Ordering number : N5288A Monolithic Linear IC LA7337 SECAM-Format VCR Chroma Signal-Processing Circuit Overview Package Dimensions The LA7337 is an IC that implements SECAM-format VCR signal processing in a single chip. It incorporates band-pass filters and a SECAM discrimination circuit on chip and features automatic adjustment of the bell filter for a reduced number of external components and adjustmentfree circuit operation. unit: mm 3063-DIP28S [LA7337] Features • All required filters, except for the bell filter, incorporated on chip. • Automatic adjustment of the bell filter f0 parameter • Built-in SECAM discrimination circuit Functions •4.3-MHz and 1.1-MHz band-pass filters, limiter, AGC (in playback mode) • Divide-by-four circuit, 4× frequency multiplier circuit, 2.2-MHz band-pass filter • Bell filter f 0 automatic adjustment circuit, SECAM discrimination circuit • Sync gate SANYO: DIP28S Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Maximum supply voltage Symbol Conditions Ratings VCC max Allowable power dissipation Pd max Unit 7 Ta ≤ 70°C 600 V mW Operating temperature Topr –15 to +70 °C Storage temperature Tstg –40 to +150 °C Ratings Unit Operating Conditions at Ta = 25°C Parameter Symbol Recommended supply voltage VCC Operating supply voltage range VCC op Conditions 5 V 4.8 to 5.5 V SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN 13097 HA (OT) No. 5288-1/7 LA7337 Operating Characteristics at Ta = 25°C, VCC = 5 V Parameter Symbol Conditions Record mode current drain ICCR V5 = V6 = 0 V, V16 = 0 V, S27 = composite sync., S15 = color bar signal 4.3-MHz band-pass filter characteristics (1) VF4C V6 = 5 V, V16 = 0 V, S27 = composite sync. S15 = sine wave (200 mVp-p, f = 4.286 MHz) 4.3-MHz band-pass filter characteristics (2) GF4L1 4.3-MHz band-pass filter characteristics (3) Ratings min typ Unit max 50 70 90 mA 145 180 215 mVp-p As above, except S15 = sine wave (200 mVp-p, f = 1.1 MHz), taking VF4C as the reference (0 dB) –30 –20 dB GF4L2 As above, except S15 = sine wave (200 mVp-p, f = 2.2 MHz), taking VF4C as the reference (0 dB) –10 –5 dB 4.3-MHz band-pass filter characteristics (4) GF4H As above, except S15 = sine wave (200 mVp-p, f = 7.5 MHz), taking VF4C as the reference (0 dB) –30 –20 dB Record mode bell filter center frequency (1) FBLR1 V5 = V6 = 0 V, V16 = 0 V, SW21B = on, S15 = sine wave (200 mVp-p, f = 4 to 5 MHz), S27 = composite sync. 4.243 4.286 4.329 MHz Record mode bell filter center frequency (2) FBLR2 As above, except V5 = 4 V. 4.493 4.536 4.579 MHz Record mode bell filter characteristics (1) VBLRC V5 = V6 = 0 V, V16 = 0 V, SW21B = on, S15 = sine wave (200 mVp-p, f = FBLR1), S27 = composite sync. 200 250 300 mVp-p Record mode bell filter characteristics (2) GBLRL As above, except S15 = sine wave (200 mVp-p, f = 3.8 MHz), taking VBLRC as the reference (0 dB) –14 –11 –8 dB Record mode bell filter characteristics (3) GBLRH As above, except S15 = sine wave (200 mVp-p, f = 4.8 MHz), taking VBLRC as the reference (0 dB) –14 –11 –8 dB –28 –23 –18 dB Record mode killer operating level GKLR V5 = V6 = 0 V, S15 = a SECAM color bar signal (variable level), V16 = 0 V, SW21B = on, V23 = 3.4 V, V24 = 3.7 V, S27 = composite sync. Record equalization center frequency (1) FEQR1 SW1 = on, V1 = 5 V, V5 = V6 = 0 V, V16 = 0 V, S21 = sine wave (200 mVp-p, f = 4 to 5 MHz), SW21A = SW21B = on, S27 = composite sync. 1.0608 1.0715 1.0822 MHz Record equalization center frequency (2) FEQR2 As above, except V6 = 4 V 1.0788 1.0895 1.1002 MHz Record equalization characteristics (1) VEQRC SW1 = on, V1 = 5 V, V5 = V6 = 0 V, V16 = 0 V, S21 = sine wave (200 mVp-p, f = FEQR1 × 4), SW21A = SW21B = on, S27 = composite sync. 65 85 105 Record equalization characteristics (2) GEQRL As above, except S21 = sine wave (200 mVp-p, f = 3.8 MHz), taking VEQRC as the reference (0 dB) 8 11 14 dB Record equalization characteristics (3) GEQRH As above, except