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可编程和可变增益放大器（PGA 和 VGA）

PGA870

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高速全差分可编程增益放大器

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数据表

PGA870

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数据表 立即订购

米6体育平台手机版_好二三四详情

Features Digital Gain Set, Shutdown, Single-ended to Differential conversion PGA/VGA PGA Number of channels 1 Vs (max) (V) 5.25 Vs (min) (V) 4.75 BW at Acl (MHz) 650 Acl, min spec gain (V/V) 0.27 Slew rate (typ) (V/µs) 2900 Iq per channel (typ) (mA) 143 Gain (max) (dB) 20 Rating Catalog Architecture Fully Differential ADC Driver Operating temperature range (°C) -40 to 85
Features Digital Gain Set, Shutdown, Single-ended to Differential conversion PGA/VGA PGA Number of channels 1 Vs (max) (V) 5.25 Vs (min) (V) 4.75 BW at Acl (MHz) 650 Acl, min spec gain (V/V) 0.27 Slew rate (typ) (V/µs) 2900 Iq per channel (typ) (mA) 143 Gain (max) (dB) 20 Rating Catalog Architecture Fully Differential ADC Driver Operating temperature range (°C) -40 to 85
VQFN (RHD) 28 25 mm² 5 x 5
  • Wideband +5-V Operation: 650-MHz Bandwidth
  • Low Impedance, Voltage Mode Output
  • Wide Gain Range: –11.5 dB to +20 dB
  • Precise 0.5-dB Gain Steps
    Step-to-Step Gain Error = ±0.03 dB
  • HD2: –93 dBc at 100 MHz
  • HD3: –88 dBc at 100 MHz
  • IMD3: –98 dBc at 100 MHz, –95 dBc at 200 MHz
  • OIP3: +47 dBm at 100 MHz;
    Exceeds +45 dBm for Frequencies to 300 MHz
  • Flexible Gain Control Interface:
    • Supports latched and unlatched options
    • Gain may be set in power-down state
    • Fast setup and hold times: 2.5 ns
  • Low Disable Current: 2 mA
  • Pb-Free (RoHS-Compliant) and Green Package
  • APPLICATIONS
    • Programmable Gain IF Amplifier:
      • Differential signal chains
      • Single-ended to differential conversion
    • Fast Gain Control Loops for:
      • Test/measurement
      • Digital radio signal chains
    • ADC Driver for Wireless Base Station Signal Chains: GSM, WCDMA, MC-GSM
    • Radar/Ranging Systems

    PowerPAD is a trademark of Texas Instruments.
    All other trademarks are the property of their respective owners.
  • Wideband +5-V Operation: 650-MHz Bandwidth
  • Low Impedance, Voltage Mode Output
  • Wide Gain Range: –11.5 dB to +20 dB
  • Precise 0.5-dB Gain Steps
    Step-to-Step Gain Error = ±0.03 dB
  • HD2: –93 dBc at 100 MHz
  • HD3: –88 dBc at 100 MHz
  • IMD3: –98 dBc at 100 MHz, –95 dBc at 200 MHz
  • OIP3: +47 dBm at 100 MHz;
    Exceeds +45 dBm for Frequencies to 300 MHz
  • Flexible Gain Control Interface:
    • Supports latched and unlatched options
    • Gain may be set in power-down state
    • Fast setup and hold times: 2.5 ns
  • Low Disable Current: 2 mA
  • Pb-Free (RoHS-Compliant) and Green Package
  • APPLICATIONS
    • Programmable Gain IF Amplifier:
      • Differential signal chains
      • Single-ended to differential conversion
    • Fast Gain Control Loops for:
      • Test/measurement
      • Digital radio signal chains
    • ADC Driver for Wireless Base Station Signal Chains: GSM, WCDMA, MC-GSM
    • Radar/Ranging Systems

    PowerPAD is a trademark of Texas Instruments.
    All other trademarks are the property of their respective owners.

The PGA870 is a wideband programmable-gain amplifier (PGA) for high-speed signal chain and data acquisition systems. The PGA870 has been optimized to provide high bandwidth, low distortion, and low noise, making it ideally suited as a 14-bit analog-to-digital converter (ADC) driver for wireless base station signal chain applications. The wide gain range of –11.5 dB to +20 dB can be adjusted in 0.5-dB gain steps through a 6-bit control word applied to the parallel interface. The gain control interface may be configured as a level-triggered latch or an edge-triggered latch, or it may be placed in an unlatched (transparent) mode. In addition to the 6-bit gain control, the PGA870 contains a power-down pin (PD) that can be used to put the device into a low-current, power-down mode. In this mode, the quiescent current drops to 2 mA, but the gain control circuitry remains active, allowing the gain of the PGA870 to be set before device power-up. The PGA870 is offered in a QFN-28 PowerPAD™ package.

