MICRF218 datasheet(3/23 Pages) MICREL

3 / 23 page

Micrel

MICRF218

November 2011

M9999-111111

(408) 944-0800

Absolute Maximum Ratings(1)

Supply Voltage (VDD).................................................+5V

Input Voltage .............................................................+5V

Junction Temperature .........................................+150°C

Lead Temperature (soldering, 10sec.) .................. 260°C

Storage Temperature (TS).....................-65ºC to +150°C

Maximum Receiver Input Power ........................+10dBm

ESD Rating(3) ......................................................... 3KV

Operating Ratings(2)

Supply voltage (VDD)............................ +3.0V to +3.6V

Ambient Temperature (TA).................. –40°C to +85°C

Input Voltage (VIN) ......................................3.6V (Max)

Maximum Input RF Power .............................. –20dBm

Operating Frequency.......................... 300 to 450 MHz

Electrical Characteristics(4)

Specifications apply for VDD = 3.0V, VSS = 0V, CAGC = 4.7uF, CTH = 0.1uF, Bold values indicate –40°C - TA +85°C.

Symbol

Parameter

Condition

Min

Typ

Max

Units

Continuous Operation, fRX = 315 MHz

4.0

20:1 Duty Cycle, fRX = 315 MHz

0.2

Continuous Operation, fRX = 433.92 MHz

5.5

IDD

MICRF218 Operating

Supply Current

20:1 Duty Cycle, fRX = 433.92 MHz

0.3

Ishut

Shut down Current

µA

RF/IF Section

Image Rejection

fRX = 315 MHz, Narrow IF

0.98

MHz

st IF Center

Frequency

fRX = 433.92 MHz, Narrow IF

1.4

MHz

fRX = 315 MHz, Wide IF

1.8

MHz

st IF Center

Frequency

fRX = 433.92 MHz, Wide IF

2.4

MHz

fRX = 315 MHz, Narrow IF (50 ohms)

-108

dBm

Receiver Sensitivity @

1kbps

fRX = 433.92 MHz, Narrow IF (50 ohms)

-108

dBm

fRX = 315 MHz, Wide IF (50 ohms)

-106

dBm

Receiver Sensitivity @

1kbps

fRX = 433.92 MHz, Wide IF (50 ohms)

-106

dBm

fRX = 315 MHz, Narrow IF

400

kHz

fRX = 433.92 MHz, Narrow IF

550

kHz

fRX = 315 MHz, Wide IF

1000

kHz

IF Bandwidth

fRX = 433.92 MHz, Wide IF

1500

kHz

fRX = 315 MHz

16-j211

Ω

Antenna Input

Impedance

fRX = 433.92 MHz

9.54-j152

Ω

Receive Modulation

Duty Cycle

Note 6

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