MICRF501BLQ TR Micrel Inc, MICRF501BLQ TR Datasheet
MICRF501BLQ TR
Specifications of MICRF501BLQ TR
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MICRF501BLQ TR Summary of contents
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MICRF501 General Description The MICRF501 is a single chip tranceiver intended for ISM (Industrial, Scientific and Medical) and SRD (Short Range Device) frequency bands from 300MHz to 600MHz with FSK data rates up to 128k baud. The transmitter consists of ...
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MICRF501 Pin Configuration ICHOUT QCHOUT OSCVDD OSCGND CMPOUT Pin Description Pin Number Pin Name 1 IFGND 2 IFVDD 3 ICHOUT 4 QCHOUT 5 OSCVDD 6 OSCIN 7 OSCGND 8 GND 9 CMPOUT 10 CMPR 11 MOD 12 XOSCIN 13 XOSCOUT ...
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MICRF501 Pin Description, cont’d Pin Number Pin Name 24 PA_C 25 PABIAS 26 RFOUT 27 RFGND 28 RFVDD 29 RFIN 30 RFGND2 31 LNA_C 32 MIXERGND 33 MIXERVDD 34 MIXIOUTP 35 MIXIOUTN 36 IFIINP 37 IFIIN 38 MIXQOUTP 39 MIXQOUTN ...
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MICRF501 Absolute Maximum Ratings Maximum Supply Voltage (V ) ................................... +7V DD Maximum NPN Reverse Base-emitter Voltage .......... +2.5V Storage Temperature Range (T ) ............ –55°C to +150°C S ESD Rating, Note 3 ................................................. 500mV Electrical Characteristics F = 850MHz, ...
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MICRF501 Parameter Condition Receive Section f IN Receiver Sensitivity (Note 6) BER=10 Input 1dB Compression Level Input IP3 Input Impedance RSSI Dynamic Range RSSI Output Voltage Adjacent Channel Rejection 10kHz 25kHz channel spacing C ...
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MICRF501 Functional Diagram MICRF501 LNA PA 90° Prescaler 32/33 N-counter Filters S I Gyrator Filters LD ...
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MICRF501 Typical Application Figure 3 shows an example of a transceiver with modulation applied to the VCO. The inductors and trimming capacitors must have a good high frequency performance. The varactor MA4ST-350-1141 is a single variable capaci- tance diode manufactured ...
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MICRF501 List of components Component Values R1 10Ω R2 10Ω R3 10Ω R4 10Ω R5 10Ω R6 8.2kΩ R7 3.6kΩ R8 47kΩ R9 8.2kΩ R10 8.2kΩ R11 150kΩ R12 3.3kΩ R13 270kΩ R14 1kΩ R15 3.6kΩ R16 1kΩ C1 1nF ...
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MICRF501 Applications Information VCO and PLL Section The frequency synthesizer consists of a VCO, crystal oscilla- tor, dual-modulus prescaler, programmable frequency divid- ers, phase-detector, charge pump, lock detector and an external loop filter. The dual-modulus prescaler divides the VCO-frequency by ...
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MICRF501 equal to two (Ref6 = 1) reference steps or four reference steps (Ref6 = 0). The bit setting that corresponds to lock can vary, depending on temperature, loop filter and type of varactor. Therefore, the lock detect circuit needs ...
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MICRF501 Modulation Inside PLL A fast PLL requires a loop filter with relatively high bandwidth second order loop filter is chosen, it may not give adequate attenuation of the comparison frequency. There- fore in the following example a ...
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MICRF501 signals. The receive mode loop filter comprises C115, C116, R109, R101 and C101. Modulation Outside PLL (Open Loop) In this mode the charge pump output is tri-stated. The loop is open and will therefore not track the modulation. This ...
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MICRF501 Gyrator Filter The main channel filter is a gyrator capacitor implementation of a seven-pole elliptic lowpass filter. The elliptic filter mini- mizes the total capacitance required for a given selectivity and dynamic range. An external resistor can adjust the ...
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MICRF501 Programming A two-line bus is used to program the circuit; the two lines being CLKIN and REGIN. The 2-line serial bus interface allows control over the frequency dividers and the selective powering up of Tx, Rx and Synthesizer circuit ...
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MICRF501 Name Description A1 frequency divider A1, 6 bits A0 frequency divider A0, 6 bits N1 frequency divider N1, 12 bits N0 frequency divider N0, 12 bits M1 frequency divider M1, 10 bits M0 frequency divider M0, 10 bits RxFilt ...
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MICRF501 When FSK modulation is applied to the VCO the PLL is using the dividers A1, N1 and M1. When Mod1 = 1 and Mod0 = possible to switch between the different dividers in the PLL. DATAIXO ...
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MICRF501 Example 434.245MHz lation is applied to the VCO 143 143 RxFilt Pa2 Pa1 Ref6 Ref5 Ref4 ...
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MICRF501 Package Information MICREL, INC. 1849 FORTUNE DRIVE SAN JOSE, CA 95131 USA + 1 (408) 944-0800 TEL The information furnished by Micrel in this datasheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel ...