OPA4322

現行

四路、5.5-V、20-MHz、65-mA 輸出電流、低雜訊 (8.5 nV/√Hz)、RRIO 運算放大器

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OPA4323 現行 四路、5.5-V、20-MHz、零交叉低雜訊 (6 nV/√Hz) RRIO 運算放大器 Faster slew rate (30 V/us), lower offset voltage (0.8 mV), lower noise (8 nV/√Hz)

產品詳細資料

Number of channels 4 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 5.5 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 1.8 Rail-to-rail In, Out GBW (typ) (MHz) 20 Slew rate (typ) (V/µs) 10 Vos (offset voltage at 25°C) (max) (mV) 2 Iq per channel (typ) (mA) 1.4 Vn at 1 kHz (typ) (nV√Hz) 8.5 Rating Catalog Operating temperature range (°C) -40 to 125 Offset drift (typ) (µV/°C) 1.8 Features Zero Crossover Input bias current (max) (pA) 10 CMRR (typ) (dB) 100 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) 0.01 Output swing headroom (to positive supply) (typ) (V) -0.01
Number of channels 4 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 5.5 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 1.8 Rail-to-rail In, Out GBW (typ) (MHz) 20 Slew rate (typ) (V/µs) 10 Vos (offset voltage at 25°C) (max) (mV) 2 Iq per channel (typ) (mA) 1.4 Vn at 1 kHz (typ) (nV√Hz) 8.5 Rating Catalog Operating temperature range (°C) -40 to 125 Offset drift (typ) (µV/°C) 1.8 Features Zero Crossover Input bias current (max) (pA) 10 CMRR (typ) (dB) 100 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) 0.01 Output swing headroom (to positive supply) (typ) (V) -0.01
TSSOP (PW) 16 32 mm² (5 mm × 6.4 mm) TSSOP (PW) 14 32 mm² (5 mm × 6.4 mm)
  • Gain Bandwidth: 20 MHz
  • Low Noise: 8.5 nV√Hz at 1 kHz
  • Slew Rate: 10 V/µs
  • Low THD+N: 0.0005%
  • Rail-to-Rail I/O
  • Offset Voltage: 2 mV (maximum)
  • Supply Voltage: 1.8 V to 5.5 V
  • Supply Current: 1.5 mA/ch
    • Shutdown: 0.1 µA/ch
  • Unity-Gain Stable
  • Small Packages:
    • SOT-23, SON, VSSOP, TSSOP
  • Gain Bandwidth: 20 MHz
  • Low Noise: 8.5 nV√Hz at 1 kHz
  • Slew Rate: 10 V/µs
  • Low THD+N: 0.0005%
  • Rail-to-Rail I/O
  • Offset Voltage: 2 mV (maximum)
  • Supply Voltage: 1.8 V to 5.5 V
  • Supply Current: 1.5 mA/ch
    • Shutdown: 0.1 µA/ch
  • Unity-Gain Stable
  • Small Packages:
    • SOT-23, SON, VSSOP, TSSOP

The OPAx322x series consists of single, dual, and quad-channel CMOS operational amplifiers featuring low noise and rail-to-rail inputs and outputs optimized for low-power, single-supply applications. Specified over a wide supply range of 1.8 V to 5.5 V, the low quiescent current of only 1.5 mA per channel makes these devices well-suited for power-sensitive applications.

The combination of very low noise (8.5 nV√Hz at 1 kHz), high-gain bandwidth (20 MHz), and fast slew rate (10 V/µs) make the OPAx322x family ideal for a wide range of applications, including signal conditioning and sensor amplification requiring high gains. Featuring low THD+N, the OPAx322x series is also excellent for consumer audio applications, particularly for single-supply systems.

The OPAx322S models include a shutdown mode that allow the amplifiers to be switched from normal operation to a standby current that is typically less than 0.1 µA.

The OPA322 (single version) is available in 5-pin SOT-23 and 6-pin SOT-23, while the OPA2322 (dual version) is offered in 8-pin VSSOP, 10-pin VSSOP, 8-pin SOIC, and 8-pin SON packages. The quad version OPA4322 comes in 14-pin TSSOP and 16-pin TSSOP packages. All versions are specified for operation from –40°C to +125°C.

The OPAx322x series consists of single, dual, and quad-channel CMOS operational amplifiers featuring low noise and rail-to-rail inputs and outputs optimized for low-power, single-supply applications. Specified over a wide supply range of 1.8 V to 5.5 V, the low quiescent current of only 1.5 mA per channel makes these devices well-suited for power-sensitive applications.

