PGA2505 Description
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).
PGA2505 Key Features
- 234 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 = 150Ω and Gain = 30dB: -123dBu
- Total Harmonic Distortion plus Noise (THD+N) with Gain = 30dB: 0.0006%
- ZERO CROSSING DETECTION MINIMIZES AUDIBLE ARTIFACTS WHEN GAIN SWITCHING
- INTEGRATED DC SERVO MINIMIZES OUTPUT OFFSET VOLTAGE
- MON-MODE SERVO IMPROVES CMRR