The M52335SP is a semiconductor integrated circuit thatintegrates
NTSC system color TV signal processing functions into a single
chip. It contains video IF, sound IF, picture, color, on-screen
character display and deflection signal processing functions.
Combining the IC with a simple output stage using a tuner and
transistors provides rational NTSC system color TV set design.
FEATURES
Large-scale single-chip integration provides set rationalization,
high reliability and less power dissipation.
PLL
-employed full sync detector circuit is used as a video detecto
circuit to improve characteristics such as DG, DP, 920kHz beat
and cross color.
A quadrature detector circuit is used as a sound IF FM detector
to simplify external circuits and improve linearity.
Coilless AFT.
Horizontal oscillator is obtained by counting down from x32
horizontalfrequencyoscillator usinga ceramicoscillator,
requiring no adjustment of horizontal free run frequency.
Vertical oscillator is obtained by counting down double horizontal
frequencyoscillatorgenerated by horizontal count-down,
requiring no vertical sync adjustment. Using a 2-wind system
provides high noise resistance capability.
Double AFC is used as a horizontal circuit to reduce horizontal
jitter in a weak electric field and screen distortion caused by
luminance change.
Also, the sync detector circuit allows use as a detector signal as
for sound muting or automatic tuning.
Built-in black expansion circuit
Built-in Y-delay line circuit.
Built-in on-screen character display circuit.
DCvoltagecontrol isapplied to picturequality, contrast,
luminance, color saturation, tint and sound volume.
Measure the voltage at output in the no input state.
51
VO51
1. Enter SG 1 at 90dBµ.
2. Measure the amplitude at output .
51
Vin min.
1. Lower the SG 3 level. Represent Vin as an input level at which it
is 3dB lower than the Vo51 measured value.
Vin max.
1. Enter SG 4 at 90dBµ.
2. Define the output level as VA.
51A
3. Raise the SG 4 level. Represent Vin as an input level at which
the output level is 3dB lower than VA.
Vin max. = 20 log
51A
measured value
VA
(dB)
BW
1. Enter SG 10. Adjust f2 so that a 1MHz beat component can
appear at output .
2. Raise the f2 frequency. Measure a frequency which is -3dB
lower than the 1MHz component.
BW = (frequency of -3dB) - 58.75MHz (MHz)
IM
1. Enter SG 11. Apply voltage so that output is as shown in
the figure.
2. Calculate level difference between 920kHz and 3.58MHz at
51
output .
IM = 20 log
51
5
920kHz component
3.58MHz component
51
(dB)
V50H,V50L, µAFT
V50H, V50L and µAFT are shown below.
V
50H
50
Pin
5.5V
3.5V
57.75MHz58.75MHz 59.25MHz
Standard µAFT = (mV/kHz)
(5.5-3.5) x 10
∆fkHz
∆f
V50L
f
3
V50D1,V50D2,V50D3
Use no signal, fo-2.5MHz, fo+1MHz and defeat SW to confirm that
output goes to 4.4V.
50
V50M
1. Enter SG 1. Lower the input level from 80dBµ.
2. Represent V50M as an input level at which voltage of output is
50
center (4.4V).
V52H
1. Enter SG 11. Apply 2.0V to .
2. Measure voltage .
52
6
V52L
1. Enter SG 10. Apply 4.0V to .
2. Measure voltage .
52
6
LIM
Decrease the SG 19 level. At test point 3, measure an input level
when a 400Hz component goes down 3dB lower than parameter
S2. AF direct signal voltage VOAF.
51
OUT
1.75V
S/N
1. Enter SG 2. Measure a rms value of output signal.
51
2. Standard
51 measured value (VP-P) x 10
S/N = 20 log
Vo
measured value (m Vrms)
3
x 0.7
(dB)
AMR
At test point 3, measure a 400Hz component and define it as Vam.
