MITSUBISHI M52334FP

MITSUBISHI ICs (TV)
M52334FP
PLL-SPLIT VIF/SIF IC
DESCRIPTION
The M52334FP is IF signal-processing IC for VCRs and TVs. It
PIN CONFIGURATION (TOP VIEW)
enable the PLL detection system despite size as small as that of
conventional quasi-synchronous VIF/SIF detector, IF/RF AGC, SIF
1
20 EQ F/B
2
19 AFT OUT
EQ IN
3
18 RF AGC DELAY
Vreg. OUT
4
17 VIF IN
VCO COIL
5
VCO COIL
6
VCC
7
VIDEO OUT
8
13 IF AGC FILTER
SIF GND
9
12 NFB
FEATURES
•
•
•
•
•
•
•
•
Video detection output is 2VP-P. It has built-in EQ AMP.
The package is a 20-pin flat package, 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.
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.
This IC corresponds to only inter of NTSC system.
M52334FP
EQ OUT
APC FILTER
limiter and FM detector.
LIMITER IN 10
16 VIF IN
15 GND
14 RF AGC OUT
11 AUDIO OUT
Outline 20P2N-A
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
Incase of Vreg. out open
Supply voltage range......................................................8.5 to 12.5V
BLOCK DIAGRAM
EQ F/B
20
RF AGC DELAY
AFT OUT
VIF IN
19
18
17
VIF IN
GND
16
15
IF AGC FILTER
RF AGC OUT
NFB
14
13
12
AUDIO OUT
11
VIF AMP
RF AGC
EQ
AMP
AF AMP
IF AGC
APC
VIDEO
DET
FM DET
AFT
VCO
LIM AMP
Vcc REG
1
2
EQ OUT
APC FILTER
1
3
EQ IN
4
5
6
VCO COIL
Vreg. OUT
VCO COIL
7
VCC
8
9
10
SIF GND
VIDEO OUT
LIMITER IN
MITSUBISHI ICs (TV)
M52334FP
PLL-SPLIT VIF/SIF IC
ABSOLUTE MAXIMUM RATINGS (Ta=25°C, unless otherwise noted)
Symbol
Parameter
VCC
Supply voltage1
Condition
VCC and Vreg. out is not connected to each
other.
Vreg.
OUT
Supply voltage Vreg. OUT
VCC and Vreg. out is not connected to each
other.
Pd
Topr
Tstg
Power dissipation
Operating temperature
Storage temperature
Surge
Surge voltage resistance
Surge protection capacitance 200pF resistance 0Ω
Ratings
Unit
13.2
V
6.0
V
1225
-20 to +85
-40 to +150
mW
°C
°C
±200
V
ELECTRICAL CHARACTERISTICS (VCC=9V, Ta=25°C, unless otherwise noted)
Symbol
Parameter
Test
circuit
Test
point
Input
point
Input
SG
Measurement condition
switches set to position 1
unless otherwise indicated
Limits
Unit
Min.
Typ.
Max.
33
40.5
47
mA
31
40.5
49
mA
4.7
5.00
5.3
V
3.45
3.9
4.35
V
0.85
1.85
51
1.1
2.2
56
1.35
2.55
−
V P-P
V P-P
dB
5.0
7.0
−
MHz
52
dBµ
VIF section
ICC1
Circuit current1
VCC=5V
1
A
−
−
VCC=5V
SW4=2, SW7=2
ICC2
Circuit current2
VCC=12V
1
A
−
−
VCC2
Vreg voltage2
1
TP4
−
−
VCC=12V
SW7=2
VCC=12V
V1
Video output DC
voltage1
1
TP1A
−
SW13=2
V13=0V
Vo det8
Vo det
Video S/N
Video output voltage8
Video output voltage1
Video S/N
1
1
1
TP8 VIF IN
TP1A VIF IN
TP1B VIF IN
SG1
SG1
SG2
BW
Video band width
1
TP1A VIF IN
SG3
VIN MIN
Input sensitivity
Maximum allowable
input
AGC control range input
IF AGC voltage
1
TP1A VIF IN
SG4
−
48
1
TP1A VIF IN
SG5
101
105
−
dBµ
−
50
2.85
57
3.15
−
3.45
dB
V
−
4.0
4.4
−
V
2.2
