Datasheet
ELECTRICAL CHARACTERISTICS: DAC
PCM1690
SBAS448A – OCTOBER 2008 – REVISED JANUARY 2009 ..............................................................................................................................................
www.ti.com
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.
PCM1690
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
DAC CHARACTERISTICS
Resolution 16 24 Bits
DC ACCURACY
Gain mismatch channel-to-channel ± 2.0 ± 6 % of FSR
Gain error ± 2.0 ± 6 % of FSR
Bipolar zero error ± 1.0 % of FSR
DYNAMIC PERFORMANCE
(1) (2)
f
S
= 48 kHz, V
OUT
= 0 dB – 94 – 88 dB
Total harmonic distortion + noise THD+N f
S
= 96 kHz, V
OUT
= 0 dB – 94 dB
f
S
= 192 kHz, V
OUT
= 0 dB – 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
Sighnal-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
(between one channel and others)
f
S
= 192 kHz 108 dB
ANALOG OUTPUT
1.6 ×
Output voltage Differential V
PP
VCC1
0.5 ×
Center voltage V
VCC1
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 41 and Figure 42 of the Application Information
section.
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