S21 = sine wave (200 mVp-p, f = 4.8 MHz), taking VEQRC as the reference (0 dB) 8 11 14 dB Record chrominance signal output level VOR SW1 = on, V1 = 5 V, V5 = V6 = 0 V, V16 = 0 V, S15 = sine wave (200 mVp-p, f = 4.4 MHz), SW21B = on, S27 = composite sync. 80 110 140 mVp-p Record chrominance signal output unnecessary spectrum (1) GSR1 As above, except measure the 2.2 MHz component in the T11 signal. Taking VOR as the reference (0 dB). –30 –20 dB Record chrominance signal output unnecessary spectrum (2) GSR2 As above, except measure the 3.3 MHz component in the T11 signal. Taking VOR as the reference (0 dB). –30 –20 dB Playback mode current drain ICCP V5 = V6 = 0 V, V16 = 5 V, S27 = composite sync., S13 = sine wave (50 mVp-p, f = 1.0715 MHz) 60 80 100 mA AGC control characteristics (1) VAGC V6 = 5 V, SW8B = on, V16 = 5 V, S27 = composite sync., S13 = sine wave (50 mVp-p, f = 1.0715 MHz) 90 120 150 mVp-p AGC control characteristics (2) GAGC1 As above, except S13 = sine wave (100 mVp-p, f = 1.0715 MHz) Taking VAGC as the reference (0 dB). –1 0 +1 dB AGC control characteristics (3) GAGC2 As above, except S13 = sine wave (25 mVp-p, f = 1.0715 MHz) Taking VAGC as the reference (0 dB). –1 0 +1 dB V6 = 5 V, SW14 = on, V14 = V14R, S13 = sine wave (50 mVp-p, f = 500 kHz), V16 = 5 V, S27 = composite sync., taking VAGC as the reference (0 dB). –3 0 +3 dB mVp-p 1.1-MHz band-pass filter characteristics (1) GF1L 1.1-MHz band-pass filter characteristics (2) GF1H1 As above, except S13 = sine wave (50 mVp-p, f = 2.2 MHz) Taking VAGC as the reference (0 dB). –30 –20 dB 1.1-MHz band-pass filter characteristics (3) GF1H2 As above, except S13 = sine wave (50 mVp-p, f = 3.3 MHz) Taking VAGC as the reference (0 dB). –35 –25 dB Continued on next page. No. 5288-2/7 LA7337 Continued from preceding page. Parameter Symbol Conditions Ratings min typ max Unit Playback equalization center frequency (1) FEQP1 V6 = 0 V, SW8B = on, SW14 = on, V14 = V14R, S13 = sine wave (50 mVp-p, f = 1 to 1.2 MHz), V16 = 5 V, S27 = composite sync. 1.0608 1.0715 1.0822 MHz Playback equalization center frequency (2) FEQP2 As above, except V6 = 4 V 1.0788 1.0895 1.1002 MHz Playback equalization characteristics (1) VEQPC V6 = 0 V, SW8B = on, SW14 = on, V14 = V14R, S13 = sine wave (50 mVp-p, f = FEQP1), V16 = 5 V, S27 = composite sync. 120 150 180 mVp-p Playback equalization characteristics (2) GEQPL As above, except S13 = sine wave (50 mVp-p, f = 950 kHz), taking VEQP as the reference (0 dB). –14 –11 –8 dB Playback equalization characteristics (3) GEQPH As above, except S13 = sine wave (50 mVp-p, f = 1.2 MHz), taking VEQP as the reference (0 dB). –14 –11 –8 dB Playback bell center frequency (1) FBLP1 SW1 = on, V1 = 5 V, V5 = V6 = 0 V, SW8A = SW8B = on, V16 = 5 V, S27 = composite sync., S8 = sine wave (200 mVp-p, f = 1 to 1.2 MHz), 4.243 4.286 4.329 MHz Playback bell center frequency (2) FBLP2 As above, except V5 = 4 V 4.493 4.536 4.579 MHz Playback bell characteristics (1) VBLPC SW1 = on, V1 = 5 V, V5 = V6 = 0 V, SW8A = SW8B = on, S8 = sine wave (200 mVp-p, f = FBLP × 1/4), V16 = 5 V, S27 = composite sync. 65 85 105 mVp-p Playback bell characteristics (2) GBLPL As above, except S8 = sine wave (200 mVp-p, f = 950 kHz), taking VBLPC as the reference (0 dB). 8 11 14 dB Playback bell characteristics (3) GBLPH As above, except S8 = sine wave (200 mVp-p, f = 1.2 MHz), taking VBLPC as the reference (0 dB). 