2.4
2.6
V
VIN MAX
GR
V13
V13H
V13L
Maximum IF AGC
voltage
Minimum IF AGC
voltage
−
−
−
−
1
TP13 VIF IN
1
TP13
1
TP13 VIF IN
SG7
−
SW1=2
SW13=2
V13=variable
SG6
V14H
Maximum RF AGC
voltage
1
TP14 VIF IN
SG2
SW13=2
V13=4V
8.0
8.7
−
V
V14L
Minimum RF AGC
voltage
1
TP14 VIF IN
SG2
SW13=2
V13=1V
−
0.1
0.5
V
86
0.8
1.4
2.5
20
7.7
−
4.2
89
1.3
2.0
3.3
30
8.2
0.7
4.5
92
−
−
−
70
−
1.2
4.8
dBµ
MHz
MHz
MHz
mV/kHz
V
V
V
35
42
−
dB
V14
CL-U
CL-L
CL-T
µ
V19H
V19L
AFT def1
Capture range U
Capture range L
Capture range T
AFT sensitivity
AFT maximum voltage
AFT minimum voltage
AFT defeat 1
1
1
1
1
1
1
1
1
TP14 VIF IN SG8
TP1A VIF IN SG9
TP1A VIF IN SG9
−
−
−
TP19 VIF IN SG10
TP19 VIF IN SG10
TP19 VIF IN SG10
TP19 VIF IN
−
IM
Inter modulation
1
TP3A VIF IN SG11
DG
DP
V3
SYNC
RINV
CINV
Differential gain
Differential phase
1
1
TP3A VIF IN SG12
TP3A VIF IN SG12
−
−
Sync. tip level
1
TP3A VIF IN
VIF input resister
VIF input capacitance
2
2
TP17
TP17
RF AGC operation voltage
SG2
SW13=2
V13=variable
2
2
5
5
%
deg
1.0
1.4
1.8
V
−
−
1.2
5
−
−
kΩ
pF
2
MITSUBISHI ICs (TV)
M52334FP
PLL-SPLIT VIF/SIF IC
ELECTRICAL CHARACTERISTICS (cont.)
Symbol
SIF section
V1
VoAF
THD AF
LIM
AMR
AF S/N
Parameter
AF output DC voltage
AF output
AF output distortion
Limiting sensitivity
AM rejection
AF S/N
Test
circuit
Test
point
Input
point
1
1
1
1
1
1
TP11
TP11
TP11
TP11
TP11
TP11
−
SIF IN
SIF IN
SIF IN
SIF IN
SIF IN
Measurement condition
Input
switches
set to position 1 unless
SG
otherwise indicated
Limits
Min.
Typ.
Max.
−
SG16
SG16
SG17
SG18
SG19
3.5
565
−
−
55
55
4.4
790
0.4
42
65
65
5.3
1125
0.9
55
−
−
Unit
V
mVrms
%
dBµ
dB
dB
ELECTRICAL CHARACTERISTICS TEST METHOD
Video S/N
Input SG2 into VIF IN and measure the video out (Pin 3) noise in
GR AGC control range
GR=VIN MAX-VIN MIN (dB)
r.m.s at TP3-B through a 5MHz (-3dB) L.P.F.
S/N=20 log
0.7×Vo det
NOISE
V18 RF AGC operating voltage
Input SG8 into VIF IN, and gradually reduce Vi and then measure
(dB)
the input level when RF AGC output TP14 reaches 1/2 V CC, as
shown below.
BW Video band width
1. Measure the 1MHz component level of EQ output TP3A with a
TP18
Voltage
spectrum analyzer when SG3 (f2=44.75MHz) is input into VIF
V18H
IN. At that time, measure the voltage at TP13 with SW13, set to
position 2, and then fix V13 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
1/2VCC
as shown below.
TP18
V18L
Vi
Vi (dBµ)
CL-U Capture range
1. Increase the frequency of SG9 until the VCO is out of locked-
-3dB
oscillation.
2. Decrease the frequency of SG9 and measure the frequency fU
when the VCO locks.
CL-U=fU-45.75 (MHz)
1MHz
BW
( f2 - f0 )
CL-L Capture range
1. Decrease the frequency of SG9 until the VCO is out of lockedVIN 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
TP3A 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.
