Datasheet
ELECTRICAL CHARACTERISTICS: DAC
PCM1789
SBAS451A – OCTOBER 2008 – REVISED JANUARY 2009 ..............................................................................................................................................
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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
RESOLUTION 16 24 Bits
DC ACCURACY
Gain mismatch channel-to-channel ± 2.0 ± 6.0 % of FSR
Gain error ± 2.0 ± 6.0 % of FSR
Bipolar zero error ± 1.0 % of FSR
DYNAMIC PERFORMANCE
(1) (2)
f
S
= 48 kHz – 94 – 88 dB
Total harmonic distortion + noise THD+N V
OUT
= 0 dB f
S
= 96 kHz – 94 dB
f
S
= 192 kHz – 94 dB
f
S
= 48 kHz, EIAJ, A-weighted 106 113 dB
Dynamic range f
S
= 96 kHz, EIAJ, A-weighted 113 dB
f
S
= 192 kHz, EIAJ, A-weighted 113 dB
f
S
= 48 kHz, EIAJ, A-weighted 106 113 dB
Signal-to-noise ratio SNR f
S
= 96 kHz, EIAJ, A-weighted 113 dB
f
S
= 192 kHz, EIAJ, A-weighted 113 dB
f
S
= 48 kHz 103 109 dB
Channel separation f
S
= 96 kHz 109 dB
f
S
= 192 kHz 108 dB
ANALOG OUTPUT
Output voltage Differential 1.6 × VCC1 V
PP
Center voltage 0.5 × VCC1 V
To ac-coupled GND
(3)
5 k Ω
Load impedance
To dc-coupled GND
(3)
15 k Ω
f = 20 kHz – 0.04 dB
LPF frequency response
f = 44 kHz – 0.18 dB
DIGITAL FILTER PERFORMANCE WITH SHARP ROLL-OFF
Except SCKI = 128 f
S
and 192 f
S
0.454 × f
S
Hz
Passband (single, dual)
SCKI = 128 f
S
and 192 f
S
0.432 × f
S
Hz
Passband (quad) 0.432 × f
S
Hz
Except SCKI = 128 f
S
and 192 f
S
0.546 × f
S
Hz
Stop band (single, dual)
SCKI = 128 f
S
and 192 f
S
0.569 × f
S
Hz
Stop band (quad) 0.569 × f
S
Hz
Passband ripple < 0.454 × f
S
, 0.432 × f
S
± 0.0018 dB
Stop band attenuation > 0.546 × f
S
, 0.569 × f
S
– 75 dB
(1) In differential mode at VOUTx ± pin, f
OUT
= 1 kHz, using Audio Precision System II, Average mode with 20-kHz LPF and 400-Hz HPF.
(2) f
S
= 48 kHz: SCKI = 512 f
S
(single), f
S
= 96 kHz : SCKI = 256 f
S
(dual), f
S
= 192 kHz : SCKI = 128 f
S
(quad).
(3) Allowable minimum input resistance of differential-to-single-ended converter with D-to-S gain = G is calculated as (1 + 2G)/(1 + G) × 5k
for ac-coupled, and (1+ 0.9G)/(1 + G) × 15k for dc-coupled connection; refer to Figure 38 and Figure 39 .
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Product Folder Link(s): PCM1789