ADF7021-NDF View Datasheet(PDF) - Analog Devices

Part Name

Description

Manufacturer

ADF7021-NDF

High Performance Narrow-Band Transceiver IC

Analog Devices 

ADF7021-N

TYPICAL PERFORMANCE CHARACTERISTICS

–70

–80

–90

–100

ICP = 0.8mA

RF FREQ = 900MHz

VDD = 2.3V

TEMPERATURE = 25°C

VCO_BIAS = 8

VCO_ADJUST = 3

ICP = 1.4mA

–110

–120

ICP = 2.2mA

–130

–140

–150

1

10

100

1000

10000

FREQUENCY OFFSET (kHz)

Figure 11. Phase Noise Response at 900 MHz, VDD = 2.3 V

16

12

8

4

0

–4

–8

–12

–16

–20

–24

–28

–32

–36

–40

0

PA_BIAS = 11µA

PA_BIAS = 9µA

PA_BIAS = 5µA

PA_BIAS = 7µA

4 8 12 16 20 24 28 32 36 40 44 48 52 56 60

PA SETTING

Figure 12. RF Output Power vs. PA Setting

1R

RF FREQ = 440MHz

OUTPUT POWER = 10dBm

FILTER = T-STAGE LC FILTER

MARKER Δ = 52.2dB

GFSK

DR = 9.6kbps

DATA = PRBS9

fDEV = 2.4kHz

RF FREQ = 869.5MHz

2FSK

CENTER 869.5 25MHz

SPAN 50kHz

RES BW 300Hz

VBW 300Hz SWEEP 2.118s (601pts)

Figure 14. Output Spectrum in 2FSK and GFSK Modes

DR = 9.6kbps

DATA = PRBS9

fDEV = 2.4kHz

RF FREQ = 869.5MHz

2FSK

RC2FSK

CENTER 869.5 25MHz

RES BW 300Hz

SPAN 50kHz

VBW 300Hz SWEEP 2.118s (601pts)

Figure 15. Output Spectrum in 2FSK and Raised Cosine 2FSK Modes

SR = 4.8ksym/s

DATA = PRBS9

fDEV = 2.4kHz

RF FREQ = 869.5MHz

1

4FSK

START 300MHz

RES BW 100Hz

STOP 3.5GHz

VBW 100Hz SWEEP 385.8ms (601pts)

Figure 13. PA Output Harmonic Response with T-Stage LC Filter

RC4FSK

CENTER 869.493 8MHz

SPAN 100kHz

RES BW 300Hz

VBW 300Hz SWEEP 4.237s (601pts)

Figure 16. Output Spectrum in 4FSK and Raised Cosine 4FSK Modes

Rev. 0 | Page 18 of 64

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