Sanyo LA7975 free download

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Ordering number: EN3994B Monolithic Linear IC LA7975 PAL SIF Converter Circuit for TV and VCR Multi-system Overview The LA7975 is an IC that converts PAL SIF signals (5.5 MHz, 6 MHz, and 6.5 MHz) to 6 MHz. For the sake of high sound quality, this IC uses a unique mixer technique to supress interference from NICAM signals. Package Dimensions unit : mm 3042C-SIP5 [LA7975] Functions . Mixer, amplifier, oscillator, oscillator mute Features . Resistant to interference by NICAM signals . Small SIP-5 package . Wide range of usage voltage (5 V to 12 V) Specifications Maximum Ratings at Ta = 25°C Parameter Maximum supply voltage Maximum feed current Allowable power dissipation Operating temperature Storage temperature Symbol VCC max I5 max I4 max Pd max Topr Tstg Ta % 70°C Conditions SANYO : SIP5 Ratings 13.2 3 1 200 ­20 to +70 ­40 to +150 Unit V mA mA mW °C °C Operating Conditions at Ta = 25°C Parameter Recommended supply voltage Operating voltage range Symbol VCC VCC op Conditions Ratings 9 5 to 12 Unit V V SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN 73096HA(II)/8282TS No.3994-1/6 LA7975 Operating Characteristics at Ta = 25°C, VCC = 9 V Parameter Current drain Conversion gain 5.5 MHz 6.5 MHz 6.0 MHz Oscillation level Maximum output level Input impedance Pin voltages 500 kHz level difference relative to 6 MHz Maximum input level Oscillation stop current Symbol ICC G5.5 G6.5 G6.0 VOSC VO max Ri V1 V4 V5 OSC leak VIN max I4 Conditions 80 dB/µV input 80 dB/µV input 80 dB/µV input, Pin 4 grounded with 10 k 5.5 MHz 100 dB/µV input 5.5 MHz input Test point Pin 2 Pin 5 Pin 5 Pin 5 Pin 4 Pin 5 Pin 1 Pin 4 Pin 5 Pin 5 Pin 4 min 5 10 10 18.5 15 109 2.6 7.6 7.2 30 90 300 typ 6.5 13.5 13.5 22 36 112 4.8 3 8 7.6 44 max 9 17 17 25.5 80 115 3.4 8.4 8 Unit mA dB dB dB mVp-p dB/µV k V V V dB dB/µV µA Sample Application Circuit Oscillator 500 kHz CSB503E5 Murata Industries, Ltd. 1.5 MHz CSA1.500MK2 Murata Industries, Ltd. 500 kHz EFOA500K04S Matsushita Electric, Ltd. Unit (resistance: , capacitance: F) No.3994-2/6 LA7975 Reference Example 1 Reference Example 2 Unit (resistance: , capacitance: F) No.3994-3/6 LA7975 . Pin 1 is the SIF input pin. The filter in Figure 2 can be connected to the input section to improve the buzz characteristic. Figure 3 shows the characteristics for the filter in Figure 2. If C1 is too small, the buzz characteristic improves for normal input, but the filter cuts into the sound carrier and the buzz characteristic deteriorates for the P/S (picture/sound carrier) ratio. Use C1 6 20 pF to 47 pF. Filter characteristic Figure 1 Unit (resistance: , capacitance: F) Attenuation ­ dB Figure 2 Unit (resistance: , capacitance: F) From video output section Frequency ­ Hz Figure 3 . Pin 4 is the ceramic oscillator pin. To make the oscillation waveform approach a sine wave,the oscillation level is controlled internally. Oscillation levels of