LA7567EV

Ordering number : ENN7779A SANYO Semiconductors DATA SHEET Monolithic Linear IC LA7567EV Overview TV and VCR VIF/SIF IF Signal-Processing Circuit with PAL/NTSC Multi-Format Audio Support The LA7567EV is PAL/NTSC multi-format audio VIF/SIF IF ICs that adopt a semi-adjustment-free system. The VIF block adopts a technique that makes AFT adjustment unnecessary by adjusting the VCO, thus simplifying the adjustment steps in the manufacturing process. PLL detection is adopted in the FM detector to support multi-format audio detection. A built-in SIF converter is included to simplify multi-format system designs. A 5V power-supply voltage is used to match that used in most multimedia systems. In addition, these ICs also include a buzz canceller to suppress Nyquist buzz and provide high audio quality. The LA7567EV feature improvements over the LA7567N and LA7567NM in the audio and video signal-to-noise ratios and the video signal. Functions • VIF block: VIF amplifier, PLL detector, BNC, RF AGC, EQ amplifier, AFT, IF AGC, buzz canceller. • First SIF block: first SIF, first SIF detector, AGC. • SIF block: multi-format SIF converter, limiter amplifier, PLL FM detector. Features • • • • No AFT or SIF coils are required, making these circuits adjustment free. A PAL/NTSC multi-format audio system can be constructed easily. Built-in buzz canceller for excellent audio performance. VCC = 5V, low power dissipation (250mW) Specifications Maximum Ratings at Ta = 25°C Parameter Maximum supply voltage Circuit voltage Symbol VCC max V13, V17 I6 Circuit current I10 I24 Allowable power dissipation Operating temperature Storage temperature Pd max Topr Ta ≤ 70°C, when mounted on a PCB* Conditions Ratings 6 VCC –3 –10 –2 400 –20 to +70 –55 to +150 Unit V V mA mA mA mW °C °C Tstg *: Printed circuit board: 114.3mm × 76.1mm × 1.6mm, glass epoxy board. Any and all SANYO products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft's control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. Consult with your SANYO representative nearest you before using any SANYO products described or contained herein in such applications. SANYO assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all SANYO products described or contained herein. SANYO Electric Co.,Ltd. Semiconductor Company TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN 81505MS OT B8-7701 No.7779-1/21 LA7567EV Operating Conditions at Ta = 25°C Parameter Recommended supply voltage Operating supply voltage range Symbol VCC VCC op Conditions Ratings 5 4.5 to 5.5 Unit V V Electrical Characteristics at Ta = 25°C, VCC = 5V, fp = 38.9MHz Parameter [VIF Block] Circuit current Maximum RF AGC voltage Minimum RF AGC voltage Input sensitivity AGC range Maximum allowable input No-signal video output voltage Sync. signal tip voltage Video output level Black noise threshold voltage Black noise clamp voltage Video signal-to-noise ratio C-S beat Frequency characteristics Differential gain Differential phase No-signal AFT voltage Maximum AFT voltage Minimum AFT voltage AFT detection sensitivity VIF input resistance VIF input capacitance APC pull-in range (U) APC pull-in range (L) AFT tolerance frequency 1 VCO1 maximum variability range (U) VCO1 maximum variability range (L) VCO control sensitivity [First SIF Block] Conversion gain 5.5 iMHz output level First SIF maximum input First SIF input resistance First SIF input capacitance [SIF Block] Limiting sensitivity FM detector output voltage * AMR rejection ratio Total harmonic distortion SIF S/N [SIF Converter] Conversion gain Maximum output level Carrier suppression ratio Oscillator level Oscillator leakage Oscillator stopped current VG (SIF) V max VGR (5.5) VOSC OSCleak I4 8 103 15 35 14 11 109 21 70 25 300 14 115 dB dBµV dB mVp-p dB µA Vli (lim) VO (FM) AMR THD S/N (FM) 57 5.5MHz ±50kHz 42 570 50 48 710 60 0.3 62 0.8 54 855 dBµV mVrms dB % dB VG SO Si max Ri (SIF) Ci (SIF) 33.4MHz 33.4MHz 22 32 50 28 70 100 2 3 32 110 dB mVrms mVrms kΩ pF I5 V14H V14L VI GR VI max V6 V6 tip VO VBTH VBCL S/N IC-S fC DG DP V13 V13H V13L Sf Ri Ci fpu fpl dfa1 dfu dfl B 1.0 –450 1.0 38.9MHz 38.9MHz 0.7 2.0 4.0 0 17 6MHz S1 = OFF 33 58 95 3.0 1.05 1.46 0.5 1.6 48 38 –3.0 40.8 VCC – 0.5 48.0 VCC 0 39 63 100 3.3 1.35 1.7 0.8 1.9 52 43 –1.5 3.0 3 2.5 4.4 