SM4712 Nippon_Precision_Circuits America, SM4712 Datasheet - Page 9

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

1. FSUB = K [I
2. FADD = K [I
3. F1, F2: 14 pF input load capacitance
Mode Control Logic
Offset Correction Characteristics
V
FSUB offset voltage
FADD offset voltage
FSUB offset voltage temperature
coefficient
FSUB variable gain range
FSUB variable gain step width
FSUB gain switching absolute accuracy
TSUB offset residual
FSUB offset residual
Supply voltage droop detect level
Correction circuit startup supply voltage
V
Correction thermal sensor detect
temperature
Offset correction time
CC
1
FSUB, FADD: 10 pF output load capacitance, 10 k load resistance
and V
= 5 V ± 5%, GND = 0 V, T
2
LOW or open
LOW or open
difference
WRITE
HIGH
HIGH
Parameter
Parameter
F1
F1
+ I
I
F2
F2
]
], gain = 0 dB
Control input
a
No input signal,
V
post-correction,
T
No input signal, V
V
0.35 V
= 0 to 70 C
a
REF
OUT
Symbol
V
= 25 C
LOW or open
LOW or open
2
V
V
reference,
= V
1
2
MODE
V
HIGH
HIGH
REF
1
±
V
V
Condition
REF
REF
REF
RAM read/write, ROM
read max gain
RAM read, min to max
gain
RAM read/write
differential gain max.
+10 to +14 dB
16 to +8 dB
reference
reference, T
reference, T
SM9103M
Condition
a
a
= 25 C
= 25 C
Operating mode
ROM read
RAM write
RAM read
min
min
1.9
3.2
0.7
15
–
–
–
–
–
–
–
–
16
–
–
–
NIPPON PRECISION CIRCUITS—9
Rating
Rating
typ
typ
2.8
3.8
1.0
20
–
–
–
–
–
–
–
–
2
–
–
–
Offset correction
±0.22
max
max
±7.0
±0.5
±1.0
±8.5
±5.5
+14
±21
±50
150
3.7
4.4
1.3
±4
25
–
Inactive
Active
mV/ C
Unit
Unit
mV
mV
mV
mV
ms
dB
dB
dB
V
V
V
C