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EVB71101-315-FSK-A Datasheet(PDF) 7 Page - Melexis Microelectronic Systems |
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EVB71101-315-FSK-A Datasheet(HTML) 7 Page - Melexis Microelectronic Systems |
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7 / 14 page  EVB71101 315/433MHz Receiver Evaluation Board Description 39012 71101 01 Page 7 of 14 EVB Description Rev. 011 June/07 2.1.2 Board Component Values for FSK Part Size Value @ 315 MHz Value @ 433.92 MHz Tolerance Description C1 0805 27 pF 27 pF ±5% crystal series capacitor C3 0603 1 nF 1 nF ±10% loop filter capacitor C6 0603 6.8 pF 4.7 pF ±5% LNA output tank capacitor C7 0603 2.7 pF 2.2 pF ±5% MIX1 input matching capacitor C9 0603 33 nF 33 nF ±10% IFA feedback capacitor C10 0603 1 nF 1 nF ±10% IFA feedback capacitor C11 0603 1 nF 1 nF ±10% IFA feedback capacitor C12 0805 10 pF 10 pF ±5% DEMOD phase-shift capacitor C15 0805 100 pF 100 pF ±5% demodulator output low-pass capacitor, this value for data rates < 20 kbps NRZ, for higher data rates decrease the value C16 0805 1.5 nF 1.5 nF ±10% RSSI output low-pass capacitor C17 0805 10 nF 10 nF ±10% data slicer capacitor, this value for data rates > 0.8 kbps NRZ, for lower data rates increase the value CB1 to CB5 CB7 to CB8 0603 330 pF 330 pF ±10% de-coupling capacitor CB6 0805 33 nF 33 nF ±10% de-coupling capacitor C_RO 0603 330 pF 330 pF ±5% optional capacitor, to couple external RO signal R1 0805 10 k Ω 10 k Ω ±5% loop filter resistor R2 0603 330 Ω 330 Ω ±5% optional CERFIL output matching resistor R4 0805 330 k Ω 330 k Ω ±5% data slicer resistor R5 0805 220 k Ω 220 k Ω ±5% loading resistor RL1 0805 470 Ω 470 Ω ±5% MIX1 bias resistor RL2 0805 470 Ω 470 Ω ±5% MIX1 bias resistor L1 0603 0 Ω 68 nH ±5% L2 0603 33 nH 82 nH ±5% SAW filter matching inductor from Würth-Elektronik (WE-KI series), or equivalent part L3 0603 22 nH 15 nH ±5% LNA output tank inductor from Würth-Elek- tronik (WE-KI series), or equivalent part SMD 6x3.5 fundamental-mode crystal from Telcona/Horizon (HEX22 series) or equivalent part XTAL HC49 SMD 20.35625 MHz @ RF = 315 MHz 26.45125 MHz @ RF = 433.92 MHz ±25ppm cal. ±30ppm temp. fundamental-mode crystal, Cload = 10 pF to 15 pF, C0, max = 7 pF, R1, max = 50 Ωl SAFCC433MBL0X00 (f0 = 433.92 MHz) B3dB = 840 kHz SAWFIL SMD 3x3 SAFDC315MSM0T00 (f0 = 315.00 MHz) B3dB = 5MHz low-loss SAW filter from Murata, or equivalent part CERFIL SMD 3.45x3.1 SFECF10M7HA00 B3dB = 180 kHz ceramic filter from Murata, or equivalent part CERDIS SMD 4.5x2 CDSCB10M7GA135 ceramic discriminator from Murata, or equivalent part |
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