Standard value
AMR = 20 log (dB)
ATT
1. Measure a 400Hz component at output .
2. Standard value
ATT = 20 log (dB)
VOAF (m Vrms)
Vam (mVrms)
4
Vo4 max.
measured value
Page 11
MITSUBISHI ICs (TV)
M52335SP
NTSC SYSTEM SINGLE-CHIP COLOR TV SIGNAL PROCESSOR
GAF
4 max.
ATT = 20 log (dB)
Vo
measured value
S/N AF
1. Measure noise within the range of 20Hz to 100kHz at output .
2.
S/N AF = 20 log
STH
Enter SG 17. Measure output when AV SW is set to EXT
Vo4 max.
measured value (dB)
4
(2A=1.1V).
4
Iss
Increase the current of constant current source Iss. Measure a
current value of Iss when the horizontal frequency at output is
20
pulled in from free run.
V12 min.
Increase voltage from about 3V. Measure voltage applied
when horizontal oscillator waveforms begin to appear at (about
12
12
20
15kHz).
fPHL, fPHH
1. Lower the frequency of input signal SG B to make the input
waveform asynchronous to output waveform at pin .
20
2. Raise the input frequency. Measure the frequency at the
moment when the input waveform begin to synchronize with
output waveform . Define the frequency as lower pull-in
20
frequency fPHL.
3. Measure upper pull-in frequency fPHH in the same manner.
4. Represent the difference from reference value of 15.734kHz.
V20H,V20L,TH
V20H, V20L and TH are shown below.
TPRO
Raise the voltage applied to gradually. Represent TPRO as the
voltage at which output waveform at pin is as shown below.
Make sure that the voltage applied to is opened and retained.
16
20
GND
At VPRONormal
16
Y max.
Enter SG F. Measure the amplitude of output .
22
GY
1. Enter SG G. Measure the amplitude of output .
2. GY = 20 log (dB)
measured value mV
200mVP-P
P-P
22
GY min., GY max.
1. Enter SG G. Measure the amplitude of output . Define the
amplitude as VA or VB.
2. GY min. = 20 log (dB)
GY max. = 20 log (dB)
GY measured value (mVP-P)
GY measured value (mVP-P)
VA (mVP-P)
V
B (mVP-P)
22
VBRT norm,VBRT L,VBRT H
Enter SG A. Measure the level given below.
2Vo-p
Output waveform at pin
V20H
TH
V20L
20
GND
VBRT norm, VBRT L, VBRT H
GND
Gp
1. Define as VA the output signal voltage at the entry of SG G,
as VB the voltage at the entry of SG J.
V
2. G
P = 20 log (dB).
A
VB
22
Page 12
MITSUBISHI ICs (TV)
M52335SP
NTSC SYSTEM SINGLE-CHIP COLOR TV SIGNAL PROCESSOR
GT norm., GT min., GT max.
1. Change the applied voltage to 4.5V, 6.5V and 2.5V. Define
output signal measured values as VA, VB and VC,
22
40
respectively.
2. GT min. = 20 log (dB), GT max. = 20 log (dB)
VB
VA
VC
VA
GT norm. (dB) is represented by a change of VB (dB) at parameter
Y9 GP measurement.
fB [Y]
Measure the SG K frequency which is 3dB lower than the VA value
at parameter Y9 GP measurement.
VBLK V,VBLK TV
VBLK V and VBLK TV are shown below.
VBLK V
TBLK TV
GND
VBLK H
Raise the applied voltage 22A gradually. Represent VBLK H as a
voltage level at which output signal 25A disappears.
22
AVTH
1. Enter SG G into H input.
2. Apply voltage of 2.0V to 2A. Measure the amplitude of output
waveform at pin .
3. Apply voltage of 1.1V to 2A. If the output at pin becomes DC,
43
43
everything will be O.K.
AVTV,AVEXT
Enter SG F (-6dB) into inputs H and G. Measure the amplitudes of
output waveform at pin when the voltage applied to
432A
becomes OPEN and goes to 1.1V.