8 11 14 dB 130 160 190 mVp-p VOP SW1 = on, V1 = 5 V, V5 = V6 = 0 V, V16 = 5 V, S13 = sine wave (200 mVp-p, f = 1.1 MHz), SW8B = on, S27 = composite sync. Playback chrominance signal output unnecessary spectrum (1) GSP1 As above, except measure the 2.2 MHz component in the T17 signal. Taking VOP as the reference (0 dB). –25 –15 dB Playback chrominance signal output unnecessary spectrum (2) GSP2 As above, except measure the 3.3 MHz component in the T17 signal. Taking VOP as the reference (0 dB). –20 –10 dB CLK input level VCLK f = 4.433619 MHz 100 200 800 mVp-p Synchronizing signal input threshold level VTHS 1.8 2 2.2 V –0.3 +0.2 +0.7 µs µs Playback chrominance signal output level Record mode sync gate start time (muting off) TRGB Record mode sync gate start time (muting on) TRGBM Record mode sync gate release time TRGE Record mode mute setting resistance VTSP2 SW1 = on, V1 = 5 V, V5 = V6 = 0 V, V16 = 0 V, S15 = sine wave (200 mVp-p, f = 4.286 MHz), SW21B = on, S27 = composite sync. As above, except SW2 = on 1.5 2 2.5 As above 4.5 5.0 5.5 µs 10 20 30 kΩ Playback mode sync gate start time TPGB SW1 = on, V5 = V6 = 0 V, SW8B = on, S13 = sine wave (50 mVp-p, f = 1.0715 MHz), V16 = 5 V, S27 = composite sync. 1.5 2 2.5 µs Playback mode sync gate release time TPGE As above 4.5 5.0 5.5 µs BGP start time TBGB V5 = 0 V, V6 = 5 V, SW21B = on, V16 = 0 V, S27 = composite sync. 6.0 6.5 7.0 µs BGP amplitude TBGW As above 2.0 2.5 3.0 µs 7 10 13 kΩ SECAM discriminator output resistance R26 SW25 = on, V25 = 5 V Record mode SECAM discriminator characteristics (1) VSCMR1 V5 = V6 = 0 V, V16 = 0 V, SW21B = on, S27 = composite sync., S15 = SECAM color bar signal Record mode SECAM discriminator characteristics (2) VSCMR2 As above, except S15 = PAL color bar signal 4.5 V 0.5 V Continued on next page. No. 5288-3/7 LA7337 Continued from preceding page. Parameter Symbol Conditions Playback mode phase detector output difference voltage (1) VSCPD1 V5 = V6 = 0 V, SW8B = on, V16 = 5 V, S27 = composite sync., S13 = sine wave (50 mVp-p, f = 1.0625/1.1016 MHz) Playback mode phase detector output difference voltage (2) VSCPD2 As above, except S13 = sine wave (50 mVp-p, f = 627 kHz) Playback mode SECAM discriminator characteristics (1) VSCMP1 V16 = 5 V, SW23 = SW24 = On Playback mode SECAM discriminator characteristics (2) VSCMP2 V16 = 5 V, SW23 = SW24 = On SECAM discriminator comparator threshold voltage VTCOMP SW25 = On Record/playback control threshold voltage VTRP Forced SECAM mode threshold voltage VTHSM V16 = 0 V, SW25 = on, V25 = 3 V, S27 = composite sync., S15 = sine wave (200 mVp-p, f = 4.286 MHz) Forced mute mode threshold voltage VTHMM V16 = 0 V, SW25 = on, V25 = 4 V, S27 = composite sync., S15 = sine wave (200 mVp-p, f = 4.286 MHz) Reference voltage VREG Ratings min typ 150 Unit max 180 mV 100 4.5 mV V 0.5 V 3.2 3.5 3.8 V 2.3 2.5 2.7 V 4 V 1 4.1 V 4.3 4.5 V Standard Input Signal Levels REC-IN (pin 15) The 200 mVp-p ID component PB-IN (pin 13) 50 mVp-p Internal filter group delay times (reference values) 1.1 MHz BPF 460 ns (PB) 430 ns (REC) 2.2 MHz BPF 180 ns 4.3 MHz BPFA 230 ns 4.3 MHz BPFB 170 ns [Record/playback mode settings] Pin 16 = low → record mode Pin 16 = high → playback mode [Bell filter offset adjustment] Increasing the pin 6 voltage increases the 1.1-MHz bell filter center frequency (f0). Increasing the pin 5 voltage increases the 4.3-MHz bell filter center frequency (f0). [Test mode settings] The IC enters test mode if pin 6 is set to 5 V. The pin 5, 11, 17, and 26 outputs behave as follows in this mode. Pin 5: The 4.43-MHz VCO output appears (However, note that a load of about 1 kΩ is required between this pin and VCC.) Pin 11: The 1.1-MHz band-pass filter output appears. Pin 17: The 4.3-MHz band-pass filter output appears. Pin 26: The BGP (used for SECAM discrimination, playback AGC, and record killer) can be monitored. [Muting control table] Voltage applied to pin 1 Output signal mode (pins 17 and 11) 4 V or higher Forced SECAM Open AUTO (Uses the output of the internal discriminator) 1 V or lower Forced mute mode No. 5288-4/7 LA7337 Block Diagram No. 5288-5/7 LA7337 Test Circuit Diagram Note: Use an FET probe when measuring T8, T21, and BGP. No. 5288-6/7 LA7337 Test Circuit Diagram ■ 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 January, 1997. Specifications and information herein are subject to change without notice. No. 5288-7/7