SM4712 Nippon_Precision_Circuits America, SM4712 Datasheet - Page 2

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

PACKAGE DIMENSIONS
(Unit: mm)
BLOCK DIAGRAM
R0.63 to 0.89
+5V
+5V
TEMPO
TEMPI
T1
T2
T3
T4
F1
F2
0.29 to 0.39
Thermal sensor
Gain switching
(RAM read/write,
Offset canceller
amplifier
15.20 to 15.40
Gain switching
ROM read)
amplifier
Offset canceller
0.85
Canceller control
Serial interface
processor
processor
to each block
Analog
Analog
Signal
Signal
0.80
SM9103M
(A+B)-(C+D)
A+B+C+D
A
B
C
D
Differential
output buffer
Differential
output buffer
Gain switch
(2dB step)
Gain switch
(2dB step)
Amplifier
Amplifier
Buffer
Buffer
Buffer
Buffer
0.63 ± 0.10
NIPPON PRECISION CIRCUITS—2
DATAP
DATAN
TADDB
CAPAP
CAPAN
TSUBB
TSUB
DPDA
DPDB
DPDC
DPDD
CALREQ
FSUB
FSUBB
FADDB
FADD
TADD
0 to 8°