ACC-1,ACC-2
1. Define output signal voltages as VA,VB and VC,
respectively, when changing the SG L input level to 0, -20 and
+6dB.
ACC-1 = 20 log (dB)
2.
ACC-2 = 20 log (dB)
VB
VA
VC
VA
25A
Vik
Lower the SG L input level. Represent Vik as an input level when
output signal disappears.
25A
YDL 1, YDL 2
Enter SG T into . Measure the delay time of output waveform at
22
pin to the entry.
A
F
50IRE
50IRE
F Input Waveform
BA
YDL
B
OutputWaveform
at oin
F Input Waveform
Output Waveform
at pin
Represent by (nsec)
50IRE
50IRE
22
22
A B
Black stretch threshold
1. Set SG U at 200kHz, V1=0.35V and V2=0.1V. Enter them from
F. Define the range from the pedestal to the white peak as 100
IRE.
2. Lower V2 from about 75 IRE gradually. Measure an operating
point which causes black expansion.
Vok
Enter SG Q. Measure output signal voltage .
25A
Cnorm.
Enter SG L. Measure output signal voltage when the voltage
applied to is 5.1V.
36
25A
CS min., CS max.
V
VB
21
A
1. Change the voltage applied to to 0V and 9.0V. Define output
signal voltages as VA and VB, respectively.
2. CS min. = 20 log (dB)
CS max. = 20 log (dB)
25A
C norm. measured value
C norm. measured value
Cu min. , Cu max.
V
VB
36
A
1. Change the voltage applied to to 2.5V and 9.0V. Define
output signal voltages as VA and VB, respectively.
2. Cu min. = 20 log (dB)
Cu max. = 20 log (dB)
25A
C norm. measured value
C norm. measured value
Page 13
MITSUBISHI ICs (TV)
M52335SP
NTSC SYSTEM SINGLE-CHIP COLOR TV SIGNAL PROCESSOR
fPC L,fPC H
1. Enter SG M. Lower burst and chroma frequencies (fsb=fsc)
properly to set them free from pull-in.
2. Raise the frequencies gradually. Measure the input pull-in
frequency.
3. Measure the upper pull-in frequency in the same manner.
4. Represent a standard value by a difference from reference
value of 3.579545MHz.
fPC
fPC = fPC L +fPC H (kHz)
CLB-Y,CLR-Y,CLG-Y
1. Enter SG L of 0dB.
24
2. Measure a carrier leak at output pins , and when
applying voltages of 4.5V and 5.1V to and .
Output Waveform at pin
CLG-Y
23
3621
CL
R-Y
23
25
1. Enter SG L. Measure output signal voltages 23A, 24A and 25A.
2.
R-Y
B-Y
G-Y
B-Y
Output signal voltage 23A
- N =
Output signal voltage 25A
Output signal voltage 24A
- N =
Output signal voltage 25A
∠R-Y-N, ∠G-Y-N
Define the output phase of B-Y output (25A) as a reference.
Measure the phase differences of R-Y output (23A) and G-Y output
(24A).
Measurement notes
Note 1: For horizontal blanking pulse timing and width, adjust the
variable resistor of a one-shot multi-vibrator as shown
below.
Horizontal output
at pin
20
8µs
Horizontal
Blanking Pulse
Output Waveform at pin
Output Waveform at pin
24
B-Y
CL
25
SSY
Enter SG G into input F. Turn on S36. Measure the amplitude of
output signal at scanning period.
22
SSC
Enter SG G into input E. Turn on S36. Measure the amplitude of
output signal 25A.
SSV
Measure the maximum value of output signal when turning on
S36.
R-Y G-Y
- N, - N
B-Y B-Y
18
12µs
Decide 8µs using the pin variable resistor of TTL IC
15
M74LS221P. Also, decide 12µs using the pin 7 variable
resistor.
Note 2: Coil adjustment
VCO coil
1. Set conditions of measurement to measurement parameter
"V50D2".
2. Enter CW with Fo=58.75MHz and Vi=90dBµ from input
pin A. Set S49 to 1.
