SM9103M Datasheet, PDF (6/14 Pages) Nippon Precision Circuits Inc – DVDRAM Head Amplifier LSI

SM9103M
Data Signal Processor Characteristics
V_CC = 5 V ± 5%, GND = 0 V, T_a = 0 to 70 °C
Parameter
Condition
Rating
Unit
min
typ
max
DATAP−DATAN current-to-voltage
converter coefficient¹
RAM read
ROM read
10.0
12.5
15.0
kΩ
2.50
3.12
3.74
CAPAP−CAPAN current-to-voltage
converter coefficient²
RAM read
11.3
14.1
16.9
kΩ
DATAP, DATAN, CAPAP, CAPAN output
impedance
–
–
100
Ω
DATAP, DATAN, CAPAP, CAPAN output
center voltage³
No signal
0.9V_REF
–
1.1V_REF
V
CAPAP, CAPAN output center voltage
difference³
No signal
–
–
±50
mV
DATAP, DATAN, CAPAP, CAPAN output
operating output voltage
10 kΩ load, output center voltage reference
−0.7
–
+0.7
V
Variable coefficient switching time
Saturation output reset time⁴
DATAP, DATAN signal bandwidth⁵
CAPAP, CAPAN signal bandwidth⁵
RAM ↔ ROM read
RAM write → RAM read
f = 100 kHz −3 dB frequency
f = 100 kHz −3 dB frequency
–
–
10
ms
–
–
500
ns
19
–
–
MHz
20
–
–
MHz
DATAP−DATAN, CAPAP−CAPAN gain
peaking⁵
f = 100 kHz −3 dB frequency
−3
–
+0.5
dB
DATAP−DATAN, CAPAP−CAPAN group
delay time⁵
f = 1 to 10 MHz
–
–
±1.0
ns
1. [DATAP − DATAN] = K × [I_T1 + I_T2 + I_T3 + I_T4]
2. [CAPAP − CAPAN] = K × {[I_T1 + I_T2] − [I_T3 + I_T4]}
3. 5 kΩ load connected to ground to prevent abnormal operation
4. Converging to within final value ± 10%
5. 10 pF input load capacitors connected to T1, T2, T3, T4. DATAP, DATAN, CAPAP, CAPAN output load conditions shown below.
DATAP
0.01µF
5pF 5pF
DATAN
0.01µF
5pF 5pF
CAPAP
10kΩ
CAPAN
0.01µF
10pF 5pF
0.01µF
10pF 5pF
10kΩ
NIPPON PRECISION CIRCUITS—6