ADF7020 datasheet(4/40 Pages) AD

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ADF7020

Preliminary Technical Data

Rev. PrH | Page 4 of 40

SPECIFICATIONS

VDD = 2.3 V to 3.6 V, GND = 0 V, TA = TMIN to TMAX, unless otherwise noted.

Typical specifications are at VDD = 3 V, TA = 25°C.

All measurements are performed using the test circuit in Figure TBD using PN9 data sequence, unless otherwise noted.

Table 1.

Parameter

Min

Typ

Max

Unit

Test Conditions

RF CHARACTERISTICS

Frequency Ranges

862

928

MHz

Frequency Ranges (Divide-by-2 Mode)

433

464

MHz

Phase Frequency Detector Frequency

RF/256

MHz

TRANSMISSION PARAMETERS

Data Rate FSK/GFSK

0.3

200

kbps

Data Rate OOK/ASK

0.3

641

kbps

Frequency Shift Keying

GFSK/FSK Frequency Deviation2, 3

110

kHz

PFD = 3.625 MHz

4.88

620

kHz

PFD = 20 MHz

Deviation Frequency Resolution

100

PFD = 3.625 MHz

Gaussian Filter BT

0.5

Adjacent Channel Power, GFSK

TBD

dBc

Channel spacing = 25 kHz, measured in

adjacent channel ± 8.5 kHz from center;

DR = 4.8 kbps, FDEV = 2.4 kHz,

FRF = 868 MHz

−50

dBc

868.95 MHz ± 250 kHz, DR = 38.4 kbps,

FDEV = 19.2 kHz

Amplitude Shift Keying

ASK Modulation Depth

OOK –PA Off Feedthrough

−50

dBm

Transmit Power4

−20

+13

dBm

FRF = 915 MHz, VDD = 3.0 V, TA = 25°C

TBD

dBm

FRF = 868 MHz, VDD = 3.0 V, TA = 25°C

TBD

dBm

FRF = 433 MHz, VDD = 3.0 V, TA = 25°C

Transmit Power Variation

Highest Power Setting

TBD

dBm

FRF = 915 MHz, VDD = 3.6 V

dBm

FRF = 915 MHz, VDD = 3.0 V

TBD

dBm

FRF = 915 MHz, VDD = 2.3 V

Transmit Power Flatness

TBD

From 902 MHz to 928 MHz

Programmable Step Size

−20 dBm to +13 dBm

0.3125

Spurious Emissions during PLL Settling

−57

dBm

Mute PA until lock enabled (R2_DB5 =1 )

Integer Boundary

−55

dBc

50 kHz loop BW

Reference

−65

dBc

Harmonics

Second Harmonic

−27

−18

dBc

Third Harmonic

−21

−18

dBc

All Other Harmonics

−35

dBc

VCO Frequency Pulling, OOK mod

TBD

kHz rms

DR = 9.6 kbps

Optimum PA Load Impedance5

TBD

Ω

FRF = 915 MHz

TBD

Ω

FRF = 868 MHz

TBD

Ω

FRF = 433 MHz

RECEIVER PARAMETERS

FSK Input Sensitivity6

At BER = 1E − 3, FRF = 915 MHz

High Sensitivity Mode

−117.5

dBm

DR = 1 kbps, FDEV = 5 kHz

Low Current Mode

−TBD

dBm

DR = 1 kbps, FDEV = 5 kHz

See notes at end of table.

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