5 Performance for TLV320ADC3120 and PCM3120-Q1

Each input setting will have an impact on performance. Table 5-1 shows the typical performance of the TLV320ADC3120 and PCM3120-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 10kOhm input impedance.

Table 5-1 Performance for TLV320ADC3120 and PCM3120-Q1

CMRR mode	Input Coupling	Input Impedance (Ohms)	SNR (dB)	THD+N (dB)
0	AC	10k	107	-95
	AC	20k	106	-94
	DC	10k	106	-94
	DC	20k	105	-94
1	AC	10k	107	-94
	AC	20k	106	-94
	DC	10k	106	-94
	DC	20k	105	-94
2	AC	10k	103	-93
	AC	20k	99	-92
	DC	10k	103	-93
	DC	20k	99	-92

CMRR mode	Input Coupling	Input Impedance (Ohms)	SNR (dB)	THD+N (dB)
0	AC	10k	107	-95
	AC	20k	106	-94
	DC	10k	106	-94
	DC	20k	105	-94
1	AC	10k	107	-94
	AC	20k	106	-94
	DC	10k	106	-94
	DC	20k	105	-94
2	AC	10k	103	-93
	AC	20k	99	-92
	DC	10k	103	-93
	DC	20k	99	-92

CMRR mode	Input Coupling	Input Impedance (Ohms)	SNR (dB)	THD+N (dB)
0	AC	10k	107	-95
	AC	20k	106	-94
	DC	10k	106	-94
	DC	20k	105	-94
1	AC	10k	107	-94
	AC	20k	106	-94
	DC	10k	106	-94
	DC	20k	105	-94
2	AC	10k	103	-93
	AC	20k	99	-92
	DC	10k	103	-93
	DC	20k	99	-92

CMRR mode	Input Coupling	Input Impedance (Ohms)	SNR (dB)	THD+N (dB)
0	AC	10k	107	-95
	AC	20k	106	-94
	DC	10k	106	-94
	DC	20k	105	-94
1	AC	10k	107	-94
	AC	20k	106	-94
	DC	10k	106	-94
	DC	20k	105	-94
2	AC	10k	103	-93
	AC	20k	99	-92
	DC	10k	103	-93
	DC	20k	99	-92