Datasheet

ELECTRICAL CHARACTERISTICS: Power-Supply Requirements
PCM1789
www.ti.com .............................................................................................................................................. SBAS451A – OCTOBER 2008 – REVISED JANUARY 2009
ELECTRICAL CHARACTERISTICS: DAC (continued)
All specifications at T
A
= +25 ° C, VCC1 = VCC2 = 5 V, VDD = 3.3 V, f
S
= 48 kHz, SCKI = 512 f
S
, 24-bit data, and Sampling
mode = Auto, unless otherwise noted.
PCM1789
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
DIGITAL FILTER PERFORMANCE WITH SLOW ROLL-OFF
Passband 0.328 × f
S
Hz
Stop band 0.673 × f
S
Hz
Passband ripple < 0.328 × f
S
± 0.0013 dB
Stop band attenuation > 0.673 × f
S
– 75 dB
DIGITAL FILTER PERFORMANCE
Except SCKI = 128 f
S
and 192 f
S
28/f
S
sec
Group delay time (single, dual)
SCKI = 128 f
S
and 192 f
S
19/f
S
sec
Group delay time (quad) 19/f
S
sec
De-emphasis error ± 0.1 dB
All specifications at T
A
= +25 ° C, VCC1 = VCC2 = 5 V, VDD = 3.3 V, f
S
= 48 kHz, SCKI = 512 f
S
, 24-bit data, and Sampling
mode = Auto, unless otherwise noted.
PCM1789
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
POWER-SUPPLY REQUIREMENTS
VCC1/2 4.5 5.0 5.5 VDC
Voltage range
VDD 3.0 3.3 3.6 VDC
f
S
= 48 kHz 19 28 mA
I
CC
f
S
= 192 kHz 19 mA
Full power-down
(1)
170 µ A
Supply current
f
S
= 48 kHz 18 30 mA
I
DD
f
S
= 192 kHz 22 mA
Full power-down
(1)
60 µ A
f
S
= 48 kHz 154 239 mW
Power dissipation f
S
= 192 kHz 168 mW
Full power-down
(1)
1.05 mW
TEMPERATURE RANGE
Operating temperature PCM1789 consumer grade – 40 +85 ° C
Thermal resistance θ
JA
TSSOP-24 115 ° C/W
(1) SCKI, BCK, and LRCK stopped.
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