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Panasonic Semiconductor
Panasonic Semiconductor

AN5791 Datasheet

PHASE SHIFT CIRCUIT FOR CRT DISPLAYS


AN5791 Datasheet Preview


ICs for TV
AN5790N, AN5792
Horizontal Signal Processing ICs for CRT Display
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 : 2µs to 40µs
Package
AN5790N...NF-12S(12-Pin SIL plastic package)
AN5792...F-12S (12-Pin SIL plastic package with fin)
AN5790N
7.9±0.3
3.5±0.25
1.2±0.25
12
11
10
9
8
7
6
5
4
3
2
1
0.45
+
0.1
0.05
1.7±0.25
Unit : mm
1.7±0.25
12-Pin SIL Plastic Package (12-SIP)
AN5792
5.8±0.25 7.9±0.3
12
11
10
9
8
7
6
5
4
3
2
1
3.5±0.25
1.2±0.25
Unit : mm
s Block Diagram
1.7±0.25
12-Pin SIL Plastic Package with Fin (12-SIF (f))
VCC
65
1
Polarity
Switch
2
X-ray
Protector
Pre-Amp.
8
AFC
Hor. Osc.
34
12 11
PulseWidth
Adjustment
7 GND
9 10
Page 1

AN5790N, AN5792
ICs for TV
s Absolute Maximum Ratings (Ta= 25˚C)
Parameter
Symbol
Supply voltage
Supply current
Power dissipation
Operating ambient temperature
Temperature
Storage temperature
VCC
ICC
PD
Topr
Tstg
Rating
13.2
50
1140
– 20 to +70
– 40 to +150
Unit
V
mA
mW
˚C
˚C
s Electrical Characteristics (Ta= 25˚C)
Parameter
Symbol
Condition
Total circuit current
Itot
Polarity switching voltage (1)
V2-7
Polarity switching voltage (2)
V2-7
Horizonal oscillation start voltage VOSC-S (H)
Horizonal oscillation frequency
fHO (1)
Horizonal oscillation frequency fHO (2)
fHO supply voltage dependency fHO/VCC
fHO ambient temperature dependency fHO/Ta
Oscillation frequency control sensitivity
β
DC loop gain
fDC
Output pulse width
τ HO (1)
Output pulse width
τ HO (2)
Output pulse width variation to supply voltage change ∆τ HO/VCC
Output pulse width variation to temeprature change ∆τ HO/Ta
Oscillation output saturation voltage
V8-7
Oscillation output drive current
I8-7
X-ray protecting circuit operation start voltage V6-7
VCC=11V
Positive polarity signal input
Negative polarity signal input
fHO=12kHz to 19kHz
VCC=11V, C= 4400pF
VCC=11V, C= 820pF, 5600pF
fHO=15.75kHz, fHO | 9.9V– fHC | 12.1V
fHO=15.75kHz, fHO | –20˚C – fHC | 60˚C
IO= ±25µA
µ×β
VCC=11V, R= 20k, C= 6800pF
VCC=11V, R=20k, C=330pF, 18000pF
VCC= 9.9V to 12.1V
VCC=11V, Ta= – 20˚C to + 60˚C
VCC=11V, V10-7=1V
VCC=11V, V10-7=1V
VCC=11V
min
30
0
2.5
7.5
15
14
16
17.8
2
300
0.5
typ
45
15.75
40
17.6
700
19.4
0.64
max
60
0.4
5.5
16.5
60
130
260
19.3
21.2
40
5
5
2
0.75
Unit
mA
V
V
V
kHz
kHz
Hz
Hz
Hz/µA
Hz/µs
µs
µs
%
%
V
mA
V
s Application Circuit
AN5790N/AN5792
Hor. Sync. Signal
12
39pF
3
FBK Pulse Input 33k
45
+
6789
+ Output
VCC (11V)
+
20k
27k
10 11 12
2700pF
2700pF
(Styrol Cap.) (Mylar Film Cap.)
2.7k
2k
Page 2

ICs for TV
s Pin Descriptions
Pin No.
Pin name
Horizontal
1 synchronous
signal input pin
AN5790N, AN5792
Typ. waveform
Description
Equivalent circuit
4k5V
5V Pin for inputting a horizontal syn- 1
0V chronous signal.
Polarity
2 discrimination
switching pin
4k5V
Both polarities of an input signal of
DC
Pin1are made available by connect-
ing this pin to GND or setting it to
2
OPEN
Flyback pulse
3 input pin
Flyback feedback pin.
The standard value of amplitude is
1.5Vpp.
3
5.9V
4 AFC output pin
5 Supply voltage
X-ray protecting
6 circuit input pin
7 GND
8 Horizontal drive
output pin
DC Result of AFC detection.
4
DC
When a voltage of 0.75V or more is
DC
applied, no horizonal output will
not be generated.
6
200
DC
8
Current when turned ON should be
used at 300mA or less.
680
2
Page 3
Part Number AN5791
Manufactur Panasonic Semiconductor
Description PHASE SHIFT CIRCUIT FOR CRT DISPLAYS
Total Page 4 Pages
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AN5791 datasheet
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