3. Adjust the VCO coil so that the DC of AFT OUT (pin 50)
becomes 1/2Vcc (4.4V).
Output Waveform
50
at pin
4.4V
58.75MHz
Page 14
NTSC SYSTEM SINGLE-CHIP COLOR TV SIGNAL PROCESSOR
SIF coil
Set conditions of measurement to measurement parameter
"V04". Adjust the SIF coil so that the output waveform is
maximized and the distortion is minimized.
Output waveform
at pin
4
4.0V
Note 3: Video measurement note
At video measurement, always set the conditions given
below.
1. Enter signal SG A into input D.
2. Set switches S2B, S5, S10, S12, S13, S16, S20, S22 and
S44 to ON.
3. Open other switches unless otherwise noted.
MITSUBISHI ICs (TV)
M52335SP
Note 4: Chroma measurement note
At chroma measurement, always set the conditions glven
below.
1. Enter signal SG A into input D.
2. Set switches S2B, S5, S10, S12, S13, S14, S16, S20, and
S44 to ON. Set S34 to 2.
Pin No.NameVoltage and wave informationPeripheral circuit of pinsDescription of function
The input impedance is
18kΩ. Add a bias to
outside as shown right
9V
2.4k
for use.
1
2
EXT AUDIO
IN
SOUND DET
COIL
3.25V
2.5V
4.7k
3.9k
25k
25k
0.01µF
30p
10k
20p
5V
10k
18k
TV (Without Y-DL)
TV (With Y-DL)
EXT (With Y-DL)
2.4k
4.5V2k
The FM detector is a
10k
quadrature detector and
externally connects a
tank coil or discriminator.
10k
This is also used as an
5p
3V
AV switching pin to apply
voltagethrougha 10kΩ.
GND to EXT (Y-DL)
OPEN to TV (Y-DL)
Vcc (5V) to TV (S input)
Sound direct output pin.
For de-emphasis,connect
a capacitor between this
2.4k
pin and GND.
3
SOUND DET
OUT
(Varying with coil position)
3.75V
18k
2.4k
4.5V2k
Sound output pin through
ATT.
23k
4
AF OUT
4.2V
9k
5.0V
Page 20
MITSUBISHI ICs (TV)
M52335SP
NTSC SYSTEM SINGLE-CHIP COLOR TV SIGNAL PROCESSOR
DESCRIPTION OF PIN (cont.)
Pin No.NameVoltage and wave informationPeripheral circuit of pinsDescription of function
Dynamic AGC circuit is
used to improve AGC
response characteristics.
Set a filter constant to
avoid a sag around
5
IF AGC
FILTER
4.4 to 1.5V
1k
7.5k
70dBµ.
IF AGC Voltage
4.4V
50dBµ 70dBµ 100dBµ
IF Input
RFAGC delay point is set
by the voltage applied to
this pin.
1k
6
7
RF AGC
DELAY ADJ.
2k
GND-1
(VIF SIF)
Input resistance is 1kΩ.
Input capacitance is 7pF.
8
9
VIF IN
1.5V
80
1.2k
1.2k
320320
1.5V
10
VCC-1
(VIF SIF)
5V
11
Pin
Output
fc frequency
The f characteristic of a
loop in the locked state
11
APC FILTER
3V
can be set by R.
14k
R
3V
60p
3.4k
Normally, set fc in the
range of 100 to 150kHz.
3.4k
V11
fo
IF frequency
Page 21
MITSUBISHI ICs (TV)
j
j
M52335SP
NTSC SYSTEM SINGLE-CHIP COLOR TV SIGNAL PROCESSOR
DESCRIPTION OF PIN (cont.)
Pin No.NameVoltage and wave informationPeripheral circuit of pinsDescription of function
12
13
H. VCC
AFC FILTER
6.25V
24k
3k
R
6.25V
Powersupplypinforhorizontal
and
v
erticalsystems.Itscurrent
is about 34mA
Horizontal AFC filter pin.
