MAX2831ETMT datasheet(8/34 Pages) MAXIM

Part #	MAX2831ETMT

Description	2.4GHz to 2.5GHz 802.11g/b RF Transceivers with Integrated PA

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Manufacturer	MAXIM [Maxim Integrated Products]

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2.4GHz to 2.5GHz 802.11g/b

RF Transceivers with Integrated PA

8

_______________________________________________________________________________________

AC ELECTRICAL CHARACTERISTICS—Frequency Synthesis

(MAX2831 EV kit: VCC_ = 2.7V, VCCPA = VCCTXPA = 3.3V, TA = +25°C, fLO = 2.437GHz, fREF = 40MHz, SHDN = CS = high, SCLK =

DIN = low, PLL loop bandwidth = 150kHz, and TA = +25°C, unless otherwise noted.) (Note 1)

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

FREQUENCY SYNTHESIZER

RF Channel Center Frequency

2.4

2.5

GHz

Channel Center Frequency

Programming Minimum Step Size

20

Hz

Charge-Pump Comparison

Frequency

20

MHz

Reference Frequency Range

20

44

MHz

Reference Frequency Input

Levels

AC-coupled to XTAL pin

800

mVP-P

Resistance (XTAL)

5

k

Ω

Reference Frequency Input

Impedance (R || C)

Capacitance (XTAL)

4

pF

fOFFSET = 1kHz

-86

fOFFSET = 10kHz

-94

fOFFSET = 100kHz

-94

fOFFSET = 1MHz

-110

Closed-Loop Phase Noise

fOFFSET = 10MHz

-120

dBc/Hz

Closed-Loop Integrated Phase

Noise

RMS phase jitter; integrate from 10kHz to 10MHz offset

0.9

Degrees

Charge-Pump Output Current

1mA

Reference Spurs

20MHz offset

-55

dBc

3µs to 9µs

50

VCO Frequency Error

Measured from Tx-Rx or Rx-Tx

transition

> 9µs

1

kHz

VOLTAGE-CONTROLLED OSCILLATOR

Pushing

Referred to 2400MHz LO, VCC varies by 0.3V

210

kHz

VCO Tuning Voltage Range

0.5

2.2

V

VTUNE = 0.5V

103

LO Tuning Gain

VTUNE = 2.2V

86

MHz/V

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MAX2831ETMT Datasheet(PDF) 8 Page - Maxim Integrated Products

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