MICRF114 datasheet(24/34 Pages) MICROCHIP

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MICRF114

DS50002416A-page 24

Preliminary

 2015 Microchip Technology Inc.

TABLE 5-4:

AC CHARACTERISTICS

Symbol

Parameter

Min

Typ

Max

Unit

Conditions/Notes

fTX

Transmit Frequency

285

—

445

MHz

32 times the crystal frequency

CTX

Output Capacitance

—

Selectable with 0.2 pF steps

PTX

Output Power

—

+13

—

dBm

Maximum setting(1)

-2

—

+13

dBm

Typical control range

—

Power control step

PSP

Spurious Emission

—

-45

dBc

Excluding harmonics

LOUT

Phase Noise

—

-76

dBc/Hz 100 kHz from carrier

—

-92

dBc/Hz 1 MHz from carrier

ZOUT

RF Output Impedance(2)

—

7.5-j50.9

—



At 315 MHz

—

6.0-j32.2

—



At 433 MHz

Modulation Data Rate

—

115.2

kbps

NRZ

—

57.6

kbps

Manchester encoded

hMOD

Modulation Depth

—

SRVDD

VDD Slew Rate

0.1

—

V/ms

For proper POR operation

CXT

Crystal Load Capacitor

—

22.5

Selectable with 0.5 pF steps

RXT

Crystal Loss Resistance

—



—

Note 1: Valid with optimum matching circuit at TOP = 27°C and VDD = 2.7V to 3.3V

2: The RF output impedance varies with the operating frequency, the output power setting PTX (which is not

necessarily equal to the actual output power) and the output tuning capacitance setting CTX. The values

given: PTX = +10 dBm and CTX = 0 pF.

TABLE 5-5:

TIMING CHARACTERISTICS

Symbol

Parameter

Min

Typ

Max

Unit

Conditions/Notes

tDP

POR Delay Time

—

tWK

Wake-up Time

—

Without calibration

tCL

Calibration Time

—

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