MICRF219AAYQS TR Micrel Inc, MICRF219AAYQS TR Datasheet
MICRF219AAYQS TR
Specifications of MICRF219AAYQS TR
MICRF219AAYQSTR
Related parts for MICRF219AAYQS TR
MICRF219AAYQS TR Summary of contents
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... Micrel’s web site at: www.micrel.com. _________________________________________________________________________________________________________________________ Typical Application MICRF219A Typical Application Circuit (433.92MHz, 1kbps) Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • July 2011 MICRF219A 300MHz to 450MHz ASK/OOK Receiver with ...
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Micrel, Inc. Pin Configuration Pin Description Pin Pin Pin Function Number Name Reference resonator connection to the Pierce oscillator. May also be driven by external reference signal of 1 RO1 200mVp-p to 1.5V p-p amplitude maximum. Internal capacitance of 7pF ...
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Micrel, Inc. Pin Description (Continued) Pin Pin Pin Function Number Name Demodulation Threshold Voltage Integration Capacitor. Connect a 0.1μF capacitor from CTH pin to GND 12 CTH to provide a stable slicing threshold. AGC Filter Capacitor. Connect a capacitor from ...
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Micrel, Inc. Absolute Maximum Ratings Supply Voltage (V )......................................................+5V DD SQ, SEL0, SEL1, SCLK, SHDN DC Voltage. ........................ −0. ANT DC Voltage............................................ -0.3V to +0.3V Junction Temperature .............................................. +150°C Lead Temperature (soldering, 10sec.)..................... +300°C Storage Temperature (T ).........................−65°C ...
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Micrel, Inc. Electrical Characteristics V = 3.3V 0V open SHDN –40°C ≤ T ≤ 105°C. “Bit rate” refers to the encoded bit rate throughout this datasheet (see Note 4). A Parameter Demodulator CTH Source ...
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Micrel, Inc. Typical Characteristics V = 3.3V +25°C, BER measured with PN9 sequence, unless otherwise noted Current vs. Receiver Frequency 6.5 6.0 5.5 5.0 4.5 4.0 3.5 300 325 350 375 400 425 RECEIVER FREQUENCY (MHz) ...
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Micrel, Inc. Typical Characteristics (Continued 3.3V +25°C, BER measured with PN9 sequence, unless otherwise noted Sensitivity at 1% BER D[4: -98 -100 -102 -104 315MHz -106 433.92MHz -108 -110 ...
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Micrel, Inc. Functional Diagram July 2011 Figure 1. Simplified Block Diagram 8 MICRF219A M9999-071811-A RadioTech@micrel.com or (408) 944-0800 ...
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Micrel, Inc. Functional Description The simplified block diagram (Figure 1) illustrates the basic structure of the MICRF219A receiver made up of four sub-blocks: • UHF Down-Converter • ASK/OOK Demodulator • Reference and Control logic • Auto-poll circuitry Outside ...
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Micrel, Inc. Detector and Programmable Low-Pass Filter The demodulation starts with the detector removing the carrier from the IF signal. Post detection, the signal becomes baseband information. The low-pass filter further enhances the baseband signal. There are four selectable low-pass ...
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Micrel, Inc. The ability of the chip to track to a signal that DECREASED in strength is much slower, since only 1.5μA is available to charge CAGC to increase the gain. When designing a transmitter that communicates with the MICRF219A, ...
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Micrel, Inc. Reference Oscillator The reference oscillator in the MICRF219A (Figure 5) uses a basic Pierce crystal oscillator configuration with MOS transconductor. Though the MICRF219A has built- in load capacitors for the crystal oscillator, the external load capacitors are still ...
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Micrel, Inc. Serial Interface Register Programming There are twenty register bits in MICRF219A. The functions are described in the following tables. D19 Always set this bit to 0 D18 Always set this bit D17 Squelch Enable Pin ...
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Micrel, Inc. Set number of consecutive valid D8 D7 bits before releasing bit - default Set slice level 0 1 Slice Level 30 ...
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Micrel, Inc. Serial Interface Register Loading Examples See Figures 9 to 11. (Channel 1 is the DO pin, and channel 2 is the SCLK pin). Figure 9. All Bits D19 through Figure 10. All Bits D19 through ...
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Micrel, Inc. Auto-Poll Programming Example RF frequency 433.92MHz, bit rate 1kbps, bit width 1ms. D[19 AGC fast attack enabled D[18 watchdog timer is OFF D[17 pin floating, squelch is OFF D[16 ...
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Micrel, Inc. Application Information Initial Startup When supply voltage is initially applied, it should rise monotonically from 0V to 3.3V to ensure proper startup of the crystal oscillator and the PLL. It should not have multiple bounces across 2.6V, which ...
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Micrel, Inc. Crystal Selection The crystal resonator provides a reference clock for all the device internal circuits. Crystal tolerance needs to be chosen such that the down-converted signal is always inside the IF bandwidth of MICRF219A. From this consideration, the ...
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Micrel, Inc. PCB Recommended Layout Considerations July 2011 MICRF219A Evaluation Board Assembly MICRF219A Evaluation Board Top Layer MICRF219A Evaluation Board Bottom Layer 19 MICRF219A M9999-071811-A RadioTech@micrel.com or (408) 944-0800 ...
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Micrel, Inc. MICRF219A Evaluation Board Schematic July 2011 20 RadioTech@micrel.com MICRF219A M9999-071811-A or (408) 944-0800 ...
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Micrel, Inc. Bill of Materials − MICRF219A Evaluation Board: 433.92MHz Item Part Number C3 GQM1885C2A1R2C C4 GRM219R60J475K C5, C6 GRM188R71E104K C7 C9 GQM1885C2A1R5C C10, C11 GRM1885C1H100J C12 GRM188R61A105K J2 J3 571-41031480 L2 LQG18HN39NJ00 L3 LQG18HN33NJ00 R3 CRCW040250KFKEA R4 CRCW0402100KFKEA R5, ...
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Micrel, Inc. Bill of Materials − MICRF219A Evaluation Board: 315MHz Item Part Number C3 GQM1885C2A1R5C C4 GRM21BR60J475K C5, C6 GRM188R71E104K C7 C9 GQM1885C2A1R2C C10, C11 GRM1885C1H100J C12 GRM188R61A105K J2 J3 571-41031480 L2, L3 LQG18HN68NJ00 R3 CRCW040250KFKEA R4 CRCW0402100KFKEA R5, R6 ...
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Micrel, Inc. Package Information MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB Micrel makes no representations or warranties with respect to the accuracy or completeness of the information furnished ...