PCM1802

SLES023B – DECEMBER 2001 – REVISED MARCH 2002

9

www.ti.com

TYPICAL PERFORMANCE CURVES

Figure 13

0.01

0.02

0.03

0.04

0

102030

40

fSAMPLE Condition – kHz

TOTAL HARMONIC DISTORTION + NOISE

vs

0.004

0.003

0.002

0.001

44.1

96‡

48†

†fS = 48 kHz, System Clock = 256 fS,

Oversampling Ratio =

×128.

‡fS = 96 kHz, System Clock = 256 fS,

Oversampling Ratio =

×64.

Figure 14

100

101

102

103

104

105

106

107

108

109

110

0

102030

40

DYNAMIC RANGE and SNR

vs

44.1

96‡

48†

SNR

Dynamic Range

fSAMPLE Condition – kHz

†fS = 48 kHz, System Clock = 256 fS,

Oversampling Ratio =

×128.

‡fS = 96 kHz, System Clock = 256 fS,

Oversampling Ratio =

×64.

output spectrum

Figure 15

f – Frequency – kHz

–140

–120

–100

–80

–60

–40

–20

0

0

5

10

15

20

Input Level = –0.5 dB

Data Points = 8192

AMPLITUDE

vs

FREQUENCY

Figure 16

f – Frequency – kHz

–140

–120

–100

–80

–60

–40

–20

0

0

5

10

15

20

AMPLITUDE

vs

FREQUENCY

Input Level = –60 dB

Data Points = 8192

All specifications at TA = 25°C, VCC = 5 V, VDD = 3.3 V, master mode, fS = 44.1 kHz, system clock = 384 fS, oversampling ratio = ×128,

24-bit data, unless otherwise noted.