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ML3371 Arkusz danych(PDF) 6 Page - LANSDALE Semiconductor Inc. |
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ML3371 Arkusz danych(HTML) 6 Page - LANSDALE Semiconductor Inc. |
6 / 19 page www.lansdale.com Page 6 of 19 Issue A LANSDALE Semiconductor, Inc. ML3371, ML3372 ML3371 PIN FUNCTION DESCRIPTION OPERATING CONDITIONS VCC = 4.0 Vdc, RFIn = 100 µV, fmod = 1.0 kHz, fdev = 3.0 kHz. ML3371 at f RF = 10.7 MHz (see Figure 11). Pin Symbol Internal Equivalent Circuit Description Waveform 1 OSC1 OSC1 VCC 1 15 k The base of the Colpitts oscillator. Use a high impedance and low capacitance probe or a “sniffer” to view the wave– form without altering the frequency. Typical level is 450 mVpp. 2 OSC2 200 µA 2 OSC2 The emitter of the Colpitts oscillator. Typical signal level is 200 mVpp. Note that the signal is somewhat distorted compared to that on Pin 1. 3 MXOut 3 4 MixerOut VCC 15 k Output of the Mixer. Riding on the 455 kHz is the RF carrier component. The typical level is approximately 60 mVpp. 4 VCC 100 µA 1.5k Supply Voltage –2.0 to 9.0 Vdc is the operating range. VCC is decoupled to ground. 5 IFIn 1.8 k 7 51 k 53 k 5 IFIn 6 DEC1 Input to the IF amplifier after passing through the 455 kHz ceramic filter. The signal is attenuated by the filter. The typical level is approximately 50 mVpp. 6 7 DEC1 DEC2 DEC2 60 µA IF Decoupling. External 0.1 µF capacitors connected to VCC. 8 Quad Coil 10 VCC 8 Quad Coil 50 µA Quadrature Tuning Coil. Composite (not yet demodulated) 455 kHz IF signal is present. The typical level is 500 mVpp. |
Podobny numer części - ML3371 |
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Podobny opis - ML3371 |
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