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MLX71122 Datasheet(PDF) 55 Page - Melexis Microelectronic Systems |
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MLX71122 Datasheet(HTML) 55 Page - Melexis Microelectronic Systems |
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55 / 59 page  MLX71122 300 to 930MHz FSK/FM/ASK Receiver Datasheet REVISION 014 – AUGUST, 2016 Page 55 of 59 390 10 71122 01 6.3. Test Circuit Component List Below table is for all test circuits shown in Figures 20 to 22. Part Size Value @ 315 MHz Value @ 433.92 MHz Value @ 868.3 MHz Value @ 915 MHz Tol. Description C1 0603 3.9 pF 4.7 pF 3.3 pF 1.5 pF 5% matching capacitor C2 0603 1.5 pF 1.5 pF 1.5 pF 1.5 pF 5% matching capacitor C3 0603 100 pF 100 pF 100 pF 100 pF 5% LNA input filtering capacitor C4 0603 4.7 pF 3.3 pF 2.7 pF 2.2 pF 5% LNA output tank capacitor C5 0603 100 pF 100 pF 100 pF 100 pF 5% MIX1 negative input matching capacitor C6 0603 100 pF 100 pF 100 pF 100 pF 5% MIX1 negative input matching capacitor C7 0603 1 nF 1 nF 1 nF 1 nF 10% RSSI output low pass capacitor, for data rate of 4 kbps NRZ C8 0603 220 pF 220 pF 220 pF 220 pF 10% data low-pass filter capacitor, for data rate of 4 kbps NRZ C9 0603 150 pF 150 pF 150 pF 150 pF 10% data low-pass filter capacitor, for data rate of 4 kbps NRZ C10 0603 33 nF 33 nF 33 nF 33 nF 10% data slicer capacitor, for data rate of 4 kbps NRZ not required in Figure 19 C11 0603 33 nF 33 nF 33 nF 33 nF 10% PKDET positive filtering capacitor, for data rate of 4 kbps NRZ not required in Figures. 17 and 18 C12 0603 33 nF 33 nF 33 nF 33 nF 10% PKDET negative filtering capacitor, for data rate of 4 kbps NRZ not required in Figures 17 and 18 CB0 1210 10 F 10 F 10 F 10 F 10% decoupling capacitor, low-noise power supply recommended CB1 0603 470 pF 470 pF 470 pF 470 pF 10% decoupling capacitor CB2 0603 33 nF 33 nF 33 nF 33 nF 10% decoupling capacitor CB3 0603 33 nF 33 nF 33 nF 33 nF 10% decoupling capacitor CF1 0603 2.2 nF 2.2 nF 2.2 nF 2.2 nF 5% loop filter capacitor CF2 0603 220 pF 220 pF 220 pF 220 pF 5% loop filter capacitor CX 0603 27 pF 27 pF 27 pF 27 pF 5% crystal series capacitor RB0 0603 10 10 10 10 5% protection resistor RF 0603 27 k 27 k 47 k 47 k 5% loop filter resistor RBS 0603 30 k 30 k 30 k 30 k 2% reference bias resistor L0 0603 33 nH 15 nH 8.2 nH 8.2 nH 5% VCO tank inductor L1 0603 68 nH 47 nH 22 nH 15 nH 5% matching inductor L3 0603 33 nH 22 nH 5.6 nH 5.6 nH 5% LNA output tank inductor XTAL SMD 5x3.2 10.00000 MHz 20ppm cal., 30ppm temp. fundamental-mode crystal Remark: The loop filter elements CF1, CF2 and RF are chosen for R=75 in case of 315 and 433.92MHz (fPFD=133kHz) and R=125 for 868.3 and 915MHz (fPFD=80kHz) in order to allow 100kHz frequency steps of the synthesizer. For other values of R the loop filter elements need to be recalculated. |
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