0.18 24 1.5 3 1.5 –1.5 –50 1.5 –1.5 2.0 –1.0 4.0 –0.9 350 6.5 5 3.0 5.0 1.00 32 3.6 1.64 1.94 1.1 2.2 0.5 45 55.2 mA V V dBµV dB dBµV V V Vp-p V V dB dB dB % deg V V V mV/kHz kΩ pF MHz MHz kHz MHz MHz kHz/mV Symbol Conditions Ratings min typ max Unit Note: *The FM detector output level can be reduced and the FM dynamic range can be increased by inserting a resistor and a capacitor in series between pin 23 and ground. No.7779-2/21 LA7567EV Package Dimensions unit : mm 3175C Pd max -- Ta 500 7.8 Allowable power dissipation, Pd max - mW Printed circuit board: 114.3mm × 76.1mm × 1.6mm glass epoxy board 24 13 400 300 5.6 7.6 0.5 200 1 0.65 (0.33) 12 0.15 0.22 1.5max (1.3) 100 0 --20 0 20 40 60 80 100 ILA07068 Ambient temperature, Ta - °C 0.1 SANYO : SSOP24 (275mil) Pin Assignment 2nd SIF INPUT BIAS FILTER MIX OUT CER.OSC VCC VIDEO OUT EQ FILTER EQ INPUT APC FILTER 1 2 3 4 5 6 24 FM DET OUT 23 FM FILTER 22 1st SIF OUT (NICAM OUT) 21 RF AGC VR 20 GND 19 VIF LA7567EV 7 8 9 18 VIF 17 IF AGC FILTER 16 1st SIF AGC FILTER 15 1st SIF INPUT 14 RF AGC OUT 13 AFT OUT ILA06680 VIDEO DET OUT 10 VCO COIL 11 VCO COIL 12 Top view No.7779-3/21 LA7567EV Internal Equivalent Circuit and External Components IF INPUT 9V 30kΩ 10kΩ-B 0.01µF AUDIO OUTPUT 0.01µF RFAGC VR 5.6kΩ 1µF + SAW(P) 0.022µF 0.01µF RF AGC OUTPUT 0.01µF 100kΩ 100kΩ AFT OUTPUT SAW (S) 15 14 100Ω 24 23 1kΩ 1kΩ 22 21 20 19 18 2kΩ 17 16 1kΩ 13 1kΩ 300Ω 1kΩ 1kΩ 2kΩ 1kΩ 2kΩ 30pF 620Ω 6kΩ 500Ω 10kΩ V 10kΩ 1kΩ 1kΩ 1kΩ 1.2kΩ 1.2kΩ 12 1kΩ 3kΩ 10kΩ V V 400Ω 400Ω 200Ω 1V 9.2kΩ 200Ω 1kΩ 2kΩ 1 2 0.47 to 1µF 3 4 68Ω 500k OSC 5 6 7 8 0.47µF + 9 150Ω 10 11 100µF 330Ω + 0.01µF BPF 6MHz 3kΩ 330Ω VCO COIL VCC GND ILA06681 VIDEO OUT 0.01µF No.7779-4/21 LA7567EV AC Characteristics Test Circuit VIFIN 1stSIFOUT (NICAMOUT) RFAGC VR 0.01µF 10kΩ-B FMDETOUT (D) 5.6kΩ 1µF + 23 22 51Ω 1stSIFIN 51Ω 30kΩ 9V RF AGC OUT (F) 100kΩ IF AGC 0.01µF (M) 0.01µF 0.01µF 0.01µF (M) 0.01µF 0.01µF GND 0.01µF 1000pF 24 21 20 19 18 17 16 15 14 13 FM DET RF AGC IF AGC VIF AMP AGC 1st AMP VIDEO DET 1st DET AFT HPF LIM AMP HPF MIX HPF 1 0.01µF 51Ω 2 3 S2 10kΩ 4 68Ω + 500kHz 5 0.01µF S1 6 100kΩ EQ AMP 7 8 + 1.5kΩ 150Ω 9 0.47µF 10 11 24pF VCO 12 1µF + 330Ω 2ndSIFIN CONV.OUT (E) VIDEO OUT (A) 560Ω 100kΩ AFT OUT (B) VCC GND ILA06682 Test Circuit Impedance analyzer VIF IN 0.01µF 10kΩ 0.01µF 0.01µF 0.01µF 0.01µF 0.01µF 0.01µF 1st SIF IN 0.01µF 0.01µF 0.01µF 100kΩ 24 23 22 21 20 19 18 17 16 15 14 13 LA7567EV 1 0.01µF 2 3 4 10kΩ 5 6 7 8 330Ω 9 10 11 12 0.01µF 100kΩ 100µF + VCC ILA06683 No.7779-5/21 LA7567EV Test Conditions V1. Circuit current . . . . . . . . . . . . [I5] (1) (2) (3) (4) Internal AGC Input a 38.9MHz 10mVrms continuous wave to the VIF input pin. RF AGC Vr MAX Connect an ammeter to the VCC and measure the incoming current. V2.V3. Maximum RF AGC voltage, Minimum RF AGC voltage . . . . . . [V14H, V14L] (1) (2) (3) (4) Internal AGC Input a 38.9MHz 10mVrms continuous wave to the VIF input pin. Adjust the RF AGC Vr (resistor value max.) and measure the maximum RF AGC voltage. (F) Adjust the RF AGC Vr (resistor value min.) and measure the minimum RF AGC voltage. (F) V4. Input sensitivity. . . . . . . . . . . . . . . . . . . . . . . . [Vi] (1) (2) (3) (4) Internal AGC fp = 38.9MHz 400Hz 40% AM (VIF input) Turn off the S1 and put 100kΩ through. VIF input level at which the 400Hz detection output level at test point A becomes 0.64Vp-p. V5. AGC range . . . . . . . . . . . . . . . . . . . . . . . . . . . . [GR] (1) Apply the VCC voltage to the external AGC IF AGC (pin 17). (2) In the same manner as for the V4 (input sensitivity),measure the VIF input level at which the detection output level becomes 0.64Vp-p .............Vi1. (3) GR = 20log Vi1 Vi dB V6. Maximum allowable input. . . . . . . . . . . . . . . . [VI max] (1) Internal AGC (2) fp = 38.9MHz 15kHz 78% AM (VIF input) (3) VIF input level at which the detection output level at test point A is video output (Vo) ±1dB V7. No-signal video output voltage . . . . . . . . . . . [V6] (1) Apply the VCC voltage to the external AGC, IF AGC (pin 17). (2) Measure the DC voltage of VIDEO output (A). V8. Sync. signal tip voltage . . . . . . . . . . . . . . . . . [V6tip] (1) Internal AGC (2) Input a 38.9MHz 10mVrms continuous wave to the VIF input pin. (3) Measure the DC voltage