OPA320

現行

精密零交越 20-MHz、0.9-pA Ib、RRIO、CMOS 運算放大器

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產品規格表

document-pdfAcrobat OPAx320x Precision, 20-MHz, 0.9-pA, Low-Noise, RRIO, CMOS Operational Amplifier With Shutdown datasheet (Rev. F) (英文) PDF | HTML

OPA320

現行

產品規格表

立即訂購

產品詳細資料

Number of channels

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

Vos (offset voltage at 25°C) (max) (mV)

0.15

Offset drift (typ) (µV/°C)

1.5

Input bias current (max) (pA)

0.9

GBW (typ) (MHz)

Features

EMI Hardened, Shutdown, Zero Crossover

Slew rate (typ) (V/µs)

Rail-to-rail

In, Out

Iq per channel (typ) (mA)

1.45

Vn at 1 kHz (typ) (nV√Hz)

8.5

CMRR (typ) (dB)

114

Rating

Catalog

Operating temperature range (°C)

-40 to 125

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

THD + N at 1 kHz (typ) (%)

0.0005

Number of channels

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

Vos (offset voltage at 25°C) (max) (mV)

0.15

Offset drift (typ) (µV/°C)

1.5

Input bias current (max) (pA)

0.9

GBW (typ) (MHz)

Features

EMI Hardened, Shutdown, Zero Crossover

Slew rate (typ) (V/µs)

Rail-to-rail

In, Out

Iq per channel (typ) (mA)

1.45

Vn at 1 kHz (typ) (nV√Hz)

8.5

CMRR (typ) (dB)

114

Rating

Catalog

Operating temperature range (°C)

-40 to 125

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

THD + N at 1 kHz (typ) (%)

0.0005

SOT-23 (DBV)

8.12 mm² (2.9 mm × 2.8 mm)

SOT-23 (DBV)

8.12 mm² (2.9 mm × 2.8 mm)

Precision with Zero-Crossover Distortion:
- Low Offset Voltage: 150 µV (Maximum)
- High CMRR: 114 dB
- Rail-to-Rail I/O
Low Input Bias Current: 0.9 pA (Maximum)
Low Noise: 7 nV/√Hz at 10 kHz
Wide Bandwidth: 20 MHz
Slew Rate: 10 V/µs
Quiescent Current: 1.45 mA/Ch
Single-Supply Voltage Range: 1.8 V to 5.5 V
OPA320S and OPA2320S:
- IQ in Shutdown Mode: 0.1 µA
Unity-Gain Stable
Small Packages:
- SOT-23, VSSOP, SON, and SOIC

Precision with Zero-Crossover Distortion:
- Low Offset Voltage: 150 µV (Maximum)
- High CMRR: 114 dB
- Rail-to-Rail I/O
Low Input Bias Current: 0.9 pA (Maximum)
Low Noise: 7 nV/√Hz at 10 kHz
Wide Bandwidth: 20 MHz
Slew Rate: 10 V/µs
Quiescent Current: 1.45 mA/Ch
Single-Supply Voltage Range: 1.8 V to 5.5 V
OPA320S and OPA2320S:
- IQ in Shutdown Mode: 0.1 µA
Unity-Gain Stable
Small Packages:
- SOT-23, VSSOP, SON, and SOIC

The OPA320 (single) and OPA2320 (dual) are a new generation of precision, low-voltage CMOS operational amplifiers optimized for very low noise and wide bandwidth while operating on a low quiescent current of only 1.45 mA.

The OPA320 series is ideal for low-power, single- supply applications. Low-noise (7 nV/√Hz) and high- speed operation also make them well-suited for driving sampling analog-to-digital converters (ADCs). Other applications include signal conditioning and sensor amplification.

The OPA320 features a linear input stage with zero- crossover distortion that delivers excellent common- mode rejection ratio (CMRR) of typically 114 dB over the full input range. The input common mode range extends 100 mV beyond the negative and positive supply rails. The output voltage typically swings within 10 mV of the rails.

In addition, the OPAx320 has a wide supply voltage range from 1.8 V to 5.5 V with excellent PSRR (106 dB) over the entire supply range, making them suitable for precision, low-power applications that run directly from batteries without regulation.

The OPA320 (single version) is available in a 5-pin SOT23 package; the OPA320S shutdown single version is available in an 6-pin SOT23 package. The dual OPA2320 is offered in 8-pin SOIC, VSSOP, and SON packages, and the OPA2320S (dual with shutdown) in a 10-pin VSSOP package.

