SM4712 Nippon_Precision_Circuits America, SM4712 Datasheet - Page 3

• Manufacturer Part Number: SM4712
• Description: DVD RAM Head Amp ic
• Manufacturer: Nippon_Precision_Circuits America

PIN DESCRIPTION
1. I = input, Ipd = Input with built-in pull-down resistor, I/O = input/output, O = output
Number
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
1
2
3
4
5
6
7
8
9
CALREQ
TEMPO
FSUBB
TSUBB
CAPAN
WRITE
FADDB
CAPAP
TADDB
MODE
DATAN
DATAP
SDATA
DGND
TEMPI
AGND
AGND
DVCC
AVCC
DPDD
DPDC
DPDB
DPDA
SENB
Name
VREF
FSUB
FADD
TSUB
TADD
SCLK
T1
T2
T3
T4
F1
F2
I/O
Ipd
Ipd
I/O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
–
–
–
–
–
I
I
I
I
I
I
I
I
I
I
I
I
I
I
1
Mode switching/offset correction control input 1
Mode switching/offset correction control input 2
Logic circuit ground. Connect to the analog ground if there is no dedicated pickup or logic ground.
Logic circuit supply. Connect to the analog supply if there is no dedicated pickup or logic supply.
Thermal sensor test output. Leave open for normal operation
Thermal sensor test input. Leave open for normal operation
Tracking PD input A
Tracking PD input B
Tracking PD input C
Tracking PD input D
Focus PD input E
Focus PD input F
Analog circuit ground
2.0 V reference voltage input
Focus error signal feedback input
Focus error signal output
Focus sum signal feedback input
Focus sum signal output
Analog circuit ground
Analog circuit supply
Buffered tracking signal output D for DPD servo
Buffered tracking signal output C for DPD servo
Buffered tracking signal output B for DPD servo
Buffered tracking signal output A for DPD servo
Phase-modulated data signal differential inverting output
Phase-modulated data signal differential non-inverting output
Tracking push-pull signal feedback input
Tracking push-pull signal output
ID data signal differential inverting output
ID data signal differential non-inverting output
Tracking PD sum signal feedback input
Tracking PD sum signal output
Offset correction status/request output
Serial interface enable input
Serial interface data input/acknowledge output
Serial interface clock input
SM9103M
Function
NIPPON PRECISION CIRCUITS—3