of VIDEO output (A). V9. Video output level . . . . . . . . . . . . . . . . . . . . . . [VO] (1) Internal AGC (2) fp = 38.9MHz 15kHz 78% AM Vi = 10mVrms (VIF input) (3) Measure the peak value of the detection output level at test point A. . . . . . . . Vp-p No.7779-6/21 LA7567EV V10.V11. Black noise threshold level and clamp voltage . . . . . . [VBTH, VBCL] (1) Apply DC voltage to the external AGC, IF AGC (pin 17) and adjust the voltage. (2) fp = 38.9MHz 400Hz 40% AM10mVrms (VIF input) (3) Adjust the IF AGC (pin 17) voltage to operate the noise canceller. Measure the VBTH, VBCL at test point A. VBCL Video output (V) VBTH Time V12. Video S/N . . . . . . . . . . . . . . . . . . . . . . . . . . . . [S/N] (1) Internal AGC (2) fp = 38.9MHz CW = 10mVrms (VIF input) (3) Measure the noise voltage at test point A in RMS volts through a 10kHz to 4MHz band-pass filter. Noise voltage (N) (4) S/N = 20 log Video portion (Vp-p) Noise voltage (Vrms) = 20 log 1.12Vp-p Noise voltage (Vrms) (dB) V13. C/S beat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [ICS] (1) Apply DC voltage to the external AGC IF AGC (pin 17) and adjust the voltage. (2) fp = 38.9MHz CW;10mVrms fc = 34.47MHz CW;10mVrms-10dB fs = 33.4MHz CW;10mVrms-10dB (3) Adjust the IF AGC (pin 17) voltage so that the output level at test point A becomes 1.3Vp-p. (4) Measure the difference between the levels at 4.43MHz and 1.07MHz. C/S beat Output (dB) 1.07MHz 4.43M 5.5M Frequency(MHz) V14. Frequency characteristics . . . . . . . . . . . . . . [fc] (1) Apply DC voltage to the external AGC IF AGC (pin 17) and adjust the voltage. (2) SG1: 38.9MHz continuous wave 10mVrms SG2: 38.8MHz to 32.9MHz continuous wave 2mVrms Add the SG1 and SG2 signals using a T pat and adjust each SG signal level so that the above-mentioned levels are reached and input the added signals to the VIF IN. (3) First set the SG2 frequency to 38.8MHz, and then adjust the IF AGC voltage (V17) so that the output level at test point A becomes 0.5Vp-p.........V1 (4) Set the SG2 frequency to 32.9MHz and measure the output level..........V2 V2 (5) Calculate as follows: fc = 20log (dB) V1 No.7779-7/21 LA7567EV V15.V16. Differential gain, differential phase . . . [DG, DP] (1) Internal AGC (2) fp = 38.9MHz ALP50% 87.5% modulation video signal Vi = 10mVrms (3) Measure the DG and DP at test point A V17. No signal AFT voltage . . . . . . . . . . . . . . . . . [V13] (1) Internal AGC (2) Measure the DC voltage at the AFT output (B). V18.V19.V20. Maximum minimum AFT output voltage, AFT detection sensitivity . . . . [V13H, V13L, Sf] (1) (2) (3) (4) Internal AGC fp = 38.9MHz ±1.5MHz Sweep = 10mVrms (VIF input) Maximum voltage: V13H, minimum voltage: V13L Measure the frequency deviation at which the voltage at test point B changes from V1 to V2. ..........∆f Sf = 2000(mV) ∆f (kHz) mV/kHz ∆f AFT output (V) V13H V1 ; 3.5V V2 ; 1.5V V13L IF frequency (MHz) V21.V22. VIF input resistance, Input capacitance . . . . . . . . . . [Ri, Ci] (1) Referring to the input impedance Test Circuit, measure Ri and Ci with an impedance analyzer. V23.V24. APC pull-in range. . . . . . . . . . . . . . . . . . [fpu, fpl] (1) Internal AGC (2) fp = 33MHz to 44MHz continuous wave; 10mVrms (3) Adjust the SG signal frequency to be higher than fp = 38.9MHz to bring the PLL to unlocked state. Note: GThe PLL is assumed to be in unlocked state when a beat signal appears at test point A. (4) When the SG signal frequency is lowered, the PLL is brought to locked state again. ...........(f1) (5) Lower the SG signal frequency to bring the PLL to unlocked state. (6) When the SG signal frequency is raised, the PLL is brought to locked state again. ...........