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OPA325

現行

低雜訊 (10nV/rtHz)、高頻寬 (10MHz)、低功耗 (0.65mA)、零交越運算放大器 Lower power CMOS amplifier with rail-to-rail input and output

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具 RRIO 的高電壓飛安培輸入偏壓精密 e-trim™ 運算放大器 e-trim™ operational amplifier with higher supply voltage (16 V), higher precision and lower power

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現行

精密、零交越、50μV 補償電壓、40MHz 高頻寬 RRIO CMOS運算放大器 Double the bandwidth with lower offset and drift

針腳對針腳的功能與所比較的裝置相同。

OPA392

現行

單路、低偏移 (10 μV)、低雜訊 (4.4 nV/rtHz @10kHz) 飛安培偏壓電流 e-trim™ 運算放大器 For slightly lower BW with improved noise and offset see the OPA392.

功能相同，但針腳輸出與所比較的裝置不同。

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 For wider BW, lower noise, lower offset and integrated switches see the OPA3S328.

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重要文件	類型	標題	格式選項	日期
*	資料表	OPAx320x Precision, 20-MHz, 0.9-pA, Low-Noise, RRIO, CMOS Operational Amplifier With Shutdown datasheet (Rev. F)	PDF \| HTML	2016/12/16
	Application brief	Why Use an FDA to Drive an ADC?	PDF \| HTML	2026/1/8
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	Circuit design	High-voltage battery monitor circuit: ±20V, 0–10kHz, 18-bit fully differential (Rev. B)	PDF \| HTML	2024/9/11
	Circuit design	Charge pump circuit (–0.3V) for negative amplifier supply (Rev. A)	PDF \| HTML	2024/8/21
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	Product overview	Bridge Sensor Solution (Rev. A)	PDF \| HTML	2023/1/27
	電子書	An Engineer’s Guide to Designing with Precision Amplifiers		2021/4/29
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	Application brief	EMI-Hardened Op Amps Reduce Errors in Infusion Pumps (Rev. A)		2019/8/21
	Circuit design	Difference amplifier (subtractor) circuit (Rev. A)	PDF \| HTML	2019/1/31
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	白皮書	Charging stations: Toward an EV support infrastructure		2017/5/9
	電子書	The Signal e-book: A compendium of blog posts on op amp design topics	PDF \| HTML	2017/3/28
	技術文章	Pile on to a charger – my EV needs power	PDF \| HTML	2016/12/20
	設計指南	Software Pacemaker Detection Design Guide		2015/12/3
	電子書	Analog Engineer’s Pocket Reference Guide Fifth Edition (Rev. D)	PDF \| HTML	2014/9/30
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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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開發板

PLABS-SAR-EVM-PDK — TI Precision Labs SAR ADC 評估模組性能展示套件 (PDK)

PLABS-SAR-EVM-PDK 是一款實驗平台，需與 TI Precision Labs 影片配合使用，可幫助深入理解漸近法暫存器 (SAR) 類比轉數位轉換器 (ADC) 電路。此評估模組 (EVM) 平台包含兩個通道的常見 SAR ADC 電路，可輕鬆連接至精密訊號注入器評估模組 (PSIEVM)，該模組能提供低失真、低雜訊的輸入訊號來驅動 SAR ADC；第三個通道則設計用於展示超低功耗 ADC 在不同吞吐量下的功耗變化。該 EVM 平台還包含 10 塊可安裝於主機板上的試樣卡，用於展示不同前端驅動電路對性能的影響。

PLABS-SAR-EVM-PDK 使用者指南提供了 EVM (...)

使用指南: PDF

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TIEVM-VIENNARECT — 使用 C2000™ MCU 且基於 Vienna 整流器的三相功率因數校正評估模組

Vienna 整流器電源拓撲用於高功率三相功率因數 (AC-DC) 應用，如板外電動車 (EV) 充電器和電信整流器。此設計說明了使用 C2000™ MCU 控制功率級的方法。此設計使用 HSEC180 controlCARD 介面，且軟體支援 MCU 的 F2837x 或 F2838x 和 F28004x 系列。

進一步了解 C2000 MCU 可為電動車應用提供哪些功能。

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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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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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設計工具

CIRCUIT060016 — 非反向麥克風前置放大器電路

此電路使用非反相放大器電路配置來放大麥克風輸出訊號。此電路擁有非常好的幅度平坦度，且在音訊頻率範圍內表現較小的頻率響應偏差。此電路設計採用單 5-V 電源運作。

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CIRCUIT060024 — 差分放大器 (減法器) 電路

此設計輸入 Vi1 和 Vi2 兩個訊號，並輸出其差值 (相減)。輸入訊號通常來自低阻抗源，因為此電路的輸入阻抗由電阻網路決定。差動放大器通常用於放大差動輸入訊號和抑制共模電壓。共模電壓是兩個輸入端的共同電壓。差動放大器抑制共模訊號能力的有效性稱為共模拒斥比 (CMRR)。差動放大器的 CMRR 主要取決於電阻器公差。

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設計工具