MAX2832 datasheet(6/34 Pages) MAXIM

6 / 34 page

2.4GHz to 2.5GHz 802.11g/b

RF Transceivers with Integrated PA

_______________________________________________________________________________________

AC ELECTRICAL CHARACTERISTICS—Tx Mode

(MAX2831 EV kit: VCC_ = 2.8V, VCCPA = VCCTXPA = 3.3V, TA = +25°C, fRF = 2.439GHz , fLO = 2.437GHz. fREF = 40MHz, SHDN =

RXTX = CS = high, and SCLK = DIN = low, with power matching for the differential RF pins using the typical applications circuit.

100mVRMS sine and cosine signal (or 100mVRMS 54Mbps IEEE 802.11g I/Q signals wherever OFDM is mentioned) applied to base-

band I/Q inputs of transmitter (differential DC-coupled). Registers set to recommend settings and corresponding test mode, unless

otherwise noted. RF inputs/outputs specifications are referenced to device pins and do not include 1dB loss from EV kit PCB, balun,

and SMA connectors.) (Note 1)

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

TRANSMIT SECTION: Tx BASEBAND I/Q INPUTS TO RF OUTPUTS

RF Output Frequency Range

2.4

2.5

GHz

Output power adjusted

to meet 5.6% EVM,

and spectral mask

18.5

54Mbps 802.11g

OFDM signal

B6:B1 = 000000

-7.5

MAX2831

802.11b signal,

141mVRMS,

IEEE802.11b I/Q

signals

Output power adjusted

to meet spectral mask

-3dB VGA back off

-5.3

Output Power

MAX2832

B6:B1 = 000000

-31.5

dBm

Unwanted Sideband Suppression

Without I/Q calibration, B6:B1 = 100001

-42

dBc

Carrier Leakage at Center

Frequency of Channel

Without DC offset correction

-30

dBc

1/3 x fLO

-67

< 1GHz

-36

> 1GHz

-47

2/3 x fLO

-64

4/3 x fLO

-42

5/3 x fLO

-65

8/3 x fLO

-51

2 x fLO

-33

Transmitter Spurious Signal

Emissions (MAX2831)

B6:B1 = 111000,

OFDM signal

3 x fLO

-54

dBm/

MHz

1/3 x fLO

-78

< 1GHz

-65

> 1GHz

-72

2/3 x fLO

-78

4/3 x fLO

-46

5/3 x fLO

-72

8/3 x fLO

-46

2 x fLO

-60

Transmitter Spurious Signal

Emissions (MAX2832)

B6:B1 = 111111,

OFDM signal

3 x fLO

-75

dBm/

MHz

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