(f2) (7) Calculate as follows: fpu = f1 - 38.9MHz fpl = f2 - 38.9MHz V25. AFT tolerance frequency . . . . . . . . . . . . . . . [∆Fa1] (1) Internal AGC (2) SG1:37.9MHz to 40.9MHz variable continuous wave 10mVrmns (3) Adjust the SG1 signal frequency so that the AFT output DC voltage (test point B) becomes 2.5V; that SG1 signal frequency is f1. (4) External AGC (Adjust the V17.) (5) Apply 5V to the IFAGC (pin 17) and then pick up the VCO oscillation frequency from GND, etc. and measure the frequency (f2) (6) Calculate as follows: AFT tolerance frequency ∆Fa1 = f2 - f1(kHz) No.7779-8/21 LA7567EV V26.V27. VCO Maximum variable range (U, L) . . [dfu, dfl] (1) Apply the VCC voltage to the external AGC, IF AGC (pin 17). (2) Pick up the VCO oscillation frequency from the VIDEO output (A), GND, etc. and adjust the VCO coil so coil that the frequency becomes 38.9MHz. (3) fl is taken as the frequency when 1V is applied to the APC pin (pin 9). In the same manner, fu is taken as the frequency when 5V is applied to the APC pin (pin 9). dfu = fu - 38.9MHz dfl = fl - 38.9MHz V28. VCO control sensitivity. . . . . . . . . . . . . . . . . [β] (1) Apply the VCC voltage to the external AGC, IF AGC (pin 17). (2) Pick up the VCO oscillation frequency from the VIDEO output (A), GND, etc. and adjust the VCO coil so that the frequency becomes 38.9MHz. (3) f1 is taken as the frequency when 3.0V applied to the APC pin (pin 9). In the same manner, f2 is taken as the frequency when 3.4V is applied to the APC pin (pin 9). β= f2 – f1 400 ( kHz mV ) F1. First SIF conversion gain . . . . . . . . . . . . . . . . [VG] (1) Internal AGC (2) fp = 38.9MHz CW; 10mV (VIF input) fs = 33.4MHz CW; 500µV (First SIF input) . . . . V1 (3) Detection output level at test point C (Vrms) . . . . V2 (5.5MHz) (4) VG = 20log V2 V1 dB F2. 5.5MHz output level. . . . . . . . . . . . . . . . . . . . . [SO] (1) Internal AGC (2) fp = 38.9MHz CW; 10mV (VIF input) fs = 33.4MHz CW; 10mV (First SIF input) . . . . . . . . . . . . . . . . . V1 (3) Detection output level at test point C (5.5MHz) . . . . . . . . . . . . . . SO(mVrms) F3. 1st SIF maximum input . . . . . . . . . . . . . . . . . . [Si max] (1) Internal AGC (2) fp = 38.9MHz CW; 10mV (VIF input) fs = 33.4MHz CW; variable (First SIF input) (3) Input level at which the detection output at test point C (5.5MHz) becomes So ±2dB......Si max F4. F5. First SIF input resistance, input capacitance . . . . [Ri(SIF1), Ci(SIF1)] (1) Using an input analyzer, measure Ri and Ci in the input impedance measuring circuit. No.7779-9/21 LA7567EV S1. SIF limiting sensitivity . . . . . . . . . . . . . . . . . . [Vli(lim)] (1) (2) (3) (4) Apply the VCC voltage to the external AGC, IF AGC (pin 17). fs = 5.5MHz fm = 400Hz ∆F = ±30kHz (SIF input) Set the SIF input level to 100mVrms and then measure the level at test point D.......V1 Lower the SIF input level until V1-3dB occurs. Measure the input level at that moment. S2–5. S7–10. FM detection output voltage, distortion factor . . . . . . [VO(FM, THD] (1) Apply the VCC voltage to the external AGC, IF AGC (pin 17). (2) fs = 4.5MHz fm = 1kHz ∆F = ±25kHz, fs = 5.5MHz or 6.0MHz fm = 1kHz ∆F = ±50kHz, (SIF input Vi = 100mVrms) (3) Assign the level at test point D to the FM detection output voltage and measure the distortion factor. S3. AM rejection ratio . . . . . . . . . . . . . . . . . . . . . . [AMR] (1) Apply the VCC voltage to the external AGC, IF AGC (pin 17). (2) fs = 5.5MHz fm = 400Hz AM = 30% (SIF input Vi=100mVrms) (3) Measure the output level at test point D............VAM (4) AMR = 20log VO(DET) VAM dB S5. SIF S/N . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [S/N] (1) External AGC (V17 = VCC) (2) fs = 5.5MHz NO MOD Vi = 100mVrms (3) Measure the output level at test point D...........Vn (4) S/N = 20log VO(DET) Vn dB C1. Converter conversion gain . . . . . . . . . . . . . . VG(SIF) (1) Internal AGC (2) fp = 38.9MHz CW; 10mV (VIF input) fs = 33.4MHz CW; 316µV (First SIF input) (3) Measure the 6MHz component at test point E (MIX output). ...................V1 (4) Measure the 5.5MHz component at test point F (NICAM output). ...........V2 (5) VG mix = 20log V1 V2 dB C2. SIF converter maximum output level . . . . . . [Vmax] (1) Internal AGC (2) fp = 38.9MHz CW; 10mV (VIF input) fs = 33.4MHz CW; 10mV (First SIF input) (3) Measure the 6MHz component at test point E (MIX output). .........Vmax(dBµV) C3. Carrier suppression ratio (VGR(5.5)) (1) Internal AGC (2) fp = 38.9MHz CW; 10mV (VIF input) fs = 33.4MHz CW; 316µV (First SIF input) (3) Measure the 6MHz component at test point E (MIX output). .........V6 (dBµV) (4) Measure the 5.5MHz component at test point E (MIX output). ......V5.5 (dBµV) (5) Perform the following calculation. Carrier suppression ratio VGR(5.5)(dB) = V6 - V5.5 No.7779-10/21 LA7567EV C5. OSC leakage (OSC leak) (1) Internal AGC (2) fp = 38.9MHz CW; 10mV(VIF