MAX2742 데이터 시트보기 (PDF) - Maxim Integrated

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MAX2742

Single-Chip Global Positioning System Receiver Front-End

Maxim Integrated 

Single-Chip Global Positioning System

Receiver Front-End

AC ELECTRICAL CHARACTERISTICS (continued)

(MAX2742 EV kit, VDD = +2.4V to +3.6V, VSHDN = VDD, TA = -40°C to +85°C. Typical values are at VDD = +3V and TA = +25°C,

unless otherwise noted.)

PARAMETER

SYNTHESIZER

TCXO Input Frequency

Charge-Pump Current

Phase Noise

Comparison Frequency Spur

VCO Turning Range

VCO Tuning Gain

IF STAGE

IF Stage Gain

Dynamic Range IF Stage Gain

Bandpass Filter 1dB Corner

Frequency

CONDITIONS

Fundamental frequency crystal

fOFFSET = 10kHz offset, BWLOOP = 70kHz

fOFFSET = 1MHz offset, BWLOOP = 70kHz

BWLOOP = 70kHz

(Notes 2, 3)

(Notes 2, 3)

VGA set at maximum gain

Low-frequency corner

High-frequency corner

MIN TYP MAX UNITS

18.414

MHz

0.4

mA

-71

-106

dBc/Hz

-66

dBc

148 210

277

MHz

139 200

305 MHz/V

77

dB

50

dB

0.1

MHz

3.2

Bandpass Filter 60dB High-Side

Rejection

5.0

MHz

Image Rejection

In-Band Ripple

AGC Loop Lock Time

18

dB

1

dB

1

ms

Note 1: At TA = +25°C, min/max limits are guaranteed by production test.

Note 2: At TA = -40°C, min/max limits are guaranteed by design and characterization.

Note 3: At TA = +25°C and +85°C, min/max limits are guaranteed by production test.

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