Mitsubishi M52325AP Datasheet
[GENERAL DESCRIPTION]
The M52325AP is designed for SECAM chrominance
decoding.The IC should preferably be used in conjunction
with PAL / NTSC signal processor M52340SP and the
switched capacitor baseband delay line.
It consists of a bell filter,a demodulator and an identification
circuit. The IC needs no adjustment and few external
components are required. A signal with highly stable
reference frequency is required for the calibration, and
a three - level sandcastle pulse for blanking and burst gating.
[FEATURES]
MITSUBISHI LINEAR INTEGRATED CIRCUIT
M52325AP
SECAM DECODER
pin configuration
fref / IDENT
BELL OUT
Vcc
BAND GAP
SACAM KILLER OUT
GND
BELL ref.
PLL ref.
1
2
M52325AP
3
4
5
6
7
CVBS IN
16
SAND IN
15
14
BLACK ADJ. R
13
PLL auto 1
PLL auto2
12
11
BLACK ADJ. B
- (B - Y ) OUT
10
- (R - Y ) OUT
98
• Fully integrated filters
• No adjustment
• Few external compornents
• Used with a switched capacitor baseband delay line
[STRUCRURE]
[APPLICATION]
Bipolar Silicon Monolithic IC
SECAM Color Television
[QUICK REFERENCE DATA]
SYMBOL PARAMETER MIN. TYP. MAX. UNIT
Vcc
positive power supply
pin3
16 PIN DIL PLASTIC PACKAGE
16 PIN DIL PLASTIC PACKAGE
7.5 8.5
8.0 V
Icc
VDR
VR-Y
VB-Y
supply current
pin3
input dynamic range
pin16
-(R-Y) output voltage amplitude
(peak to peak value) ;pin9
-(B-Y) output voltage amplitude
(peak to peak value) ;pin10
MITSUBISHI
18
-
0.85
1.10
24 mA
1.0 Vp-p
1.00
1.24
30
1.4
1.15
1.43
Vp-p
Vp-p
1 - 13
MITSUBISHI LINEAR INTEGRATED CIRCUIT
M52325AP
SECAM DECODER
CVBS
IN
BELL
ref.
16
7
0.47µ F
ACC
BELL
TUNING
INTERFACE
1
fref /
IDENT
BELL
FILTER
5
KILLER
OUT
BELL
OUT
PLL
auto2
2 3
AMP
IDENT
PLL
TUNING
8
PLL
ref.
0.47µ F
0.1µ F
PLL
PULSE
GEN.
15
PLL
auto1
1312
DEEMPHASIS
SAND
IN
6
GND
SECAM
SW.
0.1µF
BANDGAP
B-Y
OUTPUT
R-Y
OUTPUT
14
BLACK
ADJ. R
Vcc=8.0V
+
22µF
4
10
9
11
BAND
GAP
-(B-Y)
OUT
-(R-Y)
OUT
BLACK
ADJ. B
pin 15
SAND IN
pin 1
fref / IDENT
pin 9
-(R-Y) OUT
pin 10
-(B-Y) OUT
fig.1 M52325AP block diagram
3.85V
2.0V
1.25V
fig.2 timing waveforms
SAND IN detection level
BGP : 3.85V
HBLK : 2.0V
VBLK : 1.25V
fref = 4.433619MHz
0.2~0.5Vp-p
4.0VDC at SECAM
1.5VDC at no SECAM
MITSUBISHI
2 - 13
[Absolute Maximum Rating]
(unless otherwise specified Ta = 25°C,surge capacitor is 200pF)
SYMBOL PARAMETER MIN. MAX. UNIT
MITSUBISHI LINEAR INTEGRATED CIRCUIT
M52325AP
SECAM DECODER
Vcc
Pd
Topr
Tstg
Vsurge
1500
1000
positive
power supply
total
power dissipation
operating ambient
temperature range
storage temperature
range
surge voltage
-
-
-20
-40
±200
11
1.09
+75
+125
-
V
W
°C
°C
V
500
power dissipation Pd [mW]
0
0 25 50
fig.3 package thermal derating curve ( maximum rating )
MITSUBISHI
75
Ambient Temperature Ta [°C]
100
125
150
3 - 13
MITSUBISHI LINEAR INTEGRATED CIRCUIT
M52325AP
[Note to Electrical Characteristics Measurement]
This IC needs a three - level sandcastle pulse at pin 15. (see fig.4 ,fig5)
And the reference signal should be highly stable for frequency and amplitude
during the vertical blanking period.
pin16
CVBS IN
SECAM DECODER
pin15
SAND
IN
over 4.3V
2.5V
pin15
SAND IN
0 2.6 8.7 [µsec]
fig.4 sandcastle pulse
over 4.5V
2.5V
1.5V
pin1
fref/IDENT
fig.5 sandcastle pulse and fref signal
MITSUBISHI
1.8[msec]
fref=4.433619MHz
4 - 13
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