PGA2505
- FULLY DIFFERENTIAL lNPUT-TO-OUTPUT ARCHITECTURE
- DIGITALLY-CONTROLLED GAIN USING SPI™:
- Gain Range: 9dB through 60dB, 3dB per Step
- Unity (0dB) Gain Setting via Serial Port
- DYNAMIC PERFORMANCE:
- Equivalent Input Noise with ZS = 150
and Gain = 30dB: -123dBu - Total Harmonic Distortion plus Noise (THD+N) with Gain = 30dB: 0.0006%
- Equivalent Input Noise with ZS = 150
- ZERO CROSSING DETECTION MINIMIZES AUDIBLE ARTIFACTS WHEN GAIN SWITCHING
- INTEGRATED DC SERVO MINIMIZES OUTPUT OFFSET VOLTAGE
- COMMON-MODE SERVO IMPROVES CMRR
- FOUR-WIRE SERIAL CONTROL PORT INTERFACE:
- Simple Interface to Microprocessor or DSP Serial Ports
- Supports Daisy-Chaining of Multiple PGA2505 Devices
- OVER-RANGE OUTPUT PIN PROVIDES CLIPPING INDICATION
- FOUR GENERAL-PURPOSE DIGITAL OUTPUT PINS
- ±5V POWER SUPPLIES
- AVAILABLE IN AN SSOP-24 PACKAGE
- APPLICATIONS
- MICROPHONE PREAMPLIFIERS AND MIXERS
- DIGITAL MIXERS AND RECORDERS
- DIGITAL AUDIO EDITING SYSTEMS
- BROADCAST EQUIPMENT
- INTERCOMS
All trademarks are the property of their respective owners.
The PGA2505 is a digitally-controlled, analog microphone preamplifier designed for use as a front-end for high-performance audio analog-to-digital converters (ADCs). The PGA2505 features include low noise, wide dynamic range, and a differential signal path. An on-chip dc servo loop is employed to minimize dc offset, while a common-mode servo function may be used to enhance common-mode rejection.
The PGA2505 features a gain range of 9dB through 60dB (3dB/step), along with a unity gain setting. The wide gain range allows the PGA2505 to be used with a variety of microphones. Gain settings and internal functions are programmed using a 16-bit control word, which is loaded using a simple serial port interface. A serial data output pin provides support for daisy-chained connection of multiple PGA2505 devices. Four programmable digital outputs are provided for controlling the external switching of input pads, phantom power, and high-pass filters. The PGA2505 requires both +5V and -5V power supplies and is available in a small SSOP-24 package.
技术文档
| 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 | Digitally-Controlled Microphone Preamplifier 数据表 (Rev. B) | 2009-6-10 |
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）。
PGA2505EVM — PGA2505 评估模块
PGA2505EVM 是一个用于评估 PGA2505 性能和特性的便捷平台。PGA2505 是一款数控麦克风前置放大器，专为放大动态和电容式麦克风的输出以及驱动高性能音频模数 (A/D) 转换器而设计。
PGA2505EVMV2 — PGA2505 具有 USB 接口的数字控制麦克风前置放大器评估模块
PGA2505EVMV2 评估模块 (EVM) 是一个用于评估 PGA2505 产品性能和特性的便捷平台。可编程增益放大器可编程为在单位增益下传递信号，或对输入信号应用 9dB 至 60dB（3dB 步长）的增益。增益和支持功能可通过 MSP430F5529 微控制器和 PGA2505EVMV2 图形用户界面 (GUI) 进行控制。
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| SSOP (DB) | 24 | Ultra Librarian |
订购和质量
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