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TA2109F-X (IC501) : RF amp.
1. Pin layout
24
2. Block diagram
SBAD
13
FEO
14
FEN
15
VRO
16
RFRP
17
RFIS
18
RFGO
19
RFGC
20
AGCI
21
re=130 ohm
RFO
22
GND
23
RFN
24
3. Pin function
Pin
Symbol I/O
No.
1
Vcc
-
Power supply input terminal
2
FNI
I
Main beam I-V amp input terminal
3
FPI
I
Main beam I-V amp input terminal
4
TPI
I
Sub beam I-v input terminal
TNI
I
Sub beam I-V input terminal
5
6
MDI
I
Monitor photo diode amp input terminal
7
LDO
O
Laser diode amp output terminal
8
SEL
I
Laser diode control signal input terminal
9
TEB
I
T. error balance adj. signal input terminal
10
2VRO
O
Reference voltage output terminal
11
TEN
I
TE amp negative input terminal
12
TEO
O
TE error signal output terminal
1‑32
1
15k ohm
15k ohm
20uA
50k ohm
10k ohm
36pF
7.96k ohm
10k ohm
21k ohm
21k ohm
50uA
20k ohm
12k ohm
12k ohm
20k ohm
PEAK
BOTTOM
23.5k ohm
12k ohm
1.53k ohm
3.3k ohm
3.3k ohm
Pin function
13
12
30k ohm
10k ohm
10k ohm
30k ohm
21k ohm 29k ohm
24k ohm 24k ohm
1.74k ohm
180k ohm
20pF
180k ohm
20pF
180k ohm
40pF
60k ohm
60k ohm
180k ohm
40pF
Pin
Symbol I/O
No.
13
SBAD
O
Sub beam adder signal output terminal
14
FEO
O
Focus error signal output terminal
15
FEN
I
FE amp negative input terminal
16
VRO
O
Reference voltage (VREF) output terminal
RFRP
O
Track count signal output terminal
17
18
RFIS
I
RFRP detect circuit input terminal
19
RFGO
O
RF gain signal output terminal
20
RFGC
I
RF amplitude adj. control signal input terminal
21
AGCI
I
RF signal amplitude adj. amp input terminal
22
RFO
O
RF signal output terminal
23
GND
-
Ground terminal
24
RFN
I
RF amp negative input terminal
7.67k ohm
TEO
12
20pF
TEN
11
10k ohm
2VRO
10
TEB
9
3 STATE
DET.
SEL
SW1
47k ohm
8
LCD
LDO
1k ohm
SW2
7
680 ohm
SW3
MDI
6
2.12k ohm
13k ohm
TNI
I-I
5
TPI
I-I
4
20k ohm
FPI
3
20k ohm
20k ohm
FNI
2
20k ohm
Vcc
1
Pin function
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