ia3211 integration, ia3211 Datasheet - Page 9

• Manufacturer Part Number: ia3211
• Description: Optical Silicon Daa Modem/lineside Chipset
• Manufacturer: integration

TYPICAL APPLICATIONS
Note: The differential receiver output (AUDOUT) can also be used as a programmable gain single-ended output where the gain is
controlled by the resistors ratio.
Vss
68nF
-
+
0.7V
From Rx opto
1.25V
1uA
To Tx o pto
3K6
60K
Band-Ga p
Referen ce
600
22K
1K2
+
-
Vdd
Figure2: Hybrid and Optical Coupling
1V
3K6
+
-
+
-
+
-
+
-
+
-
Figure1: Audio Interface
IA3211
10-12mA
loop
current
+
-
Vdd
R1
Vss
17 TXBI AS
15 AUDO UT
16 AUDI N
19 RXOU T
18 ACRE F
14 Vss
11 TXAM P
35uA
Vdd
10K
25.5K
10K
121K
10K
10K
opto
opto
Differe ntial
RX audi o output
(option al)
RX audi o output
Differe ntial
TX audi o input
(option al)
TX audi o input
TX audio
-
+
ACREF
IA3211 & IA3212
RX Audio
9