Datasheet

PCM1741
5
SBAS175
TYPICAL PERFORMANCE CURVES
All specifications at T
A
= +25°C, V
CC
= V
DD
= 3.3V, system clock = 384f
S
(f
S
= 44.1kHz), and 24-bit input data, unless otherwise noted.
DIGITAL FILTER
Digital Filter (De-Emphasis Off
5
4
3
2
1
0
–1
–2
–3
–4
–5
TRANSITION CHARACTERISTICS (Slow Roll-Off)
0 0.1 0.2 0.3 0.4 0.5
Frequency (x f
S
)
Amplitude (dB)
0
–20
–40
–60
–80
–100
–120
–140
FREQUENCY RESPONSE (Sharp Roll-Off)
01234
Frequency (x f
S
)
Amplitude (dB)
0.05
0.04
0.03
0.02
0.01
0
–0.01
–0.02
–0.03
–0.04
–0.05
FREQUENCY RESPONSE PASSBAND
(Sharp Roll-Off)
0 0.1 0.2 0.3 0.4 0.5
Frequency (x f
S
)
Amplitude (dB)
0
–20
–40
–60
–80
–100
–120
–140
FREQUENCY RESPONSE (Slow Roll-Off)
01234
Frequency (x f
S
)
Amplitude (dB)
De-Emphasis
0.0
–1.0
–2.0
–3.0
–4.0
–5.0
–6.0
–7.0
–8.0
–9.0
–10.0
DE-EMPHASIS (f
S
= 32kHz)
02468101214
Frequency (kHz)
Level (dB)
0.5
0.4
0.3
0.2
0.1
0.0
–0.1
–0.2
–0.3
–0.4
–0.5
DE-EMPHASIS ERROR (f
S
= 32kHz)
02468101214
Frequency (kHz)
Error (dB)