input) fs = 33.4MHz CW; 316µV(First SIF input) (3) Measure the 6MHz component at test point E (MIX output). ..........V6(dBµV) (4) Measure the 500kHz component at test point E (MIX output). .......V0.5(dBµV) (5) Perform the following calculation. Carrier suppression ratio OSCleak(dB)=V6 - V0.5 Note 1) Note 2) Unless otherwise specified for VIF test, apply the VCC voltage to the IF AGC and adjust the VCO coil so that oscillation occurs at 38.9MHz. Unless otherwise specified, the SW1 must be ON. No.7779-11/21 LA7567EV Application Circuit Diagrams PAL SPLIT TSF5315 IN PUT SAW (S) 0.01µF 1000pF 100kΩ RF AGC OUT (M) 0.022µF 1µF 10kΩ-B 0.01µF 5.1kΩ (M) 0.01µF + 9V 30kΩ GND SAW(P) AF OUT 24 23 22 21 20 19 18 17 16 15 14 13 FM DET RF AGC IF AGC VIF AMP AGC 1st AMP VIDEO DET 1st DET AFT HPF LIM AMP HPF MIX HPF 1 2 + EQ AMP 4 68Ω 100µF + VCO 3 5 0.01µF 6 7 8 9 0.47µF 150Ω 10 560Ω 11 12 BPF 330Ω 15µH 330Ω VCC GND VIDEO OUT ILA06684 NT (US) SPLIT IN PUT SAW (S) RF AGC OUT (M) 0.022µF 0.01µF 9V 30kΩ TSF1241 SAW(P) 1µF AF OUT (M) 0.01µF 10kΩ-B 7.5kΩ + 0.01µF 1000pF GND 1µH 1kΩ 100kΩ 2.2kΩ 100kΩ AFT OUT 24 23 22 21 20 19 18 17 16 15 14 13 FM DET RF AGC IF AGC VIF AMP AGC 1st AMP VIDEO DET 1st DET AFT HPF LIM AMP HPF MIX HPF 1 1µF 2 + EQ AMP 4 100µF 10kΩ + VCO 8 9 0.47µF 150Ω 10 560Ω 11 12 3 5 0.01µF 6 7 BPF 330Ω 15µH 330Ω VCC GND VIDEO OUT ILA06685 2.2kΩ 100kΩ AFT OUT No.7779-12/21 LA7567EV JAPAN SPLIT IN PUT TSF1137 SAW (S) 0.01µF 1000pF 100kΩ 9V RF AGC 30kΩ OUT (M) 0.022µF 0.01µF (M) 0.01µF 10kΩ-B AF OUT 1µF 7.5kΩ + GND SAW(P) 1kΩ 24 23 22 21 20 19 18 17 16 15 14 13 FM DET RF AGC IF AGC VIF AMP AGC 1st AMP VIDEO DET 1st DET AFT HPF LIM AMP HPF MIX HPF 1 1µF + EQ AMP 4 10kΩ 100µF + VCO 8 9 0.47µF 150Ω 10 560Ω 11 12 2 3 5 0.01µF 6 7 BPF 330Ω 15µH 330Ω VCC GND VIDEO OUT ILA06686 NT (US) INTER IN PUT TSF5220 9V RF AGC 30kΩ OUT 0.01µF 1000pF (M) 0.022µF 2.2kΩ 1µF (M) 0.01µF AF OUT 10kΩ-B 7.5kΩ 62pF 22µH + GND SAW(P) 100kΩ 100kΩ AFT OUT 24 23 22 21 20 19 18 17 16 15 14 13 FM DET RF AGC IF AGC VIF AMP AGC 1st AMP VIDEO DET 1st DET AFT * INTER 16PIN GND HPF LIM AMP HPF MIX HPF 1 1µF 2 + EQ AMP 4 100kΩ 100µF + VCO 8 9 0.47µF 150Ω 10 560Ω 11 12 3 5 0.01µF 6 7 BPF 330Ω 15µH 330Ω VCC GND VIDEO OUT ILA06687 2.2kΩ 100kΩ AFT OUT No.7779-13/21 LA7567EV Sample Application Circuit When the SIF, first SIF, AFT, and RF AGC circuits are not used: • When the SIF circuit is not used: Leave pins 1, 23, and 24 open. Connect pin 2 to ground through a 2kΩ resistor. • When the first SIF circuit is not used: Leave pins 3, 4, 15 and 22 open. Connect pin 16 to ground. • When the AFT circuit is not used: Since there is no way to defeat the AFT circuit, connect a 100kΩ resistor and a 0.01µF capacitor in parallel between pin 13 and ground. • When the RF AGC circuit is not used: Leave pins 14 and 21 open. Insert a 0.01µF capacitor between pin 21 and ground for oscillation prevention. IN PUT TSF5315 SAW (S) 100kΩ GND SAW(P) (M) 1kΩ AFT OUT 24 23 22 21 20 19 18 17 16 15 14 13 FM DET RF AGC IF AGC VIF AMP AGC 1st AMP VIDEO DET 1st DET AFT HPF LIM AMP HPF MIX HPF 1 2 2kΩ 3 4 100µF + EQ AMP 5 0.01µF 6 7 8 9 0.47µF 150Ω 10 560Ω 11 VCO 12 15µH 330Ω VCC GND VIDEO OUT ILA06688 2.2kΩ No.7779-14/21 LA7567EV Pin Functions Pin No. Pin Description Equivalent circuit 1 SIF INPUT • SIF input. The input impedance is about 1kΩ. Since buzzing and buzz beating can occur if interference enters this input pin, care must be taken when design the pattern layout for this pin. Note that the video and chrominance signals are especially likely to interfere with the audio signal. Also, the VIF carrier signal can also cause interference. 1 1kΩ 1kΩ ILA06689 4.2V 24kΩ 2 2 FM power supply filter • FM detector bias line filter input. Used to improve the FM detector signal-to-noise ratio. C1 should be at least 0.47µF, and 1µF is recommended. If the FM detector is not used, connect pin 2 to ground through a 2kΩ resistor. This stops the FM detector VCO. 4kΩ C1 TO VCO BIAS 14kΩ ILA06690 3 200Ω 3 4 SIF converter • Pin 3 is the SIF converter output. The signal is passed through a 6MHz bandpass filter and input to the SIF circuit. There is a 200Ω resistor in series with the emitter-follower output. • Pin 4 is the SIF converter 500kHz oscillator connection. Since this oscillator circuit includes