NTE NTE7136 Datasheet
NTE7136
Integrated Circuit
Vertical Deflection Power Amplifier for Monitors
Description:
The NTE7136 is a vertical power amplifier for differential input signals in a 9–Lead SIP type package
suitable for color monitor/TV systems with deflection frequencies up to 140Hz.
Features:
D Vertical Pre–Amplifier with Differential Inputs
D Powerless Vertical Shift
D Flyback Voltage Generation Suitable for Two Operating Modes (Doubling the Supply Voltage
or External Supply for the Short Flyback Time, this Achieves a Minimum of Power Dissipation)
D Vertical Output Stage with Thermal and SOAR Protection
D High Deflection Frequency up to 140Hz
D High Linear Sawtooth Signal Amplification
D Possibility of Guarding the Deflection
D Voltage Stabilizer
Absolute Maximum Ratings: (Voltages referenced to substrate (Pin6) unbless otherwise specified)
Supply Voltage (Pin1), V
Supply Voltage (Pin4), V
Supply Voltage (Pin8), V
Voltage on Pin2, Pin3, and Pin9, V2, V3, V
Voltage on Pin5 and Pin7, V5, V
Current on Pin4, I
4
Output Current on Pin5 (Peak Value, Note 1), I
Flyback Current on Pin7 (Peak Value), I
Current on Pin9, I
9
Junction Temperature (Note 1), T
Operating Ambient Temperatrure Range, T
Storage Temperature Range, T
P1
P2
P3
stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9
7
5 (M)
7 (M)
VJ
A
Thermal Resistance, Junction–to–Mounting Base, R
Electrostatic Handling for all Pins (Note 2), V
es
–20° to +75°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
–25° to +150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
thJMB
40V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
60V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
60V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
60V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
±1.5A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
±1.5A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
–8A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
+168°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5K/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
±300V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Note 1. Internally limited by thermal protection; switching temperature point at 160 ±8°C
Note 2. Equivalent to discharging a 200pF capacitor throuhg a 0Ω series resistor.
V
P1
1A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Characteristics: (VP1 = VP2 = 25V, VN = V6 = 0V, TA = +25°C, voltages referenced to
substrate (Pin6) unless otherwise specified)
Parameter Symbol Test Conditions Min Typ Max Unit
Supply Voltage 1 (Pin1) V
Supply Voltage 2 (Pin4) V
Supply Voltage 3 (Pin8) V
Supply Current (Pin1) I
Quiescent Supply Current (Pin4) I
P1
P2
P1
P2
P3
Without Input Signal – 9 – mA
Pre–Amplifier
Input Voltage (Pin2 and Pin3) V2, V
Input Quiescent Current I2, I
3
Without Input Signal – 100 – nA
3
Flyback Generator
Output Voltage V
Flyback Output Current
I
7 (M)
Upper Value, I7 = –1A – VP3–2.2 – V
7
(Maximum Value, Pin7)
Threshold Voltage to Switch Flyback V
Flyback Pulse Time t
1–5
p FLB
ON/OFF Threshold – 1.4 – V
Vertical Output
Output Voltage V
Upper Value, I5 = –1A VP2–2.3 VP2–2 – V
5
Lower Value, I5 = 1A – 1.5 1.7 V
Upper Value, I5 = –1.4A – VP2–2.3 – V
Lower Value, I5 = 1.4A – 1.7 – V
Vertical Output Current
I
5 (P–P)
(Peak–to–Peak Value, Pin5)
Non–Linearity of Output Signal LIN – – 1 %
Pulse Circuit Output
Output Voltage V
Output Voltage for Thermal Protection Active V
Voltage to Insert Flyback Pulse on Pin9 V
Pulse Width t
1–5
p9
R
9
9
= 10kΩ 0.4 – VP1–0.4 V
PCO
Normal Condition – – 1.4 V
Deflection Open–Circuit – 50 – %
Normal Condition t
9 25 30 V
9 25 60 V
9 – 60 V
– – 10 mA
1.6 – VP1–0.5 V
– – ±1.3 A
– 250 – µs
– – 2.8 A
VP1–0.4 – – V
p FLB
– – µs
Functional Description:
Differential Input Amplifier
The differential sawtooth input signal (coming from a ramp output of the NTE7132 for example) is fed
to the input pins 2 and 3. The non–inverted signal is attached to Pin3. The vertical feedback signal
is superimposed on the inverted input signal on Pin2.
Vertical shift is applied at the inputs in a power–less way.
Flyback Generator
Signals for the flyback generator and the pulse circuit are generated in the flyback driver stage. The
flyback output consists of a Darlington transistor and a flyback diode. The flyback generator can operate in two modes:
1. An external supply voltage is applied for the short flyback time, thus power dissipation is minimum.
2. The flyback voltage is generated by doubling the supply voltage. The 100µF capacitor C2 between
Pin4 and Pin7 is charged up to VP1 during scan, using the external diode and the resistor R2. The
cathode of the capacitor C2 is connected to the positive rail during flyback. Thus, the flyback voltage is twice the supply voltage.
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