SBAA499A July 2021 – April 2022 PCM3120-Q1 , PCM5120-Q1 , PCM6120-Q1 , TLV320ADC3120 , TLV320ADC5120 , TLV320ADC6120
Each input setting will have an impact on performance. Table 7-1 shows the typical performance of the TLV320ADC6120 and PCM6120-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 2.5-kOhm input impedance with DRE enabled.
| CMRR mode | Input Coupling | DRE | Input Impedance (Ohms) | SNR (dB) | THD+N (dB) |
|---|---|---|---|---|---|
| 0 | AC | Enabled | 2.5k | 122 | -96 |
| 10k | 118 | -95 | |||
| 20k | 115 | -95 | |||
| Disabled | 2.5k | 112 | -96 | ||
| 10k | 110 | -95 | |||
| 20k | 109 | -95 | |||
| DC | Enabled | 2.5k | Not Supported | Not Supported | |
| 10k | 111 | -96 | |||
| 20k | 109 | -95 | |||
| Disabled | 2.5k | Not Supported | Not Supported | ||
| 10k | 108 | -96 | |||
| 20k | 106 | -95 | |||
| 1 | AC | Enabled | 2.5k | 120 | -96 |
| 10k | 116 | -95 | |||
| 20k | 113 | -95 | |||
| Disabled | 2.5k | 111 | -96 | ||
| 10k | 110 | -95 | |||
| 20k | 109 | -95 | |||
| DC | Enabled | 2.5k | Not Supported | Not Supported | |
| 10k | 112 | -96 | |||
| 20k | 109 | -96 | |||
| Disabled | 2.5k | Not Supported | Not Supported | ||
| 10k | 108 | -96 | |||
| 20k | 107 | -96 | |||
| 2 | AC | Enabled | 2.5k | 117 | -96 |
| 10k | 108 | -95 | |||
| 20k | 103 | -94 | |||
| Disabled | 2.5k | 111 | -96 | ||
| 10k | 106 | -95 | |||
| 20k | 102 | -94 | |||
| DC | Enabled | 2.5k | Not Supported | Not Supported | |
| 10k | 108 | -95 | |||
| 20k | 102 | -94 | |||
| Disabled | 2.5k | Not Supported | Not Supported | ||
| 10k | 106 | -95 | |||
| 20k | 102 | -94 |
TLV320ADC6120 and PCM6120-Q1 arethe highest perfomance devices in the TLV320ADCx120 and PCMx120-Q1 family. It is the best choice for applications that require high performance and high common-mode tolerance.