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可编程和可变增益放大器（PGA 和 VGA）

VCA822

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宽带、大于 40dB 增益调节范围、V/V 线性可变增益放大器

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数据表

VCA822

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数据表 立即订购

产品详情

PGA/VGA VGA Number of channels 1 Vs (min) (V) 7 Vs (max) (V) 12 BW at Acl (MHz) 150 Acl, min spec gain (V/V) 10 Features Analog Gain Set, Differential to Single-ended conversion Slew rate (typ) (V/µs) 1700 Iq per channel (typ) (mA) 36.5 Gain (max) (dB) 40 Rating Catalog Operating temperature range (°C) -40 to 85
PGA/VGA VGA Number of channels 1 Vs (min) (V) 7 Vs (max) (V) 12 BW at Acl (MHz) 150 Acl, min spec gain (V/V) 10 Features Analog Gain Set, Differential to Single-ended conversion Slew rate (typ) (V/µs) 1700 Iq per channel (typ) (mA) 36.5 Gain (max) (dB) 40 Rating Catalog Operating temperature range (°C) -40 to 85
SOIC (D) 14 51.9 mm² 8.65 x 6 VSSOP (DGS) 10 14.7 mm² 3 x 4.9
  • 150-MHz Small-Signal Bandwidth
    (G = +10 V/V)
  • 137 MHz, 5 VPP Bandwidth (G = +10 V/V)
  • 0.1-dB Gain Flatness to 28 MHz
  • 1700 V/μs Slew Rate
  • > 40-dB Gain Adjust Range
  • High Gain Accuracy: 20 dB ±0.3 dB
  • High Output Current: ±160 mA
  • 150-MHz Small-Signal Bandwidth
    (G = +10 V/V)
  • 137 MHz, 5 VPP Bandwidth (G = +10 V/V)
  • 0.1-dB Gain Flatness to 28 MHz
  • 1700 V/μs Slew Rate
  • > 40-dB Gain Adjust Range
  • High Gain Accuracy: 20 dB ±0.3 dB
  • High Output Current: ±160 mA

The VCA822 device is a DC-coupled, wideband, linear in V/V, continuously variable, voltage-controlled gain amplifier. It provides a differential input to single-ended conversion with a high-impedance gain control input used to vary the gain down 40dB from the nominal maximum gain set by the gain resistor (RG) and feedback resistor (RF).

The internal architecture of the VCA822 device consists of two input buffers and an output current feedback amplifier stage integrated with a multiplier core to provide a complete variable gain amplifier (VGA) system that does not require external buffering. The maximum gain is set externally with two resistors, providing flexibility in designs. The maximum gain is intended to be set between +2 V/V and +100 V/V. Operating from ±5-V supplies, the gain control voltage for the VCA822 device adjusts the gain linearly in V/V as the control voltage varies from +1 V to 1 V. For example, set for a maximum gain of +10 V/V, the VCA822 device provides 10 V/V, at
1-V input, to 0.1 V/V at –1 V input of gain control range. The VCA822 device offers excellent gain linearity. For a 20-dB maximum gain and a gain-control input voltage varying between 0 V and 1 V, the gain does not deviate by more than ±0.3 dB (maximum at +25°C).

 

The VCA822 device is a DC-coupled, wideband, linear in V/V, continuously variable, voltage-controlled gain amplifier. It provides a differential input to single-ended conversion with a high-impedance gain control input used to vary the gain down 40dB from the nominal maximum gain set by the gain resistor (RG) and feedback resistor (RF).

The internal architecture of the VCA822 device consists of two input buffers and an output current feedback amplifier stage integrated with a multiplier core to provide a complete variable gain amplifier (VGA) system that does not require external buffering. The maximum gain is set externally with two resistors, providing flexibility in designs. The maximum gain is intended to be set between +2 V/V and +100 V/V. Operating from ±5-V supplies, the gain control voltage for the VCA822 device adjusts the gain linearly in V/V as the control voltage varies from +1 V to 1 V. For example, set for a maximum gain of +10 V/V, the VCA822 device provides 10 V/V, at
1-V input, to 0.1 V/V at –1 V input of gain control range. The VCA822 device offers excellent gain linearity. For a 20-dB maximum gain and a gain-control input voltage varying between 0 V and 1 V, the gain does not deviate by more than ±0.3 dB (maximum at +25°C).

 
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类型 标题 下载最新的英语版本 日期
* 数据表 VCA822 Wideband, > 40-dB Gain Adjust Range, Linear in V/V Variable Gain Amplifier 数据表 (Rev. D) PDF | HTML 2015年 10月 29日
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 英语版 2018年 1月 31日
应用手册 Implementating a Variable-Length Cat5e Cable Equalizer 2010年 4月 25日
应用手册 Wireline Data Transmission and Reception 2010年 1月 27日
应用手册 所选封装材料的热学和电学性质 2008年 10月 16日

设计和开发

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

DEM-VCA-MSOP-1A — DEM-VCA-MSOP-1A

用户指南: PDF
TI.com 上无现货
评估板

DEM-VCA-SO-1B — DEM-VCA-SO-1B

用户指南: PDF
TI.com 上无现货
仿真模型

VCA822 PSpice Model (Rev. A)

SBOC290A.ZIP (45 KB) - PSpice Model
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仿真模型

VCA822 TINA-TI Reference Design (Rev. B)

SBOC289B.TSC (40 KB) - TINA-TI Reference Design
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仿真模型

VCA822 TINA-TI Spice Model (Rev. A)

SBOM315A.ZIP (11 KB) - TINA-TI Spice Model
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模拟工具

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模拟工具

TINA-TI — 基于 SPICE 的模拟仿真程序

TINA-TI 提供了 SPICE 所有的传统直流、瞬态和频域分析以及更多。TINA 具有广泛的后处理功能，允许您按照希望的方式设置结果的格式。虚拟仪器允许您选择输入波形、探针电路节点电压和波形。TINA 的原理图捕获非常直观 - 真正的“快速入门”。

TINA-TI 安装需要大约 500MB。直接安装，如果想卸载也很容易。我们相信您肯定会爱不释手。

TINA 是德州仪器 (TI) 专有的 DesignSoft 产品。该免费版本具有完整的功能，但不支持完整版 TINA 所提供的某些其他功能。

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用户指南: PDF
英语版 (Rev.A): PDF
View Options
封装 引脚 CAD 符号、封装和 3D 模型
SOIC (D) 14 Ultra Librarian
VSSOP (DGS) 10 Ultra Librarian
应遵守 TI 评估类商品的标准条款与条件。

订购和质量

包含信息：
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 鉴定摘要
  • 持续可靠性监测
包含信息：
  • 制造厂地点
  • 封装厂地点

支持和培训

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