Maxim RRFP1A/T Manual de usuario descargar pdf (Pagina 21)

Single-/Dual-Band 802.11a/b/g

World-Band Transceiver ICs

Typical Operating Characteristics (continued)

= 2.7V, f

= 2.437GHz (802.11g) or f

= 5.25GHz (802.11a), f

REFOSC

= 40MHz, SHDN = CS = high, RXHP = SCLK = DIN =

low, R

BIAS

= 11kΩ, T

= +25°C using the MAX2828/MAX2829 evaluation kits.)

802.11a

-40

-30

-35

-10

-5

-20

OUT

(dBm)

-25

-15

0 8 16 24 32 40 48 64

GAIN SETTINGS

TX OUTPUT POWER

vs. GAIN SETTINGS

MAX2828/9 toc52

LO FREQUENCY vs. V

TUNE

MAX2828/29 toc53

TUNE

(V)

LO FREQUENCY (MHz)

2.01.81.4 1.60.8 1.0 1.20.6

4600

4800

5000

5200

5400

5600

5800

6000

6200

4400

0.4 2.2

HIGH-BAND VCO

D10:D9 = 11

LOW-BAND VCO

0250

CHANNEL-SWITCHING FREQUENCY SETTLING

(5.35GHz TO 5.15GHz)

MAX2828/9 toc55

(kHz)

TIME (µs)

-40

-30

-20

-10

-50

0250

CHANNEL-SWITCHING FREQUENCY SETTLING

(5.875GHz TO 4.9GHz)

MAX2828/9 toc56

(kHz)

TIME (µs)

-40

-30

-20

-10

-50

TX-RX TURNAROUND

FREQUENCY SETTLING

MAX2828/9 toc57

25kHz

-25kHz

5kHz/div

050

TIME (µs)

1.7

2.1

1.9

EVM (%)

2.3

2.0

1.8

2.2

2.4

-35 -30 -25 -20 0

OUT

(dBm)

-10-15 -5

TX EVM

vs. P

OUT

MAX2828/9 toc58

1k 10k 100k 1M 10M

CLOSED-LOOP PHASE NOISE

MAX2828/9 toc54

FREQUENCY OFFSET (Hz)

(dBm)

-140

-130

-120

-110

-100

-90

-80

-70

-60

-50

-150

-110

-40

-70

-90

-100

-20

-50

-30

-60

-80

-10

5.21GHz

(dBm/100kHz)

5.29GHz

TX OUTPUT SPECTRUM

(54Mbps OFDM SIGNAL)

MAX2828/9 toc50

B6:B1 = 111100

-40

-70

-90

-100

-20

-50

-30

-60

-80

-10

1MHz 26.5GHz

TX OUTPUT SPECTRUM

MAX2828/9 toc51

f = 8.2GHz

f = 7.2GHz

f = 6.2GHz

f = 5.2GHz

(dBm)

MAX2828/MAX2829

Maxim Integrated

1 2 ... 16 17 18 19 20 21 22 23 24 25 26 ... 38 39

MAX2828/MAX2829 1

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Maxim RRFP1A/T Manual de usuario Pagina 21

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