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MITSUBISHI LINEAR INTEGRATED CIRCUIT
M52325AP
SECAM DECODER [GENERAL DESCRIPTION]
pin configuration
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.
fref / IDENT BELL OUT Vcc BAND GAP KILLER OUT GND BELL ref.
1 2 3 4 5 6 7 8
16 15 14 13 12 11 10 9
CVBS IN SAND IN BLACK ADJ. R PLL auto 1 PLL auto2 BLACK ADJ. B - (B - Y ) OUT - (R - Y ) OUT
M52325AP
[FEATURES] * Fully integrated filters * No adjustment * Few external compornents * Used with a switched capacitor baseband delay line
PLL ref.
16 PIN DIL PLASTIC PACKAGE
[STRUCRURE] Bipolar Silicon Monolithic IC
[APPLICATION] SECAM Color Television
16 PIN DIL PLASTIC PACKAGE
[QUICK REFERENCE DATA]
SYMBOL
PARAMETER
positive power supply pin3 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
MIN. 7.5 18 0.85 1.10
TYP. 8.0 24 1.0 1.00 1.24
MAX. 8.5 30 1.4 1.15 1.43
UNIT V mA Vp-p Vp-p Vp-p
Vcc Icc VDR VR-Y VB-Y
MITSUBISHI
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MITSUBISHI LINEAR INTEGRATED CIRCUIT
M52325AP
SECAM DECODER
Vcc=8.0V PLL auto2 PLL auto1
0.1F
BELL OUT
2
12
13
3
BAND GAP BANDGAP
22F
0.1 F
+
CVBS IN
4
16
ACC
BELL FILTER
AMP
PLL
BELL ref.
7
0.47 F
BELL TUNING
IDENT
DEEMPHASIS
SECAM SW.
B-Y OUTPUT
10 -(B-Y)
OUT
R-Y OUTPUT
9
-(R-Y) OUT
INTERFACE
PLL TUNING 5
KILLER OUT PLL ref.
PULSE GEN. 15 6
SAND IN GND
11
BLACK ADJ. B
1
fref / IDENT
8
0.47 F
14
BLACK ADJ. R
fig.1 M52325AP block diagram
3.85V SAND IN detection level 2.0V 1.25V
pin 15 SAND IN
BGP : 3.85V HBLK : 2.0V VBLK : 1.25V
pin 1 fref / IDENT
fref = 4.433619MHz 0.2~0.5Vp-p 4.0VDC at SECAM 1.5VDC at no SECAM
pin 9 -(R-Y) OUT
pin 10 -(B-Y) OUT
fig.2 timing waveforms
MITSUBISHI
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MITSUBISHI LINEAR INTEGRATED CIRCUIT
M52325AP
SECAM DECODER
[Absolute Maximum Rating]
(unless otherwise specified Ta = 25C,surge capacitor is 200pF) SYMBOL Vcc Pd Topr Tstg Vsurge PARAMETER positive power supply total power dissipation operating ambient temperature range storage temperature range surge voltage MIN. -20 -40 200 MAX. 11 1.09 +75 +125 UNIT V W C C V
1500
power dissipation Pd [mW]
1000
500
0
0
25
50
75
100
125
150
Ambient Temperature Ta [C] fig.3 package thermal derating curve ( maximum rating )
MITSUBISHI
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MITSUBISHI LINEAR INTEGRATED CIRCUIT
M52325AP
SECAM DECODER
[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
over 4.3V
2.5V pin15 SAND IN
0
2.6
8.7
[sec]
fig.4 sandcastle pulse
over 4.5V
2.5V pin15 SAND IN 1.8[msec] pin1 fref/IDENT fref=4.433619MHz 1.5V
fig.5 sandcastle pulse and fref signal
MITSUBISHI
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MITSUBISHI LINEAR INTEGRATED CIRCUIT
M52325AP
SECAM DECODER
[Electrical Characteristics]
note a) unless otherwise specified ; Vcc=8.0V Ta = 25C note b) unless otherwise specified ; input fref signal , pin 1 is HIGH(Vext1 = 4.75V), Vext16 = 4V
PARAMETER positive power supply supply current DC voltage pin2 DC voltage pin4 DC voltage pin11 DC voltage pin12 DC voltage pin13 DC voltage pin14 CVBS in
composite video input voltage (peak to peak value)* chrominance input voltage(peak to peak value) *
SYMBOL Vcc Icc V2 V4 V11 V12 V13 V14 A: SG1
CONDITIONS
TEST PIN
MIN. 7.5 18 1.4 4.1 3.9 4.5 4.5 4.0
