PCM3010

SLES055 – NOVEMBER 2002

21

www.ti.com

Frequency [

fS]

–180

–160

–140

–120

–100

–80

–60

–40

–20

0

012

345

678

AMPLITUDE

vs

FREQUENCY

Jitter – ps

90

95

100

105

110

115

120

125

0

100

200

300

400

500

600

DYNAMIC RANGE

vs

JITTER

Figure 42. Quantization Noise Spectrum

(

64 Oversampling)

Figure 43. Jitter Dependence

(

64 Oversampling)

system clock

automatically with the built-in circuit. Operation at the 192-kHz sampling rate is available on the DAC only, and

system clock frequency, and Figure 44 illustrates the system clock timing.

Table 1. Typical System Clock

SAMPLING RATE

SYSTEM CLOCK FREQUENCY – MHz

FREQUENCY (fS) – LRCK

128 fS

192 fS

256 fS

384 fS

512 fS

768 fS

32 kHz

–

–

8.192

12.288

16.384

24.576

44.1 kHz

–

–

11.2896

16.9344

22.5792

33.8688

48 kHz

–

–

12.288

18.432

24.576

36.864

96 kHz

–

–

24.576

36.864

49.152

–

192 kHz

24.576†

36.864†

–

–

–

–

† DAC only.