TLC320AD55 Datasheet, PDF (33/41 Pages) Texas Instruments – Sigma-Delta Analog Interface Circuit

5 Application Information
Telephone
Line
5 VA(ADC)
221 Ω
IN747B
IN747B
0.033 µF
221 Ω
3.9 kΩ
3900 pF
fc = 10.5 kHz
fc = 14.5 kHz
4.99 kΩ 4.99 kΩ
_
+
VMID
220 pF
2200 pF
AGND
OUT(+)
15 kΩ
10 kΩ
37 kΩ
_
VMID
+
220 pF
fc = 19.56 kHz
390 Ω ^{fc = 40.8 kHz}
(+)
0.01 µF
AGND
15 kΩ
10 kΩ
37 kΩ
_
fc = 19.56 kHz
390 Ω ^{fc = 40.8 kHz}
+
VMID
3900 pF
fc = 10.5 kHz
(–)
0.01 µF
AGND
3.9 kΩ
_
+
fc = 14.5 kHz
4.99 kΩ 4.99 kΩ
VMID
2200 pF
AGND
OUT(–)
20 kΩ
20 kΩ
+
10 µF 0.1 µF
AGND
VMID
Figure 5–1. TLC320AD55C Application Schematic
5–1