TYP. 8.0 24 1.8 4.27 4.13 4.9 4.9 4.20
MAX. UNIT 8.5 30 2.2 4.5 4.35 5.5 5.5 4.4 V mA V V V V V V
3 3 2 4 11 12 13 14
V16in VCL Zin over f=4MHz note1 note2
16 16 16 -
-
1.0 167 8
1.4 300 -
Vp-p mVp-p K
input impedance BELL FILTER resonance frequency band width DEMODULATOR linearity output voltage amplitude (peak to peak value): -(R-Y) output voltage amplitude (peak to peak value): -(B-Y)
fBO fBW
A: SG0
Vcc = 7.5~9.0 V
note3
2 2
4.236 4.286 250 320
4.336 MHz 368 KHz
A: SG0
VLIN VR-Y VB-Y
A: SG1 note4 A: SG1 A: SG1
10 9 10 -
2.6 0.85 1.05 1.10 -15 -50
2.9 1.00 1.24 1.24 -
3.2 1.15 1.43 1.36 +15 +20 mV mV Vp-p Vp-p
ratio of - ( B-Y ) / - ( R-Y ) VB-Y/VR-Y calculated black level error - ( R-Y ) black level error - ( B-Y )
VRB VBB
A: SG2 A: SG2
note5 note5
9 10
MITSUBISHI
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MITSUBISHI LINEAR INTEGRATED CIRCUIT
M52325AP
SECAM DECODER
PARAMETER output DC voltage during blanking signal to noise ratio output bandwidth
* *
SYMBOL Vo S/N BWO fp fp/fo Vhc Zo1 Zo2 A: SG2 A: SG1
CONDITIONS
TEST PIN
MIN. 2.1 40 72 -
TYP. 2.8 1.5 85 3 5.2 200 -
MAX. UNIT 3.5 98 15 600 mV M V dB MHz KHz
9 10 10 10
pole frequency of * de-emphasis LPF ratio of pole and zero * frequency residual harmonic voltage
(peak to peak value) * * *
10 9 10 9 10
1
output impedance at SECAM output impedance at no SECAM SANDCASTLE PULSE vertical blanking detection level horizontal blanking detection level
pin 1 HIGH (Vext1 = 4.75V) PIN1 LOW (Vext1 = 2.25V)
VVB VHB VBG Tr Tf note 6 note 7
15 15 15
1.0 1.75 3.5 4.2 0
1.25 2.0 3.85 4.5 0.2
1.4 2.25 4.2 4.8 0.5
V V V sec sec
burst gate detection level rising edge of internal * burst gate pulse falling edge of internal burst gate pulse *
REFERENCE / IDENTIFICATION reference frequency
reference voltage amplitude (peak to peak value)
fref Vref VTH1 VTH2 IS V5S V5NS I/K Vext1 = attenuate DC voltage Vext1 = attenuate DC voltage
note 8 note 8
1 1 1
0.20 1.5 125 2.4 -46
4.4336 2.9 2.0 180 3.1 -38
0.57 3.3 235 3.6 0.2 -32
MHz Vp-p V V A V V dB
system switches detection level at SECAM system switches detection level at no SECAM sink current at SECAM pin5 voltage at SECAM pin5 voltage at no SECAM sensitivity of identification and killer
note 9 Vext5 = 1.5V sw5 : on A: SG1 A: A: SG1 attenuate amplitude note10
1 1 5 5 5
note * : These characteristics are for reference , and not guaranteed the limiting value.
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MITSUBISHI LINEAR INTEGRATED CIRCUIT
M52325AP
SECAM DECODER
[Input Signals]
SG No. SG0 signal f = 4.0~5.0MHz sweep signal conditions amplitude : 20 mVp-p B-Y burst signal fOB amplitude : 167 mVp-p = 0dB B-Y burst signal fOB amplitude : 167 mVp-p = 0dB
SG1
100/75 color bar
SG2
black/white signal
SCP
three - level sandcastle pulse f = 4.433619MHz during vertical blanking
see fig4 , fig5 see fig4 , fig5 amplitude : 300mVp-p
fref
MITSUBISHI
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MITSUBISHI LINEAR INTEGRATED CIRCUIT
M52325AP
SECAM DECODER
[Note to the characteristics]
1.
If measured in the burst period of a blue line.
a
b
2. Pin 16 is AC - coupled. Defined the impedance over f = 4MHz. 3. Measure except during the vertical blanking and burst gate pulse. An use of an active probe is advised for low capacitive loading.