an ALC, the oscillator level is held fixed at a low level. If this circuit is not used, connect pin 4 to ground through a 10kΩ external resistor. Providing this external resistor stops the 500kHz oscillator and allows the converter to be used as an amplifier. • When this circuit is used with an intercarrier, the buzz characteristics can be improved by changing the value of the resistor connected between pin 4and ground to 100kΩ. ILA06713 500kHz 68Ω 4 400Ω 4(R) ILA06691 5 VCC • Use the shortest distance possible when decoupling VCC and ground. Continued on next page. No.7779-15/21 LA7567EV Continued from preceding page. Pin No. Pin Description Equivalent circuit • Equalizer circuit. This circuit is used to correct the video signal frequency characteristics. Pin 8 is the EQ amplifier input. This amplifier amplifies a 1.5Vp-p video signal to 2Vp-p. • Notes on equalizer amplifier design The equalizer amplifier is designed as a voltage follower amplifier with a gain of about 2.3dB. When used for frequency characteristics correction, a capacitor, inductor, and resistor must be connected in series between pin 7 and ground. • Approach used in the equalizer amplifier If vi is the input signal and vo is the output signal, then: 6 7 8 EQ amp R1 —— +1 (vi + vin) = Vo × G 2 Where G is the voltage-follower amplifier gain. Assume: vin: Imaginary short G: About 2.3dB vin ≈ 0. Then: voG R1 AV = —— = —— +1 vi Z • R1 is the IC internal resistance, and is 1kΩ. In the application design, simply select Z to correspond to the desired characteristics. However, since the EQ amplifier gain will be maximum at the resonant point defined by Z, care is required to assure that distortion does not occur. 2kΩ 1kΩ EQ OUTPUT 6 9.2kΩ 7 C L =Z R ILA06692 EQ INPUT 200Ω 8 AGC ILA06693 FROM APC DET 9 APC FILTER • PLL detector APC filter connection. The APC time constant is switched internally in the IC. When locked, the VCO is controlled by loop A and the loop gain is reduced. When unlocked and during weak field reception, the VCO is controlled by loop B and the loop gain is increased. For this APC filter we recommend: R = 150 to 390Ω C = 0.47µF A 1kΩ 1kΩ 1kΩ B 9 R + C ILA06694 Continued on next page. No.7779-16/21 LA7567EV Continued from preceding page. Pin No. Pin Description Equivalent circuit 2kΩ 10 Composite video output • Output for the video signal that includes the SIF carrier. A resistor must be inserted between pin 10 and ground to acquire adequate drive capability. R ≥ 300Ω 15pF 10 2pF ILA06695 11 12 11 12 VCO tank • VCO tank circuit used for video signal detection. See the coil specifications provided separately for details on the tank circuit. This VCO is a vector synthesis VCO. ILA06696 13 AFT OUTPUT • AFT output. The AFT center voltage is generated by an external bleeder resistor. The AFT gain is increased by increasing the resistance of this external bleeder resistor. However, this resistor must not exceed 390kΩ. This circuit includes a control function that controls the AFT voltage to naturally approach the center voltage during weak field reception. 13 ILA06697 9V 14 RF AGC OUTPUT • RF AGC output. This output controls the tuner RF AGC. A protective 100Ω resistor is inserted in series with the open collector output. Determine the external bleeder resistor value in accordance with the specifications of the tuner. to tuner 14 100Ω ILA06698 15 1st SIF INPUT • First SIF input. A DC cut capacitor must be used in the input circuit. • If a SAW filter is used: The first SIF sensitivity can be increased by inserting an inductor between the SAW filter and the IC to neutralize the SAW filter output capacitance and the IC input capacitance. • When used in an intercarrier system: This pin (pin 15) may be left open. 2kΩ 2kΩ 15 ILA06699 Continued on next page. No.7779-17/21 LA7567EV Continued from preceding page. Pin No. Pin Description Equivalent circuit 16 1st SIF AGC FILTER • First SIF AGC filter connection. This IC adopts an average value AGC technique. The first SIF conversion gain is about 30dB, and the AGC range is over 50dB. A 0.01µF capacitor is normally used in filter connected to this pin. • When used in an intercarrier system: Connect this pin (pin 16) to ground. The IC internal switch will operate to connect the intercarrier output to the SIF converter input. 