PCM1822 datasheet(12/41 Pages) TI

12 / 41 page

7.8 Typical Characteristics (continued)

at TA = 25°C, AVDD = 3.3 V, IOVDD = 3.3 V, fIN = 1-kHz sinusoidal signal, fS = 48 kHz, 32-bit audio data, BCLK = 256 ×

fS, TDM slave mode, PLL on, DRE_LVL = –36 dB, channel gain = 0 dB, and linear phase decimation filter (unless otherwise

noted); all performance measurements are done with a 20-kHz, low-pass filter, and an A-weighted filter

Frequency (Hz)

20 30 4050 70 100

200 300 500

1000

2000

5000

10000 20000

-200

-180

-160

-140

-120

-100

-80

-60

-40

-20

Channel-1 : DRE disabled

Channel-2 : DRE disabled

Figure 7-19. Single-ended Input: FFT With Idle Input and DRE

Disabled

Frequency (Hz)

20 30 4050 70 100

200 300 500

1000

2000

5000

10000 20000

-200

-180

-160

-140

-120

-100

-80

-60

-40

-20

Channel-1 : DRE enabled

Channel-2 : DRE enabled

Figure 7-20. Single-ended Input: FFT With a –60-dBr Input and

DRE Enabled

Frequency (Hz)

20 30 4050 70 100

200 300 500

1000

2000

5000

10000 20000

-200

-180

-160

-140

-120

-100

-80

-60

-40

-20

Channel-1 : DRE disabled

Channel-2 : DRE disabled

Figure 7-21. Single-ended Input: FFT With a –60-dBr Input and

DRE Disabled

Frequency (Hz)

20 30 4050 70 100

200 300 500

1000

2000

5000

10000 20000

-200

-180

-160

-140

-120

-100

-80

-60

-40

-20

Channel-1 : DRE disabled

Channel-2 : DRE disabled

Figure 7-22. Single-ended Input: FFT With a –1-dBr Input

PCM1822

SBASAK0 – DECEMBER 2020 – REVISED MAY 2022

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