2.3GHz to 2.7GHz Wireless

Broadband RF Transceiver

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7

AC ELECTRICAL CHARACTERISTICS—FREQUENCY SYNTHESIS

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

FREQUENCY SYNTHESIZER

RF Channel Center Frequency

2.3

2.7

GHz

Channel Center Frequency

Programming Minimum Step Size

20

Hz

Charge-Pump Comparison

Frequency

11

40

MHz

Reference Frequency Range

11

40

80

MHz

Reference Frequency Input

Levels

AC-coupled to XTAL2 pin

800

Resistance (XTAL2 pin)

10

k

Reference Frequency Input

Impedance (R || C)

Capacitance (XTAL2 pin)

1

pF

Programmable Reference Divider

Values

1

2

4

Closed-Loop Integrated Phase

Noise

Loop BW = 120kHz; integrate phase noise from 200Hz

to 5MHz, charge-pump comparison frequency = 40MHz

-39

dBc

Charge-Pump Output Current

On each differential side

1.6

mA

-40

-70

Close-In Spur Level

-80

dBc

Reference Spur Level

-85

dBc

Turnaround LO Frequency Error

Relative to steady state; measured 35μs after Tx-Rx or

Rx-Tx switching instant, and 4μs after any receiver

gain changes

±50

Hz

Temperature Range over Which

VCO Maintains Lock

VCO lock temperature range is within operating

temperature range

°C

Reference Output Clock Divider

Values

1

2

Output Clock Drive Level

20MHz output, 1x drive setting

1.5

Resistance

10

k

Output Clock Minimum Load

Impedance (R || C)

Capacitance

2

pF