OPA4322

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四路、5.5V、20MHz、65mA 输出电流、低噪声(8.5nV/√Hz)、RRIO 运算放大器

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OPA4323 正在供货 四路、5.5V、20MHz、零交叉、低噪声 (6nV/√Hz)、RRIO 运算放大器 Faster slew rate (30 V/us), lower offset voltage (0.8 mV), lower noise (8 nV/√Hz)

产品详情

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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技术文档

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顶层文档 类型 标题 格式选项 下载最新的英语版本 日期
* 数据表 OPAx322x 20-MHz, Low-Noise, 1.8-V, RRI/O, CMOS Operational Amplifier With Shutdown 数据表 (Rev. F) PDF | HTML 2016-12-23
电子书 The Signal e-book: 有关运算放大器设计主题的博客文章汇编 PDF | HTML 英语版 PDF | HTML 2018-1-31
电子书 Analog Engineer’s Pocket Reference Guide Fifth Edition (Rev. D) PDF | HTML 2014-9-30
应用手册 OPA322, OPA2322, OPA4322 EMIR Immunity Performance 2012-11-15

设计与开发

如需其他信息或资源,请点击以下任一标题进入详情页面查看(如有)。

评估板

AMP-PDK-EVM — 放大器高性能开发套件评估模块

放大器高性能开发套件 (PDK) 是一款用于测试常见运算放大器参数的评估模块 (EVM) 套件,与大多数运算放大器和比较器均兼容。该 EVM 套件提供了一个主板,主板上具有多个插槽式子卡选项以满足封装需求,使工程师能够快速评估和验证器件性能。

AMP-PDK-EVM 套件支持五种常用的业界通用封装,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)
用户指南: PDF | HTML
支持的产品和硬件
仿真模型

OPAx322 PSpice Model (Rev. F)

SBOM888F.ZIP (30 KB) - PSpice 模型
支持的产品和硬件
仿真模型

OPAx322 TINA-TI Reference Design (Rev. C)

SBOM455C (315 KB) - TINA-TI 参考设计
支持的产品和硬件
仿真模型

OPAx322 TINA-TI Spice Model (Rev. C)

SBOM454C.ZIP (10 KB) - TINA-TI Spice 模型
支持的产品和硬件
仿真模型

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

SBOMCH9 (2170 KB) - TINA-TI 参考设计
支持的产品和硬件
仿真模型

SBOA258 TINA-TI Reference Design

SBOMAU6.ZIP (203 KB) - TINA-TI 参考设计
支持的产品和硬件
仿真模型

Simulation for Photodiode Amplifier TINA-TI Reference Design

SBOMCH8.ZIP (22 KB) - TINA-TI 参考设计
支持的产品和硬件
计算工具

ANALOG-ENGINEER-CALC — PC software analog engineer's calculator

模拟工程师计算器旨在加快模拟电路设计工程师经常运用的许多重复性计算。该基于 PC 的工具提供图形界面,其中显示各种常见计算列表,从使用反馈电阻器设置运算放大器增益到选择合适的电路设计元件,以稳定模数转换器 (ADC) 驱动器缓冲器电路。

除了可用作独立工具之外,该计算器还能很好地与模拟工程师口袋参考中所述的概念配合使用。

支持的产品和硬件
参考设计

TIDA-00208 — 使用磁通门传感器,对电流和电压进行测量的单端信号调节电路

该设计为集成在微控制器中的单端 SAR ADC 提供了一种 4 通道信号调节解决方案,用于通过磁通门传感器测量电机电流。此外,还提供了一种采用外部 SAR ADC 的备用测量电路以及用于高速过流和接地故障检测的电路。适当的信号调节提高了电机驱动中关键电流测量的防噪性能。此参考设计可有助于增加模数转换的有效分辨率,从而提高电机驱动效率。

支持的产品和硬件
参考设计

TIDA-010231 — 适用于光伏应用电弧检测的模拟前端参考设计

此参考设计实现了用于光伏系统直流电弧检测的四通道模拟前端,支持高达 1000V 的直流电压和高达 10A 的电流。通过分析太阳能电池板和逆变器之间的直流电流所存在的交流噪声,可对电弧进行检测。在使用 C2000 实时微控制器 (MCU) 进行频率分析之前,使用电流互感器采集信号,然后使用模拟滤波器级进行调节并由 16 位 ADC ADC8363 进行采样。此设计与不同的 C2000 controlCARD 兼容,因此可根据系统调整 MCU。可以使用 ADS8363 的旁路选项来评估 C2000™ MCU 的内部 ADC。C2000 软件包已在最新版本 (...)

支持的产品和硬件
参考设计

TIDM-AUTO-DC-LED-LIGHTING — 面向汽车前灯应用的多通道高密度 LED 控制

此设计采用 TMS320F2803x Piccolo 微控制器,实现了一个适用于典型汽车照明系统的高效多通道直流/直流 LED 控制系统。此设计支持多达 6 个 LED 控制通道,每个通道具有最高 1.2A 的电流驱动能力。凭借升压和降压二级电源拓扑,此系统可在 8V 至 20V 的宽输入直流电压范围内运行,非常适合汽车应用。

支持的产品和硬件
封装 引脚 CAD 符号、封装和 3D 模型
TSSOP (PW) 16 Ultra Librarian
TSSOP (PW) 14 Ultra Librarian

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