MAX2830 데이터 시트보기 (PDF) - Maxim Integrated

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MAX2830

2.4GHz to 2.5GHz 802.11g/b RF Transceiver, PA, and Rx/Tx/Antenna Diversity Switch

Maxim Integrated 

2.4GHz to 2.5GHz 802.11g/b RF Transceiver, PA,

and Rx/Tx/Antenna Diversity Switch

Typical Operating Characteristics (continued)

(MAX2830 EV kit, VCC_ = 2.8V, VCCPA = VCCTXPA = 3.3V, TA = +25°C, fLO = 2.437GHz, fREF = 40MHz, SHDN = CS = high, RXHP =

SCLK = DIN = low.)

LNA INPUT RETURN LOSS

vs. RF FREQUENCY (ANT 2)

-5

LOW GAIN

-10

Rx RSSI OUTPUT vs. INPUT POWER

3.0

LNA = HIGH GAIN

2.5

2.0 LNA = MEDIUM GAIN

Rx RSSI STEP RESPONSE

(+32dB LNA GAIN STEP)

MAX2830 toc11

3V

-15

1.5

0

-20

HIGH GAIN

MID GAIN

-25

2300 2350 2400 2450 2500 2550 2600

RF FREQUENCY (MHz)

1.0

0.5

LNA = LOW GAIN

0

-120 -100 -80 -60 -40 -20 0 20

PIN (dBm)

1.45V

0.45

200ns/div

Rx RSSI STEP RESPONSE

(-32dB LNA GAIN STEP)

MAX2830 toc12

3V

Rx I/Q DC OFFSET SETTLING RESPONSE

(+8dB BB VGA GAIN STEP)

MAX2830 toc13

2.0V

Rx I/Q DC OFFSET SETTLING RESPONSE

(-8dB BB VGA GAIN STEP)

MAX2830 toc14

2.5V

0V

1.5V

0V

200ns/div

Rx I/Q DC OFFSET SETTLING RESPONSE

(-16dB BB VGA GAIN STEP)

MAX2830 toc15

3V

0V

10mV

5mV

0V

40ns/div

0V

10mV

5mV

0mV

40ns/div

Rx I/Q DC OFFSET SETTLING RESPONSE

(-32dB BB VGA GAIN STEP)

MAX2830 toc16

3V

I/Q OUTPUT DC ERROR DROOP

(RxHP = 1→0; 100Hz MODE)

MAX2830 toc17

3V

0V

10mV

5mV

0V

400ns/div

0V

10mV

5mV

0V

400ns/div

0V

0V

-5mV

-10mV

20ms/div

12 ______________________________________________________________________________________

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