Mitsubishi M52342SP Datasheet

MITSUBISHI ICs (TV)

M52342SP

PLL-SPLIT VIF/SIF IC

DESCRIPTION

The M52342SP 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, QIF AGC and EQ AMP.

FEATURES

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 and built-in QIF AGC 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.

. It has built-in EQ AMP.

P-P

APPLICATION

TV sets, VCR tuners

PIN CONFIGURATION (TOP VIEW)

RF AGC DELAY EQ F/B

AFT OUT

RF AGC OUT

QIF DET IN

IF AGC FILTER

AUDIO OUT

VIF IN
VIF IN

GND

NFB

1
2
3
4

Outline 20P2N-A

20
19
18

M52342SP

17
165

156
147
138
129
1110

APC FILTER
VIDEO OUT
Vreg. OUT
VCO COIL
VCO COIL
Vcc
QIF OUT
AFT SW/NPSW
LIMITER IN

RECOMMENDED OPERATING CONDITION

In case of V

Supply voltage range....................................................4.75 to 5.25V

Recommended supply voltage...................................................5.0V

Incase of Vreg. out open

Supply voltage range......................................................8.5 to 12.5V

CC

and Vreg. out short

BLOCK DIAGRAM

18

EQ
AMP

Vreg. OUT LIMITER INAPC FILTER

17 16

VCO COIL Vcc

VIDEO
DET

VIF AMP

EQ F/B AFT SW/NPSW

20

VIDEO OUT

19

AFT

VCO COIL

VCO

APC

RF AGC

QIF OUT

15

14 12

Vcc REG

13

SplitInter

QIF DET

QIF AGC

QIF AMP

IF AGC

11

LIM AMP

FM DET

AF AMP

1

RF AGC DELAY

1

2

AFT OUT AUDIO OUTIF AGC FILTER

3

RF AGC OUT

45

6 8

QIF DET IN

GNDVIF IN

97

NFBVIF IN

10

°

°

±

−

−

−

−

−

−

−

−

−

− dB µ

−

−

−

−

−

µ

MITSUBISHI ICs (TV)

M52342SP

PLL-SPLIT VIF/SIF IC

ABSOLUTE MAXIMUM RATINGS

(Ta=25 ° C, surge protection capacitance 200pF resistance 0 Ω , unless otherwise noted)

Symbol Parameter Condition Ratings Unit

V

and Vreg. out is not connected to each

V

CC

Vreg
OUT

d

P
T

opr

T

stg

Supply voltage1

.

Supply voltage Vreg. OUT
Power dissipation 1524 mW

Operating temperature -20 to +75
Storage temperature -40 to +150

Surge Surge voltage resistance

AMBIENT OPERATING CONDITION

Supply voltage Supply voltage range

In case of V
Vreg. out short

In case of Vreg. out
open

CC

and

4.75 to 5.25V 5.0V

8.5 to 12.5V

ELECTRICAL CHARACTERISTICS

(Ta=25 ° C, unless otherwise noted)

(V

CC

CC

other.

CC

V

and Vreg. out is not connected to each

other.

Recommended supply

voltage

=5V , Ta=25 ° C, unless otherwise noted)

13.2 V

6.0 V

200 V

Measurement condition

Symbol Parameter

Test

circuit

Test

point

Input

point

Input

SG

External

power supply

V12

switches set to

position 1 unless

otherwise indicatedV7 V8

Limits

Min. Typ. Max.

VIF section

CC1

I

CC2

I

CC2

V
V18 Video output DC voltage 1 TP18A −−−

o det

V

Video S/N

BW Video band width 1 TP18A VIF IN SG3 −

Circuit current1
V

=5V

CC

Circuit current2
V

=12V

CC

1 A VIF IN SG1 −− 5

1 A VIF IN SG1 −− 5

Vreg voltage 1 TP17 −−−−

0
Video output voltage 1 TP18A VIF IN SG1 −−−
Video S/N 1 TP18B VIF IN SG2 −−− SW18=2 51 56

Vari
able

=5V

CC

V
SW17=1, SW14=2

V

=12V

CC

SW14=SW17=2
V

=12V

CC

5

SW7=2

−

SW8=2 3.2 3.5 3.8 V

33 46 59 mA

33 46 59 mA

4.60 4.95 5.30 V

1.8 2.1 2.4 V

SW8=2

7.0 9.0

VIN MIN Input sensitivity 1 TP18A VIF IN SG4 −−− − 48 52 dB µ
VIN MAX
GR AGC control range input

