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MITSUBISHI ICs (TV)
M52760SP
PLL-SPLIT VIF/SIF IC DESCRIPTION
The M52760SP is IF signal-processing IC for VCRs and TVs. It enable the PLL detection system despite size as small as that of conventional quasi-synchronous VIF/SIF detector, IF/RF AGC, SIF limiter, FM detector and EQ AMP.
RF AGC DELAY AFT OUT 1 2 3 4 5 6 7 8 9 20 EQ F/B 19 APC FILTER 18 VIDEO OUT 17 Vreg. OUT 16 VCO COIL 15 VCO COIL 14 Vcc 13 QIF OUT 12 AFT SW/NPSW 11 LIMITER IN
PIN CONFIGURATION (TOP VIEW)
FEATURES
RF AGC OUT VIF IN VIF IN GND QIF DET IN IF AGC FILTER NFB
* * * * *
Video detection output is 2VP-P. It has built-in EQ AMP. The package is a 20-pin shrink-DIP, suitable for space saving. The video detector uses PLL for full synchronous detection circuit. It produces excellent characteristics of DG, DP, 920kHz beat, and cross color. Dynamic AGC realizes high speed response with only single filter. Video IF and sound IF signal processings are separated from each other. VCO output is used to obtain intercarrier. This PLL-SPLIT method provide good sound sensitivity and reduces buzz. As AFT output voltage uses the APC output voltage, VCO coil is not used. Audio FM demodulation uses PLL system, so it has wide frequency range with no external parts and no adjustment. QIF AMP has a fixed gain, and good characteristic for NICAM.
M52760SP
AUDIO OUT 10
* * *
Outline 20P4B
APPLICATION
TV sets, VCR tuners
RECOMMENDED OPERATING CONDITION
In case of Vcc and Vreg. out short Supply voltage range....................................................4.75 to 5.25V Recommended supply voltage...................................................5.0V In case of Vreg. out open Supply voltage range......................................................8.5 to 12.5V
BLOCK DIAGRAM
EQ F/B 20 APC FILTER Vreg. OUT VCO COIL VIDEO OUT VCO COIL 19 18 17 16 15 Vcc 14 Vcc REG VCO AFT QIF DET EQ AMP VIDEO DET Inter Split LIM AMP QIF OUT LIMITER IN AFT SW/NPSW 13 12 11
APC QIF AMP FM DET
RF AGC IF AGC VIF AMP AF AMP
1
2
3
4
5 VIF IN
6 GND
7
8
9
10 AUDIO OUT
RF AGC DELAY RF AGC OUT AFT OUT VIF IN
QIF DET IN NFB IF AGC FILTER
1
MITSUBISHI ICs (TV)
M52760SP
PLL-SPLIT VIF/SIF IC ABSOLUTE MAXIMUM RATINGS (Ta=25C, surge protection capacitance 200pF resistance 0 , unless otherwise noted)
Symbol VCC Vreg. OUT Pd Topr Tstg Surge Parameter Supply voltage1 Supply voltage Vreg. OUT Power dissipation Operating temperature Storage temperature Surge voltage resistance Ratings 13.2 6 1524 -20 to +75 -40 to +150 200 Unit V V mW C C V
AMBIENT OPERATING CONDITION (Ta=25C, unless otherwise noted)
Supply voltage IN CASE OF VCC AND Vreg. OUT SHORT IN CASE OF Vreg. OUT OPEN Supply voltage range 4.75 to 5.25V 8.5 to 12.5V Recommended supply voltage 5.0V -
ELECTRICAL CHARACTERISTICS (VCC=5V, Ta=25C, unless otherwise noted)
Symbol VIF section ICC1 ICC2 VCC2 V18 Vo det
Video S/N
Parameter
Test circuit
Test point
Input point
Input SG
Measurement condition switches set to position 1 unless V7 V8 V12 otherwise indicated
External power supply
Limits Min. Typ. Max.
