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運算放大器 (op amps)
精密運算放大器 (Vos < 1mV)

OPA2378

現行

雙、低雜訊、900kHz、RRIO、精密運算放大器、零漂移系列

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產品規格表

OPA2378

現行
產品規格表 立即訂購

產品詳細資料

Number of channels 2 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 5.5 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 2.2 Vos (offset voltage at 25°C) (max) (mV) 0.05 Offset drift (typ) (µV/°C) 0.1 Input bias current (max) (pA) 550 GBW (typ) (MHz) 0.9 Features EMI Hardened, Zero Drift Slew rate (typ) (V/µs) 0.4 Rail-to-rail In, Out Iq per channel (typ) (mA) 0.125 Vn at 1 kHz (typ) (nV√Hz) 20 CMRR (typ) (dB) 112 Rating Catalog Operating temperature range (°C) -40 to 125 Iout (typ) (A) 0.03 Architecture CMOS Input common mode headroom (to negative supply) (typ) (V) -0.05 Input common mode headroom (to positive supply) (typ) (V) 0.05 Output swing headroom (to negative supply) (typ) (V) 0.006 Output swing headroom (to positive supply) (typ) (V) -0.006 THD + N at 1 kHz (typ) (%) 0.003
Number of channels 2 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 5.5 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 2.2 Vos (offset voltage at 25°C) (max) (mV) 0.05 Offset drift (typ) (µV/°C) 0.1 Input bias current (max) (pA) 550 GBW (typ) (MHz) 0.9 Features EMI Hardened, Zero Drift Slew rate (typ) (V/µs) 0.4 Rail-to-rail In, Out Iq per channel (typ) (mA) 0.125 Vn at 1 kHz (typ) (nV√Hz) 20 CMRR (typ) (dB) 112 Rating Catalog Operating temperature range (°C) -40 to 125 Iout (typ) (A) 0.03 Architecture CMOS Input common mode headroom (to negative supply) (typ) (V) -0.05 Input common mode headroom (to positive supply) (typ) (V) 0.05 Output swing headroom (to negative supply) (typ) (V) 0.006 Output swing headroom (to positive supply) (typ) (V) -0.006 THD + N at 1 kHz (typ) (%) 0.003
SOT-23 (DCN) 8 4.64 mm² (2.9 mm × 1.6 mm)
  • LOW NOISE
    • 0.4µVPP, 0.1Hz to 10Hz
    • 20nV/√Hz at 1kHz
  • ZERØ-DRIFT SERIES
    • LOW OFFSET VOLTAGE: 20µV
    • LOW OFFSET DRIFT: 0.1µV/°C
  • QUIESCENT CURRENT: 125µA
  • GAIN BANDWIDTH: 900kHz
  • RAIL-TO-RAIL INPUT/OUTPUT
  • EMI FILTERING
  • SUPPLY VOLTAGE: 2.2V to 5.5V
  • microSIZE PACKAGES: SC70 and SOT23
  • APPLICATIONS
    • PORTABLE MEDICAL DEVICES
      • GLUCOSE METERS
      • OXYGEN METERING
      • HEART RATE MONITORS
    • WEIGH SCALES
    • BATTERY-POWERED INSTRUMENTS
    • THERMOPILE MODULES
    • HANDHELD TEST EQUIPMENT
    • SENSOR SIGNAL CONDITIONING

All trademarks are the property of their respective owners.
  • LOW NOISE
    • 0.4µVPP, 0.1Hz to 10Hz
    • 20nV/√Hz at 1kHz
  • ZERØ-DRIFT SERIES
    • LOW OFFSET VOLTAGE: 20µV
    • LOW OFFSET DRIFT: 0.1µV/°C
  • QUIESCENT CURRENT: 125µA
  • GAIN BANDWIDTH: 900kHz
  • RAIL-TO-RAIL INPUT/OUTPUT
  • EMI FILTERING
  • SUPPLY VOLTAGE: 2.2V to 5.5V
  • microSIZE PACKAGES: SC70 and SOT23
  • APPLICATIONS
    • PORTABLE MEDICAL DEVICES
      • GLUCOSE METERS
      • OXYGEN METERING
      • HEART RATE MONITORS
    • WEIGH SCALES
    • BATTERY-POWERED INSTRUMENTS
    • THERMOPILE MODULES
    • HANDHELD TEST EQUIPMENT
    • SENSOR SIGNAL CONDITIONING

All trademarks are the property of their respective owners.

The OPA378 and OPA2378 represent a new generation of Zerø-Drift, microPOWER operational amplifiers that use a proprietary auto-calibration technique to provide minimal input offset voltage (20µV) and offset voltage drift (0.1µV/°C). The combination of low input voltage noise, high gain bandwidth (900kHz), and low power (150µA max) enable these devices to achieve optimum performance for low-power precision applications. In addition, the excellent PSRR performance, coupled with a wide input supply range of 2.2V to 5.5V and rail-to-rail input and output, makes it an outstanding choice for single-supply applications that run directly from batteries without regulation.

The OPA378 (single version) is available in both a microSIZE SC70-5 and a SOT23-5 package. The OPA2378 (dual version) is offered in a SOT23-8 package. All versions are specified for operation from –40°C to +125°C.

The OPA378 and OPA2378 represent a new generation of Zerø-Drift, microPOWER operational amplifiers that use a proprietary auto-calibration technique to provide minimal input offset voltage (20µV) and offset voltage drift (0.1µV/°C). The combination of low input voltage noise, high gain bandwidth (900kHz), and low power (150µA max) enable these devices to achieve optimum performance for low-power precision applications. In addition, the excellent PSRR performance, coupled with a wide input supply range of 2.2V to 5.5V and rail-to-rail input and output, makes it an outstanding choice for single-supply applications that run directly from batteries without regulation.

The OPA378 (single version) is available in both a microSIZE SC70-5 and a SOT23-5 package. The OPA2378 (dual version) is offered in a SOT23-8 package. All versions are specified for operation 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 OPA378, OPA2378 Low-Noise, 900kHz, RRIO, Precision Op Amp Zero-Drift Series datasheet (Rev. D) 2009/10/22
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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模擬型號

OPAx378 PSpice Model (Rev. E)

SBOM392E.ZIP (34 KB) - PSpice 模型
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模擬型號

OPAx378 TINA-TI Reference Design (Rev. E)

SBOM391E (320 KB) - TINA-TI 參考設計
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模擬型號

OPAx378 TINA-TI Spice Model (Rev. E)

SBOM390E.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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SOT-23 (DCN) 8 Ultra Librarian
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