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ELECTRICAL CHARACTERISTICS: DIGITAL and DYNAMIC PERFORMANCE

PCM4222

SBAS399A – OCTOBER 2006 – REVISED MARCH 2007

PCM4222

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

DIGITAL I/O CHARACTERISTICS

(Applies to all digital I/O pins)

0.7

× VDD

VDD

V

0

0.3

× VDD

V

1

10

µA

1

10

µA

0.8

× VDD

VDD

V

0

0.2

× VDD

V

3

pF

Normal mode

8

54

kHz

Double Speed mode

54

108

kHz

Quad Speed mode

108

216

kHz

64x output mode

0.512

3.456

MHz

128x output mode

1.024

6.912

MHz

1.024

6.912

MHz

MASTER CLOCK INPUT

2.048

13.824

MHz

6.912

13.824

MHz

6.912

13.824

MHz

DSD 64x output mode, MCKI = 4

× f

DSD

2.048

13.824

MHz

DSD 128x output mode, MCKI = 2

× f

DSD

2.048

13.824

MHz

Multi-bit modulator output, MCKI = 2

× f

MOD

2.048

13.824

MHz

BW = 22Hz to 20kHz

Total harmonic distortion + noise (THD+N)

f = 997Hz, –1dB input

–108

–101

dB

f = 997Hz, –20dB input

–100

dB

f = 997Hz, –60dB input

–61

dB

Dynamic range, no weighting

f = 997Hz, –60dB input

121

dB

Dynamic range, A-weighted

f = 997Hz, –60dB input

118

123

dB

Channel separation/interchannel isolation

f = 10kHz, –1dB input

115

135

dB

BW = 22Hz to 40kHz

Total harmonic distortion + noise (THD+N)

f = 997Hz, –1dB input

–108

dB

f = 997Hz, –20dB input

–98

dB

f = 997Hz, –60dB input

–58

dB

Dynamic range, no weighting

f = 997Hz, –60dB input

118

dB

Dynamic range, A-weighted

f = 997Hz, –60dB input

123

dB

Channel separation/interchannel isolation

f = 10kHz, –1dB input

135

dB

(1)

Typical PCM output performance is measured and characterized with an Audio Precision SYS-2722 192kHz test system and a

PCM4222EVM evaluation module using the bandwidth and weighting settings as noted in the Conditions column. Typical DSD and

Multi-Bit output performance is characterized using an Audio Precision SYS-2722 analog generator, a PCM4222EVM evaluation

module, and a separate data acquisition system for collection and signal processing. The bandwidth and input settings used for these

measurements are noted in the Conditions column. Master mode operation is utilized for all modes, with the master clock input

frequency (MCKI) set to 12.288MHz for PCM and MBM output modes, and 11.2896MHz for DSD output mode.

3

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