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.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | Digitally-Controlled Microphone Preamplifier datasheet (Rev. B) | 2009年 6月 10日 | |
| User guide | PGA2505EVMV2 User's Guide | PDF | HTML | 2021年 10月 12日 | |
| EVM User's guide | PGA2505EVM User's Guide | 2009年 6月 17日 |
設計與開發
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PGA2505EVM — PGA2505 評估模組
The PGA2505EVM is a convenient platform for evaluating the performance and features of the PGA2505. The PGA2505 is a digitally-controlled, microphone preamplifier designed for amplifying the output of dynamic and condenser microphones and driving high-performance audio analog-to-digital (A/D) (...)
PGA2505EVMV2 — 具 USB 介面的 PGA2505 評估模組數位控制麥克風前置放大器
PGA2505EVMV2 評估模組 (EVM) 是一個方便使用的平台，適用於評估 PGA2505 產品的性能和功能。可編程增益放大器可編程為以單位增益貫通訊號，或對輸入訊號施加 9-dB 至 60-dB (3dB 步進) 的增益。增益和支援功能可透過使用 MSP430F5529 微控制器和 PGA2505EVMV2 圖形使用者介面 (GUI) 來控制。
PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| SSOP (DB) | 24 | Ultra Librarian |
訂購與品質
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 認證摘要
- 進行中持續性的可靠性監測
- 晶圓廠位置
- 組裝地點
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。