MICRF002 データシートの表示（PDF） - Micrel

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MICRF002

300-440MHz QwikRadio® ASK Receiver

Micrel 

Micrel, Inc.

MICRF002/RF022

Symbol Parameter

Condition

Min Typ Max Units

Digital/Control Section

VIN(high)

Input-High Voltage

SEL0, SEL1, SWEN

0.8

VDD

VIN(low)

Input-Low Voltage

SEL0, SEL1, SWEN

0.2

VDD

IOUT

Output Current

DO, WAKEB pins, push-pull

10

µA

VOUT(high) Output High Voltage

DO, WAKEB pins, IOUT = –1µA

0.9

VDD

VOUT(low) Output Low Voltage

DO, WAKEB pins, IOUT = +1µA

0.1

VDD

tR, tF

Output Rise and Fall Times

DO, WAKEB pins, CLOAD = 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 fT. For any reference oscillator frequency other than 4.8970MHz, compute new

parameter value as the ratio:.

fREFOSCMHz × (parameter value at 4.8970MHz)

4.8970MHz

7. Parameter scales inversely with reference oscillator frequency fT. For any reference oscillator frequency other than 4.8970MHz, compute new

parameter value as the ratio:

4.8970MHz

× (parameter value at 4.8970MHz)

fREFOSC MHz

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.

July 2008

5

M9999-070808

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