Datenblatt-Suchmaschine für elektronische Bauteile |
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CXA3176N Datenblatt(PDF) 8 Page - Sony Corporation |
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CXA3176N Datenblatt(HTML) 8 Page - Sony Corporation |
8 / 21 page —8— CXA3176N Application Notes 1) Power Supply The CXA3176N, with built-in regulator, is designed to permit stable operation at a wide range of supply voltage of VCC1=1.1 to 4.0 V and VCC2=2.5 to 4.0 V. Decouple the wiring to VCC (Pins 4 and 19) as close to the pin as possible. 2) Oscillator Input Oscillator input method a) Using Pins 1 and 2, input a self-excited oscillation signal through the composition of a Colpitts type crystal oscillator circuit. b) Directly input a local oscillation signal to Pin 1. 3) Mixer The mixer is of double-balance type. Pin 24 is the input pin. Input though a suitable matching circuit. The input impedance is 2.0 k Ω. Pin 3 serves as the output pin for the mixer, and a load resistance of 1.5 k Ω is incorporated. 4) IF Filter The filter to be connected between this mixer output and the IF limiter amplifier input should have the following specifications. I/O impedance : 1.5 k Ω ±10 % Band width : Changes according to applications. 5) IF Limiter Amplifier The gain of this IF limiter amplifier is approximately 100 dB. Take notice of the following points in making connection to the IF limiter amplifier input pin (Pin 5). a) Wiring to the IF limiter amplifier input (Pin 5) should be as short as possible. b) As the IF limiter amplifier output appears at QUAD (Pin 8), wiring to the ceramic discriminator connected to QUAD should be as short as possible to reduce the interference with the mixer output and IF limiter amplifier input. 1 2 3 VCC Ceramic filter 1 2 3 From local signal Ceramic filter Fig. 1 VCC 3 4 5 6 7 8 9 Wire as short and apart as possible As short as possible Fig. 2 |
Ähnliche Teilenummer - CXA3176N |
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Ähnliche Beschreibung - CXA3176N |
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