Ordering number : EN5635 Monolithic Linear IC LA7688 Single-Chip CTV Signal-Processing Circuit for PAL and NTSC Formats Overview The LA7688 integrates VIF, SIF, video, chrominance, and deflection processing circuits for PAL/NTSC format TV sets on a single chip and is provided in a 52-pin shrink package. The VIF and SIF circuits achieve semi-adjustment-free operation, and are adjustment-free except for the VCO coil and the RF AGC circuit. The chrominance circuit can be made adjustment-free by using the LC89950 1H delay line IC. All the signal processing required for a multi-format color TV can be implemented by combining this product with the LA7642 SECAM decoder IC. [OSD] [DEF] • Analog OSD • Automatic 50/60 Hz discrimination • Fixed vertical size • Double AFC • Built-in sync separator circuit [Other features] • Sandcastle pulse (for the 1H delay line) • fsc output (for SECAM systems) • Primary color output Package Dimensions unit: mm 3218-DIP52S [LA7688] Features [VIF] [SIF] [VIDEO] • PLL detector • Buzz canceller • PLL detector • Audio switch • Built-in trap • Built-in DL • Aperture control • Video switch (SVO output) • Black expansion • PAL/NT • Base band processing (adjustment free) • Built-in bandpass filter [CHROMA] SANYO: DIP52S Specifications Maximum Ratings at Ta = 25°C Parameter Maximum supply voltage Symbol Conditions Ratings Unit V40 max 9 V45 max 9 V I24 max 16 mA Maximum supply current FBP input current V I26 max 5 mA I32 max 10 mA FBP input voltage I26 min Allowable power dissipation Pd max Ta ≤ 65°C When mounted on a printed circuit board* –5 V 1.3 W Operating temperature Topr –10 to +65 °C Storage temperature Tstg –55 to +150 °C Ratings Unit Note : * Printed circuit board size: 83 × 86 × 1.5 mm, material: Bakelite Operating Conditions at Ta = 25°C Parameter Recommended supply voltage Recommended supply current Operating voltage range Operating current range Symbol Conditions V40 7.6 V45 7.6 V I24 12 mA V V40 op 7 to 8.2 V45 op 7 to 8.2 V I24 op 10 to 16 mA V SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN 82097HA(OT) No. 5635-1/6 LA7688 Operating Characteristics at Ta = 25°C, VCC40, 45 = 7.8 V, I24 = 12 mA Parameter Symbol Conditions Ratings min typ Unit max [Circuit Voltages and Currents] Horizontal power-supply voltage VCCH 6.4 6.9 7.4 V I40 78 90 100 mA I45 34 40 48 mA RF AGC maximum voltage V50H 7.5 RF AGC minimum voltage V50L Current drain Deflection system (V24) [VIF Block] Input sensitivity AGC range Vi 7.8 7.8 V 0.2 0.6 V 39 45 dBµ GR 56 60 dB VIN max 95 100 dBµ Quiescent video output voltage V8 4.1 4.4 4.7 Synchronizing signal tip voltage V8tip 1.7 2.0 2.3 V VO 1.7 2.0 2.3 Vp-p V Maximum allowable input Video output amplitude V Black noise threshold voltage VBTH 1.0 1.3 1.7 Black noise clamp voltage VBCL 2.7 3.0 3.3 Output signal-to-noise ratio S/N 48 52 1.07 MHz beat level C/S 40 44 dB fC 6 9 MHz Frequency characteristics V dB Differential gain DG 5 10 % Differential phase DP 6 10 deg Quiescent AFT voltage V7 3.6 3.9 4.2 V Maximum AFT voltage V7H 7.3 7.6 7.8 V Minimum AFT voltage V7L 0 0.3 0.7 V AFT detection sensitivity Sf 10 15 20 mV/kHz VIF input resistance Ri f = 38.9 MHz 1.0 1.3 1.6 kΩ VIF input capacitance Ci f = 38.9 MHz 2 3 5 APC pull-in range (U) fPU 0.8 2.0 0.8 2.0 APC pull-in range (L) VCO1 maximum variation range SIF signal level VCO1 control sensitivity fPL –2 ∆fU1 ∆fL1 pF MHz –0.8 MHz MHz –2.0 –0.8 MHz SOUT 110 140 170 mVrms ß 2.4 4.8 9.6 kHz [SIF Block] SIF limiting sensitivity Vi (lim) 40 46 52 dBµ VO (FM) 390 500 710 mVrms AMR AMR 40 Total harmonic distortion THD FM detector output voltage SIF S/N S/N (SIF) FM detector range (L) WFML FM detector range (H) WFMH FM detector output variability 60 0.3 55 dB 1.0 62 2.5 % dB 4.0 MHz 7.0 8.0 MHz ∆VO 0 2.0 3.0 dB GAF –0.7 –0.2 +0.3 dB 0.03 0.5 % 0 1.2 V V [INT/EXT Switching Block] AFT EXT gain AFT EXT distortion THD AF System switch I-SE V1TH1 Notes: System