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

and Rx/Tx/Antenna Diversity Switch

4

_______________________________________________________________________________________

AC ELECTRICAL CHARACTERISTICS—Rx Mode (continued)

RF pins using the typical applications and registers set to default settings and corresponding test mode, unless otherwise noted.

Unmodulated single-tone RF input signal is used with specifications that normally apply over the entire operating conditions, unless

otherwise indicated. 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

From high-gain mode (B7:B6 = 11) to medium-gain

mode (B7:B6 = 10)

-17

RF Gain Steps (Note 3)

From high-gain mode (B7:B6 = 11) to low-gain mode

(B7:B6 = 0X)

-33.5

dB

RF Gain-Change Settling Time

Gain change from high gain to medium gain, high gain to

low, or medium gain to low gain; gain settling to within

±2dB of steady state; RXHP = 1

0.2

µs

Baseband Gain Range

From maximum baseband gain (B5:B1 = 11111) to

minimum baseband gain (B5:B1 = 00000)

54

62

68

dB

Voltage gain = maximum with B7:B6 = 11

3.3

Voltage gain = 50dB with B7:B6 = 11

3.8

Voltage gain = 45dB with B7:B6 = 10

16.7

DSB Noise Figure (ANT1)

Voltage gain = 15dB with B7:B6 = 0X

34.7

dB

Voltage gain = maximum with B7:B6 = 11

4.0

Voltage gain = 50dB with B7:B6 = 11

4.5

Voltage gain = 45dB with B7:B6 = 10

17.4

DSB Noise Figure (ANT2)

Voltage gain = 15dB with B7:B6 = 0X

35.3

dB

B7:B6 = 11

-41

B7:B6 = 10

-24

In-Band Compression Point

Based on EVM

output EVM degrades to

9%

B7:B6 = 0X

-6

dBm

In-Band Output P-1dB

Voltage gain = 90dB, with B7:B6 = 11

2.5

B7:B6 = 11

-12

B7:B6 = 10

-4

Out-of-Band Input IP3 (Note 4)

B7:B6 = 0X

24

dBm

I/Q Phase Error

1

σ variation (without calibration)

±0.35

Degrees

I/Q Gain Imbalance

1

σ variation (without calibration)

±0.1

dB

Minimum differential resistance

10

k

Ω

RX I/Q Output Load Impedance

(R || C)

Maximum differential capacitance

10

pF

Tx-to-Rx Conversion Gain for Rx

I/Q Calibration

For receiver gain, B7:B1 = 1101111 (Note 5)

0.5

dB

Baseband VGA Settling Time

Gain change from B5:B1 = 10111 to B5:B1 = 00111; gain

settling to within ±2dB of steady state

0.1

µs

I/Q Output DC Step when RXHP

Transitions from 1 to 0 in

Presence of 802.11g Short

Sequence

After switching RXHP to logic 0 from initial logic 1, during

ideal short sequence data at -55dBm input in AWGN

channel, for -19dBV output; normalized to RMS signal on

I and Q outputs; transition point varied from 0 to 0.8µs in

steps of 0.1µs

-5

dBc