Datasheet

®
9 PCM3501
TYPICAL PERFORMANCE CURVES (Cont.)
T
A
= +25°C, V
CC
= V
DD
= +3.3V, f
S
= 8kHz, and f
SIGNAL
= 1kHz, unless otherwise specified.
ADC SECTION
ANALOG FILTER
ANTI-ALIASING FILTER
STOPBAND CHARACTERISTICS
Frequency (Hz)
Amplitude (dB)
0
–5
–10
–15
–20
–25
–30
–35
–40
–45
–50
1k100 10k 100k 1M 10M
ANTI-ALIASING FILTER
PASSBAND CHARACTERISTICS
Frequency (Hz)
Amplitude (dB)
0
–0.1
–0.2
–0.3
–0.4
–0.5
–0.6
–0.7
–0.8
–0.9
–1.0
1k100101 10k 100k
ADC OUTPUT SPECTRA
TOTAL HARMONIC DISTORTION + NOISE
vs SIGNAL LEVEL
Signal Level (dB)
THD+N (dB)
0
–20
–40
–60
–80
–100
–84 –72 –60 –48 –36 –24 –12 0–96
THD+N fluctuates with signal level
as harmonics are limited to second
and third components.
0
–20
–40
–60
–80
–100
–120
–140
Amplitude (dB)
0
1
2
3
4
Frequency(kHz)
OUTPUT SPECTRUM (–0.5dB, N = 8192)
(T
A
= 25°C, V
CC
= V
DD
= 3.3V, f
S
= 8kHz, f
SIGNAL
= 1kHz)
0
–20
–40
–60
–80
–100
–120
–140
Amplitude (dB)
0
1
2
3
4
Frequency(kHz)
OUTPUT SPECTRUM (–60dB, N = 8192)
(T
A
= 25°C, V
CC
= V
DD
= 3.3V, f
S
= 8kHz, f
SIGNAL
= 1kHz)