M52760 Mitsubishi, M52760 Datasheet

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M52760

Manufacturer Part Number
M52760
Description
PLL-SPLIT VIF/SIF IC
Manufacturer
Mitsubishi
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
M52760
Manufacturer:
MITSUBIS
Quantity:
20 000
Part Number:
M52760P
Manufacturer:
FUJ
Quantity:
14
Part Number:
M52760SP
Manufacturer:
MITSUBISHI/三菱
Quantity:
20 000
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.
FEATURES
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
1
BLOCK DIAGRAM
Video detection output is 2V
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.
RF AGC DELAY
EQ F/B
20
1
P-P
APC FILTER
AFT OUT
. It has built-in EQ AMP.
AFT
19
2
RF AGC OUT
VIDEO OUT
EQ
AMP
18
3
Vreg. OUT
VIF IN
17
4
VIF AMP
VIDEO
DET
VCO COIL
VIF IN
16
5
VCO
VCO COIL
APC
RF AGC
GND
15
6
PIN CONFIGURATION (TOP VIEW)
QIF DET IN
Vcc REG
RF AGC DELAY
IF AGC FILTER
Vcc
14
7
RF AGC OUT
AUDIO OUT
QIF DET IN
IF AGC FILTER
Inter
AFT OUT
QIF OUT
QIF AMP
IF AGC
VIF IN
VIF IN
QIF DET
GND
NFB
13
8
Split
AFT SW/NPSW
10
1
2
3
4
5
6
7
8
9
Outline 20P4B
NFB
12
9
PLL-SPLIT VIF/SIF IC
MITSUBISHI ICs (TV)
AUDIO OUT
LIMITER IN
LIM AMP
FM DET
AF AMP
11
10
M52760SP
20
19
18
17
16
15
14
13
12
11
EQ F/B
APC FILTER
VIDEO OUT
Vreg. OUT
VCO COIL
VCO COIL
Vcc
QIF OUT
AFT SW/NPSW
LIMITER IN

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M52760 Summary of contents

Page 1

... 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. FEATURES • Video detection output has built-in EQ AMP. P-P • The package is a 20-pin shrink-DIP, suitable for space saving. ...

Page 2

... TP3 VIF IN SG7 1 TP3 VIF IN SG8 1 TP18A VIF IN SG9 1 TP18A VIF IN SG9 1 1 TP18A 0 1 TP2 VIF IN SG10 3.3 MITSUBISHI ICs (TV) M52760SP PLL-SPLIT VIF/SIF IC Unit Limits switches set to position 1 unless otherwise indicated Min. Typ SW17=1, SW14=2 V =12 ...

Page 3

... TP10 SIF IN SG22 0 1 TP10 SIF IN SG19 5 1 TP10 SIF IN SG23 0 2 TP7 2 TP7 1 TP7 Vari able AFT NORMAL DEFEAT NORMAL DEFEAT MITSUBISHI ICs (TV) M52760SP PLL-SPLIT VIF/SIF IC Limits switches set to position 1 unless otherwise indicated Min. Typ. Max. 3.85 4.15 (V =9V) 7.7 8 =12V) 10.7 11.1 CC 0.7 (V =9V) ...

Page 4

... 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 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. MITSUBISHI ICs (TV) M52760SP PLL-SPLIT VIF/SIF IC TP3 Voltage V 3H 1/2V ...

Page 5

... DC voltage of TP13 begins to change. THE NOTE IN THE SYSTEM SETUP V 2L M52760SP has 2 power supply pins of Vcc (pin 14) and Vreg.OUT f (MHz) (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. ...

Page 6

... FM400Hz 50kHz dev =5.5MHz FM400Hz 50kHz dev level variable =5.5MHz 90dB AM400Hz 30 =5.5MHz 90dB CW 0 MITSUBISHI ICs (TV) M52760SP PLL-SPLIT VIF/SIF IC TYPICAL CHARACTERISTICS THERMAL DERATING (MAXIMUM RATING) 1750 1524 1500 1250 914 1000 750 500 250 0 -20 ...

Page 7

... VCO EQ VIDEO AMP DET APC RF AGC VIF AMP TP3 1:1 39k 0. VIF IN MITSUBISHI ICs (TV) M52760SP PLL-SPLIT VIF/SIF IC 1 SW14 SIF IN V12 TP13 TP12 0. Vcc REG LIM AMP Inter Split QIF DET FM DET QIF AMP ...

Page 8

... All capacitor is 0.01 F, unless otherwise specified Vcc REG VCO VIDEO DET APC RF AGC VIF AMP TP4 HI RX meter LO MITSUBISHI ICs (TV) M52760SP PLL-SPLIT VIF/SIF LIM AMP Inter Split QIF DET FM DET QIF AMP IF AGC AF AMP TP7 HI RX meter LO 8 ...

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