micrf213 Micrel Semiconductor, micrf213 Datasheet
micrf213
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micrf213 Summary of contents
Page 1
... OOK and ASK modulation up to 7.2kbps. The down-conversion mixer also provides image rejection. All post-detection data filtering is provided on the MICRF213. Any one of four filter bandwidths may be selected externally by the user using binary steps (from 1.18kHz to 9.44kHz, Manchester Encoded). The user ...
Page 2
... Driven by startup excitation circuit during the internal startup control sequence. May 2007 RO1 1 16 RO2 GNDRF 2 15 ANT 3 14 GNDRF 4 13 VDD SEL0 7 10 SHDN 8 9 MICRF213AYQS 2 MICRF213 NC RSSI CAGC CTH SEL1 DO GND M9999-052307-A (408) 944-0800 ...
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... Note ATTACK DECAY T = 25º +105º -50dBm -110dBm 315MHz RX Crystal Load Cap = 10pF V(REFOSC MICRF213 (2) ).............................+3.0V to +3.6V DD )................ –40°C to +105° ...................................... 3.6V (Max 315 MHz unless otherwise noted. RX Min Typ Max 3.9 0.33 20 0.86 -2 -110 235 32.5 – j235 ...
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... SEL0=0, SEL1=0 SEL0=1, SEL1=0 SEL0=0, SEL1=1 SEL0=1, SEL1=1 As output source @ 0.8Vdd sink @ 0.2Vdd CI = 15pF, pin DO, 10-90% -110dBm to -50dBm -110dBm to -50dBm ±15 50% data duty cycle, input power to Antenna = - 20 dBm TH 4 MICRF213 Min Typ Max Units 165 kΩ ±2 nA ±800 nA 1180 2360 Hz 4720 9400 260 µ ...
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... BER May 2007 DC Current vs. Frequency 4.5 4.0 3.5 3.0 -20 280 300 320 FREQUENCY (MHz) AGC Voltage vs. Input Power 1.8 1.7 1.6 1.5 1.4 1.3 1.2 1.1 1 -150 -100 -50 INPUT POWER (dBm) 5 Selectivity vs. Frequency Response 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 340 360 304 308 312 FREQUENCY (MHz) 0 MICRF213 316 320 324 M9999-052307-A (408) 944-0800 ...
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... SHDN Functional Description Figure 1. Simplified Block Diagram the basic structure of the MICRF213 made of three sub- blocks; Image Rejection UHF Down-converter, the OOK Demodulator, and Reference and Control Logics. Outside the device, the MICRF213 requires only three components to operate; two capacitors (CTH, and CAGC) and the reference frequency device, usually a quartz crystal ...
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... Figure 2) uses a basic Colpitts crystal oscillator configuration with a MOS transconductor to provide negative resistance. All capacitors shown in the figure are integrated inside MICRF213. R01 and R02 are external pins of MICRF213. The user only need connect the reference oscillation crystal. Reference oscillator crystal frequency can be calculated thus as: ...
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... C8 L2 6.8pF 39nH 5% 68nH 5% The MICRF213 can be fully tested by using one of the many evaluation boards designed by Micrel and intended for use with this device entry level, the QR213HE1 (reference Figure 3) offers a good start for most applications. It has a helical PCB antenna with its matching network, a band-pass-filter ...
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... Table 5 shows the crystal frequencies and one of Micrel’s approved crystal manufactures (www.hib.com.br). The oscillator of the MICRF213 is a Colpitts type very sensitive to stray capacitance loads. Thus, very good care must be taken when laying out the printed circuit board ...
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... Short 1290 504 Short 2580 252 Open 5170 126 Open 10340 63 Table 8. JP1 and JP2 Setting, 345.0MHz M9999-052307-A MICRF213 Maximum baud rate for 50% Duty Cycle (hertz) 908 1815 3631 7230 Maximum baud rate for 50% Duty Cycle (hertz) 8770 1754 3500 ...
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... Crystal vendors suggest that the data will show up in the DO pin around 1msec time, and 2msec over the temperature range of the device. See Figure 10. 11 MICRF213 DO Pin M9999-052307-A (408) 944-0800 ...
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... Micrel, Inc. Figure 10. Time-to-Good Data After Shut Down Cycle, Room Temperature May 2007 12 MICRF213 M9999-052307-A (408) 944-0800 ...
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... Micrel, Inc. PCB Considerations and Layout Figure 11 through 16 show some of the printed circuit layers for the QR211HE1 board. The MICRF213 shares the exact same board with different component values. Use the Gerber files provided (downloadable from Micrel Website: www.micrel.com) which have the remaining layers needed to fabricate this board. When copying or making one’ ...
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... Micrel, Inc. Figure 14. QR211/213HE1 Bottom Silkscreen Layer, Mirror Image May 2007 Figure 13. QR211/213HE1 Top Silkscreen Layer Figure 15. QR211/213HE1 Dimensions 14 MICRF213 M9999-052307-A (408) 944-0800 ...
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... Murata / ACT1 68nH 5%, 0402/0603 (3) (1) (4) / Murata / ACT1 75nH 2%, 0402/0603 (np) 0402, not placed (2) 100kΩ, 0402 (5) (np)9.81563MHz Crystal (5) 9.81563MHz Crystal (6) 3.3V, QwikRadio 15 MICRF213 230mm 20 AWG, rigid wire ® 315MHz Receiver M9999-052307-A (408) 944-0800 Qty ...
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... A Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk and Purchaser agrees to fully indemnify Micrel for any damages resulting from such use or sale. May 2007 16-Pin QSOP (QS) © 2007 Micrel, Incorporated. 16 MICRF213 M9999-052307-A (408) 944-0800 ...