The combination of very low noise (8.5 nV√Hz at 1 kHz), high-gain bandwidth (20 MHz), and fast slew rate (10 V/µs) make the OPAx322x family ideal for a wide range of applications, including signal conditioning and sensor amplification requiring high gains. Featuring low THD+N, the OPAx322x series is also excellent for consumer audio applications, particularly for single-supply systems.

The OPAx322S models include a shutdown mode that allow the amplifiers to be switched from normal operation to a standby current that is typically less than 0.1 µA.

The OPA322 (single version) is available in 5-pin SOT-23 and 6-pin SOT-23, while the OPA2322 (dual version) is offered in 8-pin VSSOP, 10-pin VSSOP, 8-pin SOIC, and 8-pin SON packages. The quad version OPA4322 comes in 14-pin TSSOP and 16-pin TSSOP packages. 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 OPAx322x 20-MHz, Low-Noise, 1.8-V, RRI/O, CMOS Operational Amplifier With Shutdown datasheet (Rev. F) PDF | HTML 2016/12/23
電子書 The Signal e-book: A compendium of blog posts on op amp design topics PDF | HTML 2017/3/28
電子書 Analog Engineer’s Pocket Reference Guide Fifth Edition (Rev. D) PDF | HTML 2014/9/30
應用說明 OPA322, OPA2322, OPA4322 EMIR Immunity Performance 2012/11/15

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
支援產品和硬體
模擬型號

OPAx322 PSpice Model (Rev. F)

SBOM888F.ZIP (30 KB) - PSpice 模型
支援產品和硬體
模擬型號

OPAx322 TINA-TI Reference Design (Rev. C)

SBOM455C (315 KB) - TINA-TI 參考設計
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模擬型號

OPAx322 TINA-TI Spice Model (Rev. C)

SBOM454C.ZIP (10 KB) - TINA-TI Spice 模型
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模擬型號

OPAx32x Simulation for Half-Wave Rectifier Circuit TINA-TI Reference Design

SBOMCH9 (2170 KB) - TINA-TI 參考設計
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模擬型號

SBOA258 TINA-TI Reference Design

SBOMAU6.ZIP (203 KB) - TINA-TI 參考設計
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模擬型號

Simulation for Photodiode Amplifier TINA-TI Reference Design

SBOMCH8.ZIP (22 KB) - TINA-TI 參考設計
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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-00208 — 適用於使用 Fluxgate 感測器量測電流和電壓的單端訊號調節電路

此設計提供 4 通道訊號調節解決方案,適用於整合至微控制器中的單端 SAR ADC,該微控制器使用磁通量閘門感測器測量馬達電流。另外也提供配備外部 SAR ADC 的替代量測電路,以及用於高速過電流和接地故障偵測的電路。適當的訊號調整可改善馬達驅動器關鍵電流量測的雜訊抗擾度。此參考設計可幫助提升類比轉數位轉換的有效解析度,進而提升馬達驅動效率。

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參考設計

TIDA-010231 — 適合光電應用、適用於電弧偵測的類比前端參考設計

此參考設計在光伏系統中實作四通道類比前端進行 DC 電弧偵測,支援高達 tp 1000 V 的 DC 電壓及高達 10 A 的電流。透過分析太陽能面板和逆變器間 DC 電流的 AC 雜訊,即可偵測電弧。在使用 C2000 即時微控制器 (MCU) 完成頻率分析前,訊號會由條件為類比濾波器階段的電流變壓器擷取,並由 16 位元 ADC ADC8363 取樣。此設計相容於不同 C2000 controlCARD,可將 MCU 調整至系統。可以使用 ADS8363 的旁路選項來評估 C2000™MCU 的內部 ADC。C2000 軟體套件可在最新 (...)

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參考設計

TIDM-AUTO-DC-LED-LIGHTING — 適用於汽車頭燈應用的多通道高密度 LED 控制

此設計搭載 TMS320F2803x Piccolo 微控制器,實作適合一般車用照明系統的高效率多通道 DC-DC LED 控制系統。此設計支援高達 6 通道的 LED 控制,每個通道皆具備最大 1.2A 的電流驅動能力。此系統採用升壓和降壓的兩級功率拓撲結構,能夠以 8V 至 20V 的廣泛輸入 DC 電壓運作,非常適合汽車應用。

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封裝 針腳 CAD 符號、佔位空間與 3D 模型
TSSOP (PW) 16 Ultra Librarian
TSSOP (PW) 14 Ultra Librarian

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