24
24
D-AJ03
GVSW
13
VRO
14
FEO
15
FEN
16
RFRP
BOTTOM
PEAK
17
RFRPIN
18
RFGO
19
RFGC
20
AGCIN
21
RFO
22
RFN
23
GND
RFDC
TEO
TEN
TEBC
SEL
LDO
MDI
TNI
TPI
FPI
FNI
V
CC
24
12
11
10
9
8
7
6
5
4
3
2
1
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
k
X0.5
X2
1.3V
15pF
10pF
10pF
50
µ
A
40
µ
A
1
X0.5
X2
240k
Ω
1.75k
Ω
2k
Ω
14k
Ω
1k
Ω
50k
Ω
2k
Ω
+
-
+
-
+ -
+
-
15pF
40pF
40pF
240k
Ω
22k
Ω
94k
Ω
60k
Ω
20k
Ω
20k
Ω
20k
Ω
20k
Ω
20k
Ω
20k
Ω
50k
Ω
15k
Ω
40k
Ω
20k
Ω
20k
Ω
12k
Ω
12k
Ω
15k
Ω
60k
Ω
3k
Ω
3k
Ω
180k
Ω
180k
Ω
30k
Ω
40k
Ω
40k
Ω
+
-
22k
Ω
94k
Ω
PEAK
Description
I/O
Pin
No.
Symbol
1
Vcc
3.3 power pin
3.3
2
FNI
I
Main beam amp input
1.65
3
FPI
I
Main beam amp input
1.65
4
TPI
I
Sub beam amp input
1.65
5
TNI
I
Sub beam amp input
1.65
6
MDI
I
Monitor photo diode amp input
0
7
LDO
O
Laser diode amp output
2.67
8
SEL
I
APC on/off sig., LDO pin cont. input
0
and bottom/peak detect f switching1.65
9
TEBC
I
Tracking error bal. sig. input
1.75
10
TEN
I
Tracking error sig. gen. amp (-) input
1.65
11
TEO
O
Tracking error sig. gen. amp output
1.65
12
RFDC
O
RF sig. peak detection output
1.5
13
GVSW
I
AGC, FE, TE amp gain switching
2.1
14
VRO
O
Ref. V (VRO) output
1.65
15
FEO
O
Focus error sig. gen. amp output
1.65
16
FEN
I
Focus error sig. gen. amp (-) input
1.65
17
RFRP
O
Tracking count sig. gen. amp output
0.75
18
RFRPIN
I
Tracking count sig. gen. amp input
1.65
19
RFGO
O
RF sig. amplitude adj. amp output
1.23
20
RFGC
I
RF amplitude adj. cont. sig. input
1.62
21
AGCIN
I
RF sig. amplitude adj. amp input
2.39
22
RFO
O
RF sig. gen. amp output
1.1
23
RFN
I
RF sig. gen. amp input
1.65
24
GND
GND pin
0
TA2157F Terminal Function
LOUT
1
2
3
4
5
6
7
30
29
28
27
26
25
24
DI
CE
VSS
TEST
LOUT
LBASS2
LBASS1
VDD
VREF
NC
ROUT
RBASS2
RBASS1
RTRE
RIN
CL
L4
L3
L2
L1
R1
R2
R3
R4
NC
NC
4
3
2
1
30
29
28
27
26
25
24
23
22
21
10
9
8
7
6
5
20
19
18
17
16
15
14
13
12
11
LTRE
LIN
LSELO
RTRE
RIN
RSELO
TEST
Vss
CE
DI
CL
V
DD
Vref
NC
ROUT
LBASS2
RBASS2
LBASS1
RBASS1
CONTROL
CIRCUIT
CONTROL
CIRCUIT
CONTROL
CIRCUIT
CCB
INTERFACE
LVref
RVref
TA2157F (IC146)
LC75342M (IC315)
Voltage
(V)
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