SBAA634 April   2026 TAA5212 , TAA5412-Q1 , TAC5111 , TAC5111-Q1 , TAC5112 , TAC5112-Q1 , TAC5211 , TAC5212 , TAC5311-Q1 , TAC5312-Q1 , TAC5412-Q1 , TAD5112 , TAD5112-Q1 , TAD5212 , TAD5212-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Detailed Description
    1. 2.1 Common Mode Tolerance Modes
    2. 2.2 Common-Mode Rejection
    3. 2.3 Device Performance Across CM_TOL Modes
  6. 3Summary
  7. 4References

Abstract

The TAx5x1x/TAx5x1x-Q1 family of devices include dual-channel, high-performance, analog to-digital converters for audio applications. This family of devices supports highly configurable inputs to allow the device to achieve high performance even in the presence of large common-mode signals.

Common Mode Rejection Ratio (CMRR) is an important specification in determining the performance of an audio ADC when it is placed in systems that can contain common-mode interferences on the signal lines. One example of such must be the 50-60Hz supply line interference. This application note describes how to configure the input common-mode level tolerance on the TAC5x1x/TAC5x1x-Q1 devices, along with the impact on certain performance parameters such as SNR, THD+N, and so on.

This application note is applicable for the following devices in the family:

  • TAC5212, TAC5112
  • TAC5111
  • TAA5212
  • TAC5112-Q1, TAC5111-Q1
  • TAC5242, TAC5142
  • TAA5242