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 1 20 EQ F/B IF AGC FILTER 2 19 IF AGC FILTER EQ IN 3 18 RF AGC DELAY Vcc 4 17 VIF IN VCO COIL 5 16 VIF IN VCO COIL 6 15 GND APC SW 7 14 AFT OUT VIDEO OUT 8 13 RF AGC OUT APC FILTER 9 12 NFB LIMITER IN 10 11 AUDIO OUT 20pin SSOP MITSUBISHI ELECTRIC 1 MITSUBISHI ICs (TV) M52768FP PLL-INTER VIF/SIF BLOCK DIAGRAM and PERIPHERAL CIRCUIT IF IN Vcc RF AGC Delay AFT OUT Vcc AF OUT RF AGC OUT 20 19 18 IF AGC 17 16 15 14 13 12 11 AFT VIF AMP AF AMP RF AGC FM DET EQ AMP VIDEO DET APC APC SW LIM AMP VCO 1 EQ OUT 2 3 4 5 6 7 8 9 10 + Vcc 4.5MHz Filter 4.5MHz Trap MITSUBISHI ELECTRIC 2 MITSUBISHI ICs (TV) M52768FP PLL-IN TER VIF/SIF ABSOLUTE M AXIMUM RATINGS ( Ta = 25ºC, unless otherwise noted ) Parameter Ratings Symbol Supply Voltage 1 Unit Note Vcc 6.0 V Pd 624 mW Operating Temperature Topr -20 to +75 ºC Storage Temperature Tstg -40 to +150 ºC Power Consumption Temperature characteristics (maximum ratings) Allowable power consumption Pd [mW] 1000 800 600 400 200 0 -25 0 25 50 75 100 125 150 o Ambient temperature Ta [ C] MITSUBISHI ELECTRIC 3 MITSUBISHI ICs (TV) M52768FP PLL-INTER VIF/SIF ELECTRICAL CHARACTERISTICS VIF Section (Vcc=5V,Ta=25ºC unless otherwise noted) Measurement No. Parameter Test Test Input Input Symbol Circuit Point Point SG Icc 1 A - - Video Output Voltage 8 Vo det8 1 TP8 VIF IN 3 Video Output Voltage 1 Vo det 1 TP1A 4 Video S/N Video S/N 1 5 Video Band Width BW 6 Input Sensitiv ity 7 switches set to position 1 unless otherwise noted Limits MIN TY P MAX Unit Note 33 mA SG1 1.1 Vp-p VIF IN SG1 2.0 Vp-p TP1B VIF IN SG2 56 dB 1 1 TP1A VIF IN SG3 6.0 MHz 2 VIN MIN 1 TP1A VIF IN SG4 48 dBµ 3 Maximum Allowable Input VIN MAX 1 TP1A VIF IN SG5 110 dBµ 4 8 AGC Control Range Input GR - - - - 62 dB 5 9 IF AGC Voltage 1 V19 1 TP19 VIF IN SG6 3.1 V 10 IF AGC Voltage 2 V2 1 TP2 VIF IN SG6 3.1 V 11 Maximum RF AGC Voltage V13H 1 TP13 VIF IN SG6 4.75 V 12 Minimum RF AGC Voltage V13L 1 TP13 VIF IN SG7 0.1 V 13 RF AGC Delay Point V13 1 TP13 VIF IN SG8 93 dBµ 6 14 Capture Range U CL-U 1 TP1A VIF IN SG9 1.5 MHz 7 15 Capture Range L CL-L 1 TP1A VIF IN SG9 1.8 MHz 8 16 CL-T 1 - - - 3.3 MHz 9 1 Circuit Current 2 Capture Range T SW4=2 SW1=2 SW19=2 V19=Variable MITSUBISHI ELECTRIC 4 MITSUBISHI ICs (TV) M52768FP PLL-INTER VIF/SIF Measurement No. Parameter 17 AFT Sensitiv ity 18 AFT Maximum Voltage 19 AFT Minimum Voltage 20 AFT def eat 21 Inter Modulation Dif f erential 22 Gain Dif f erential 23 Phase 24 Sy nc. tip lev el Test Test Input Input Symbol Circuit Point Point SG switches set to position 1 unless otherwise noted Limits MIN TY P MAX Unit Note mV 10 kHz 1 TP14 VIF IN SG10 30 V14H 1 TP14 VIF IN SG10 4.8 V 10 V14L 1 TP14 VIF IN SG10 0.1 V 10 AFT def 1 1 TP14 VIF IN - 2.5 V IM 1 TP1A VIF IN SG11 40 dB DG 1 TP1A VIF IN SG12 2 % DP 1 TP1A VIF IN SG12 2 deg V1 SYNC 1 TP1A VIF IN SG2 0.8 V µ SW19=2 V19=Variable MITSUBISHI ELECTRIC 11 5 MITSUBISHI ICs (TV) M52768FP PLL-INTER VIF/SIF (Vcc=5V,Ta=25ºC unless otherwise noted) SIF Section Measurement No. Parameter Test Test Input Input Symbol Circuit Point Point SG switches set to position 1 unless otherwise noted Limits MIN TY P MAX Unit Note VoAF 1 1 TP11 SIF IN SG16 700 mVrms THD AF 1 1 TP11 SIF IN SG16 0.8 % 27 Limiting Sensitiv ity LIM 1 1 TP11 SIF IN SG17 42 dBµ 12 28 AM Rejection AMR 1 1 TP11 SIF IN SG18 55 dB 13 29 AF S/N