V8 IF AGC voltage 1 TP8 VIF IN SG6 −−−
V8H

V8L

V3H

V3L

V3
CL-U Capture range U 1 TP18A VIF IN SG9 −−−

CL-L Capture range L 1 TP18A VIF IN SG9 −−−
CL-T Capture range T 1

Maximum allowable
input

Maximum IF AGC
voltage

Minimum IF AGC
voltage

Maximum RF AGC
voltage

Minimum RF AGC
voltage

RF AGC operation
voltage

1 TP18A VIF IN SG5 −−−

−−−−

1 TP8

−−

−−−

−−−

1 TP8 VIF IN SG7 −−−

1 TP3 VIF IN SG6 −−−

1 TP3 VIF IN SG7 −−−

1 TP3 VIF IN SG8 −−−

−

− − −−−

101 105
50 57

2.9 3.2 3.5 V

4.0 4.4

2.2 2.4 2.6 V

4.2 4.7

=9V) 8.0 8.9

CC

(V

=12V) 11.0 11.9

CC

− 0.1 0.5

=9V)

CC

(V

=12V)

CC

89 92 95 dB µ

1.0 1.7

1.8 2.4

3.1 4.1

0.2 0.7

0.2 0.7

AFT sensitivity 1 TP2 VIF IN SG10 −− 3.3 20 30 60 mV/kHz

C
C

Unit

P-P

dB

MHz

dB

V

V(V

V(V

MHz
MHz
MHz

2

−

−

−

−

−

−

MITSUBISHI ICs (TV)

M52342SP

PLL-SPLIT VIF/SIF IC

−

−

−

− k Ω

−

−

ELECTRICAL CHARACTERISTICS

(cont.)

Measurement condition

Symbol Parameter

Test

circuit

Test

point

Input

point

Input

SG

External

power supply

V12

switches set to

position 1 unless

otherwise indicatedV7 V8

Limits

Min. Typ. Max.

Unit

3.85 4.15

V2H AFT maximum voltage 1 TP2 VIF IN SG10 −− 3.3

=9V) 7.7 8.1

CC

(V

=12V) 10.7 11.1

CC

V(V

0.7 1.2

V2L AFT minimum voltage 1 TP2 VIF IN SG10 −− 3.3

=9V)

CC
CC

(V

=12V)

0.7 1.2

0.7 1.2

V(V

2.2 2.5 2.8

1.65

AFT def1 AFT defeat 1 1 TP2 VIF IN SG10 −−

CC

=9V) 4.1 4.5 4.9

CC

(V

=12V) 5.5 6.0 6.5

V(V

2.2 2.5 2.8

AFT def2 AFT defeat 2 1 TP2 VIF IN SG10 −− 4.6

Vari

IM Inter modulation 1 TP18A VIF IN SG11

−

able

CC

=9V) 4.1 4.5 4.9

CC

(V

=12V) 5.5 6.0 6.5

SW8=2

35 40

V(V

dB
DG Differential gain 1 TP18A VIF IN SG12 −−− − 2 5 %
DP Differential phase 1 TP18A VIF IN SG12 −−− − 2 5 deg
V18

SYNC
RINV VIF input resister 2 TP4
CINV VIF input capacitance 2 TP4

Sync. tip level 1 TP18A VIF IN SG2 −−−

0.85 1.15 1.45 V

1.2
5

pF

SIF section
QIF1 QIF output 1 1 TP13

QIF2 QIF output 2 1 TP13

VIF IN
QIF IN

VIF IN
QIF IN

SG2

SG13

SG2

SG14

−−−

−−−

94 100 106 dB µ

94 100 106 dB µ

Vos SIF detection output 1 TP13 VIF IN SG15 0 − 5 SW7=2 94 100 106 dB µ
V1 AF output DC voltage 1 TP10 SIF IN SG20 −− 5 1.6 2.2 2.8 V
VoAF1 AF output (4.5MHz) 1 TP10 SIF IN SG16 −−5 320 560 800 mVrms
VoAF2 AF output (5.5MHz) 1 TP10 SIF IN SG21 −−0 255 450 645 mVrms