switch I-P/N V1TH2 I = INT, E = EXT 1.7 2.6 System switch E-P/N V1TH3 P/N = PAL/NTSC 2.9 3.8 V System switch E-SE V1TH4 SE = SECAM 4.1 5 V [Video Switching Block] Video signal input 1 DC voltage V10DC Video signal input 1 AC voltage V10AC Video signal input 2 DC voltage V14DC Video signal input 2 AC voltage V14AC SVO pin DC voltage V16DC 2.5 2.8 3.1 V SVO pin AC voltage V16AC 1.7 2.0 2.3 Vp-p 3.2 3.5 3.8 1.0 3.2 3.5 V Vp-p 3.8 1.0 V Vp-p Continued on next page. No. 5635-2/6 LA7688 Continued from preceding page. Parameter Symbol Conditions Ratings min typ Unit max [Filter Block] Filter automatic adjustment open voltage S input threshold C-TRAP V9OPN 3.3 3.8 4.3 V9TH fSC = 4.43 MHz 1.5 2.0 2.5 V V GTRAP –20 –26 –32 dB C-BPF1 GBPF1 –5 –3 –1 dB C-BPF2 GBPF2 –2 –1 0 dB C-BPF3 GBPF3 –6 –4 –2 dB Y-DL TIME1 Tdy1 PAL 400 450 500 ns Y-DL TIME2 Tdy2 NTSC 410 460 510 ns Y-DL TIME3 Tdy3 S (PAL) 230 280 330 ns Y-DL TIME4 Tdy4 SECAM 510 560 610 ns ECCEN 1.0 1.2 1.4 Vp-p dGC 18 22 26 dB Brightness minimum (0.5 V) VB min 0.4 0.7 1.0 V Brightness typical (2.5 V) VB typ 1.9 2.2 2.5 V Brightness maximum (4.5 V) VB max 3.4 3.7 4.0 V dGSOFT –6.0 –4.0 –2.0 dB dGSHARP 4.5 7.5 10.5 dB [Video Block] Contrast center Contrast variation range Soft control characteristics Sharp control characteristics Y signal frequency characteristics (1) BW1 S-VHS 3.9 4.4 4.9 MHz Y signal frequency characteristics (2) BW2 PAL 3.0 3.35 3.7 MHz BW3 NTSC 2.5 2.85 3.2 MHz Y signal frequency characteristics (3) DC transmission ratio Black expansion threshold Black expansion maximum gain dVAPL 100 % BSTH 40 50 60 IRE BSmax –20 –13 –6 IRE [Chrominance Common] R-Y output DC voltage V39DC 3.6 4.0 4.4 V R-Y output AC voltage E39AC 0.45 0.60 0.75 Vp-p B-Y output DC voltage V38DC 3.6 4.0 4.4 V B-Y output AC voltage E38AC 0.35 0.5 0.65 Vp-p R-Y input DC voltage V37DC 4.2 4.6 5.0 V R-Y input AC voltage E37AC 0.45 0.60 0.75 Vp-p mVp-p R-Y input AC range E37ALC 160 200 250 B-Y input DC voltage V36DC 4.2 4.6 5.0 V B-Y input AC voltage E36AC 0.35 0.5 0.65 Vp-p 160 200 B-Y input AC range E36ALC Residual color ECMIN Contrast color amplitude characteristics dGCC RGB output DC difference voltage dVC With no chrominance signal input ∂VC/∂T With no chrominance signal input RGB output DC voltage temperature characteristics RGB output residual high-frequency level E car RGB output residual carrier level e car fSC output pin DC voltage V27OPN fSC output level P V27ACP fSC output level N V27ACN DEF COIN-L V27LO Crystal switching threshold V27TH PAL switching threshold V18PTH NT switching threshold V18NTH 250 mVp-p 200 mVp-p 30 35 40 dB –0.3 0 +0.3 V 0 With no chrominance signal input mV/°C 0.2 Vp-p 0.3 Vp-p 4.5 5.0 5.3 V PAL 0.14 0.2 0.26 Vp-p NTSC 0.19 0.26 0.33 Vp-p 1.0 1.3 1.6 400 0.6 0.9 V µA V V Continued from preceding page. No. 5635-3/6 LA7688 Continued from preceding page. Parameter Symbol Conditions Ratings min typ Unit max [Chrominance System PAL Block] ACC amplitude characteristics 1 ACC1p –2 +1 +4 dB ACC amplitude characteristics 2 ACC2p –4 0 +2 dB Killer operating point E KILp –37 –30 –25 dB Killer hysteresis dE KILp 1 3 7 RGB output level E Bp 4.1 4.6 5.1 Vp-p 5.4 5.9 6.4 Vp-p Maximum RGB output EBmaxp APC pull-in range + df scp+ APC pull-in range – df scp– Chrominance: 50%, color: typical Chrominance: 50%, color: maximum 500 dB Hz –500 Hz Demodulated output ratio B/R B/Rp 1.50 1.78 2.00 double Demodulated output ratio G/R G/Rp With no B-Y signal –0.56 –0.51 –0.46 double Demodulated output ratio G/B G/Bp With no R-Y signal –0.21 –0.91 –0.17 double Demodulation angle RBp 85 90 95 deg ACC amplitude characteristics 1 ACC1n –2 +1 +4 dB ACC amplitude characteristics 2 ACC2n –4 0 +2 dB ACC phase characteristics 1 PCC1n –3 0 +3 deg [Chrominance System NTSC Block] ACC phase characteristics 2 PCC2n –5 0 +5 deg Killer operating point E KILn –40 –34 –29 dB Killer hysteresis dE KILn 1 4 8 RGB output level E Bn 3.4 3.9 4.4 