C
fig.6
4. Defined as VLIN = b / a ; see fig.6
V2 V1
5. Measure the difference voltage between the blanking(V1) and the black(V2) level . Defined as VRB(VBB) = V2-V1 ; see fig.7 6. Defined as the time from rising edge detection of PAL burst gate pulse at pin15.(internal) fig.7
7. Defined as the time from falling edge detection of PAL burst gate pulse at pin15.(internal) 8. The reference signal should be stable during the vertical blanking. 9. The external supply voltage at pin1 should be exceed 0.5V. 10. Defined as the ratio between VK (i.e. the peak to peak value of the burst period of a blue line) when LOW (0 .2 V) at pin5, and 167 mVp-p the peak to peak value of the burst period of a blue line. I / K = 20 * log10 (Vk / 167 mVp-p) (dB)
MITSUBISHI
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MITSUBISHI LINEAR INTEGRATED CIRCUIT
M52325AP
SECAM DECODER
10F
+
A
2SC603
SCP
5K
2K
0.1 F
Vext16 =4V
16
15
14
13
12
11
10
9
M52325AP
1
Vcc
2
22F
+
3
0.1F
4
5
sw5
6
7
0.47F
8
0.47F
fref 150pF
2SC603
Vext5 =1.5V
8.2K
5K
Vext1
Vcc=8.0V
fig.8 measurement circuit diagram
MITSUBISHI
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MITSUBISHI LINEAR INTEGRATED CIRCUIT
M52325AP
SECAM DECODER
[Terminal Description]
PIN NUMBER
SYMBOL
DESCRIPTION
for the reference input, PAL system identification input, and SECAM killer signal output.
DC VOLTAGE
EQUIVALENT CIRCUIT
Vcc 300A 2.8V
1
10p
1
fref / IDENT
SECAM killer 180A typ. at SECAM 0A typ. at no SECAM system switches detection level ; 2.9V
2K 2K
4.3V 20K Vcc
18K
100A
2
3
Vcc
positive power supply
8V
2K 2K Vcc
20K
BELL out
bell filter output
1.7V
2
4
BAND GAP
band gap reference voltage output
4.3V
9K
4.3V
12.6K
1.8K
4
5
KILLER OUT
SECAM killer output 3.1V at SECAM 0V at no SECAM
2K 13K 15.1K 100
-
5
6
GND
ground
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MITSUBISHI LINEAR INTEGRATED CIRCUIT
M52325AP
SECAM DECODER
PIN NUMBER
SYMBOL
DESCRIPTION
bell reference filter
DC VOLTAGE
EQUIVALENT CIRCUIT
7
7
BELL ref.
The capacitor should be connected to the ground pin as close as possible to the package.
3.3V
100 20K 100 A 100 A
PLL reference filter
8
8
PLL ref.
The capacitor should be connected to the ground pin as close as possible to the package.
4.3V
200 A
-(R-Y) output
9
- ( R - Y ) OUT 1.00Vp-p at 100/75 color bar
2.8V
230A
9
-(B-Y) output
10
- ( B - Y ) OUT
1.24Vp-p at 100/75 color bar
2.8V
230A
10
14
670 225 13.6K 1.11K
black level reference for -(B-Y)
4
4.3V
11
BLACK ADJ. B
Black level error can be adjusted by external dc voltage.
4.16V
11
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MITSUBISHI LINEAR INTEGRATED CIRCUIT
M52325AP
SECAM DECODER
PIN NUMBER
SYMBOL
DESCRIPTION
DC VOLTAGE
EQUIVALENT CIRCUIT
13 12
PLL adjust voltage output2
12
PLL auto2
Capacitor between pin 12 and pin13 improves color S/N. Value of Capacitor is 0.1uFtyp.
5.0V
200 A 13 12
200 A
PLL adjust voltage output1
13
PLL auto1
Capacitor between pin 12 and pin13 improves color S/N. Value of Capacitor is 0.1uFtyp.
5.0V
200 A
200 A
black level reference for -(R-Y)
14
670 225 13.6K 1.11K
4
4.3V
14
BLACK ADJ. B
Black level error can be adjusted by external dc voltage.
4.28V
11
50
50 50
15
SAND IN
three - level sandcastle pulse input
15
100
13p 8.1K
16
CVBS IN
(2.05V)
200 A
8.1K
chrominance signal input
16
2.8V 2.5K
200 A
100 A
MITSUBISHI
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MITSUBISHI LINEAR INTEGRATED CIRCUIT
M52325AP
SECAM DECODER
[Marking]
XXXXXX M52325AP
Mitsubishi Marking
Mark Lot No.
Type Number
[Material of Terminals and Package]
Terminals Material : copper alloy Plating : solder Package Material : epoxy resin
[Weight of IC]
1.0g
[Notice]
1) Filters and demodulator are tuned during vertical blanking. So pin7 and pin8 are very sensitive to current leakage . The capacitor of pin 7 and pin8 should be low leakage and low drift type, and should be connected as close as possible to the ground pin of the package. 2) Black level error can be adjusted by tuning of variable resistors between pin 4 (or Vcc ,ground) to pin 11 and between pin4 (or Vcc ,ground) to pin 14.
MITSUBISHI
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