MICRF009 Просмотр технического описания (PDF) - Micrel
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MICRF009 Datasheet PDF : 16 Pages
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Micrel
MICRF009
Symbol Parameter
Condition
Min
Typ
Max
U
Digital/Control Section
VIH
Input High Voltage
SEL0, SEL1, SWEN
0.8
VDD
VIL
Input Low Voltage
SEL0, SEL1, SWEN
0.2
VDD
IOUT
Output Current
DO pin, push-pull
45
µA
VOH
Output High Voltage
DO pin, IOUT = –30µA
0.9
VDD
VOL
Output Low Voltage
DO pin, IOUT = +30µA
0.1
VDD
tR, tF
Output Rise and Fall Time
DO pin, CLOAD = 15pF
4
µs
Notes:
1. Exceeding absolute maximum ratings may damage the device.
2. The device is not guaranteed to function outside its operating ratings.
3. Devices are ESD sensitive, use appropriate ESD precautions. The device meets Class 1 ESD test requirements, (human body model HBM), in
accordance with MIL-STD-883C, method 3015. Do not operate or store near strong electrostatic fields.
4. Sensitivity is defined as the average signal level measured at the input necessary to achieve 10-2 BER (bit error rate). The RF input is assumed to
be matched to 50Ω.
5. Parameter scales linearly with reference oscillator frequency fT. For any reference oscillator frequency other than 9.794MHz, compute new
parameter value as the ratio:
fREFOSCMHZ × (parameter value at 9.79MHz)
9.794MHz
6. Spurious reverse isolation represents the spurious components, which appear on the RF input pin (ANT) measured into 50Ω with an input RF
matching network.
7. Series resistance of the resonator (ceramic resonator or crystal) should be minimized to the extent possible. In cases where the resonator series
resistance is too great, the oscillator may oscillate at a diminished peak-to-peak level, or may fail to oscillate entirely. Micrel recommends that
series resistances for ceramic resonators and crystals not exceed 50Ω and 100Ω, respectively.
8. Crystal load capacitor is 10pF. See Figure 5 in “REFOSC” section for reference oscillator operation.
9. Parameter scales inversely with reference oscillator frequency fT. For any reference oscillator frequency other than 9.794MHz, compute new
parameter value as the ratio:
9.794MHz × (parameter value at 9.794MHz)
fREFOSCMHZ
January 18, 2005
4
M9999-011805
(408) 955-1690
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