Action against VCR
skews can be taken by
increasing an external
resistor R to provide a
faster response speed.
However, horizontal
itters in a weak electric
field will increase.
.
Flyback pulse is sliced
on 4V to generate an
AFC2 detector pulse.
100
Remember that any peak
around 4V may cause
itters. The screen moves
rightward by integrating
14
AFC FBP IN
FBP
4V
1.35k
and entering the flyback
pulse.
CSB500F18 is used.
300300
300
15
32fH OSC
3.8V
500F18
2kCSB
300
Applying voltage of 0.7V
or more operates the X-
2k1.2k
16
X-RAY
PROTECT
2k2k
1.2k
ray protector. Connect to
GND if not using the pin.
Page 22
MITSUBISHI ICs (TV)
f
M52335SP
NTSC SYSTEM SINGLE-CHIP COLOR TV SIGNAL PROCESSOR
DESCRIPTION OF PIN (cont.)
Pin No.NameVoltage and wave informationPeripheral circuit of pinsDescription of function
Voltage goes up if a sync
signal is entered and
horizontal AFC is locked;
otherwise, the voltage
goes down. Therefore,
17
COINCIDENCE
OUT
8V (Synchronous)
to
0V (Asynchronous)
1k
the pin can be also used
as a MUTE detector. At
that time, pay attention to
high impedance.
Pulse as shown below is
output.
60k
18
19
V.OUT
VCC-2 (VCJ)
9V
30k
Power supply
RF AGC and SIF DET.
V
8.2V
0V
10H
or VC,AFT,
Horizontal pulse of 24µs
wide is output. It is open
2k200
20
H. OUT
200
33k
emitter output.
3.8V
0V
Color control pin. Its
voltage goes to 0V when
service SW is ON.
5.6k640
21
COLOR
CONT.
4.5V
200
10k
4.5V
Service SW
Page 23
MITSUBISHI ICs (TV)
M52335SP
NTSC SYSTEM SINGLE-CHIP COLOR TV SIGNAL PROCESSOR
DESCRIPTION OF PIN (cont.)
Pin No.NameVoltage and wave informationPeripheral circuit of pinsDescripition of function
Video output pin. When a
flyback pulse is entered
10k200
600
30k
22
-Y OUT
10k
2k
1k
60
for blanking from outside,
a blanking pulse is
entered internally and a
chroma symbol is also
blanked. The blanking
threshold voltage is 7.1V.
Open emitter output with
maximum current of
about 5mA.
23
24
25
R-Y OUT
G-Y OUT
B-Y OUT
5.4V
Input impedance is
50kΩ. Apply voltage of
2.5V or more when
inserting a character
signal.
26
27
28
OSD B
OSD G
OSD R
Vth
2.5V
300
50k
Tint control pin.
12k
29
TINT CONT.
4.5V
2k
4.5V
Page 24
MITSUBISHI ICs (TV)
M52335SP
NTSC SYSTEM SINGLE-CHIP COLOR TV SIGNAL PROCESSOR
DESCRIPTION OF PIN (cont.)
Pin No.NameVoltage and wave informationPeripheral circuit of pinsDescription of function
Applying voltage of 2.5V
or more causes blanking.
30
FAST BLK IN
Vth
2.5V
300
0V
50k
Cap challenge is
changed by R. As R is
decreased, the cap
challenge becomes
narrower but phase jitters
are reduced.
4k
31
APC FILTER
6.5V
R
666666
Use XTAL of series
capacitance type.
300300
1k
32
CHROMA
OSC
6.8V
1k
Such as M351T01
3p
1k
As R is decreased,
chroma output increases
VCC
R
33
ACC FILTER
2k
1.6k
but ACC is not activated
smoothly.
3k
22k
Page 25
MITSUBISHI ICs (TV)
M52335SP
NTSC SYSTEM SINGLE-CHIP COLOR TV SIGNAL PROCESSOR
DESCRIPTION OF PIN (cont.)
