MICRF103 データシートの表示（PDF） - Micrel
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MICRF103 Datasheet PDF : 7 Pages
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MICRF103
Micrel
Note 1.
Note 2.
Note 3.
Note 4.
Note 5.
Note 6.
Note 7.
Exceeding the absolute maximum rating may damage the device.
The device is not guaranteed to function outside its operating rating.
Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF.
After the release of the STDBY, the device requires an initialization time to settle the REFOSC and the internal PLL. The first MARK state
(ASK HIGH) after exit from STDBY needs to be longer than the initialization time. The subsequent low to high transitions will be treated as
data modulation whereby the envelope transition time will apply.
The varactor capacitance tuning range indicates the allowable external antenna component variation to maintain tune over normal production
tolerances of external components. Guaranteed by design not tested in production.
For the ASK modulation scheme, the part will accept ASK (digital ON/OFF) input and will transmit the data with a finite extinction ratio and the
pin will set the MARK power level.
When the device is first powered up or it loses power momentarily, it goes into the calibration mode to tune up the transmit antenna.
Test Circuit
MICRF103
PC
VDD
STBY
ANTP
VSS
ANTM
REFOSC ASK
680pF
100Ω
7.1nH
200Ω
680pF
100Ω
4:1
50Ω
MICRF103
4
June 2002
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