ADF7021 datasheet(18/64 Pages) AD

18 / 64 page

ADF7021

Data Sheet

Rev. B | Page 18 of 64

TYPICAL PERFORMANCE CHARACTERISTICS

FREQUENCY OFFSET (MHz)

–150

–140

–130

–120

–110

–100

–90

–80

–70

100

1000

10000

RF FREQ = 900MHz

VDD = 2.3V

TEMPERATURE = 25°C

VCO BIAS = 8

VCO ADJUST = 3

ICP = 0.8mA

ICP = 1.4mA

ICP = 2.2mA

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

–40

–36

–32

–28

–24

–20

–16

–12

–8

–4

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

PA SETTING

PA BIAS = 5µA

PA BIAS = 11µA

PA BIAS = 9µA

PA BIAS = 7µA

Figure 12. RF Output Power vs. PA Setting

VBW 100Hz

START 300MHz

RES BW 100Hz

SWEEP 385.8ms (601pts)

STOP 3.5GHz

RF FREQ = 440MHz

OUTPUT POWER = 10dBm

FILTER = T-STAGE LC FILTER

MARKER

Δ = 52.2dB

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

CENTER 869.5 25MHz

RES BW 300Hz

SWEEP 2.118s (601pts)

SPAN 50kHz

DR = 9.6kbps

DATA = PRBS9

fDEV = 2.4kHz

RF FREQ = 869.5MHz

VBW 300Hz

GFSK

FSK

Figure 14. Output Spectrum in 2FSK and GFSK Modes

CENTER 869.5 25MHz

RES BW 300Hz

SWEEP 2.118s (601pts)

VBW 300Hz

SPAN 50kHz

DR = 9.6kbps

DATA = PRBS9

fDEV = 2.4kHz

RF FREQ = 869.5MHz

RC2FSK

2FSK

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

VBW 300Hz

CENTER 869.493 8MHz

RES BW 300Hz

SWEEP 4.237s (601pts)

SPAN 100kHz

SR = 4.8ksym/s

DATA = PRBS9

fDEV = 2.4kHz

RF FREQ = 869.5MHz

RC4FSK

4FSK

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

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