Datasheet

30 kΩ
1 kΩ
C
EXT
470 pF
2122
V
IN
L
V
REF
1
C
IN
PL C
IN
NL
1
2
3
4
Delta-Sigma
Modulator
(+)
V
REF
REFCOM
V
REF
2
+
1.0 µF
4.7 µF
+
4.7 µF
+
+
−
(−)
+
−
1 kΩ
S0011-01
TYPICAL PERFORMANCE CURVES
90
92
94
96
98
−25 0 25 50 75 100
T
A
− Free-Air Temperature − °C
Dynamic Range − dB
SNR
98
96
94
90
92
Dynamic Range
SNR − Signal-to-Noise Ratio − dB
G002
0.002
0.004
0.006
0.008
0.010
−25 0 25 50 75 100
T
A
− Free-Air Temperature − °C
THD+N − Total Harm. Dist. + Noise at −0.5 dB − %
−0.5 dB
4
3
2
0
1
−60 dB
G001
THD+N − Total Harm. Dist. + Noise at −60 dB − %
PCM1800
www.ti.com ............................................................................................................................................... SBAS071B – OCTOBER 2000 – REVISED AUGUST 2008
ANALOG FRONT-END (Single Channel)
All specifications at T
A
= 25 ° C, V
DD
= V
CC
= 5 V, slave mode, f
S
= 44.1 kHz, 20-bit input data, and SYSCLK = 384 f
S
, unless
otherwise noted
THD+N DYNAMIC RANGE AND SNR
vs vs
TEMPERATURE TEMPERATURE
Figure 1. Figure 2.
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