NTE NTE7156 Datasheet
NTE7156
Integrated Circuit
DC–Coupled Vertical Deflection Circuit
Description:
The NTE7156 is a power circuit in a 9–Lead SIP type package designed for use in 90° and 110° color
deflection systems for field frequencies of 50Hz to 120Hz. This device provides a DC driven vertical
deflection output circuit, operating as a highly efficient class G system.
Features:
D Few External Components
D Highly Efficient Fully DC–Coupled Vertical Output Bridge Circuit
D Vertical Flyback Switch
D Guard Circuit
D Protection Aaginst:
– Short–Circuit of the Output Pins (7 and 4)
– Short–Circuit of the Output Pins to V
D Temperature Protection
D High EMC Immunity Because of Common Mode Inputs
D A Guard Signal in Zoom Mode
Absolute Maximum Ratings:
DC Supply
Supply Voltage, V
P
Non–Operating 40V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating 25V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Flyback Supply Voltage, V
FB
Note 1 60V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Vertical Circuit
Output Current (Peak–to–Peak Value, Note 2), I
Output Voltage (Pin7), V
O(A)
Note 1 62V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Flyback Switch
Peak Output Current, I
M
Thermal Data
Virtual Junction Temperature, T
VJ
Operating Ambient Temperature Range, T
Storage Temperature Range, T
stg
Thermal Resistance, Virtual Junction–to–Ambient, R
Thermal Resistance, Virtual Junction–to–Case, R
Short–Circuit Time (Note 3), t
sc
Note 1. A flyback supply voltage of > 50V up to 60V is allowed in application. A 22–nF capacititor
in series with a 22Ω resistor (depending on I
nected between Pin7 and GND. The decoupling capacitor of V
tween Pin6 and Pin3. This supply voltage line must have a resistance of 33Ω.
Note 2. I
Note 3. Up to V
maximum determined by current protection.
O
= 18V.
P
P
50V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
O(P–P)
3A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
52V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
±15A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
+150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A
–20° to +75°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
–55° to +150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
thVJ–C
thVJ–A
40K/W. . . . . . . . . . . . . . . . . . . . . . . . . . .
4K/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 Hour. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
and the inductance of the coil) has to be con-
O
has to be connected be-
FB
Electrical Characteristics: (VP = 17.5V, TA = +25°C, VFB = 45V, fi = 50Hz, I
unless otherwise specified)
Parameter Symbol Test Conditions Min Typ Max Unit
DC Supply
= 400µA
I(sb)
Operating Supply Voltage V
Flyback Supply Voltage V
P
FB
Note 1 V
Supply Current I
No Load, No Signal – 30 55 mA
P
Vertical Circuit
Output Voltage Swing (Scan) V
I
O
= 0.6mA
diff
= 3A
I
O
Linearity Error LE IO = 3A
IO = 50mA
Output Voltage Swing (Flyback)
– V
V
O(A)
O(B)
Forward Voltage of the Internal
Efficiency Diode (V
O(A)
– VFB)
Output Offset Current |IOS| I
Offset Voltage at the Input of the
Feedback Amplifier (V
I(fb)
– V
O(B)
DC Output Voltage V
Open Loop Voltage Gain (V
7–4/V1–2
Open Loop Voltage Gain
, V
(V
7–4/V9–4
Voltage Ratio V
= 0)
1–2
1–2/V9–4
Frequency Response (–3dB) f
Current Gain (IO/I
) G
diff
Current Gain Drift as a Function
V
V
∆VOS T I
O
DF
I
= 0.3mA, IO = 1.5A – 39 – V
diff
IO = –1.5A, I
= 0, I
diff
= 0 – – 72 µV/K
diff
)
= 0, Note 5 – 8 – V
Note 6, Note 7 – 80 – dB
) G
O(A)Idiff
VO
Note 6 – 80 – dB
V
R
res
Open Loop, Note 8 – 40 – Hz
I
∆GC T – – 10
of Temperature
9 – 25 V
V
P
P
, V
(P–P)
(P–P)
, Note 4 – 1 3 %
(P–P)
(P–P)
diff
= 50µA to 500µA – – 30 mA
I(sb)
= 1.8V
diff
, Note 4 – 1 3 %
= 0.3mA – – 1.5 V
(P–P)
,
19.8 – – V
– 50 V
– 60 V
– 0 – dB
– 5000 –
–4
K
Signal Bias Current I
Flyback Supply Current I
I(sb)
FB
During Scan – – 100 µA
50 400 500 µA
Power Supply Ripple Rejection PSRR Note 9 – 80 – dB
DC Input Voltage V
Common Mode Input Voltage V
Input Bias Current I
Common Mode Output Current I
I(DC)
I(CM)II(sb)
bias
O(CM)
I
I(sb)
∆I
I
diff
= 0 0 – 1.6 V
= 0 – 0.1 0.5 µA
I(sub)
= 300µA
(P–P)
, fi = 50Hz,
= 0
– 2.7 – V
– 0.2 – mA
Guard Circuit
Output Current I
Output Voltage on Pin8 V
O(guard)IO
Allowable Voltage on Pin8 Maximum Leakage Current =
O
Not Active, V
Active, V
O(guard)
O(guard)
= 0V – – 50 µA
= 3.6V 1.0 – 2.5 mA
= 100µA 4.6 – 5.5 V
– – 40 V
10µA
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