Datasheet
PCM1795
SLES248 – MAY 2009 ........................................................................................................................................................................................................
www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
All specifications at T
A
= +25 ° C, V
CC
1 = V
CC
2L = V
CC
2R = 5 V, V
DD
= 3.3 V, f
S
= 48 kHz, system clock = 256 f
S
, and 32-bit
data, unless otherwise noted.
PCM1795 DB
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
DYNAMIC PERFORMANCE (MONO MODE)
(3) (4) (5)
f
S
= 48 kHz 0.0005 %
THD+N at V
OUT
= 0 dB f
S
= 96 kHz 0.001 %
f
S
= 192 kHz 0.0015 %
EIAJ, A-weighted, f
S
= 48 kHz 126 dB
Dynamic range EIAJ, A-weighted, f
S
= 96 kHz 126 dB
EIAJ, A-weighted, f
S
= 192 kHz 126 dB
EIAJ, A-weighted, f
S
= 48 kHz 126 dB
Signal-to-noise ratio EIAJ, A-weighted, f
S
= 96 kHz 126 dB
EIAJ, A-weighted, f
S
= 192 kHz 126 dB
DSD MODE DYNAMIC PERFORMANCE (44.1 kHz, 64 f
S
)
(3) (6)
THD+N at FS 2 V rms 0.0007 %
Dynamic range – 60 dB, EIAJ, A-weighted 122 dB
Signal-to-noise ratio EIAJ, A-weighted 122 dB
ANALOG OUTPUT
Gain error – 7 ± 2 7 % of FSR
Gain mismatch, channel-to-channel – 3 ± 0.5 3 % of FSR
Bipolar zero error At BPZ – 2 ± 0.5 2 % of FSR
Output current Full-scale (0 dB) 4 mA
PP
Center current At BPZ – 3.5 mA
DIGITAL FILTER PERFORMANCE
De-emphasis error ± 0.1 dB
FILTER CHARACTERISTICS – 1: SHARP ROLL-OFF
± 0.0002 dB 0.454 f
S
Passband
– 3 dB 0.49 f
S
Stop band 0.546 f
S
Passband ripple ± 0.0002 dB
Stop-band attenuation Stop band = 0.546 f
S
– 98 dB
Delay time 38/f
S
s
FILTER CHARACTERISTICS – 2: SLOW ROLL-OFF
± 0.001 dB 0.21 f
S
Passband
– 3 dB 0.448 f
S
Stop band 0.79 f
S
Passband ripple ± 0.001 dB
Stop-band attenuation Stop band = 0.732 f
S
– 80 dB
Delay time 38/f
S
s
(3) Filter condition:
THD+N: 20-Hz high-pass filter (HPF), 20-kHz AES17 low-pass filter (LPF)
Dynamic range: 20-Hz HPF, 20-kHz AES17 LPF, A-weighted
Signal-to-noise ratio: 20-Hz HPF, 20-kHz AES17 LPF, A-weighted
Channel separation: 20-Hz HPF, 20-kHz AES17 LPF
Analog performance specifications are measured using the System Two™ Cascade audio measurement system by Audio Precision™ in
the averaging mode.
(4) Dynamic performance and dc accuracy are specified at the output of the post-amplifier as shown in Figure 52 .
(5) Dynamic performance and dc accuracy are specified at the output of the measurement circuit as shown in Figure 54 .
(6) Dynamic performance and dc accuracy are specified at the output of the post-amplifier as shown in Figure 53 .
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