V (30-V) supply range. High performance is maintained as the amplifiers swing to the specified limits. Because the initial offset voltage (±20 µV, maximum) is so low, user adjustment is usually not required. However, the single version (OPA277) provides external trim pins for special applications.

The OPAx277 are easy to use and free from phase inversion and the overload problems found in some other op amps. These devices are unity-gain stable and provide excellent dynamic behavior over a wide range of load conditions. Dual and quad versions feature completely independent circuitry for lowest crosstalk and freedom from interaction, even when overdriven or overloaded.

The OPAx277 series of precision operational amplifiers replace the industry standard OP-177. The OPAx277 devices offer improved noise, wider output voltage swing, and are twice as fast with half the quiescent current. Features include ultra-low offset voltage and drift, low bias current, high common-mode rejection, and high power supply rejection.

The OPAx277 operate from ±2-V to ±18-V supplies with excellent performance. Unlike most op amps that are specified at only one supply voltage, the OPAx277 series is specified for real-world applications; a single limit applies over the ±5-V (10-V) to ±15-V (30-V) supply range. High performance is maintained as the amplifiers swing to the specified limits. Because the initial offset voltage (±20 µV, maximum) is so low, user adjustment is usually not required. However, the single version (OPA277) provides external trim pins for special applications.

The OPAx277 are easy to use and free from phase inversion and the overload problems found in some other op amps. These devices are unity-gain stable and provide excellent dynamic behavior over a wide range of load conditions. Dual and quad versions feature completely independent circuitry for lowest crosstalk and freedom from interaction, even when overdriven or overloaded.
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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 OPAx277 High-Precision Operational Amplifiers datasheet (Rev. C) PDF | HTML 2023/2/21
應用說明 Impact of Current Noise in CMOS and JFET Amplifiers PDF | HTML 2023/5/4
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 OPA277, OPA2277, OPA4277 EMI Immunity Performance (Rev. A) 2012/10/31

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

OPAx277 PSpice Model (Rev. H)

SBOM063H.ZIP (30 KB) - PSpice 模型
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模擬型號

OPAx277 TINA-TI Reference Design (Rev. G)

SBOC192G (356 KB) - TINA-TI 參考設計
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模擬型號

OPAx277 TINA-TI Spice Model (Rev. F)

SBOM271F.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。

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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
PDIP (N) 14 Ultra Librarian
SOIC (D) 14 Ultra Librarian
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