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...............................................................................................................................................
SBAS071B – OCTOBER 2000 – REVISED AUGUST 2008
ANALOG FRONT-END (Single Channel)
C
EXT
470 pF
C
IN
PL 22
1.0
µF
+
1
V
IN
L
21
C
IN
NL
30 kΩ
−
−
+
+
1 kΩ
(−)
1 kΩ
(+)
Delta-Sigma
Modulator
2
4.7
µF
+
V
REF
1
REFCOM
3
4.7
µF
+
4
V
REF
V
REF
2
S0011-01
TYPICAL PERFORMANCE CURVES
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
vs
TEMPERATURE
THD+N − Total Harm. Dist. + Noise at −0.5 dB − %
THD+N − Total Harm. Dist. + Noise at −60 dB − %
0.010
4
98
DYNAMIC RANGE AND SNR
vs
TEMPERATURE
98
0.008
−60 dB
3
96
Dynamic Range − dB
96
SNR
94
94
0.006
2
−0.5 dB
0.004
1
92
92
0.002
−25
0
25
50
75
0
100
G001
90
−25
0
25
50
75
90
100
G002
T
A
− Free-Air Temperature −
°C
T
A
− Free-Air Temperature −
°C
Figure 1.
Figure 2.
Copyright © 2000–2008, Texas Instruments Incorporated
Product Folder Link(s):
SNR − Signal-to-Noise Ratio − dB
Dynamic Range
7
BURR-BROWN [ BURR-BROWN CORPORATION ]
