NTE1632
Integrated Circuit
Vertical/Horizontal Sync Separator
Description:
The NTE1632 separates the horizontal and vertical sync pulses from the composite TV video signal
and uses them to synchronize vertical and horizontal oscillators. The NTE1632 is supplied in a
18−Lead DIP type package.
Features:
D
Horizontal sync separator & noise inverter
D
Horizontal oscillator
D
Horizontal phase detector (sync to oscillator)
D
Horizontal output stage
D
Inhibit of horizontal phase detector & video transmitter identification circuit during vertical oscil-
lator flyback
D
Stabilizer & supply circuit for staring the horizontal oscillator & output stage directly from the
mains rectifier
D
Duty factor of horizontal output pulse is 50% when flyback pulse is absent
D
Vertical sync separator
D
Vertical comparator with internal 3% precorrection circuit for vertical oscillator/sawtooth
generator
D
Vertical driver stage
D
Vertical blanking pulse generator with external adjustment of pulse duration (50Hz: 21 lines:
60Hz: 17 lines)
D
Vertical guard circuit
D
Bandgap 6.5V reference voltage for vertical oscillator & comparator
D
Synchronized vertical oscillator/sawtooth generator (synchronization inhibited when no video
transmitter is detected)
D
Time constant switch for phase detector (fast time constant during catching)
D
Slow time constant for noise only conditions
D
Time constant externally switchable (e.g. fast for VCR)
D
Second phase detector for storage compensation of horizontal deflection stage
D
Sandcastle pulse generator (3 levels)
D
Video transmitter identification circuit
D
Internal circuit for 3% parabolic precorrection of the oscillator/sawtooth generator. Comparator
supplied with precorrected sawtooth & external feedback input
Parameter
Supply:
Minimum Current Required to Start Horizontal Oscillator & Output
Stage (Pin 16)
I
16
−
>4
−
mA
Symbol
Min
Typ
Max
Unit
Parameter
Main Supply Voltage (Pin 10)
Supply Current
Input Signals:
Sync Pulse Input Voltage
(Peak−to−Peak Value; Negative Going)
Output Signals:
Horizontal Output Pulse (Open Collector) at I
11
= 40mA
Vertical Output Pulse (Emitter−Follower) at I
1
= 10mA
Ratings:
Start Current (Pin 16)
Supply Voltage (Pin 10)
Total Power Dissipation
Storage Temperature Range
Operating Ambient Temperature Range
Thermal Resistance:
From Junction to Ambient in Free Air
Supply:
Supply Current at Pin 16
Stabilized Supply Voltage (Pin 16)
Supply Current (Pin 10)
Supply Voltage (Pin 10)
Video Input (Pin 5):
Top−Sync
Top Sync Level
Sync Pulse Amplitude (Peak to Peak Value) (Note 1)
(Peak−to−Peak
Slicing Level
Delay Between Video Input & Detector Output
Noise Gate (Pin 5):
Switching Level
First Control Loop (Sync to Oscillator: Pin 8)
Holding Range
Catching Range
Control Sensitivity Video with Respect to Oscillator, Burst Key & Fly-
back Pulse (For Slow Time Constant)
(For Fast Time Constant)