The PGA870 is a wideband programmable-gain amplifier (PGA) for high-speed signal chain and data acquisition systems. The PGA870 has been optimized to provide high bandwidth, low distortion, and low noise, making it ideally suited as a 14-bit analog-to-digital converter (ADC) driver for wireless base station signal chain applications. The wide gain range of –11.5 dB to +20 dB can be adjusted in 0.5-dB gain steps through a 6-bit control word applied to the parallel interface. The gain control interface may be configured as a level-triggered latch or an edge-triggered latch, or it may be placed in an unlatched (transparent) mode. In addition to the 6-bit gain control, the PGA870 contains a power-down pin (PD) that can be used to put the device into a low-current, power-down mode. In this mode, the quiescent current drops to 2 mA, but the gain control circuitry remains active, allowing the gain of the PGA870 to be set before device power-up. The PGA870 is offered in a QFN-28 PowerPAD™ package.
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类型 标题 下载最新的英语版本 日期
* 数据表 High-Speed, Fully Differential, Programmable Gain Amplifier 数据表 (Rev. A) 2011年 2月 15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
用户指南 TSW3725 Evaluation Module 2011年 10月 25日
EVM 用户指南 PGA870EVM User Guide (Rev. A) 2010年 2月 3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

PGA870EVM — PGA870 评估模块

PGA870EVM 是 PGA870 宽带可编程增益放大器 (PGA) 的评估模块 (EVM)，适用于高速信号链和数据采集系统。

PGA870EVM 可评估 PGA870 器件的所有方面。用户手册文档中包含了完整的电路描述、原理图和物料清单 (BOM)。

用户指南: PDF
TI.com 上无现货
评估板

TSW3085EVM — 宽带发送信号链评估板和参考设计

TSW3085 评估模块为电路板，可允许系统设计人员借助 LMK04806B（美国国家半导体的正式米6体育平台手机版_好二三四）低噪声时钟发生器/抖动消除器，评估米6体育平台手机版_好二三四 (TI) 发射信号链的总性能。作为易于使用的完整射频发射解决方案，TSW3085EVM 包含用于为 DAC3482 数模转换器 (DAC) 以及 TRF3705 计时的 LMK04806B，可将来自 DAC 的 I/Q 输出向上变频为射频载体。

DAC3482 是双通道、超低功耗 16 位 1.25 GSPS DAC。

TRF3705 是高性能复数射频调制器，输出范围为 300 MHz 至 4 GHz。

LMK04806B (...)

用户指南: PDF
TI.com 上无现货
仿真模型

PGA870 PSpice Model (Rev. A)

SLOM170A.ZIP (80 KB) - PSpice Model
下载
仿真模型

PGA870 TINA-TI Reference Design

SLOM168.TSC (115 KB) - TINA-TI Reference Design
下载
仿真模型

PGA870 TINA-TI Spice Model

SLOM169.ZIP (65 KB) - TINA-TI Spice Model
下载
模拟工具

PSPICE-FOR-TI — 适用于 TI 设计和模拟工具的 PSpice®

PSpice® for TI 可提供帮助评估模拟电路功能的设计和仿真环境。此功能齐全的设计和仿真套件使用 Cadence® 的模拟分析引擎。PSpice for TI 可免费使用，包括业内超大的模型库之一，涵盖我们的模拟和电源米6体育平台手机版_好二三四系列以及精选的模拟行为模型。

借助 PSpice for TI 的设计和仿真环境及其内置的模型库，您可对复杂的混合信号设计进行仿真。创建完整的终端设备设计和原型解决方案，然后再进行布局和制造，可缩短米6体育平台手机版_好二三四上市时间并降低开发成本。

在 PSpice for TI 设计和仿真工具中，您可以搜索 TI (...)



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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 是米6体育平台手机版_好二三四 (TI) 专有的 DesignSoft 米6体育平台手机版_好二三四。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。

如需获取可用 TINA-TI 模型的完整列表，请参阅：SpiceRack - 完整列表 

需要 HSpice (...)

用户指南: PDF
英语版 (Rev.A): PDF
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封装 引脚 CAD 符号、封装和 3D 模型
VQFN (RHD) 28 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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