1kΩ 1kΩ INTER / SPLIT SW LO=INTER 16 ILA06700 17 IF AGC FILTER • IF AGC filter connection The signal peak-detected by the built-in AGC detector is converted to the AGC voltage at pin 17. Additionally, a second AGC filter (a lag-lead filter) used to create the dual time constants is provided internally in the IC. Use a 0.022µF capacitor as the external capacitor, and adjust the value according to the sag, AGC speed, and other characteristics. 17 1kΩ ILA06701 18 18 19 VIF input • VIF amplifier input. The input circuit is a balanced circuit, and the input circuit constants are: R ≈ 1.5kΩ C ≈ 3pF 19 ILA06702 20 GND Continued on next page. No.7779-18/21 LA7567EV Continued from preceding page. Pin No. Pin Description Equivalent circuit 4.2V 21 RF AGC VR 20kΩ 560Ω 21 ILA06703 • RF AGC VR connection. This pin sets the tuner RF AGC operating point. Also, the FM output and the video output can both be muted at the same time by connecting this pin to ground. • First SIF output. Internally, this is an emitter-follower output with a 600Ω resistor attached. When used in an intercarrier system, the buzz characteristics can be improved by forming a chrominance carrier trap with this pin. 22 NICAM output 22 20kΩ 20kΩ 20kΩ 620Ω Forms a chrominance killer trap. 22 ILA06704 23 FM filter • Connection for a filter used to hold the FM detector output DC voltage fixed. Normally, a 1µF electrolytic capacitor should be used. The capacitance should be increased if the low band (around 50Hz) frequency characteristics need to be improved. The FM detector output level can be reduced and the FM dynamic range can be increased by inserting a resistor and a capacitor in series between pin 23 and ground. 1kΩ 1kΩ 23 R + 6kΩ C ILA06706 24 FM Detector output • Audio FM detector output. A 300Ω resister is inserted in series with an emitter-follower output. • For applications that support stereo: Applications that input this signal to a stereo decoder may find that the input impedance is reduced, the left and right signals are distorted, and that the stereo characteristics are degraded. If this problem occurs, add a resistor between pin 24 and ground. R1 ≥ 5.1kΩ • For applications that support mono: Create an external deemphasis circuit. t = C × R2 R2 24 C R1 300Ω 10kΩ ILA06707 No.7779-19/21 LA7567EV Notes on Sanyo SAW Filters There are two types of SAW filters, which differ in the piezoelectric substrate material, as follows: • Lithium tantalate (LiTaO3) SAW filter TSF11I I ... Japan TSF12I I ... US Although lithium tantalate SAW filters have the low temperature coefficient of –18ppm/°C, they suffer from a large insertion loss. However, it is possible, at the cost of increasing the number of external components required, to minimize this insertion loss by using a matching circuit consisting of coils and other components at the SAW filter output. At the same time as minimizing insertion loss, this technique also allows the frequency characteristics, level, and other aspects to be varied, and thus provides increased circuit design flexibility. Also, since the SAW filter reflected wave level is minimal, the circuit can be designed with a small in-band ripple level. • Lithium niobate (LiNbO3) SAW filter TSF52I I ... US TSF53I I ... PAL Although lithium niobate SAW filters have the high temperature coefficient of –72ppm/°C, they feature an insertion loss about 10dB lower than that of lithium tantalate SAW filters. Accordingly, there is no need for a matching circuit at the SAW filter output. Although the in-band ripple is somewhat larger than with lithium tantalate SAW filters, since they have a low impedance and a small field slew, they are relatively immune to influences from peripheral circuit components and the geometry of the printed circuit board pattern. This allows stable out-of-band trap characteristics to be acquired. Due to the above considerations, lithium tantalate SAW filters are used in applications for the US and Japan that have a high IF frequency, and lithium niobate SAW filters are used in PAL and US applications that have a low IF frequency. Notes on SAW Filter Matching In SAW filter input circuit matching, rather than matching the IF frequency, flatter video band characteristics can be acquired by