3
oscillation.
2. Increase the frequency of SG9 and measure the frequency fL
when the VCO locks.
CL-L=45.75-fL (MHz)
CL-T Capture range
CL-T=CL-U+CL-L (MHz)
MITSUBISHI ICs (TV)
M52334FP
PLL-SPLIT VIF/SIF IC
µ AFT sensitivity, V19H AFT maximum voltage,
V19L AFT minimum voltage
1. Input SG10 into VIF IN, and set the frequency of SG10 so that
the voltage of AFT output TP19 is 5V. This frequency is named
AF S/N
1. Input SG19 into SIF input, and measure the output noise level of
AF output TP11. This level is named VN.
2. S/N is;
f(3).
S/N=20log
2. Set the frequency of SG10 so that the AFT output voltage is 4V.
VoAF (mVr.m.s)
VN (mVr.m.s)
(dB)
This frequency is named f (2)
3. IN the graph, maximum and minimum DC voltage are V 19H and
THE NOTE IN THE SYSTEM SETUP
V19L, respectively.
M52334FP has 2 power supply pins of Vcc (pin 7) and Vreg. OUT
TP19
Voltage
(pin 4). Pin 7 is for AFT output, RF AGC output circuits and 5V
regulated power supply circuit and Pin 4 is for the other circuit
blocks. In case M52334FP is used together with other ICs like VIF
5V
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
V19H
circuit blocks, connected to Vreg. OUT are powered by internal 5V
4V
regulated power supply.
In case the connecting ICs are operated at 5V, 5V is supplied to
both VCC and Vreg.OUT.
V19L
f (3)
µ=
f (2)
f (MHz)
SG No.
1
2
1000 (mV)
f (2) - f (3) (kHz)
INPUT SIGNAL
(mV/kHz)
IM Intermodulation
1. Input SG11 into VIF IN, and measure EQ output TP3A with an
oscilloscope.
2. Adjust AGC filter voltage V13 so that the minimum DC level of
the output waveform is 1.0V.
3. At this time, measure, TP3A with a spectrum analyzer.
The intermodulation is defined as a difference between 0.92MHz
and 3.58MHz frequency components.
LIM Limiting sensitivity
1. Input SG17 (Vi=90dBµ) into SIF input, and measure the 400Hz
component level of AF output TP11.
3
4
5
6
7
8
9
10
11
12
2. Lower the input level of SG17, and measure the level of SG17
13
14
when the VoAF level reaches -3dB.
AMR AM Rejection
1. Input SG18 into SIF input, and measure the output level of AF
output TP11. This level is named VAM.
2. AMR is;
AMR=20log
VoAF (mVr.m.s)
VAM (mVr.m.s)
(dB)
15
16
17
18
19
Signals (50Ω termination)
f0=45.75MHz AM20kHz 77.8% 90dBµ
f0=45.75MHz 90dBµ CW
f1=45.75MHz 90dBµ CW (Mixed signal)
f2=Frequency variable 70dBµ CW (Mixed signal)
f0=45.75MHz AM20kHz 77.8% level variable
f0=45.75MHz AM20kHz 14.0% level variable
f0=45.75MHz 80dBµ CW
f0=45.75MHz 110dBµ CW
f0=45.75MHz CW level variable
f0=Variable AM20kHz 77.8% 90dBµ
f0=Variable 90dBµ CW
f1=45.75MHz 90dBµ CW (Mixed signal)
f2=42.17MHz 80dBµ CW (Mixed signal)
f3=41.25MHz 80dBµ CW (Mixed signal)
f0=45.75MHz 87.5%
TV modulation ten-step waveform
Sync tip level 90dBµ
f1=41.25MHz 103dBµ CW
f1=41.25MHz 70dBµ CW
f1=45.75MHz 90dBµ CW (Mixed signal)
f2=41.25MHz 70dBµ CW (Mixed signal)
f0=4.5MHz 90dBµ FM400Hz±25kHz dev
f0=4.5MHz FM400Hz±25kHz dev level variable
f0=4.5MHz 90dBµ AM400Hz 30%
f0=4.5MHz 90dBµ CW