Unit
Circuit current1 VCC=5V Circuit current2 VCC=12V Vreg voltage Video output DC voltage Video output voltage Video S/N Video band width Input sensitivity Maximum allowable input AGC control range input IF AGC voltage Maximum IF AGC voltage Minimum IF AGC voltage Maximum RF AGC voltage Minimum RF AGC voltage RF AGC Operation voltage Capture range U Capture range L Capture range T VCO SW ON Drift AFT sensitivity
1 1 1 1 1 1 1 1 1
-
A A TP17
VIF IN VIF IN -
SG1 SG1 - - SG1 SG2 SG3 SG4 SG5
-
- - - - - - - - - - - - - -
- - - 0 - -
Vari able
5 5 5 - - - - - - - - - - -
VCC=5V SW17=1, SW14=2 VCC=12.5V SW14=SW17=2 VCC=12.5V SW7=2 SW8=2 SW18=2 SW8=2
33 33 4.60 3.2 1.8 51 7.0 - 101 50 2.9 4.0 2.2 4.2 8.0 11.0 - - - 89 1.0 1.8 3.1 0 20
46 46 4.95 3.5 2.1 56 9.0 48 105 57 3.2 4.4 2.4 4.7 8.9 11.9 0.1 0.2 0.2 92 1.7 2.4 4.1 +20 30
59 59 5.30 3.8 2.4 - - 52 - - 3.5 - 2.6 - - - 0.5 0.7 0.7 95 - - - +40 60
mA mA V V VP-P dB MHz dB dB dB V V V
TP18A - TP18A VIF IN TP18A VIF IN TP18A VIF IN TP18A VIF IN TP18A VIF IN
- -
BW VIN MIN VIN MAX GR V8 V8H V8L
- - - - - - -
1 1 1
TP8 TP8 TP8
VIF IN
-
SG6
-
VIF IN
SG7
V3H
1
TP3
VIF IN
SG6
(VCC=9V) (VCC=12V) (VCC=9V) (VCC=12V)
V
V3L
1
TP3
VIF IN
SG7
- - - - - - -
- -
- -
V dB MHz MHz MHz kHz mV/kHz
V3 CL-U CL-L CL-T VCO f
1 1 1 1 1 1
TP3
VIF IN
SG8
TP18A VIF IN SG9 TP18A VIF IN SG9 - - - TP18A - - TP2 VIF IN SG10
-- -- -- 0- - 3.3
2
MITSUBISHI ICs (TV)
M52760SP
PLL-SPLIT VIF/SIF IC
ELECTRICAL CHARACTERISTICS (cont.)
Symbol Parameter Test circuit Test point Input point Input SG Measurement condition switches set to position 1 unless V7 V8 V12 otherwise indicated
External power supply
Limits Min. 3.85 7.7 10.7 - - - 2.2 4.1 5.5 2.2 4.1 5.5 35 - - 0.85 - - Typ. 4.15 8.1 11.1 0.7 0.7 0.7 2.5 4.5 6.0 2.5 4.5 6.0 40 2 2 1.15 1.2 5 Max. - - - 1.2 1.2 1.2 2.8 4.9 6.5 2.8 4.9 6.5 - 5 5 1.45 - -
Unit
V2H
AFT maximum voltage
1
TP2
VIF IN SG10
-
- 3.3 (VCC=9V) (VCC=12V) - 3.3 (VCC=9V) (VCC=12V) -
1.65
V
V2L
AFT minimum voltage
1
TP2
VIF IN SG10
-
V
AFT def1
AFT Defeat 1
1
TP2
VIF IN SG10
-
(VCC=9V) (VCC=12V)
V
AFT def2 IM DG DP V13 SYNC RINV CINV SIF section QIF1 QIF2 Vos V1 VoAF1 VoAF2
AFT Defeat 2 Inter modulation Differential gain Differential phase Sync. tip level VIF input resister VIF input capacitance
1 1 1 1 1 2 2
TP2
VIF IN SG10
TP18A VIF IN SG11 TP18A VIF IN SG12 TP18A VIF IN SG12 TP18A VIF IN TP4 TP4 VIF IN QIF IN VIF IN QIF IN VIF IN SIF IN SIF IN SIF IN SG2 SG13 SG2 SG14 SG15 SG19 SG16 SG20 SG2
- 4.6 (VCC=9V) (VCC=12V) Vari - able - SW8=2 - - - - - - - - -
-
V dB % deg V k pF dB dB dB V mVrms mVrms % % dB dB dB dB dB dB k pF V
QIF output 1 QIF output 2
1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 1
TP13 TP13 TP13 TP10 TP10 TP10
- - 0 - - - - - - - - - - -
- - - - - - - - - - - - - -
- - 5 5 5 0 5 0 5 0 5 0 5 0 SW7=2
108 94 94 1.6 320 255 - - - - 55 55 55 55 - - SW7=2 -
114 100 100 2.2 560 450 0.2 0.2 42 42 62 64 62 64 1.5 4 0.7
120 106 106 2.8 800 645 0.9 0.9 55 55 - - - - - - 1.0
SIF detection output AF output DC voltage AF output (4.5MHz) AF output (5.5MHz) THD AF1 AF output distortion (4.5MHz) THD AF2 AF output distortion (5.5MHz) Limiting sensitivity LIM1 (4.5MHz) Limiting sensitivity LIM2 (5.5MHz) AMR1 AM rejection (4.5MHz) AMR2 AM rejection (5.5MHz) AF S/N 1 AF S/N (4.5MHz) AF S/N 2 AF S/N (5.5MHz) RINS SIF input resistance CINS SIF input capacitance Control section CQIF QIF control
TP10 SIF IN SG16 TP10 SIF IN SG20 TP10 SIF IN SG17 TP10 SIF IN SG21 TP10 TP10 TP10 TP10 TP7 TP7 TP7 SIF IN SIF IN SIF IN SIF IN SG18 SG22 SG19 SG23
-
-
Vari able
-
-
PIN12 VOLTAGE CONTROL
Pin12 voltage (V) 0 to 0.6 0 to 2.3 1.0 to 2.3 2.7 to 4.0 2.7 to 5.0 4.4 to 5.0 AF PAL NTSC AFT NORMAL DEFEAT NORMAL DEFEAT
3
MITSUBISHI ICs (TV)
M52760SP
PLL-SPLIT VIF/SIF IC ELECTRICAL CHARACTERISTICS TEST METHOD
Video S/N Input SG2 into VIF IN and measure the video out (Pin 18) noise in r.m.s at TP18B through a 5MHz (-3dB) L.P.F. 0.7xVo det NOISE
V3 RF AGC operating voltage Input SG8 into VIF IN, and gradually reduce Vi and then measure the input level when RF AGC output TP3 reaches 1/2 VCC, as shown below.
