MICRF112_13 datasheet(3/21 Pages) MICREL

3 / 21 page

Micrel, Inc.

MICRF112

February 2013

M9999-020713

Absolute Maximum Ratings

(1)

Supply Voltage (VDD) .................................................+4.3V

Voltage on PAOUT......................................................+7.2V

Voltage on I/O Pins ........................ VSS – 0.3 to VDD + 0.3

Lead Temperature (soldering, 10s).......................... +300°C

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

ESD Rating.................................................................Note 3

Operating Ratings

(2)

Supply Voltage (VDD) ...................................... 1.8V to 3.6V

Ambient Operating Temperature (TA) ........-40°C to +125°C

Transmitter Frequency Range ............. 300MHz to 450MHz

Electrical Characteristics

(4)

peciﬁcations apply for VDD = 3.0V, TA = 25°C, FreqREFOSC = 13.560MHz, EN = VDD. 1Kbps data rate, 50% duty cycle. RL 50Ω load

(matched)

Parameter

Condition

Min.

Typ.

Max.

Units

Power Supply

Standby Supply Current, Iq

EN = VSS

0.05

µA

Mark Supply Current ION

@ 315MHz, POUT = +10dBm

11.5

@ 433.92MHz, POUT = +10dBm

11.6

SPACE Supply Current, IOFF

@ 315MHz

2.4

@ 433.92MHz

2.7

RF Output Section and Modulation Limits:

Output Power Level, POUT

FSK or ASK "Mark"

@ 315MHz

(4)

dBm

@ 433.92MHz

(4)

dBm

Harmonics output for

315MHz

@ 630MHz

(4) 2nd harm.

−53

dBc

@ 945MHz

(4) 3rd harm.

−53

dBc

Harmonics Output for

433.92MHz

@ 867.84MHz

(4) 2nd harm.

−51

dBc

@ 1301.76MHz

(4) 3rd harm.

−65

dBc

Extinction Ratio for ASK

dBc

FSK Modulation

Frequency Deviation

Load capacitor = 10pF, crystal type = HC49/U

kHz

Data Rate

Kbps

ASK Modulation

Data Rate

Kbps

Occupied Bandwidth

@ 315MHz

(5)

<700

kHz

@ 433.92MHz

(5)

<1000

kHz

VCO Section

315MHz Single Side Band

Phase Noise

@ 100kHz from Carrier

−76

dBc/Hz

@ 1000kHz from Carrier

−79

dBc/Hz

433.92MHz Single Side Band

Phase Noise

@ 100kHz from Carrier

−72

dBc/Hz

@ 1000kHz from Carrier

−81

dBc/Hz

Reference Oscillator Section

XTLIN, XTLOUT, XTLMOD

Pin capacitance

External Capacitance

See Schematic C17 & C18

Oscillator Start-Up Time

(6)

Crystal: HC49S

400

µs

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