MAX2837 Просмотр технического описания (PDF) - Maxim Integrated

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производитель

MAX2837

2.3GHz to 2.7GHz Wireless Broadband RF Transceiver

Maxim Integrated 

MAX2837

2.3GHz to 2.7GHz Wireless

Broadband RF Transceiver

AC Electrical Characteristics—Frequency Synthesis

(MAX2837 evaluation kit: VCC_ = 2.8V, fLO = 2.5GHz, fREF = 40MHz, ENABLE = CS = high, SCLK = DIN = low, PLL loop bandwidth

= 120kHz, TA = +25°C, unless otherwise noted.) (Note 1)

PARAMETER

FREQUENCY SYNTHESIZER

RF Channel Center Frequency

CONDITIONS

Channel Center Frequency

Programming Minimum Step Size

Charge-Pump Comparison

Frequency

Reference Frequency Range

Reference Frequency Input

Levels

AC-coupled to XTAL2 pin

MIN TYP MAX UNITS

2.3

2.7 GHz

20

Hz

11

40

11

40

800

MHz

80

MHz

mVP-P

Reference Frequency Input

Impedance (R || C)

Resistance (XTAL2 pin)

Capacitance (XTAL2 pin)

10

kΩ

1

pF

Programmable Reference Divider

Values

Closed-Loop Integrated Phase

Noise

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

5MHz, charge-pump comparison frequency = 40MHz

Charge-Pump Output Current

Close-In Spur Level

Reference Spur Level

On each differential side

fOFFSET = 0 to 1.8MHz

fOFFSET = 1.8MHz to 7MHz

fOFFSET > 7MHz

1

2

4

-39

1.6

-40

-70

-80

-85

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

Turnaround LO Frequency Error Rx-Tx switching instant, and 4µs after any receiver gain

±50

changes

Temperature Range over Which

VCO Maintains Lock

Relative to the ambient temperature TA, as long as the VCO

lock temperature range is within operating temperature

range

TA ±40

Reference Output Clock Divider

Values

Output Clock Drive Level

Output Clock Minimum Load

Impedance (R || C)

20MHz output, 1x drive setting

Resistance

Capacitance

1

2

1.5

10

2

dBc

mA

dBc

dBc

Hz

°C

VP-P

kΩ

pF

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