4
MITSUBISHI ICs (TV)
M52334FP
PLL-SPLIT VIF/SIF IC
TEST CIRCUIT
VCC
IF IN
AFT
OUT
RF AGC
OUT
RF AGC
Vreg. Delay
OUT
19
20
17
18
16
15
AF OUT
13
14
12
11
VIF AMP
RF AGC
EQ
AMP
AF AMP
IF AGC
APC
VIDEO
DET
FM DET
AFT
VCO
LIM AMP
Vcc REG
2
1
4
3
5
6
7
2.2VP-P
EQ OUT
VCC
VIDEO OUT
TYPICAL CHARACTERISTICS
THERMAL DERATING (MAXIMUM RATING)
POWER DISSIPATION Pd (mW)
1750
1500
1250
1225
1000
750
637
500
250
0
-20
0
25
50
75
100
125
AMBIENT TEMPERATURE Ta (°C)
5
150
8
9
10
MITSUBISHI ICs (TV)
M52334FP
PLL-SPLIT VIF/SIF IC
APPLICATION EXAMPLE 1
VIF IN
150k
TP19
51
150k
V13
2
1
SW13
TP11
27k
TP14
TP20
33k
TP18
19
20
18
17
0.1µ
0.22µ
1:1
TP13
15
16
13
14
7.5k
12
11
VIF AMP
RF AGC
EQ
AMP
AF AMP
IF AGC
APC
VIDEO
DET
FM DET
AFT
VCO
LIM AMP
Vcc REG
2
1
3
4
6
5
8
7
9
10
0.1µ
SW3
1
1k
2
62
1M
33µ
51
VCO COIL
5540
SIF IN
TP1A
L
P
F
1
TP1B
SW4 2
∗ All capacitor is 0.01µF, unless otherwise specified.
∗ The Measuring Circuit 1 is Mitsubishi standard evaluation fixture.
TP8
2
A
VCC
SW7 1
Units Resistance : Ω
Capacitance : F
6
MITSUBISHI ICs (TV)
M52334FP
PLL-SPLIT VIF/SIF IC
APPLICATION EXAMPLE 2
LO RX
meter
HI
TP17
20
19
18
17
16
15
14
13
12
11
VIF AMP
RF AGC
EQ
AMP
AF AMP
IF AGC
APC
VIDEO
DET
FM DET
AFT
VCO
LIM AMP
Vcc REG
1
2
3
4
5
6
7
8
9
10
33µF
∗ All capacitor is 0.01µF, unless otherwise specified.
7
MITSUBISHI ICs (TV)
M52334FP
PLL-SPLIT VIF/SIF IC
Pin 1 (RF AGC DELAY)
An output amplitude is positive 2.2VP-P in the case of 87.5%
video modulation.
1
internal
driving current : 3mA
1.4VO-P
Pin 2 (APC FILTER)
In the locked state, the cut-off frequency of the filter is
adjusted effectively by an external resistor so that it will be
in the range of around 30 to 200kHz.
In case the cut-off frequency is lower, the pull-in speed
becomes slow. On the other hand, a higher cut-off frequency
widen the pull-in range and band width, which results
in a degradation in the S/N ratio. So, in the actual TV system
design, the appropriate constant should be chosen for getting
desirable performance considering above conditions.
2
Bias
12kΩ
[V2]
[Pin 2 output]
3.0VO-P
[FM mod. frequency]
fo
[IF input frequency]
100kHz
Pin 3 (EQ INPUT)
It is an open-base input.
The IF AGC does not work correctly, unless a DC element
of pin 8 output is applied to it.
3
Pin 4 (REG. OUTPUT)
4
10.5kΩ
It is a regulated 5V output which has current drive
capability of approximately 10mA.
3.8kΩ
8
MITSUBISHI ICs (TV)
M52334FP
PLL-SPLIT VIF/SIF IC
Pin 5, Pin 6 (VCO COIL)
850Ω
850Ω
5
6
466Ω
466Ω
Connecting a tuning coil and capacitor to these pins enables
an oscillation.
The tuning capacitor of about 30pF is recommended.
The oscillation frequency is tuned in f0.
In the actual adjustment, the coil is tuned so that the AFT
voltage is reached to Vcc/2 with f0 as an input.
The printed pattern around these pins should be designed
carefully to prevent an pull-in error of VCO, caused by the leakage
interference from the large signal level oscillator to adjacent pins.