THD AF1

THD AF2

LIM1

LIM2

AF output distortion
(4.5MHz)

AF output distortion
(5.5MHz)

Limiting sensitivity
(4.5MHz)

Limiting sensitivity
(5.5MHz)

1 TP10 SIF IN SG16 −−5 − 0.2 0.9 %

1 TP10 SIF IN SG21 −−0 − 0.2 0.9 %

1 TP10 SIF IN

1 TP10 SIF IN

SG17

−−5 − 42 55 dBµ

SG19
SG22

−−0 − 42 55 dBµ

SG24
AMR1 AM rejection (4.5MHz) 1 TP10 SIF IN SG18 −−5 55 62 − dB
AMR2 AM rejection (5.5MHz) 1 TP10 SIF IN SG23 −−0 55 64 − dB
AF S/N 1 AF S/N (4.5MHz) 1 TP10 SIF IN SG20 −−5 55 62 − dB
AF S/N 2 AF S/N (5.5MHz) 1 TP10 SIF IN SG25 −−0 55 64 − dB
RINS SIF input resistance 2 TP7 − 1.5 − kΩ
CINS SIF input capacitance 2 TP7 − 4 − pF
Control section

QIF QIF control 1 TP7 −−

C

Vari
able

−−

SW7=2

− 0.7 1.0 V

PIN12 VOL TAGE CONTROL

Pin12 voltage (V) AF AFT

0 to 2.3

2.7 to 5.0

3

0 to 0.6

1.0 to 2.3 DEFEAT

2.7 to 4.0

4.4 to 5.0 DEFEAT

PAL

NTSC

NORMAL

NORMAL

MITSUBISHI ICs (TV)

M52342SP

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.

S/N=20 log

0.7×Vo det
NOISE

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

-3dB

(dB)

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 V

CC, as

shown below.

TP3
Voltage

3H

V

1/2VCC

V

3L

Vi

Vi (dBµ)

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)

1MHz

BW

( f2 - f0 )

VIN MIN Input sensitivity

Input SG4 (Vi=90dBµ) 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=90dBµ) 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-L Capture range

1. Decrease the frequency of SG9 until the VCO is out of locked­oscillation.

2. Increase the frequency of SG9 and measure the frequency fL
when the VCO locks.

CL-L=58.75-fL (MHz)

CL-T Capture range

CL-T=CL-U+CL-L (MHz)

µ AFT sensitivity, V

2H 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 named
f(3).

2. Set the frequency of SG10 so that the AFT output voltage is 2V.
This frequency is named f (2)

4

MITSUBISHI ICs (TV)

M52342SP

PLL-SPLIT VIF/SIF IC

3. IN the graph, maximum and minimum DC voltage are V2H and
V2L, respectively.

TP2
Voltage

3V

V2H

2V

V2L

f (3) f (2) f (MHz)

1000 (mV)

µ =

f (2) - f (3) (kHz)

(mV/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 920kHz
and 3.58MHz frequency components.

LIM Limiting sensitivity

1. Input SG17 (SG22) into SIF input, and measure the 400Hz
component level of AF output TP10.

2. Input SG19 (SG24) 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.

AF S/N

1. Input SG20 (SG25) into SIF input, and measure the output noise
level of AF output TP1. This level is named VN.

2. S/N is;

C

QIF QIF control

S/N=20log

VoAF (mVr.m.s)

VN (mVr.m.s)

(dB)

Lower the voltage of V7, and measure the voltage of V7 when DC
voltage of TP13 begins to change.

THE NOTE IN THE SYSTEM SETUP

M52342SP 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 circuit and Pin 17 is for the other circuit blocks.
In case M52342SP 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.

LOGIC T ABLE

AF AFT

10k “H”

10k “L”

20k “H”
20k “L” NORMAL
20k “H”
20k “L” NORMAL

NTSC

PAL

DEFEAT

DEFEAT

Audio output

(mVrms)

30dB

Audio output while
SG17 (SG22) is input

Audio output while
SG19 (SG24) is input

SIF input

(dBµ)

AMR AM Rejection

1. Input SG18 (SG23) into SIF input, and measure the output level
of AF output TP10. This level is named VAM.

2. AMR is;

AMR=20log

VoAF (mVr.m.s)

VAM (mVr.m.s)

(dB)

5