March 2003

5

MICRF500

MICRF500

Micrel

Parameter

Condition

Min

Typ

Max

Units

Receive Section

f

Receiver Sensitivity (Note 6)

dBm

Input 1dB Compression Level

–34

dBm

Input IP3

–24

dBm

Input Impedance

22.5-j28.5

W

RSSI Dynamic Range

60

dB

RSSI Output Voltage

P

0.7

V

P

2.1

V

Adjacent Channel Rejection:

f

25kHz channel spacing

26

dB

f

100kHz channel spacing

37

dB

f

200kHz channel spacing

45

dB

f

700kHz channel spacing

48

dB

Blocking Immunity (1MHz)

RC filter: f

66

dB

RC filter: f

61

RC filter: f

59

dB

RC filter: f

53

dB

Maximum Receiver Bandwidth

175

kHz

Receiver Settling Time

1ms

Current Consumption

gyrator filter f

12

mA

Receive Mode

Current Consumption XCO

300

µA

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. Human body model, 1.5k in series with 100pF.

Note 4.

Modulation is applied to the VCO and therefore the modulation cannot have any DC component. Some kind of coding is needed to ensure that

the modulation is DC free, e.g., Manchester code or block code. With Manchester code the bitrate is half the baudrate, but with 3B4B block

Note 5:

Bitrate is the same as the baudrate.

Note 6:

Measured at 19.2k bauds and frequency deviation

±25kHz (external modulation), jitter of received data: < 45%.

-10

-5

0

5

10

15

10 15 20 25 30 35 40 45 50

I

TOT

(mA)

Output Power

vs. Current @ 25

°C