The interconnection should be designed as short as possible.
In case the printed pattern has the interference problem, a capacitor
of about 1pF is connected between pin 5 or 6 and GND so as to
cancel the interference and keep enough pull-in range even
in a weak electric field.
Pin 7 (VCC)
VCC
The recommended supply voltage is 5V or 9 to 12V.
In the case of 5V supply, it should be tied to pin 17.
In the case of 9 to 12V supply, a regulated output of 5V
are available in pin 17.
7
Pin 8 (VIDEO OUTPUT)
An output amplitude is positive 2VP-P in the case of 87.5%
video modulation.
8
internal
driving current : 2mA
Pin 9 (GND)
6
It is ground (GND) for the SIF.
9
MITSUBISHI ICs (TV)
M52334FP
PLL-SPLIT VIF/SIF IC
Pin 10 (LIMITER INPUT)
Terminal voltage : 2.2V
Bias
10
The input impedance is 2kΩ.
2kΩ
2kΩ
Pin 11 (AF OUTPUT)
The FM detector can respond to the 4.5MHz intercarrier
signal without an adjustment and external components by
adopting the PLL technique.
The output DC voltages of 4.4V0-P and 2.4V0-P are in the
Vcc of 9V and 5V, respectively.
Since its output frequency is more than 100kHz in no
loading condition, it can also respond to the multi audio
broadcasting.
11
internal
driving current : 1mA
Pin 12 (AUDIO F/B)
Terminal voltage : 3.0V
The frequency response of the audio output is set by the
external capacitor of pin 12.
12
50kΩ
[Pin 11 output]
In the case of 0.1µF, the cut-off frequency is 35Hz.
50kΩ
[FM mod. frequency]
100kHz
Connecting series resistor to the capacitor above, can
reduce an audio output amplitude.
10
MITSUBISHI ICs (TV)
M52334FP
PLL-SPLIT VIF/SIF IC
Pin 13 (IF AGC FILTER)
VCC
In spite of the 1-pin filter configuration, 2-pin filter
characteristics are available by utilizing the dynamic AGC circuit.
[V8]
13
1kΩ
0
weak
electric field
strong
electric field
[IF input]
Pin 14 (RF AGC OUTPUT)
A current mode output is available in the reverse AGC operation.
The maximum
outflow current
is 0.2mA.
VCC
Tuner
14
(in open-loop condition)
[V14]
The maximum
inflow current
is 0.2mA.
0
weak
electric field
strong
electric field
[IF input]
Note: Connecting a nonpolarity capacitor of 1µF between pin14 and pin 18 improves AGC operating speed.
In that case, the capacitors between pin14/pin18 and ground should be removed.
Pin 15 (GND)
15
It is GND pin except for SIF.
Pin 16, Pin 17 (VIF INPUT)
Bias
5
SAW
4
1.2kΩ
1.2kΩ
11
Terminal voltage : 1.45V
It should be designed considering careful impedance
matching with the SAW filter.
MITSUBISHI ICs (TV)
M52334FP
PLL-SPLIT VIF/SIF IC
Pin 18 (RF AGC DELAY)
VCC
An applied voltage to the pin1 is for changing a RF AGC delay point.
In the 3-in-1 type∗ application, the regulated output from the regulator is
suitable for a power supply (Vcc) to it, because there may be difference
between the tuner and main board supply.
18
∗ TV tuner, VIF demodulator and RF modulator are togetherin one package.
Pin 19 (AFT OUTPUT)
Since an AFT output is provided by a high impedance source, the detection
sensitivity can be set by an external resistor.
The muting operation will be on in following two cases;
1) the APC is out of locking,
2) the video output becomes small enough in a weak
electric field.
VCC
The maximum
outflow current
is 0.2 mA.
Tuner
2
The maximum
inflow current
is 0.2 mA.
Vcc
[V2]
(in open-loop condition)
Vcc
2
0
[fo]
In the case of 5V supply, it should be considered that the maximum AFT and RF AGC
output are less than 4.2V and 4.7V, respectively.
Pin 20 (EQ F/B)
Both the external coil and capacitor determine the frequency response
of EQ output.
The series connected resistor is for damping.
16.8kΩ
20
500Ω
3.1kΩ
3.9kΩ
12