AF S/N 1 1 TP11 SIF IN SG19 62 dB 14 25 AF Output AFOutput 26 Distortion MITSUBISHI ELECTRIC 6 MITSUBISHI ICs (TV) M52768FP PLL-INTER VIF/SIF Measuring Circuit Diagram VIF IN 51 150k TP14 V19 TP11 150k 1 2 30k TP13 0.1u 20 0.1u 20k TP19 7.5k 1:1 19 18 17 IF AGC 16 15 14 13 12 11 AFT VIF AMP AF AMP RF AGC FM DET EQ AMP VIDEO DET APC APC SW LIM AMP VCO 2 1 3 4 5 6 8 7 9 10 TP2 0.22u + 33u SW12 200 1K SW1 1 L TP1A P F 2 510 15u 2 1 330 TP8 51 470 4.5MHz Trap TP1B SW5 1 2 Vcc A Note) All the capacitors are 0.01µF, unless otherwise noted. The Measuring Circuit 1 is Mitsubishi standard evaluation fixture. MITSUBISHI ELECTRIC 7 MITSUBISHI ICs (TV) M52768FP PLL-INTER VIF/SIF INPUT SIGNAL SG 50Ω Termination 1 f0 = 45.75 MHz AM 20 KHz 77.8 % 2 f0 = 45.75 MHz 90 dBµ Cw f1 = 45.75 MHz 90 dBµ Cw 3 f2 = Frequency Variable 90 dBµ Mixed Signal 70 dBµ Cw 4 f0 = 45.75 MHz AM 20 KHz 77.8% Level Variable 5 f0 = 45.75 MHz AM 20 KHz 14.0% Level Variable 6 f0 = 45.75 MHz 80 dBµ Cw 7 f0 = 45.75 MHz 110 dBµ Cw 8 f0 = 45.75 MHz 9 f0 = Frequency Variable AM 20 KHz 10 f0 = Frequency Variable 90 dBµ Cw 11 f1 = 45.75 MHz 90 dBµ Cw f2 = 42.17 MHz 80 dBµ Cw f3 = 41.25 MHz 80 dBµ Cw 12 f0 = 45.75 MHz 87.5 % TV modulation Ten-step waveform Sync Tip Level 90 dBµ 13 f1 = 41.25 MHz 95 dBµ Cw 14 f1 = 41.25 MHz 75 dBµ Cw 15 f1 = 45.75 MHz f2 = 41.25 MHz 90 dBµ Cw 70 dBµ Cw 16 f0 = 4.5 MHz 17 f0 = 4.5 MHz Level Variable FM 400Hz ±25KHzdev 18 f0 = 4.5 MHz 90 dBµ 19 f0 = 4.5 MHz 90 dBµ Cw 20 f0 = 4.5 MHz Level Variable Cw Cw Level Variable 90 dBµ 77.8 % 90 dBµ Mixed Signal Mixed Signal FM 400 Hz ±25 KHzdev AM 400 Hz 30 % MITSUBISHI ELECTRIC 8 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. 0.7×Vo det S/N=20 log NOISE [dB] 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 f 2 and measure the value of (f2-f1) when the (f2-f1) component level reaches -3dB from the 1MHz component level as shown below. TP1A -3dB ( f2 - f1 ) 1 MHz BW 3. Input Sensitivity: VIN MIN Input SG4 (Vi=90dBµ) 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=90dBµ) 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 9 MITSUBISHI ICs (TV) M52768FP PLL-INTER VIF/SIF 5. AGC Control Range: GR GR = VIN MAX - VIN MIN [dB] 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 V 13H 1/2VCC V 13L Vi Vi [dBµ] 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] MITSUBISHI ELECTRIC 10 MITSUBISHI ICs (TV) M52768FP PLL-INTER VIF/SIF 10. AFT sensitivity µ, 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 µ= f(2) - f(3) [mV] [kHz] V 14H [mV/kHz] 2V V 14L 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. MITSUBISHI ELECTRIC 11 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] Audio output while SG17 is input. 30dB Audio output while SG20 is input. [dBµ] 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) MITSUBISHI ELECTRIC [dB] 12 MITSUBISHI ELECTRIC e 1 20 D y JEDEC Code – 10 11 b Weight(g) 0.08 A1 F c Detail F A2 A Lead Material Alloy 42 L1 E HE EIAJ Package Code SSOP20-P-225-0.65 L b2 b2 e1 I2 A A1 A2 b c D E e HE L L1 y Symbol 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 – Recommended Mount Pad e Plastic 20pin 225mil SSOP I2 20P2E-A MITSUBISHI ICs (TV) M52768FP PLL-INTER VIF/SIF DETAILED DIAGRAM OF PACKAGE OUTLINE 13 e1 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. 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MITSUBISHI ELECTRIC 14