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MITSUBISHI ICs (TV)
M52768FP
PLL-IN TER VIF/SIF
DESCRIPTION
M52768FP is a semiconductor integrated circuit consisting of VIF/SIF signal processing for CTVs and VCRs. M52768FP provide low cost and high performance system with the coil-less AFT.
FEATURES
Inter carrier /NTSC only(4.5MHz) Coil-less AFT. PLL FM demodulation for Audio. No external parts and adjustment. Video output is 2.0Vp-p through EQ AMP. Easy to add Buzz canceler. Hi speed IF AGC. Improve over modulation characteristics.
RECOM M ENDED OPERATING CONDITIONS
Supply Voltage Range (Vcc) * * * * * * * 4.5 to 5.5 V Rated Supply Voltage (Vcc) * * * * * * * 5.0 V
APPLICATION
TV,VTR PIN CONFIGURATION (TOP VIEW) EQ OUT IF AGC FILTER EQ IN Vcc VCO COIL VCO COIL APC SW VIDEO OUT APC FILTER LIMITER IN
1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11
EQ F/B IF AGC FILTER RF AGC DELAY VIF IN VIF IN GND AFT OUT RF AGC OUT NFB AUDIO OUT
20pin SSOP
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MITSUBISHI ICs (TV)
M52768FP
PLL-INTER VIF/SIF
BLOCK DIAGRAM and PERIPHERAL CIRCUIT
IF IN
RF AGC Delay Vcc
Vcc AFT OUT AF OUT RF AGC OUT
20
19
18
17
16
15
14
13
12
11
IF AGC
VIF AMP
AFT AF AMP RF AGC
EQ AMP
FM DET VIDEO DET APC SW VCO
APC
LIM AMP
1
2
3
4 +
5
6
7
8
9
10
EQ OUT
Vcc
4.5MHz Trap
4.5MHz Filter
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MITSUBISHI ICs (TV)
M52768FP
PLL-IN TER VIF/SIF
ABSOLUTE M AXIMUM RATINGS
( Ta = 25C, unless otherwise noted ) Parameter Supply Voltage 1 Power Consumption Operating Temperature Storage Temperature Symbol Vcc Pd Topr Tstg Ratings 6.0 624 -20 to +75 -40 to +150 Unit V mW C C Note
Temperature characteristics (maximum ratings) 1000 Allowable power consumption Pd [mW]
800
600
400
200
0 -25 0 25 50 75
o
100
125
150
Ambient temperature Ta [ C]
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MITSUBISHI ICs (TV)
M52768FP
PLL-INTER VIF/SIF
ELECTRICAL CHARACTERISTICS
VIF Section
No. Parameter
(Vcc=5V,Ta=25C unless otherwise noted)
Measurement Test Test Input Input Symbol Circuit Point Point SG
Icc 1 A switches set to position 1 unless otherwise noted
Limits
MIN TY P 33 MAX
Unit Note
mA
1 2 3 4 5 6 7 8 9 10 11 12 13 14
Circuit Current Video Output Voltage 8 Video Output Voltage 1 Video S/N
SW4=2
Vo det8 Vo det Video S/N BW VIN MIN VIN MAX GR V19
1 1
TP8 TP1A
VIF IN VIF IN VIF IN VIF IN VIF IN VIF IN VIF IN VIF IN VIF IN VIF IN VIF IN VIF IN VIF IN -
SG1 SG1 SW1=2 SW19=2 V19=Variable
1.1 2.0
Vp-p Vp-p
1
TP1B
SG2
56
dB
1
Video Band Width
1
TP1A
SG3
6.0
MHz
2
Input Sensitiv ity Maximum Allowable Input AGC Control Range Input IF AGC Voltage 1 IF AGC Voltage 2 Maximum RF AGC Voltage Minimum RF AGC Voltage RF AGC Delay Point Capture Range U
1
TP1A
SG4 SG5 -
48
dB
3 4
1 -
TP1A -
110
dB
62
dB V
5
1
TP19
SG6 SG6
3.1 3.1
V2 V13H
1 1
TP2 TP13
V V
SG6
4.75
V13L
1
TP13
SG7
0.1
V
V13
1
TP13
SG8
93
dB
6
CL-U
1
TP1A
SG9
1.5
MHz
7
15 Capture Range L 16
Capture Range T
CL-L
1
TP1A
SG9
1.8
MHz
8
CL-T
1
-
-
3.3
MHz
9
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MITSUBISHI ICs (TV)
M52768FP
PLL-INTER VIF/SIF
Measurement No. Parameter Test Test Input Input Symbol Circuit Point Point SG
1 TP14 VIF IN VIF IN VIF IN VIF IN VIF IN VIF IN VIF IN VIF IN SG10
switches set to position 1 unless otherwise noted
Limits
MIN TY P 30 MAX
Unit Note
mV 10 kHz V 10
17 18 19
AFT Sensitiv ity AFT Maximum Voltage AFT Minimum Voltage
V14H
1
TP14
SG10
4.8 0.1
V14L AFT def 1 IM
1
TP14 TP14
SG10 SW19=2 V19=Variable
V
10
20 AFT def eat 21 Inter Modulation 22 Gain
Dif f erential
1
2.5 40
V
1
TP1A
SG11
dB
11
DG
1
TP1A
SG12
2
%
23 Phase
Dif f erential
DP V1 SYNC
