Sharp XL-55

– 43 –
XL-55/55C
IC802 VHiAN22000A-1: Head Amp. (AN22000A)
1 PD APC amp input.
2 LD APC amp output.
3 VCC Power supply.
4 RFN RF amp inverting input.
5 RFOUT RF addition amp output.
6 RFIN AGC amp input.
7 CAGC AGC loop filter connection.
8 ARF AGC output.
9 CEA Capacitor for HPF-amp connection.
10 3TOUT 3T-ENV output.
11 CBDO Capacitor for RF dark-side envelope detection connection.
12 BDO BDO output.
13 COFTR Capacitor for RF bright-side envelope detection connection.
14 OFTR OFTR output.
15 NRFDET NRFDET output.
16 GND Ground
17 VREF VREF output.
18 VDET VDET output.
19 TEBPF VDET input.
20 TEOUT TE amp output.
21 TEN TE amp inverting input.
22 FEN FE amp inverting input.
23 FEOUT FE amp output.
24 GCTL Gain & APC control.
25 FBAL FBAL control.
26 TBAL TBAL control.
27 E Tracking signal input 1.
28 F Tracking signal input 2.
29 D Focus signal input 4.
30 B Focus signal input 2.
31 C Focus signal input 3.
32 A Focus signal input 1.
Pin No.
Function
Terminal Name
Figure 43 BLOCK DIAGRAM OF IC
A
C
B
D
F
VREF
E
32 28
17
27293031
24
3
16
25
26
1
19
20
10915
22 23 21
18
2
4
14
13
12
11
8
7
6
5
RFN
RFOUT
RF_EQ
AGC
BDO
NRFDET
OFTR
3TENV
CAGC
ARF
CBD0
BD0
COFTR
OFTR
CEA
3TOUT
NRFDET FEN FEOUT TEN TEOUT TEBPF VDET
VCC
GND
PD LD
FBAL
GCTL
TBAL
+
-
+
-
+
-
+
-
VDET
SUBT SUBT
AMP
GCA
BCA
AMP
GCA
BCA
AMP
GCA
BCA
AMP
GCA
BCA
RFIN