Symbol
V
P
=
V
10−9
I
P
= I
10
Min
−
−
Typ
12
55
Max
−
−
Unit
V
mA
V
5−9(p−p)
0.15 to 1V
V
11−9
V
1−9
I
16
V
P
= V
10−9
T
tot
T
stg
T
amb
R
th J−A
−
−
−
−
−
<0.5
>4
−
−
−
−
−
8
13.2
1.1
V
V
mA
V
W
−55
to +150°C
−25
to +65°C
−
50
−
kW
Characteristics: I
16
= 5mA: V
p
= 12V: T
amb
= 25°C (unless otherwise indicated)
I
16
V
16−9
I
10
V
p
= V
10 9
10−9
−
−
−
−
4 to 8
8.7
55
<70
12
10 to 13.2
−
−
−
−
−
−
−
3.1
1.5 to 3.75
0.6
0.15 to 1
50
35 to 65
0.35
0.7
<1
±800
±600
to 1100
−
−
−
1
275
−
−
−
−
−
−
−
−
−
−
−
−
−
mA
V
mA
mA
V
V
V
V
V
V
%
%
µs
V
V
Hz
Hz
kHz/µs
kHz/µs
V
5 9
5−9
V
5 9( )
5−9(p−p)
−
t
1
V
5 9
5−9
∆f
∆f
Parameter
Second Control Loop:
p
(Horizontal Output to Flyback: Pin 14)
Control Sensitivity; Static (Note 2)
Control Range
Controlled Edge
Phase Adjustment (Via 2nd Control Loop; Pin 14)
Control Sensitivity
Maximum Permissible Control Current
Horizontal Oscillator (Pin 15):
Frequency (No Sync)
Frequency Spread (C
osc
= 2.2nF; R
osc
= 40kΩ)
Frequency Deviation Between Starting Point of Output Signal & Sta-
bilized Condition
Temperature Coefficient
Horizontal Output (Pin 11)
Output Voltage; High Level
Voltage at which Protection Starts
Output Voltage; Low Level
Start Condition at I
11
= 10mA
Normal Condition at I
11
= 40mA
Duty Factor of Output Signal During Starting
(No phase shift; voltage at pin 11 low)
Duty Factor of Output Signal without Flyback Pulse
Controlled Edge
g
Duration of Output Pulse (Fig 3)
Sandcastle Output Pulse (Pin 17):
Output Voltage During:
Burst Key
Horizontal Blanking
Vertical Blanking
Pulse Duration
Burst Key
Horizontal Blanking
Vertical Blanking
for 50Hz application (−I
12
: 0 to 0.1mA)
for 60Hz application (−I
12
: typ
−.2mA)
Delay Between the Start of the Sync at the Video Input & the Rising
Edge of the Burst Key Pulse
Symbol
Min
Typ
Max
Unit
∆t
d
/∆t
o
t
d
Negative
−
400
1 to 50
−
µs/µs
µs
−
±I
14
f
OSC
∆f
osc
∆f
osc
TC
−
−
−
−
−
25
<50
15625
<4
6
<8
1.10
−4k−1
−
−
−
−
−
−
µA/µs
µA
Hz
%
%
−
V
11−9
V
11 9
11−9
−
−
−
−
<13.2
0.3
0.5
0.3
0.5
65
50
45 to 55
t
d
+t
o
+ 2.5
−
−
−
−
−
−
−
V
V
V
11 9
11−9
−
−
Negative
−
−
−
V
%
%
%
µs
V
18−9
V
17 9
17−9
V
17 9
17−9
t
p
Flyback
Pulse (note
3)
−
−
−
−
>10
4.6
4.2 to 5
2.5
2 to 3
−
−
−
V
V
V
µs
−
−
−
4
−
21
17
4.9
4.5 to 5.3
−
−
−
−
−lines
−
t
2
µs
Parameter
Detector Output Current
Voltage During Noise (Note 4)
Voltage Level for In−Sync Condition
Switching Level Slow to Fast
Switching Level Must Function Active;
φ
1
Fast to Slow
Vertical Period Counter 3 periods fast
Switching Level Slow to Fast (Locking) Mute Function
Inactive
Switching Level Fast to Slow (Locking)
Switching Level for VCR (Fast Time Constant)
Without Mute Function
Video Transmitter ID Output (Pin 13)
Output Voltage Active (No Sync) at I
13
= 1mA
Output Voltage Active (No Sync) at I
13
= 5mA
Output Voltage Inactive
VCR Switching (Pin 13):
