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IC BLOCK DIAGRAM & DESCRIPTION
IC503 BA4510F(OP AMP.)
IC706 SN74CBTLV1G125
(Low Voltage Single FET Bus Switch)
OE
1
A
2
GND
3
IC301 AN8838SB(CD HEAD AMP)
2
PDA
PDC
3
4
PDB
PDD
5
PDE
27
28
PDF
5
V
CC
SW
4
B
RF
RF
RFIN
6
7
8
A-ch
A
VCBA
B-ch
B
E-ch
E
VCBA
F-ch
F
22
23
TBAL FBAL
IC706 NC7SZ125(Buffer with 3-State Output)
Connection Diagram
Function Table
DE
H
H = HIGH Logic Level
L = LOW Logic Level
X = HIGH or LOW Logic Level
Z = HIGH Impedence Slam
RFDET
BDO
CSBRT
13
15
RF
detection
BDO
detection
OFTR
detection
Sub-
truction
Sub-
truction
24
25
TEN
TEOUT
- 6 -
DE
1
5
Vcc
A
2
GND
3
4
Y
(Top View)
Inputs
Output
In A
Out Y
L
L
L
L
H
H
X
Z
OFTR
CEA
ENV
11
17
12
19
3T-ENVE.
Band
Gap
16
9
10
PDOWN
LPD
LD
21
FEN
20
FEOUT
V
1
CC
26
V
REF
14
GND
18
LDON
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