Datasheet

ELECTRICAL CHARACTERISTICS: DIGITAL AND DYNAMIC PERFORMANCE
PCM4220
www.ti.com ............................................................................................................................................. SBAS407C – DECEMBER 2006 – REVISED AUGUST 2009
All specifications are at T
A
= +25 ° C, VCC1 = VCC2 = +4.0V, and VDD = +3.3V, unless otherwise noted.
PCM4220
PARAMETER CONDITIONS MIN TYP MAX UNIT
DIGITAL I/O CHARACTERISTICS
(Applies to all digital pins)
High-level input voltage, V
IH
0.7 × VDD VDD V
Low-level input voltage, V
IL
0 0.3 × VDD V
High-level input current, I
IH
1 10 µ A
Low-level input current, I
IL
1 10 µ A
High-level output voltage, V
OH
I
O
= – 2mA 0.8 × VDD VDD V
Low-level output voltage, V
OL
I
O
= +2mA 0 0.2 × VDD V
Input capacitance, C
IN
3 pF
PCM OUTPUT SAMPLING RATE, f
S
Normal mode 8 54 kHz
Double Speed mode 54 108 kHz
Quad Speed mode 108 216 kHz
MASTER CLOCK INPUT
Normal mode, MCKI = 256f
S
2.048 13.824 MHz
Double Speed mode, MCKI = 128f
S
6.912 13.824 MHz
Quad Speed mode, MCKI = 64f
S
6.912 13.824 MHz
DYNAMIC PERFORMANCE
(1)
PCM Output, Normal Mode, f
S
= 48kHz BW = 22Hz to 20kHz
Total harmonic distortion + noise (THD+N) f = 997Hz, – 1dB input – 108 – 100 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 f = 10kHz, – 1dB input 115 135 dB
PCM Output, Double Speed Mode, f
S
= 96kHz 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 f = 10kHz, – 1dB input 135 dB
PCM Output, Quad Speed Mode, f
S
= 192kHz BW = 22Hz to 40kHz
Total harmonic distortion + noise (THD+N) f = 997Hz, – 1dB input – 107 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 f = 10kHz, – 1dB input 135 dB
PCM Output, Quad Speed Mode, f
S
= 192kHz BW = 22Hz to 80kHz
Total harmonic distortion + noise (THD+N) f = 997Hz, – 1dB input – 106 dB
f = 997Hz, – 20dB input – 91 dB
f = 997Hz, – 60dB input – 52 dB
Dynamic range, no weighting f = 997Hz, – 60dB input 112 dB
Dynamic range, A-weighted f = 997Hz, – 60dB input 123 dB
Channel separation 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 modified for use with the PCM4220. Measurement bandwidth and weighting settings are noted in the
Parameter and Conditions columns. THD+N is measured without the use of weighting filters. Master mode operation is utilized for all
typical performance parameters, with the master clock input frequency (MCKI) set to 12.288MHz.
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