Input Current for Fast Time Constant Phase Detector
φ
1
,
with Mute
Function Active
Input Pulse Amplitude (Peak−to−Peak Value)
Input Resistance
Delay Time of Sync Pulse (Measured in
φ
1
)
Duration of Vertical Blanking Pulse (Pin 12)
for 50Hz application; 21 lines blanking
for 60H
f 60Hz application; 17 lines blanking
li ti
li
bl ki
Maximum Allowed Input Current
Vertical Sawtooth Generator (Pin 3):
Vertical Frequency (No Sync)
Frequency Spread (C
osc
= 680nF, R
osc
= 180k’ at >26V)
Sychronization Range
Input Current at V
3−9
= 6V
Frequency Shift for V
p
= 10 to 13V
Temperature Coefficient
Comparator (Pin 2):
Symbol
±I
18
V
18−9
V
18−9
V
18 9
18−9
V
±
8 9
8−9
V
18 9
18−9
V
18 9
18−9
V
18 9
18−9
V
18 9
18−9
Min
−
−
−
−
−
−
−
−
−
Typ
300
0.3
7.5
3.5
3.2 to 3.8
1.2
1.0 to 1.4
0.12
0.08 to 0.16
1.7
1.5 to 1.9
5.0
4.7 to 5.3
8.6
8.2 to 9.0
Max
−
−
−
−
−
−
−
−
−
Unit
µA
V
V
V
V
V
V
V
V
Coincidence Detector: Video Transmitter ID Circuit; Time Constant Switches (Pin 18) (See Fig 2)
V
13 9
13−9
V
13−9
V
13 9
13−9
−
−
−
−
−
−
−
−
−
−
>10
11
>7
<0.5
0.1
0.6
0.4 to 0.8
<12
2.7
1.3
0.2
>0.15 to <0.3
<0.1
<0.4
46
<4
22
<2
<0.2
1.10−4k
−1
−
−
−
−
−
−
−
−
−
−
V
V
V
I
13
V
12−9 (p−p)
R
12−9
t
o
−I
12
mA
V
kΩ
µs
mA
−
−
−
−
−
−
−
−
mA
Hz
%
%
µA
%
−
−
−I
12
f
s
∆f
S
−
I
3
∆f
S
TC
−
−
−
−
−
−
−
Parameter
Input Voltage; DC Level
AC level (Peak−to−Peak)
Input Current at V
2−9
= 6V
Sawtooth Internal Precorrection (Parabolic Convex)
Vertical Output Stage: Emitter Follower (Pin 1)
Output Voltage at I
1
= 10mA
Output Current
Vertical Guard Circuit:
Activating Voltage Levels
(Vertical Blanking Level is 2 5V)
2.5V)
Switching Level Low
Switching Level High
Symbol
V
2 9
2−9
V
2−9(p−p)
I
2
−
Min
−
−
−
−
−
−
Typ
4.4
4.0 to 4.8
1.6
<2
3
3.6
3.2 to 5
<20
Max
−
−
−
−
−
−
Unit
V
V
µA
%
V
1 9
1−9
I
1
V
mA
V
2 9
2−9
−
−
3
5.7
5.3 to 6.1
−
−
V
V
2 9
2−9
V
Note 1 Up to 1V peak−to−Peak the slicing level is constant; at amplitudes exceeding 1V Peak−to−
Peak, the slicing level will increase.
Note 2 t
d
= delay between negative transient of horizontal output pulse and the rising edge of the
flyback pulse. t
o
= delay between the rising edge of the flyback pulse and the start of the
current in
φ
1
(pin
8).
Note 3 The duration of the flyback pulse is measured at the input switching level which is about 1V
(t
f1
).
Note 4 Depends on DC level at pin 5; value given applicable for V
5−9
∼
5V.
Pin Connection Diagram
Vertical Drive
Vertical Feedback
Vertical Frequency
Adjust
Vertical Sync
Separator
Video Input
Horizontal Sync
Separator
Sync Slicer
Slow Phase Detector
GND
1
2
3
4
5
6
7
8
9
18
17
16
15
Coincidence
Detector
Sandcastle Output
Start Circuit
Stabilizer
Horizontal
Frequency Adjust
Phase Detector
Video Transmitter
ID & Mute Output
Horizontal Flyback
18
10
1
9
.250
(6.35)
.150
(3.8)
.870 (22.1) Max
NTE1632
14
13
12
11
10
.100 (2.54)
Horizontal Drive
V
CC
.800 (20.3)
.125 (3.17) Min
