(No.49841)1-35
SECTION 4
Description of major ICs
4.1
BA3220FV-X (IC171,IC271) : Line out amplifier
• Pin layout
• Block diagram
1
7
8
3220
14
+ -
+ -
- +
+ -
-
-
+
+
REFR
REFL
FILTER
8
9
10
11
12
13
14
2
3
4
5
6
7
INR
NFR
FIL
NFL
Vcc
INL
CL-
LGND
OUTL
OUTR
RGND
CR-
CR+
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9
2
8
9
4
2
9
8
TEL 13942296513
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
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