主页 放大器 可编程和可变增益放大器（PGA 和 VGA）
主页
放大器
可编程和可变增益放大器（PGA 和 VGA）

LMH6514

正在供货

具有 6.02dB 步进的 600MHz 数字控制、可变增益放大器

立即订购
数据表

LMH6514

正在供货
数据表 立即订购

产品详情

PGA/VGA VGA Number of channels 1 Vs (min) (V) 4 Vs (max) (V) 5.25 Input type Differential Output type Differential Interface type Digital Gain Set BW at Acl (MHz) 600 Acl, min spec gain (V/V) 0.25 Voltage gain (min) (V/V) 0.25 Voltage gain (max) (V/V) 32 Gain (max) (dB) 30 Architecture Fully Differential ADC Driver Features Single-ended to Differential conversion Input voltage noise (typ) (µV√Hz) 1800 Slew rate (typ) (V/µs) 1600 Iq per channel (typ) (mA) 107 Rating Catalog Operating temperature range (°C) -40 to 85
PGA/VGA VGA Number of channels 1 Vs (min) (V) 4 Vs (max) (V) 5.25 Input type Differential Output type Differential Interface type Digital Gain Set BW at Acl (MHz) 600 Acl, min spec gain (V/V) 0.25 Voltage gain (min) (V/V) 0.25 Voltage gain (max) (V/V) 32 Gain (max) (dB) 30 Architecture Fully Differential ADC Driver Features Single-ended to Differential conversion Input voltage noise (typ) (µV√Hz) 1800 Slew rate (typ) (V/µs) 1600 Iq per channel (typ) (mA) 107 Rating Catalog Operating temperature range (°C) -40 to 85
WQFN (RGH) 16 16 mm² 4 x 4
  • Adjustable Gain with a 42 dB Range
  • Precise 6.02 dB Gain Steps
  • Parallel 3 Bit Gain Control
  • On Chip Register Gain Setting
  • Fully Differential Signal Path
  • Single Ended to Differential Capable
  • 200Ω Input Impedance
  • Small Footprint (4 mm x 4 mm) WQFN Package

Key Specifications

  • 600 MHz bandwidth at 100Ω load
  • 39 dBm OIP3 at 75 MHz, 200Ω load
  • 26 dB to 38 dB maximum gain
  • Selectable output impedance of 200Ω or 400Ω.
  • 8.3 dB noise figure
  • 5 ns gain step switching time
  • 100 mA supply current

All trademarks are the property of their respective owners.

  • Adjustable Gain with a 42 dB Range
  • Precise 6.02 dB Gain Steps
  • Parallel 3 Bit Gain Control
  • On Chip Register Gain Setting
  • Fully Differential Signal Path
  • Single Ended to Differential Capable
  • 200Ω Input Impedance
  • Small Footprint (4 mm x 4 mm) WQFN Package

Key Specifications

  • 600 MHz bandwidth at 100Ω load
  • 39 dBm OIP3 at 75 MHz, 200Ω load
  • 26 dB to 38 dB maximum gain
  • Selectable output impedance of 200Ω or 400Ω.
  • 8.3 dB noise figure
  • 5 ns gain step switching time
  • 100 mA supply current

All trademarks are the property of their respective owners.

The LMH6514 is a high performance, digitally controlled variable gain amplifier (DVGA). It combines precision gain control with a low noise, ultra-linear, differential amplifier. Typically, the LMH6514 drives a high performance ADC in a broad range of mixed signal and digital communication applications such as mobile radio and cellular base stations where automatic gain control (AGC) is required to increase system dynamic range. When used in conjunction with a high speed ADC, system dynamic range can be extended by up to 42 dB.

The LMH6514 has a differential input and output allowing large signal swings on a single 5V supply. It is designed to accept signals from RF elements and maintain a terminated impedance environment. The input impedance is 200Ω resistive. The output impedance is either 200Ω or 400Ω and is user selectable. A unique internal architecture allows use with both single ended and differential input signals.

Input signals to the LMH6514 are scaled by a highly linear, digitally controlled attenuator with seven accurate 6 dB steps. The attenuator output provides the input signal for a high gain, ultra linear differential transconductor. The transconductor differential output current can be converted into a voltage by using the on-chip 200Ω or 400Ω loads. The transconductance gain is 0.1 Amp/Volt resulting in a maximum voltage gain of +32 dB when driving a 200Ω load, or 38 dB when driving the 400Ω load.

The LMH6514 operates over the industrial temperature range of −40°C to +85°C. The LMH6514 is available in a 16-Pin, thermally enhanced, WQFN package.

The LMH6514 is a high performance, digitally controlled variable gain amplifier (DVGA). It combines precision gain control with a low noise, ultra-linear, differential amplifier. Typically, the LMH6514 drives a high performance ADC in a broad range of mixed signal and digital communication applications such as mobile radio and cellular base stations where automatic gain control (AGC) is required to increase system dynamic range. When used in conjunction with a high speed ADC, system dynamic range can be extended by up to 42 dB.

The LMH6514 has a differential input and output allowing large signal swings on a single 5V supply. It is designed to accept signals from RF elements and maintain a terminated impedance environment. The input impedance is 200Ω resistive. The output impedance is either 200Ω or 400Ω and is user selectable. A unique internal architecture allows use with both single ended and differential input signals.

Input signals to the LMH6514 are scaled by a highly linear, digitally controlled attenuator with seven accurate 6 dB steps. The attenuator output provides the input signal for a high gain, ultra linear differential transconductor. The transconductor differential output current can be converted into a voltage by using the on-chip 200Ω or 400Ω loads. The transconductance gain is 0.1 Amp/Volt resulting in a maximum voltage gain of +32 dB when driving a 200Ω load, or 38 dB when driving the 400Ω load.

The LMH6514 operates over the industrial temperature range of −40°C to +85°C. The LMH6514 is available in a 16-Pin, thermally enhanced, WQFN package.
filter 查找其他 可编程和可变增益放大器（PGA 和 VGA）
下载 观看带字幕的视频 视频

技术文档

star =有关此产品的 TI 精选热门文档
未找到结果。请清除搜索并重试。
查看全部 7
类型 标题 下载最新的英语版本 日期
* 数据表 LMH6514 600 MHz, Digital Controlled, Variable Gain Amplifier 数据表 (Rev. A) 2013年 3月 18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 AN-1719 Noise Figure Analysis Fully Differential Amplifier (Rev. A) 2013年 5月 1日
用户指南 LMH6514 Digital Controlled Variable Gain Amplifier Evaluation Board (Rev. A) 2013年 5月 1日
应用手册 Using High Speed Diff Amp to Drive ADCs (Rev. A) 2013年 4月 26日
应用手册 Selecting Amplifiers, ADCs, and Clocks for High-Performance Signal Paths 2007年 9月 13日
应用手册 A Walk Along the Signal Path (High-Speed Signal Path) 2005年 3月 30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）。

模拟工具

PSPICE-FOR-TI — PSpice® for TI 设计和仿真工具

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产品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，可缩短产品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 (...)
发送申请
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。

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
View Options
封装 引脚 CAD 符号、封装和 3D 模型
WQFN (RGH) 16 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

视频