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AN728 Datasheet PDF


Part Number AN728
Manufacturer Vishay Siliconix
Title Designing A Flyback Converter
Description AN728 Vishay Siliconix Designing A Flyback Converter with Si9113 for Feeding the TE from U-Interface In ISDN Nitin Kalje and Tony Lai INTRODUCTI...
Features include: D programmable start/stop D less than 5-mA supply current in UVLO mode D internal start-up circuit, programmable soft-start, and power_good output. The following sections discuss in detail design considerations for creating an efficient 800-mW flyback converter with the Si9113. Refer to the...

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AN7208 : Pin No. 1 2 3 4 5 6 7 8 9 10 Description FM RF input TV RF input GND 1 N.C. IF out 1 Mode SW IF in IF gain control IF out 2 GND 2 Pin No. 11 12 13 14 15 16 17 18 19 20 VCC2 STDBY TV OSC 1 TV OSC 2 OSC buff. FM OSC 1 FM OSC 2 TV RF FM RF VCC1 ICs for FM/AM Tuner Description s Absolute Maximum Ratings Parameter Supply voltage Supply current Power dissipation Operating ambient temperature Storage temperature *1 *1 Symbol VCC ICC PD Topr Tstg Rating 2.5 12 30 −20 to +75 −55 to +125 Unit V mA mW °C °C Note) *1 : All items are at Ta = 25°C, except for the operating ambient temperature and storage temperature. s Recommended Operating Range Parameter Supply voltage Symbol VCC Range 1.0 to 2.

AN7208SA : Pin No. 1 2 3 4 5 6 7 8 9 10 Description FM RF input TV RF input GND 1 N.C. IF out 1 Mode SW IF in IF gain control IF out 2 GND 2 Pin No. 11 12 13 14 15 16 17 18 19 20 VCC2 STDBY TV OSC 1 TV OSC 2 OSC buff. FM OSC 1 FM OSC 2 TV RF FM RF VCC1 ICs for FM/AM Tuner Description s Absolute Maximum Ratings Parameter Supply voltage Supply current Power dissipation Operating ambient temperature Storage temperature *1 *1 Symbol VCC ICC PD Topr Tstg Rating 2.5 12 30 −20 to +75 −55 to +125 Unit V mA mW °C °C Note) *1 : All items are at Ta = 25°C, except for the operating ambient temperature and storage temperature. s Recommended Operating Range Parameter Supply voltage Symbol VCC Range 1.0 to 2.

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AN7233SH : Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Pin Name AM RF Amp. Input AM Mixer Output Supply Pin for IF Input Portion/AMOSC Section AM AGC AM IF Amp. Input FM IF Amp. Input SD LED ON Level Adjustment Stereo LED Drive/AMIF Output Pin SD LED Drive Pin Supply Pin Phase-Shifter Pin for FM Detection GND Pin Output for FM/AM IF Count IF Count Control Pin Pin No. 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Pin Name AM Detection Pin AM AF Amp. Input Pin Oscillation Prevention Capacitor Pin FM/AM Detection Output Pin MPX Input Pin Rch Output Pin Lch Output Pin AM/FM Changeover/19kHz Output Pin Loop Filter Pin 1 for PLL Loop Filter Pin 2 for PLL CR Connecting Pin for VCO Low Pass Filter Pin 1 for Pilot De.

AN7243 : Pin No. 1 Pin Name Oscillation Emitter Typ. Waveform Description Oscillation transistor's emitter pin 108.7MHz ICs for FM/AM Tuner Equivalent Circuit 2 1 2 Oscillation Base 108.7MHz Oscillation transistor's base pin 3 VCC DC 8V Main circuit VCC VCC 4 OSC Output 108.7MHz Output oscillation signal to microcomputer through buffer. 4 6.6V ≅70µA 5 AGC Output ≅ 0V Output AGC signal according to Mix. output dimensions. 5 6 AGC-Amp. Gain Adjustment DC 0.8V Adjust AGC-Amp. gain by external resistance. (Refer to P.275 AGC circuit.) 6 7 IF Amp. Output 10.7MHz IF signal (10.7MHz) output pin Zout ≅ 330Ω + – 7 8 IF Amp. By-pass DC 3.2V IF amp. by-pass control 330Ω 9 8 .

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