1
TP1A TP1A
SG12
2
deg
24 Sy nc. tip lev el
1
SG2
0.8
V
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MITSUBISHI ICs (TV)
M52768FP
PLL-INTER VIF/SIF
SIF Section
No. Parameter Test Test Input Input Symbol Circuit Point Point SG
VoAF 1 THD AF 1 LIM 1 AMR 1 AF S/N 1 1 TP11 TP11 SIF IN SIF IN SIF IN SIF IN SIF IN SG16
(Vcc=5V,Ta=25C unless otherwise noted)
Measurement
switches set to position 1 unless otherwise noted
Limits
MIN TY P 700 MAX
Unit Note
mVrms
25 AF Output 26 Distortion 27 Limiting Sensitiv ity 28 AM Rejection 29 AF S/N
AFOutput
1
SG16
0.8
%
1
TP11
SG17
42
dB
12
1 1
TP11 TP11
SG18
55 62
dB dB
13 14
SG19
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MITSUBISHI ICs (TV)
M52768FP
PLL-INTER VIF/SIF
Measuring Circuit Diagram
VIF IN
51 150k V19 2 1 30k 0.1u TP19 20k 1:1 TP14 150k TP13 0.1u 7.5k TP11
20
19
18
17
16
15
14
13
12
11
IF AGC
VIF AMP
AFT AF AMP RF AGC
EQ AMP
FM DET VIDEO DET APC SW VCO
APC
LIM AMP
1
2
TP2
3
4 + 33u
5
6
7
8
0.22u
9
10
SW12
SW1 1 L TP1A P F 2
1K 15u
200 510
1
2
330 470
TP8
51
4.5MHz Trap
TP1B SW5 1
Vcc
2
A Note) All the capacitors are 0.01F, unless otherwise noted. The Measuring Circuit 1 is Mitsubishi standard evaluation fixture.
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MITSUBISHI ICs (TV)
M52768FP
PLL-INTER VIF/SIF
INPUT SIGNAL
SG 1 2 3 4 5 6 7 8 9 10
50 Termination
f0 = 45.75 MHz AM 20 KHz 77.8 % f0 = 45.75 MHz f1 = 45.75 MHz 90 dB Cw 90 dB Cw 70 dB Cw Mixed Signal Level Variable Level Variable 90 dB
f2 = Frequency Variable
f0 = 45.75 MHz AM 20 KHz 77.8% f0 = 45.75 MHz AM 20 KHz 14.0% f0= 45.75 MHz f0 = 45.75 MHz f0 = 45.75 MHz 80 dB Cw 110 dB Cw Cw Level Variable AM 20 KHz 90 dB Cw
f0 = Frequency Variable f0 = Frequency Variable
77.8 %
90 dB
11
f1 = 45.75 MHz 90 dB Cw f2 = 42.17 MHz 80 dB Cw f3 = 41.25 MHz 80 dB Cw
Mixed Signal
12 13 14 15 16 17 18 19 20
f0 = 45.75 MHz 87.5 % TV modulation Ten-step waveform Sync Tip Level 90 dB f1 = 41.25 MHz f1 = 41.25 MHz f1 = 45.75 MHz f2 = 41.25 MHz f0 = 4.5 MHz 95 dB Cw 75 dB Cw 90 dB Cw 70 dB Cw Mixed Signal
90 dB
FM 400 Hz 25 KHzdev
f0 = 4.5 MHz Level Variable FM 400Hz 25KHzdev f0 = 4.5 MHz f0 = 4.5 MHz f0 = 4.5 MHz 90 dB AM 400 Hz 30 %
90 dB Cw Level Variable Cw
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MITSUBISHI ICs (TV)
M52768FP
PLL-INTER VIF/SIF
Notes
1. Video S/N Input SG2 to VIF IN and measure the video out(Pin 1) noise in r.m.s at TP1B through a 5MHz (-3dB) L.P.F. S/N=20 log 0.7xVo det NOISE 2. Video Band Width: BW 1. Measure the 1MHz component level of Video output TP1A with a spectrum analyzer when SG3(f2=44.75MHz) is input to VIF IN. At that time, measure the voltage at TP19 with SW19, set to position 2, and then fix V19 at that voltage. 2. Reduce f2 and measure the value of (f2-f1) when the (f2-f1) component level reaches -3dB from the 1MHz component level as shown below. TP1A [dB]
-3dB
( f2 - f1 ) 1 MHz 3. Input Sensitivity: VIN MIN Input SG4 (Vi=90dB) to VIF IN , and then gradually reduce Vi and measure the input level when the 20KHz component of Video output TP1A reaches 3dB from Vo det level. 4. Maximum Allowable Input: VIN MAX 1. Input SG5 (Vi=90dB) to VIF IN , and measure the level of the 20KHz component of Video output. 2. Gradually increase the Vi of SG and measure the input level when the output reaches -3dB. MITSUBISHI ELECTRIC BW
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MITSUBISHI ICs (TV)
M52768FP
PLL-INTER VIF/SIF
5. AGC Control Range: GR GR = VIN MAX - VIN MIN 6. RF AGC Operating Voltage: V13 Input SG8 to VIF IN and gradually reduce Vi and then measure the input level when RF AGC output TP17 reaches 1/2 VCC, as shown below.