Pin No.NameVoltage and wave informationPeripheral circuit of pinsDescripition of function
Pin holding the most
dark part of a video
signal. As R is increased,
R
34
BLACK
HOLD
About 3.2V
1.5k1.5k
the black peak is held;
contrarily, the peak gets
closer to an average.
3751.15k
2k
To decrease killer
sensitivity, connect a
several M of resistor
between the pin and
4.7k
35
KILLER
FILTER
7.6V at signal input
3.2k1.7kR
GND.
Can be controlled by
5.1V center.
40k
36
CONTRAST
CONT.
Normally 4.8V Applied
from outside
5k
200
20k
37
GND-2
(VCD)
Chroma signal standard.
Make an entry at
P-P. This pin is also
100
30p
200mV
used as a brightness
control pin. DC
20k
38
CHROMA IN/
BRIGHTNESS
4.5V
20k
33p
40k
4.5V
670
reproduction ratio is
100%.
Page 26
MITSUBISHI ICs (TV)
M52335SP
NTSC SYSTEM SINGLE-CHIP COLOR TV SIGNAL PROCESSOR
DESCRIPTION OF PIN (cont.)
Pin No.NameVoltage and wave informationPeripheral circuit of pinsDescription of function
Used to connect a hold
capacitor.
3.9k1k
39
PEDESTAL
CLAMP
About 2.2V
1.07k
1.4k1.2k
Sharpness control pin.By
increasing voltage, the
1.5k
15k
10k
40
VIDEO TONE
CONT.
4.5V
6.2k
4.5V
pin is set to soft side.
Make an entry at low
input impedance to avoid
pedestal clamp.
Standard coupling
capacitor is 0.1µF. Make
an entry at 0.5VP-P.
41
42
Y IN
EXT VIDEO
IN
3.3V
39k
39k
5V
Make an entry at 1V
5k
150
P-P.
Page 27
MITSUBISHI ICs (TV)
cs
M52335SP
NTSC SYSTEM SINGLE-CHIP COLOR TV SIGNAL PROCESSOR
DESCRIPTION OF PIN (cont.)
Pin No.NameVoltage and wave informationPeripheral circuit of pinsDescription of function
Output at 1.5VP-P.
43
Y SW OUT
2.5V
1.125k
eparationof emitter
Syn
input type. Vertical sync
separation is done inside
the IC.
1k
44
SYNC IN
6.6V
7.35V
Make an entry at 1VP-P.
150
45
TV IN
2.5V
20k
2.5V
Referencetuning
capacitance is 27pF. As
the capacitance is
850
850
decrease, the variable
range becomes wider but
46
47
VCO COIL
4V
stability becomes worse.
Page 28
MITSUBISHI ICs (TV)
M52335SP
NTSC SYSTEM SINGLE-CHIP COLOR TV SIGNAL PROCESSOR
DESCRIPTION OF PIN (cont.)
Pin No.NameVoltage and wave informationPeripheral circuit of pinsDescription of function
Volume control pin.
20p
15k
48
SIF IN/ATT
4.5V
10k
29.3p
10k
2.4k
4.5V
Applying voltage of 2.5V
or more defeats AFT.
49
AFT
DEFEAT
23.3k
10k
Current output type. As
load resistor R is
increased, detector
sensitivity becomes
R
50
AFT OUT
8.2 to 0.5V
R
1k
higher but offlot becomes
larger.
Output at 1.4VP-P. 1.75V
is applied to sink tip.
7.5k
51
VIDEO OUT
12.5k
32.5k
2.7k250
Page 29
MITSUBISHI ICs (TV)
M52335SP
NTSC SYSTEM SINGLE-CHIP COLOR TV SIGNAL PROCESSOR
DESCRIPTION OF PIN (cont.)
Pin No.NameVoltage and wave informationPeripheral circuit of pinsDescription of function
Current output type.
Max. 0.4mA.
0.4mA
52
RF AGC OUT
50
0.4mA
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