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

and Rx/Tx/Antenna Diversity Switch

6

_______________________________________________________________________________________

AC ELECTRICAL CHARACTERISTICS—Tx Mode

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

baseband 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

54Mbps 802.11g OFDM

signal

Output power adjusted to

meet 5.6%EVM, and

spectral mask

17.1

Output Power

6Mbits, OFDM, I/Q signals

Output power adjusted to

meet spectral mask

20.3

dBm

Gain Control Range

B6:B1 = 000000 to 111000

26

dB

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

-67

< 1GHz

-36

> 1GHz

-47

-64

-42

-65

-55

-27

Transmitter Spurious Signal

Emissions

B6:B1 = 111000,

OFDM signal

-54

dBm/

MHz

RF Output Return Loss

Off-chip balun and single ended

-15

dB

Minimum differential resistance

20

k

Ω

Tx I/Q Input Load Impedance

(R || C)

Maximum differential capacitance

0.7

pF

Baseband -3dB Corner

Frequency

D1:D0 = 01, Register 8

(A3:A0 = 1000)

Nominal mode

11

MHz

Baseband Filter Rejection

At 30MHz, in nominal mode

62

dB

Minimum Power-Detector Output

Voltage

Short sequence transmitter power = +10dBm

0.35

V

Maximum Power-Detector Output

Voltage

Short sequence transmitter power = +20dBm

1.2

V

RF Power-Detector Response Time

0.3

µs