SBAA500A May   2021  – September 2021 PCM6020-Q1 , PCM6240-Q1 , PCM6260-Q1 , PCM6340-Q1

 

  1.   Trademarks
  2. 1Introduction
  3. 2Slave Mode Power Consumption with PLL Enabled
  4. 3Slave Mode Power Consumption with PLL Disabled
  5. 4Digital Microphone Power Consumption
  6. 5MICBIAS Power Consumption
  7. 6Settings for Lowest Power Consumption
  8. 7Revision History

2 Slave Mode Power Consumption with PLL Enabled

Table 2-1 describes the typical current consumption of the PCM6xx0 when the PLL is enabled with AVDD set to 3.3 V. The PLL is enabled by:

  • Setting the bitfield PLL_PDZ in the PWR_CFG register
  • Applying a FSYNC and BCLK with the desired sampling rate and BCLK to FSYNC ratio

The current consumption measurements had the AGC and the Biquad Filters disabled.

Table 2-1 Typical Current Consumption (PLL Enabled)
SAMPLING FREQUENCY (kHz) ADC CHANNELS DECIMATION FILTERS BCLK RATIO WORD LENGTH AVDD CURRENT AT 3.3 V (mA)
8 1 Linear Phase 32 32 10.65
Low Latency 8.56
2 Linear Phase 48 24 14.40
Low Latency 13.72
3 Linear Phase 96 16.88
Low Latency 18.04
4 Linear Phase 22.09
Low Latency 21.98
5 Linear Phase 144 25.79
Low Latency 27.70
6 Linear Phase 31.14
Low Latency 30.84
16 1 Linear Phase 24 24 10.59
Low Latency 9.65
2 Linear Phase 48 12.85
Low Latency 13.27
3 Linear Phase 96 19.09
Low Latency 17.37
4 Linear Phase 24.03
Low Latency 23.92
5 Linear Phase 144 28.69
Low Latency 27.88
6 Linear Phase 30.93
Low Latency 31.40
24 1 Linear Phase 24 24 9.14
Low Latency 8.89
2 Linear Phase 48 14.38
Low Latency 14.39
3 Linear Phase 96 19.43
Low Latency 18.09
4 Linear Phase 21.81
Low Latency 22.50
5 Linear Phase 144 28.65
Low Latency 27.32
6 Linear Phase 32.91
32 1 Linear Phase 24 24 10.56
Low Latency 10.24
2 Linear Phase 48 13.17
Low Latency 14.42
3 Linear Phase 96 17.66
Low Latency 19.77
4 Linear Phase 22.82
Low Latency 22.32
5 Linear Phase 144 29.09
Low Latency 27.23
6 Linear Phase 33.62
Low Latency 31.98
48 1 Linear Phase 24 24 10.07
Low Latency 11.01
2 Linear Phase 48 14.92
Low Latency 15.15
3 Linear Phase 96 18.69
Low Latency 19.58
4 Linear Phase 24.22
Low Latency 25.25
5 Linear Phase 144 28.49
Low Latency 28.65
6 Linear Phase 34.32
Low Latency 33.56
44.1 1 Linear Phase 24 24 8.72
2 Linear Phase 48 15.17
3 Linear Phase 96 20.04
4 Linear Phase 25.28
5 Linear Phase 144 28.05
6 Linear Phase 34.10
96 1 Linear Phase 24 24 12.00
Low Latency 12.45
2 Linear Phase 48 16.58
Low Latency 17.39
3 Linear Phase 96 22.11
Low Latency 21.35
4 Linear Phase 29.42
Low Latency 26.91
192 1 Linear Phase 24 24 11.29
Low Latency 13.14
2 Linear Phase 48 16.00
Low Latency 18.28
3 Linear Phase 96 22.94
Low Latency 25.05
4 Linear Phase 27.43
Low Latency 29.60
384 1 Linear Phase 24 24 13.67
Low Latency 13.96
2 Linear Phase 48 20.33
Low Latency 20.47