Micrel, Inc. MICRF002/RF022
July 2008
5
M9999-070808
Symbol Parameter Condition Min Typ Max Units
Digital/Control Section
V
IN(high)
Input-High Voltage SEL0, SEL1, SWEN
0.8
V
DD
V
IN(low)
Input-Low Voltage SEL0, SEL1, SWEN
0.2
V
DD
I
OUT
Output Current DO, WAKEB pins, push-pull
10
µA
V
OUT(high)
Output High Voltage DO, WAKEB pins, I
OUT
= –1µA
0.9
V
DD
V
OUT(low)
Output Low Voltage DO, WAKEB pins, I
OUT
= +1µA
0.1
V
DD
t
R
, t
F
Output Rise and Fall Times DO, WAKEB pins, C
LOAD
= 15pF 10 µs
Notes:
1. Exceeding the absolute maximum rating may damage the device.
2. The device is not guaranteed to function outside its operating rating.
3. Devices are ESD sensitive, use appropriate ESD precautions. 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. Spurious reverse isolation represents the spurious components which appear on the RF input pin (ANT) measured into 50Ω with an input RF
matching network.
6. Parameter scales linearly with reference oscillator frequency f
T
. For any reference oscillator frequency other than 4.8970MHz, compute new
parameter value as the ratio:.
4.8970MHz) at value (parameter
4.8970MHz
MHz
REFOSC
f
×
7. Parameter scales inversely with reference oscillator frequency f
T
. For any reference oscillator frequency other than 4.8970MHz, compute new
parameter value as the ratio:
4.8970MHz) at value (parameter
MHz
REFOSC
f
4.8970MHz
×
8. 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 50Ohms and 100Ω respectively. Refer to Application Hint 35 for crystal
recommendations.