TP3 Voltage V3H
S/N=20 log
(dB)
BW Video band width 1. Measure the 1MHz component level of EQ output TP18A with a spectrum analyzer when SG3 (f2=57.75MHz) is input into VIF IN. At that time, measure the voltage at TP8 with SW8, set to position 2, and then fix V8 at that voltage. 2. Reduce F2 and measure the value of (f2-f0) when the (f2-f0) component level reaches -3dB from the 1MHz component level as shown below.
TP18 Vi V3L Vi (dB) 1/2VCC
CL-U Capture range 1. Increase the frequency of SG9 until the VCO is out of lockedoscillation. 2. Decrease the frequency of SG9 and measure the frequency fU when the VCO locks. CL-U=fU-58.75 (MHz) CL-L Capture range 1. Decrease the frequency of SG9 until the VCO is out of lockedoscillation.
1MHz BW ( f2 - f0 )
-3dB
2. Increase the frequency of SG9 and measure the frequency fL when the VCO locks. CL-L=58.75-fL (MHz)
VIN MIN Input sensitivity Input SG4 (Vi=90dB) into VIF IN, and then gradually reduce Vi and measure the input level when the 20kHz component of EQ output TP18A reaches -3dB from Vo det level. VIN MAX Maximum allowable input 1. Input SG5 (Vi=90dB) into VIF IN, and measure the level of the 20kHz component of EQ output. 2. Gradually increase the Vi of SG and measure the input level when the output reaches -3dB. GR AGC control range GR=VIN MAX-VIN MIN (dB)
CL-T Capture range CL-T=CL-U+CL-L (MHz) VCO f VCO SW on drift 1. Input SG2 into VIF IN . 2. Adjust the VCO coil so that AFT voltage can be reached to 1/2 Vcc in 10 seconds after the power switch is turned to on. 3. IF AGC FILTER (Pin8) is connected to GND (0V) after turning off the VIF input. 4. And then, measure each free running frequencies of 10 and 60 seconds later. VCO f (kHz) = frequency2 (60 sec. later) -frequency1 (10 sec. later)
4
MITSUBISHI ICs (TV)
M52760SP
PLL-SPLIT VIF/SIF IC
AFT sensitivity, V2H Maximum AFT voltage, V2L Minimum AFT voltage 1. Input SG10 into VIF IN , and set the frequency of SG10 so that the voltage of AFT output TP2 is 3V. This frequency is f (3). 2. Set the frequency of SG10 so that the AFT output voltage is 2V. This frequency is f (2) 3. IN the graph, maximum and minimum DC voltage are V2H and V2L, respectively.
TP2 Voltage
AMR AM Rejection 1. Input SG18 into SIF input, and measure the output level of AF output TP10. This level is VAM. 2. AMR is; AMR=20log VoAF (mVr.m.s) VAM (mVr.m.s) (dB)
AF S/N 1. Input SG19 into SIF input, and measure the output noise level of AF output TP1. This level is VN. 2. S/N is;
3V
S/N=20log
V2H
VoAF (mVr.m.s) VN (mVr.m.s)
(dB)
2V
CQIF QIF control Lower the voltage of V7, and measure the voltage of V7 when the DC voltage of TP13 begins to change.
