MICRF009 datasheet(4/16 Pages) MICREL

4 / 16 page

Micrel

MICRF009

January 18, 2005

M9999-011805

(408) 955-1690

Symbol

Parameter

Condition

Min

Typ

Max

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

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

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:

REFOSCMHZ

9.794MHz

× parameter value at 9.79MHz

()

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

REFOSCMHZ

× parameter value at 9.794MHz

()

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