NTE1428 Datasheet, PDF (1/2 Pages) NTE Electronics – Integrated Circuit Cylinder Servo Control Circuit for VCR

NTE1428
Integrated Circuit
Cylinder Servo Control Circuit for VCR
Description:
The NTE1428 is an integrated circuit designed for VTR’s cylinder servo control.
Features:
D Sample Hold System Speed Control
D Incorporating Recording/Playback Switching Circuit
D Supply Voltage Either 9V or 12V
Absolute Maximum Ratings: (T_A = +25°C unless otherwise specified)
Supply Voltage, V_1−7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14.4V
Power Dissipation, P_D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 880mW
Operation ambient temperature, T_opr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −20 to +70°C
Storage temperature, T_stg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −40 to +150°C
Electrical Characteristics: (T_A = +25°C unless otherwise specified)
Parameter
Symbol
Test Conditions
Min Typ Max Unit
Circuit Current
I₁
V_1−7 = 12V
33 − 65 mA
Sensitivity PG − Amp. In
S₍₁₎ V_CC = 12V, 30Hz duty 96%
1
−
−
V_o−p
PG + Amp. In
S₍₂₎ V_CC = 12V, 30Hz duty 4%
1
−
−
V_o−p
Cap PG Amp. In
S₍₃₎ V_CC = 12V
50 −
− _mV_o−p
V_SS Amp. In
S₍₄₎
2
−
−
V_o−p
REF Amp. In
S₍₅₎
3
−
−
V_o−p
REC/P.B. Switch
S₍₆₎
5−−
V
Ref. Voltage (phase trapezoidal wave)
V_REF(1)
2.7 − 3.7 V
High−level output Voltage (Head−SW)
Low−level output Voltage (Head−SW)
V_OH(1) V_CC = 12V, V_I24 = 2V_p−p, 30Hz
9
duty 4%
V_{OL(2) VI23 = 2Vp−p, 30Hz duty 96%}
−
−−
V
− 600 mV
High−level output Voltage (REC CTL Amp)
V_OH(2) V_CC = 12V
8−−
V
Low−level output Voltage (REC CTL Amp) V_OL(2)
−−1
V
High−level output Voltage (S/H1)
V_OH(3)
9−−
V
Low−level output Voltage (S/H1)
V_OL(3)
− − 600 mV
Voltage Gain (CTL Amp.)
G_V
62 − 70 dB
Sensitivity (FG Amp. In)
S₍₇₎
100 −
− _mV_p−p
Ref. Voltage
(speed system trapezoidal wave)
V_REF(2)
2.7 − 3.7 V