TP13 Voltage V13H
[dB]
1/2VCC
V13L Vi Vi [dB]
7. Capture range: CL - U 1. Increase the frequency of SG9 until the VCO is out of locked-oscillation. 2. And decrease the frequency of SG9 and measure the frequency fU when the VCO is locked. CL - U = fU - 45.75 [MHz]
8. Capture range: CL - L 1. Decrease the frequency of SG9 until the VCO is out of locked-oscillation. 2. And increase the frequency of SG9 and measure the frequency fL when the VCO is locked. CL - L = 45.75 - fL [MHz]
9. Capture range: CL - T CL - T = CL - U + CL - L [MHz]
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MITSUBISHI ICs (TV)
M52768FP
PLL-INTER VIF/SIF
10. AFT sensitivity , Maximum AFT voltage V14H , Minimum AFT voltage V14L 1. Input SG10 to VIF IN , and set the frequency of SG10 so that the voltage of AFT output TP14 is 3[V] . This frequency is named f(3). 2. Set the frequency of SG10 so that the AFT output voltage is 2[V]. This frequency is named f(2) 3. IN the graph, maximum and minimum DC voltage are V14H and V14L, respectively.
TP14 Voltage 3V
1000 = f(2) - f(3)
[mV] [kHz] [mV/kHz]
2V
V14H
V14L f(3) f(2) f [MHz]
11. Inter modulation: IM 1. Input SG11 to VIF IN, and measure video output TP9 with an oscilloscope. 2. Adjust AGC filter voltage V19 so that the m inimum DC level of the output waveform is Sync. tip level1.5V. 3. At this time, measure TP9 with a spectrum analyzer . The inter modulation is defined as a difference between 0.92MHz and 3.58 MHz frequency components.
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MITSUBISHI ICs (TV)
M52768FP
PLL-INTER VIF/SIF
12. Limiting Sensitivity: LIM 1. Input SG17 to SIF IN, and measure the 400Hz component level of AF output TP11. 2. Input SG20 to SIF IN, and measure the 400Hz component level of AF output TP11. 3. The input limiting sensitivity is defined as the input level when a difference between each 400Hz components of audio output (TP11) is 30dB, as shown below.
Audio Output [mVrms] 30dB Audio output while SG17 is input.
Audio output while SG20 is input.
[dB]
SIF Input
13. AM Rejection: AMR 1. Input SG18 to SIF IN ,and measure the output level of Audio output (TP11). This level is named VAM. 2. AMR is; AMR = 20log
VoAF (mVr.m.s) VAM (mVr.m.s) [dB]
14. AF S/N: AF S/N 1. Input SG19 to SIF IN ,and measure the output noise level of Audio output (TP11). This level is named VN. 2. S/N is; S/N = 20log VoAF (mVr.m.s) VN (mVr.m.s) [dB]
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20P2E-A
Plastic 20pin 225mil SSOP
Weight(g) 0.08 Lead Material Alloy 42 e b2
EIAJ Package Code SSOP20-P-225-0.65
JEDEC Code -
HE
E
F Symbol
10
e1
Recommended Mount Pad
DETAILED DIAGRAM OF PACKAGE OUTLINE
L1
e b
y
c Detail F
L
MITSUBISHI ELECTRIC
A A2 A1 A A1 A2 b c D E e HE L L1 y b2 e1 I2
1
D
Dimension in Millimeters Min Nom Max - - 1.45 0 0.1 0.2 - 1.15 - 0.17 0.22 0.32 0.13 0.15 0.2 6.4 6.5 6.6 4.3 4.4 4.5 - 0.65 - 6.2 6.4 6.6 0.3 0.5 0.7 - 1.0 - - - 0.1 0 - 10 - 0.35 - - 5.8 - - 1.0 -
I2
20
11
M52768FP
MITSUBISHI ICs (TV)
PLL-INTER VIF/SIF
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MITSUBISHI ICs (TV)
M52768FP
PLL-INTER VIF/SIF Keep safety first in your circuit designs! lMitsubishi Electric Corporation puts the maximum effort into making semiconductor products better and more reliable, but there is always the possibility that trouble may occur with them. Trouble with semiconductors may lead to personal injury, fire or property damage. Remember to give due consideration to safety when making your circuit designs, with appropriate measures such as (i) placement of substitutive, auxiliary circuits, (ii) use of nonflammable material or (iii) prevention against any malfunction or mishap.
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