SBAA499A July   2021  – April 2022 PCM3120-Q1 , PCM5120-Q1 , PCM6120-Q1 , TLV320ADC3120 , TLV320ADC5120 , TLV320ADC6120

 

  1.   Trademarks
  2. 1 Introduction
  3. 2 Common-Mode Tolerance Modes
  4. 3 Common-Mode Rejection Performance
  5. 4 Input Common-Mode Distortion
  6. 5 Performance for TLV320ADC3120 and PCM3120-Q1
  7. 6 Performance for TLV320ADC5120 and PCM5120-Q1
  8. 7 Performance for TLV320ADC6120 and PCM6120-Q1
  9. 8 Summary
  10. 9 Related Documentation
  11. 10Revision History

6 Performance for TLV320ADC5120 and PCM5120-Q1

Each input setting will have an impact on performance. Table 6-1 shows the typical performance of the TLV320ADC5120 and PCM5120-Q1 with differential inputs in each of the modes. For the best noise and distortion performance, it is recommended to use CMRR mode 0, AC coupled input, and 2.5kOhm input impedance with DRE enabled.

Table 6-1 Performance for TLV320ADC5120 and PCM5120-Q1
CMRR modeInput CouplingDREInput Impedance (Ohms)SNR (dB)THD+N (dB)
0ACEnabled2.5k120-96
10k117-95
20k114-95
Disabled2.5k109-96
10k108-95
20k107-95
DCEnabled2.5kNot SupportedNot Supported
10k110-95
20k108-95
Disabled2.5kNot SupportedNot Supported
10k106-95
20k105-95
1ACEnabled2.5k117-96
10k114-95
20k112-95
Disabled2.5k108-96
10k107-95
20k106-95
DCEnabled2.5kNot SupportedNot Supported
10k111-96
20k108-96
Disabled2.5kNot SupportedNot Supported
10k106-96
20k105-96
2ACEnabled2.5k114-96
10k106-95
20k100-93
Disabled2.5k107-96
10k103-95
20k99-93
DCEnabled2.5kNot SupportedNot Supported
10k105-95
20k100-93
Disabled2.5kNot SupportedNot Supported
10k103-95
20k99-93