MICRF005

Micrel

MICRF005

4

October 2001

Symbol

Parameter

Condition

Min

Typ

Max

Units

Digital/Control Section

I

IN(pu)

V

V

8.5

µA

I

IN(pd)

V

V

12

µA

V

IN(high)

V

V

V

V

IN(low)

V

0.5

V

I

OUT

Output Current

DO, push-pull

90

µA

V

OUT(high)

Output-High Voltage

DO, I

0.9V

DD

V

V

OUT(low)

Output-Low Voltage

DO, I

0.1V

DD

V

t

Output Rise and Fall Times

DO, C

tbd

µs

Note 1.

Exceeding the absolute maximum rating may damage the device.

Note 2.

The device is not guaranteed to function outside its operating rating.

Note 3.

Devices are ESD sensitive. Handling precautions recommended.

Note 4:

defined as a return-to-zero (RZ) waveform with 50% average duty cycle (Manchester encoded data). The RF input is assumed to be matched

into 50

Ω.

Note 5:

Spurious reverse isolation represents the spurious components which appear on the RF input pin (ANT) measured into 50

Ω with an input RF

matching network. Parameter guaranteed by device characterization, not production tested.

Note 6:

Sensitivity, a commonly specified receiver parameter, provides an indication of the receiver’s input referred noise, generally input thermal

noise. However, it is possible for a more sensitive receiver to exhibit range performance no better than that of a less sensitive receiver if the

background noise is appreciably higher than the thermal noise. Background noise refers to other interfering signals, such as FM radio stations,

pagers, etc.

A better indicator of achievable receiver range performance is usually given by its selectivity, often stated as intermediate frequency (IF) or

radio frequency (RF) bandwidth, depending on receiver topology. Selectivity is a measure of the rejection by the receiver of “ether” noise.

More selective receivers will almost invariably provide better range. Only when the receiver selectivity is so high that most of the noise on the

receiver input is actually thermal will the receiver demonstrate sensitivity-limited performance.

Note 7:

Parameter scales linearly with reference oscillator frequency f

parameter value as the ratio:

f

MHz

14.3359

(parameter value at 14.3359MHz)

REFOSC

×

Note 8:

Parameter scales inversely with reference oscillator frequency f

new parameter value as the ratio:

14.3359

f

MHz

(parameter value at 14.3359MHz)

REFOSC

×

Note 9:

Parameter guaranteed by design (not tested).

Typical Characteristics

0

2

4

6

8

10

12

14

FREQUENCY (MHz)

Supply Current

vs. Frequency

T

V

0

2

4

6

8

10

12

14

16

-40 -20 0

20 40 60 80 100 120

TEMPERATURE (

°C)

Supply Current

vs. Temperature

f = 915MHz

V