designing the tuning point to be in the vicinity of the audio carrier rather than near the chrominance carrier. The situation shown in figure on the right makes it easier to acquire flat band characteristics than that in figure on the left. SAW filter characteristics The high band is reduced The high band is extended Frequency Frequency ILA06708 With the Tuning Set to the IF frequency Coil Specifications JAPAN f = 58.75MHz S t=5t 0.12ø C=24pF S With the Tuning Set to the Vicinity of S and C US f = 45.75MHz t=6t 0.12ø C=24pF S PAL f = 38.9MHz t=7t 0.12ø C=24pF VCO coil ILA06709 ILA06710 ILA06711 Test production no. V291XCS-3220Z Toko Co., Ltd. SAW filter (SPLIT) SAW filter (INTER) Toko Co., Ltd. 2-1-17 Higashi-yukigaya, Ohta-ku, Tokyo, Japan TEL: +81-3-3727-1167 Picture TSF1137U Sound Test production no. 291XCS-3188Z Toko Co., Ltd. Picture TSF1241 Sound TSF5220 TSF5221 Test production no. 292GCS-7538Z Toko Co., Ltd. Picture TSF5315 Sound TSF5321 TSF5344 No.7779-20/21 LA7567EV Notes on VCO Tank Circuits • Built-in capacitor VCO tank circuits When the power is turned on, the heat generated by the IC is transmitted through the printed circuit board to the VCO tank circuit. At this point, the VCO coil frame functions as a heat sink and the IC heat is dissipated. As a result, it becomes more difficult to transmit heat to the VCO tank circuit's built-in capacitor, and the influence of drift at power on is reduced. Therefore, it suffices to design the circuit so that the coil and capacitor thermal characteristics cancel. Ideally, it is better to use a coil with a core material that has low temperature coefficient characteristics. • External capacitor VCO tank circuits When an external capacitor is used, heat generated by the IC is transmitted through the printed circuit board directly to the VCO tank circuit external capacitor. While this capacitor is heated relatively early after the power is turned on, the coil is not so influenced as much by this heat, and as a result the power-on drift is increased. Accordingly, a coil whose core material has low temperature coefficient characteristics must be used. It is also desirable to use a capacitor with similarly low temperature coefficient characteristics. Note: Applications that use an external capacitor here must use a chip capacitor. If an ordinary capacitor is used, problems such as the oscillator frequency changing with the capacitor orientation may occur. Specifications of any and all SANYO products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the performance, characteristics, and functions of the described products as mounted in the customer's products or equipment. To verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer's products or equipment. SANYO Electric Co., Ltd. strives to supply high-quality high-reliability products. However, any and all semiconductor products fail with some probability. It is possible that these probabilistic failures could give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire, or that could cause damage to other property. When designing equipment, adopt safety measures so that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective circuits and error prevention circuits for safe design, redundant design, and structural design. In the event that any or all SANYO products(including technical data,services) described or contained herein are controlled under any of applicable local export control laws and regulations, such products must not be expor ted without obtaining the expor t license from the authorities concerned in accordance with the above law. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, or any information storage or retrieval system, or otherwise, without the prior written permission of SANYO Electric Co., Ltd. Any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification" for the SANYO product that you intend to use. Information (including circuit diagrams and circuit parameters) herein is for example only ; it is not guaranteed for volume production. SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties. This catalog provides information as of August, 2005. Specifications and information herein are subject to change without notice. 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