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運算放大器 (op amps)
精密運算放大器 (Vos < 1mV)

OPA3S328

現行

具有整合增益開關的高速 (40 MHz) 高精密度 (60 µV) 低雜訊運算放大器

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產品規格表

OPA3S328

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) 0.06 Offset drift (typ) (µV/°C) 0.15 Input bias current (max) (pA) 10 GBW (typ) (MHz) 40 Features Shutdown, Small Size, Zero Crossover Slew rate (typ) (V/µs) 30 Rail-to-rail In, Out Iq per channel (typ) (mA) 3.8 Vn at 1 kHz (typ) (nV√Hz) 9.8 CMRR (typ) (dB) 120 Rating Catalog Operating temperature range (°C) -40 to 125 Iout (typ) (A) 0.063 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) 0.005 Output swing headroom (to positive supply) (typ) (V) -0.005 THD + N at 1 kHz (typ) (%) 0.00017
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) 0.06 Offset drift (typ) (µV/°C) 0.15 Input bias current (max) (pA) 10 GBW (typ) (MHz) 40 Features Shutdown, Small Size, Zero Crossover Slew rate (typ) (V/µs) 30 Rail-to-rail In, Out Iq per channel (typ) (mA) 3.8 Vn at 1 kHz (typ) (nV√Hz) 9.8 CMRR (typ) (dB) 120 Rating Catalog Operating temperature range (°C) -40 to 125 Iout (typ) (A) 0.063 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) 0.005 Output swing headroom (to positive supply) (typ) (V) -0.005 THD + N at 1 kHz (typ) (%) 0.00017
VQFN (RGR) 20 12.25 mm² (3.5 mm × 3.5 mm) DSBGA (YBJ) 24 4 mm² (2 mm × 2 mm)
  • Precision operational amplifier with integrated switches for transimpedance applications
  • Wide bandwidth: 40 MHz
  • Low offset voltage: 60 µV (max)
  • Very low offset drift: 1 µV/°C (max)
  • Low input bias current: 0.2 pA
  • Rail-to-rail input and output
  • Zero-crossover input stage
  • Low voltage noise: 6.1 nV/√Hz at 10 kHz
  • Low current noise: 0.125 pA/√Hz at 10 kHz
  • Low leakage switches: 10 pA
  • Slew rate: 30 V/µs
  • Quiescent current: 3.8 mA per channel
  • Current in shutdown mode: 30 µA
  • Output impedance in shutdown mode: 100 GΩ
  • Single-supply voltage range: 2.2 V to 5.5 V
  • Unity-gain stable
  • Small packages:
    • 20-lead, 3.5-mm x 3.5-mm VQFN
    • 2.0-mm x 2.0-mm DSBGA
  • Precision operational amplifier with integrated switches for transimpedance applications
  • Wide bandwidth: 40 MHz
  • Low offset voltage: 60 µV (max)
  • Very low offset drift: 1 µV/°C (max)
  • Low input bias current: 0.2 pA
  • Rail-to-rail input and output
  • Zero-crossover input stage
  • Low voltage noise: 6.1 nV/√Hz at 10 kHz
  • Low current noise: 0.125 pA/√Hz at 10 kHz
  • Low leakage switches: 10 pA
  • Slew rate: 30 V/µs
  • Quiescent current: 3.8 mA per channel
  • Current in shutdown mode: 30 µA
  • Output impedance in shutdown mode: 100 GΩ
  • Single-supply voltage range: 2.2 V to 5.5 V
  • Unity-gain stable
  • Small packages:
    • 20-lead, 3.5-mm x 3.5-mm VQFN
    • 2.0-mm x 2.0-mm DSBGA

The OPA3S328 is a precision, low-voltage, CMOS operational amplifier (op amp) with integrated switches that are optimized for flexible transimpedance applications. Low input bias current and low input capacitance allows for high-frequency transimpedance gains at low photocurrent operation (< 1 nA). The integrated switches, low offset, and rail-to-rail output performance of the OPA3S328 enable high accuracy across multiple decades of current values. Small packages, along with integrated switches, allow for selectable transimpedance gains and help reduce size for space-constrained applications.

The OPA3S328 features zero-crossover input technology, giving the flexibility for the input common-mode range to span the full supply range without offset deviations. The device provides enable-disable capability to allow for portable, handheld applications in test and measurement. When disabled, the OPA3S328 output impedance is typically 100 GΩ, allowing for wired-OR applications using multiple transimpedance channels.

The OPA3S328 is a precision, low-voltage, CMOS operational amplifier (op amp) with integrated switches that are optimized for flexible transimpedance applications. Low input bias current and low input capacitance allows for high-frequency transimpedance gains at low photocurrent operation (< 1 nA). The integrated switches, low offset, and rail-to-rail output performance of the OPA3S328 enable high accuracy across multiple decades of current values. Small packages, along with integrated switches, allow for selectable transimpedance gains and help reduce size for space-constrained applications.

The OPA3S328 features zero-crossover input technology, giving the flexibility for the input common-mode range to span the full supply range without offset deviations. The device provides enable-disable capability to allow for portable, handheld applications in test and measurement. When disabled, the OPA3S328 output impedance is typically 100 GΩ, allowing for wired-OR applications using multiple transimpedance channels.
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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 OPA3S328 40-MHz, Dual, Precision, Low-Noise, Low-Input-Bias-Current CMOS Operational Amplifier With Integrated Switches datasheet (Rev. D) PDF | HTML 2023/12/15
應用說明 Amplifier Input Common-Mode and Output-Swing Limitations PDF | HTML 2022/1/14
技術文章 How can I achieve accurate gain error and drift with a switched-gain transimpedanc PDF | HTML 2021/10/14
應用說明 Build a Programmable Gain Transimpedance Amplifiers Using the OPA3S328 PDF | HTML 2021/5/12
電子書 An Engineer’s Guide to Designing with Precision Amplifiers 2021/4/29
證書 OPA3S328EVM EU RoHS Declaration of Conformity (DoC) 2020/11/19

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

OPA3S328EVM — 適用高速 (40 MHz) 高精密度 (60 µV) 低雜訊運算放大器的 OPA3S328 評估模組

 OPA3S328 評估模組 (EVM) 設計旨在提供 OPA3S328 功能存取及性能測量。TOPA3S328 是一款精密低電壓 CMOS 運算放大器，配備整合式開關，適合靈活的轉阻應用。 

使用指南: PDF | HTML
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模擬型號

Discrete Impedance Spectroscopy TINA-TI Reference Design (Single-Ended)

SBOMBM1 (1083 KB) - TINA-TI 參考設計
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模擬型號

OPA3S328 PSPICE Model (Rev. B)

SBOMBI7B.ZIP (42 KB) - PSpice 模型
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模擬型號

OPA3S328 SPICE Model (Generic)

SBOMCK3.ZIP (7 KB) - TINA-TI Spice 模型
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模擬型號

OPA3S328 TINA-TI Reference Design (Rev. A)

SBOMBI8A (688 KB) - TINA-TI 參考設計
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模擬型號

OPA3S328 TINA-TI Spice Model (Rev. A)

SBOMBI6A.ZIP (15 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
VQFN (RGR) 20 Ultra Librarian
DSBGA (YBJ) 24 Ultra Librarian
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