V2L f (3) f (2) f (MHz)
THE NOTE IN THE SYSTEM SETUP
M52760SP has 2 power supply pins of Vcc (pin 14) and Vreg.OUT (pin 17) . Pin 14 is for AFT output, RF AGC output circuits and 5V regulated power supply circuit and Pin 17 is for the other circuit blocks. In case M52760SP is used together with other ICs like VIF operating at more than 5V, the same supply voltage as that of connected ICs is applied to VCC and Vreg.Out is opened. The other circuit blocks, connected to Vreg.OUT are powered by internal 5V regulated power supply. In case the connecting ICs are operated at 5V, 5V is supplied to both VCC and Vreg.OUT.
=
1000 (mV) (mV/kHz) f (2) - f (3) (kHz)
IM Intermodulation 1. Input SG11 into VIF IN, and measure EQ output TP18A with an oscilloscope. 2. Adjust AGC filter voltage V8 so that the minimum DC level of the output waveform is 1.0V. 3. At this time, measure, TP18A with a spectrum analyzer. The intermodulation is defined as a difference between 1.07MHz and 4.43MHz frequency components. LIM Limiting sensitivity 1. Input SG17 (SG21) into SIF input, and measure the 400Hz component level of AF output TP10. 2. Input SG19 (SG23) into SIF input, and measure the 400Hz component level of AF output TP10. 3. The input limiting sensitivity is defined as the input level when a difference between each 400Hz components of audio output (TP10) is 30dB, as shown below.
Audio output (mVrms) 30dB Audio output while SG19 (SG23) is input
LOGIC TABLE
AF 10k "H" 10k "L" 20k "H" 20k "L" 20k "H" 20k "L" NTSC PAL AFT DEFEAT NORMAL DEFEAT NORMAL
Audio output while SG17 (SG21) is input
(dB)
SIF input
5
MITSUBISHI ICs (TV)
M52760SP
PLL-SPLIT VIF/SIF IC INPUT SIGNAL
SG No. 1 2 3 4 5 6 7 8 9 10 11 Signals (50 termination) f0=58.75MHz AM20kHz 77.8% 90dB f0=58.75MHz 90dB CW f1=58.75MHz 90dB CW (Mixed signal) f2=Frequency variable 70dB CW (Mixed signal) f0=58.75MHz AM20kHz 77.8% level variable f0=58.75MHz AM20kHz 14.0% level variable f0=58.75MHz 80dB CW f0=58.75MHz 110dB CW f0=58.75MHz CW level variable f0=Variable AM20kHz 77.8% 90dB f0=Variable 90dB CW f1=58.75MHz 90dB CW (Mixed signal) f2=55.17MHz 80dB CW (Mixed signal) f3=54.25MHz 80dB CW (Mixed signal) f0=58.75MHz 87.5% TV modulation ten-step waveform sync tip level 90dB f1=54.25MHz 95dB CW f1=54.25MHz 75dB CW f1=58.75MHz 90dB CW (Mixed signal) f2=54.25MHz 70dB CW (Mixed signal) f0=4.5MHz 90dB FM400Hz25kHz dev f0=4.5MHz FM400Hz25kHz dev level variable f0=4.5MHz 90dB AM400Hz 30% f0=4.5MHz 90dB CW f0=5.5MHz 90dB FM400Hz50kHz dev f0=5.5MHz FM400Hz50kHz dev level variable f0=5.5MHz 90dB AM400Hz 30% f0=5.5MHz 90dB CW
TYPICAL CHARACTERISTICS
THERMAL DERATING (MAXIMUM RATING)
1750
POWER DISSIPATION Pd (mW)
1524 1500 1250 1000 750 500 250 0 -20 914
0
25
50
75
100
125
150
12 13 14 15 16 17 18 19 20 21 22 23
AMBIENT TEMPERATURE Ta (C)
6
MITSUBISHI ICs (TV)
M52760SP
PLL-SPLIT VIF/SIF IC APPLICATION EXAMPLE 1
SW14 TP18B L TP18A P F SW18 1 62 0.47 82p 20 19 18 390k 17 16 15 14 Vcc REG VCO AFT QIF DET EQ AMP VIDEO DET Inter Split LIM AMP 13 12 2 made by Toko 5549 33 TP13 V12 TP12 0.01 1 1 A VCC
SW17
2
2 SIF IN
51
11
APC QIF AMP FM DET
RF AGC IF AGC VIF AMP AF AMP
1 30k 20k TP1
2
3 TP3 39k
4 1:1
5
6
7 TP7
8 TP8
9 2.4k 10 SW8 1
10 7.5k TP10 0.01
SW7 0.47 0.01 1 2 V7 2 V8 51 VIF IN
VCC 150k TP2 150k
51
Capacitors without an assignment are 0.01F. The Measuring Circuit 1 is Mitsubishi standard evaluation fixture.
Units Resistance : Capacitance : F
7

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