Vp-p 5.0 5.5 6.0 Vp-p Maximum RGB output EBmaxn APC pull-in range + df scn+ APC pull-in range – df scn– Chrominance: 50%, color: typical Chrominance: 50%, color: maximum 350 dB Hz –350 Hz Tint control variation range dP TI –33 +50 deg Demodulated output ratio R R/Bn 0.81 0.90 0.99 double Demodulated output ratio G G/Bn 0.24 0.30 0.36 double Demodulation angle RB RBn 95 105 115 deg Demodulation angle GB GBn –130 –120 –110 deg [RGB Block] OSD input level E OSD Standard input, 100% white level OSD input DC voltage V OSD With no signal F-BLK input threshold level OSD output pedestal level difference 0.7 Vp-p 2.9 3.2 3.5 V28TH 0.8 1.0 1.2 V V V OSDC –0.3 0 +0.3 Vp-p OSD output maximum E OSDmax 4.3 4.8 5.3 Vp-p OSD output minimum E OSDmin 0.3 0.6 0.9 Vp-p BW OSD 5 7 TV-OSD crosstalk (C-Y) CT TVC 50 dB OSD-TV crosstalk (C-Y) CT OSDC 40 dB Character signal inter-character crosstalk CT OSD 30 dB Character signal output frequency characteristics MHz [DEF Block] Vertical free-running period 50 TVFREE50 312.0 312.5 313.0 H Vertical free-running period 60 TVFREE60 262.0 262.5 263.0 H Vertical synchronization maximum period 50 TVmax50 Horizontal synchronizing signal only 356.5 357.0 357.5 H Vertical synchronization maximum period 60 TVmax60 Horizontal synchronizing signal only 296.5 297.0 297.5 H Vertical synchronization minimum period 50 TVmin50 268.5 269.0 269.5 H Vertical synchronization minimum period 60 TVmin60 224.5 225.0 225.5 H 0.6 1.0 V 23 23.5 24 H Vertical blanking peak value VHVBL Vertical blanking pulse width 50 PWBLK50 Vertical blanking pulse width 60 PWBLK60 19 19.5 20 H Vertical output pulse width PWVOUT 8.0 8.5 9.0 H Vertical output voltage H VOUTH 5.3 5.6 5.9 V Vertical output voltage M VOUTM 4.0 4.3 4.6 V Vertical output voltage L VOUTL 0.3 V Continued on next page. No. 5635-4/6 LA7688 Continued from preceding page. Parameter Symbol Conditions Ratings min typ Vertical external trigger load resistance RTR Vertical automatic synchronization stop voltage VSAS 1.4 1.9 Horizontal AFC gate release voltage VGS 2.0 2.5 V Vertical output start VCC voltage SVV 4.2 4.7 V Horizontal free-running deviation ∆fH 0 +150 Hz Horizontal free-running frequency VCC dependence 3.0 Unit max –150 ∆fH/VCC Horizontal pull-in range fHPLL Horizontal output start VCC voltage SHV AFC2 FBP peak value H FBPH AFC2 FBP peak value M AFC2 FBP peak value L 4.7 kΩ 2 V Hz ±450 Hz 4.8 5.2 V 6.0 6.5 7.0 V FBPM 3.2 3.7 4.2 V FBPL –0.3 +0.2 +0.7 V Horizontal output pulse width PWHOUT 21.8 23.8 25.8 µs Horizontal output phase maximum HPmax 14 17 Horizontal output phase center HPcen 4.8 5.8 6.8 Horizontal output phase minimum HPmin 3.8 4.8 µs Burst gate pulse width PWBGP 3 4 5 µs Burst gate pulse phase TdBGP –0.2 +0.3 +0.8 µs 1.1 1.5 V 50/60 Hz output voltage 50 V50 50/60 Hz output voltage 60 V60 3.8 50/60 Hz input voltage 50 VIN50 0.5 µs 4.1 µs V V 50/60 Hz input voltage 60 VIN60 7.0 V SECAM V pulse peak value SVH 1.8 2.2 2.6 V SECAM V pulse width SVW 11.0 11.5 12.0 H No. 5635-5/6 LA7688 LC4528 Test Circuit ■ No products described or contained herein are intended for use in surgical implants, life-support systems, aerospace equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like, the failure of which may directly or indirectly cause injury, death or property loss. ■ Anyone purchasing any products described or contained herein for an above-mentioned use shall: ➀ Accept full responsibility and indemnify and defend SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors and all their officers and employees, jointly and severally, against any and all claims and litigation and all damages, cost and expenses associated with such use: ➁ Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of their officers and employees jointly or severally. ■ 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, 1997. Specifications and information herein are subject to change without notice. No. 5635-6/6