參數(shù)資料
型號(hào)： PCM4222PFBRG4
英文描述： High-Performance, Two-Channel, 24-Bit, 216kHz Sampling Multi-Bit Delta-Sigma Analog-to-Digital Converter
中文描述： 高性能，雙通道，24位，216kHz的采樣多位Δ-Σ模擬到數(shù)字轉(zhuǎn)換器
文件頁(yè)數(shù)： 32/40頁(yè)
文件大?。?/td> 609K
代理商： PCM4222PFBRG4
www.ti.com
560
W
40.2
W
40.2
W
270
W
270
W
1nF
1nF
100nF
VINL or VINR
-
-
VINL or VINR+
C
1
+
+
560
W
C
2
U2
2.7nF
U1
VCOML
or
VCOMR
INPUT+
INPUT
-
U1, U2 = NE5534A, OPA227, or similar
R
W
1
10k
W
10k
W
40.2
W
40.2
W
1.5k
W
1.5k
W
1nF
1nF
VINL
+
+
or VINR
VINL
-
-
or VINR
C
1
+
+
R
W
2
C
2
U2
2.7nF
U3
U1
INPUT+
INPUT
-
VCOML
or
VCOMR
U1, U2 = NE5534A, OPA227, or similar.
U3 = OPA227 or equivalent.
PCM4222
SBAS399A–OCTOBER 2006–REVISED MARCH 2007
C
1
and C
2
provide ac coupling. They may be removed if the dc offset from the preceeding circuit is negligible.
Figure 51. Alternative Buffer Circuit Using Standard Op Amps
R
1
and R
2
are optional. When used, values may be selected for the desired attenuation.
C
1
and C
2
provide ac coupling. They may be removed if the dc offset from the preceeding circuit is negligible.
Figure 52. Noninverting Differential Input Buffer Utilizing Standard Op Amps
32
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