ICs for TV
s
Overview
The AN5790N and AN5792 are the intergrated circuits
designed for CRT display horizontal signal processing cir-
cuits.
s
Features
Horizontal synchronous signal is available in both polar-
ities.
Wide range of horizontal osciallation frequency : 14kHz
to 60kHz.
Output pulse width : 2s to 40s
Package
AN5790N...NF-12S(12-Pin SIL plastic package)
AN5792...F-12S (12-Pin SIL plastic package with fin)
AN5790N, AN5792
Horizontal Signal Processing ICs for CRT Display
1
2
3
4
5
6
7
8
9
10
11
12
1.7
0.25
2.54
1.2
0.25
7.9
0.3
3.5
0.25
1.2
0.25
0.5
0.1
0.45
+ 0.1
0.05
1.7
0.25
Unit : mm
29.4
0.3
12-Pin SIL Plastic Package (12-SIP)
AN5790N
6
5
8
7
10
9
11
12
4
3
2
1
V
CC
GND
Polarity
Switch
X-ray
Protector
Pre-Amp.
AFC
Hor. Osc.
PulseWidth
Adjustment
s
Block Diagram
1
2
3
4
5
6
7
8
9
10
11
12
3.3
1.7
0.25
2.54
1.2
0.25
5.8
0.25
7.9
0.3
3.5
0.25
1.2
0.25
0.5
0.1
29.4
0.3
0.45
+ 0.1 0.05
1.7
0.25
28.0
0.3
AN5792
12-Pin SIL Plastic Package with Fin (12-SIF (f))
Unit : mm
ICs for TV
AN5790N, AN5792
Parameter
Symbol
Rating
Unit
V
CC
I
CC
P
D
T
opr
T
stg
Power dissipation
Supply current
Supply voltage
Operating ambient temperature
Storage temperature
Temperature
13.2
1140
20 to +70
40 to +150
V
mW
C
C
mA
50
s
Absolute Maximum Ratings
(Ta= 25C)
V
2-7
V
2-7
Positive polarity signal input
Negative polarity signal input
Total circuit current
Polarity switching voltage (1)
Polarity switching voltage (2)
0
2.5
0.4
5.5
V
V
Parameter
min
Condition
typ
max
Unit
Symbol
V
OSC-S (H)
f
HO
=12kHz to 19kHz
Horizonal oscillation start voltage
7.5
V
f
HO (1)
V
CC
=11V, C= 4400pF
Horizonal oscillation frequency
15
15.75
16.5
kHz
f
HO (2)
V
CC
=11V, C= 820pF, 5600pF
14
60
kHz
I
tot
V
CC
=11V
30
45
60
mA
f
HO
/V
CC
f
HO
=15.75kHz, f
HO
| 9.9V f
HC
| 12.1V
f
HO
supply voltage dependency
40
130
Hz
f
HO
/Ta
f
HO
=15.75kHz, f
HO
| 20C f
HC
| 60C
260
Hz
I
O
=
25
A
Oscillation frequency control sensitivity
16
17.6
19.3
Hz/
A
f
DC
DC loop gain
700
Hz/
s
HO (1)
V
CC
=11V, R= 20k
, C= 6800pF
Output pulse width
17.8
19.4
21.2
s
HO (2)
V
CC
=11V, R=20k
, C=330pF, 18000pF
Output pulse width
2
40
s
HO
/V
CC
V
CC
= 9.9V to 12.1V
Output pulse width variation to supply voltage change
5
%
HO
/Ta
V
CC
=11V, Ta= 20C to + 60C
Output pulse width variation to temeprature change
5
%
V
8-7
V
CC
=11V, V
10-7
=1V
Oscillation output saturation voltage
2
V
I
8-7
V
CC
=11V, V
10-7
=1V
Oscillation output drive current
300
mA
V
6-7
V
CC
=11V
X-ray protecting circuit operation start voltage
0.5
0.64
0.75
V
Horizonal oscillation frequency
f
HO
ambient temperature dependency
s
Electrical Characteristics
(Ta= 25C)
s
Application Circuit
27k
+
4.7
F
V
CC
(11V)
AN5790N/AN5792
+
+
20k
2k
2.7k
33k
39pF
2700pF
(Styrol Cap.)
2700pF
(Mylar Film Cap.)
Output
Hor. Sync. Signal
FBK Pulse Input
3.3k
0.033
F
0.018
F
0.015
F
220
F/16V
33
F/50V
1
2
3
4
5
6
7
8
9
10
11
12
ICs for TV
AN5790N, AN5792
Horizontal
synchronous
signal input pin
Polarity
discrimination
switching pin
Flyback pulse
input pin
AFC output pin
Supply voltage
X-ray protecting
circuit input pin
Horizontal drive
output pin
Both polarities of an input signal of
Pin1 are made available by connect-
ing this pin to GND or setting it to
OPEN
Flyback feedback pin.
The standard value of amplitude is
1.5Vpp.
Result of AFC detection.
When a voltage of 0.75V or more is
applied, no horizonal output will
not be generated.
Current when turned ON should be
used at 300mA or less.
1
2
3
4
6
8
Pin No.
Pin name
Typ. waveform
Description
Equivalent circuit
5
7
GND
DC
DC
DC
DC
5V
0V
8
6
4
3
2
1
5V
4k
5V
4k
5.9V
200
680
2
DC
Pin for inputting a horizontal syn-
chronous signal.
s
Pin Descriptions
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2001 MAR
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