MAX2745 datasheet(2/9 Pages) MAXIM

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Single-Chip Global Positioning System

Receiver Front-End

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ABSOLUTE MAXIMUM RATINGS

DC ELECTRICAL CHARACTERISTICS

(MAX2745 EV kit, VDD = +2.4V to +3.6V, SHDN = GND, TA = -40°C to +85°C. Typical values are at VDD = +3.0V and TA = +25°C,

unless otherwise noted.)

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional

operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to

absolute maximum rating conditions for extended periods may affect device reliability.

VDD to GND ...........................................................-0.3V to +3.7V

Other Pins to GND......................................-0.3V to (VDD + 0.3V)

RF LNA Input Power .......................................................+10dBm

Continuous Power Dissipation (TA = +70°C)

48-Pin TQFP-EP (derate 12.5mW/°C above +70°C) ............1W

Operating Temperature Range ...........................-40°C to +85°C

Junction Temperature ......................................................+150°C

Storage Temperature Range .............................-65°C to +150°C

Soldering Temperature (10s) ...........................................+300°C

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Supply Voltage

2.4

3.6

VDD = +3.0V, TA = +25°C (Note 1)

20.5

Supply Current

Shutdown mode

µA

Optional External LNA Supply

Current

VDD = +3.0V

Logic-Input High Voltage

2.0

Logic-Input Low Voltage

0.5

Logic-Input Bias Current

-10

+10

µA

CAUTION! ESD SENSITIVE DEVICE

AC ELECTRICAL CHARACTERISTICS

(MAX2745 EV kit, VDD = +2.4V to +3.6V, SHDN = GND, TA = -40°C to +85°C. Typical values are at VDD = +3.0V and TA = +25°C,

unless otherwise noted.)

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

GENERAL PERFORMANCE

Maximum Conversion Gain

(Notes 2, 3)

105

120

Input Frequency

1575.42

MHz

Noise Figure

Measured at quantizer output

3.5

Return Loss (S11)

-14

LNA/Mixer Input IP3

f1 = 5.09MHz and f2 = 7.09MHz above carrier frequency

-25

dBm

Output IF Frequency

4.092

MHz

OUTPUT STAGE

Differential (VOUT+, VOUT-), CL < 20pF

Output Rise/Fall Time

Single ended (DOUT), CL<20pF

Differential

VDD - 0.9

Output-Voltage-Level Low

Single ended

Differential

Output-Voltage-Level High

Single ended

VDD

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