MICRF112 datasheet(6/46 Pages) MICROCHIP

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MICRF112

System Overview

Data Sheet

DS70005554A - 6

Parameter

Condition

Min.

Typ.

Max.

Units

Power Supply

Standby Supply Current, Iq

EN= VSS

—

0.05

µA

Mark Supply Current ION

@315 MHz, POUT = +10 dBm

—

11.5

—

@433.92 MHz, POUT = +10 dBm

—

11.6

—

SPACE Supply Current, IOFF

@ 315 MHz

—

2.4

—

@ 433.92 MHz

—

2.7

—

RF Output Section and Modulation Limits:

Output Power Level, POUTFSK or ASK “Mark”

@ 315 MHz(4)

—

dBm

@ 433.92 MHz(4)

—

dBm

Harmonics output for 315 MHz

@630 MHz(4) 2nd harm

—

-53

—

dBc

@945 MHz(4) 3rd harm

—

-53

—

dBc

Harmonics Output for

433.92 MHz

@867.84 MHz(4) 2nd harm

—

-51

—

dBc

@1301.76 MHz(4) 3rd harm

—

-65

—

dBc

Extinction Ratio for ASK

—

dBc

FSK Modulation

Frequency Deviation

Load capacitor = 10 pF, crystal type =

HC49/U

—

kHz

Data Rate

—

Kbps

ASK Modulation

Data Rate

—

Kbps

Occupied Bandwidth

@ 315 MHz(5)

—

<700 —

kHz

@ 433.92 MHz(5)

—

<1000 —

kHz

VCO Section

315 MHz Single Side Band Phase Noise

@100 kHz from Carrier

—

-76

—

dBc/Hz

@1000 kHz from Carrier

—

-79

—

dBc/Hz

433.92 MHz Single Side Band Phase Noise

@100 kHz from Carrier

—

-72

—

dBc/Hz

@1000 kHz from Carrier

—

-81

—

dBc/Hz

Reference Oscillator Section

XTLIN, XTLOUT, XTLMOD

Pin capacitance

—

External Capacitance

See Schematic C17 and C18

—

Oscillator Start-Up Time(6)

Crystal:HC49S

—

400

—

µs

Digital/Control Section

Output Blanking

STDBY transition from low to high

—

500

—

µs

Digital Input (EN, ASK and FSK)

High (VIH)

0.8 x VDD —

—

Low (VIL)

—

0.2xVDD V

Digital Input Leakage Current (EN, ASK and FSK

Pins)

High (VIH)

—

0.05

—

µA

Low (VIL)

—

0.05

—

µA

Undervoltage Lock Out (UVLO)

—

1.6

—

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