MAX2741 查看數據表（PDF） - Maxim Integrated

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MAX2741

Integrated L1-Band GPS Receiver

Maxim Integrated 

MAX2741

Integrated L1-Band GPS Receiver

Absolute Maximum Ratings

VCC Pins to GND..................................................-0.3V to +3.3V

VCC Pins to Each Other........................................-0.3V to +0.3V

FILT to GND.............................................. -0.3V to (VCC + 0.3V)

CMOS Inputs to GND (SHDN, SCLK,

CS, SDI)............................................... +0.3V to (VCC + 0.3V)

CMOS Outputs to GND (CLKOUT,

GPSIF_, SDO)....................................... -0.3V to (VCC + 0.3V)

RFIN to GND............................................. -0.3V to (VCC + 0.3V)

First IF Filter I/O to GND (IFOUT±, IFIN±)......-0.3V to (VCC + 0.3V)

Crystal Inputs to GND (XTAL, REFCLK).........-0.3V to (VCC + 0.3V)

Maximum RF Input Power...................................................0dBm

Continuous Power Dissipation (TA = +85°C)

28-Pin Thin QFN (derate 20.8mW/°C above +70°C).....1000mW

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

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

Storage Temperature Range............................. -65°C to +160°C

Lead Temperature (soldering, 10s).................................. +300°C

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.

CAUTION! ESD SENSITIVE DEVICE

DC Electrical Characteristics

(Operating conditions (unless otherwise specified): VCC = 2.7V to 3.0V; REFCLK driven with 10MHz sinusoid, 1.2VP-P; registers set

according to mode; no RF input signal; digital baseband outputs left open; TA = -40°C to +85°C. Typical values are measured at VCC =

2.75V, TA = +25°C.)

PARAMETER

Supply Voltage

Supply Current

Input-Logic High Threshold

Input-Logic Low Threshold

Input-Logic High/Low Current

Output-Logic High

Output-Logic Low

CONDITIONS

Normal operation (TA = +25°C)

Standby (VSHDN = VIL, SYNTH:D8 = 0)

ILOAD = 100µA

ILOAD = 100µA

MIN

2.7

VCC -

0.1

-10

VCC -

0.3

TYP

30

0.7

MAX

3.0

42

UNITS

V

mA

V

0.1

V

+10

µA

V

0.3

V

AC Electrical Characteristics

(Operating conditions (unless otherwise specified): VCC = 2.7V to 3.0V for TA = -40°C to +85°C; REFCLK driven at 10MHz sinusoid,

1.2VP-P; registers set according to mode; using the Typical Application Circuit; CW RF signal at 1575.42MHz. Typical values are mea-

sured at VCC = 2.75V, TA = +25°C.)

PARAMETER

CONDITIONS

1st CONVERSION STAGE (RF TO 1st IF)

RF Frequency

L1-band

RF Conversion Gain

(Note 1)

Noise Figure

Mid-gain (CONFIG1:D4–D0 = 10000)

Input IP3

(Note 2)

RF Image Rejection

(Notes 3, 4)

LO Leakage at RF

LO to RFIN pin

MIN TYP MAX UNITS

1575.42

15

21

32

4.7

-30

20

35

-90

MHz

dB

dB

dBm

dB

dBm

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