MAX2741(2005) Просмотр технического описания (PDF) - Maxim Integrated

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производитель

MAX2741
(Rev.:2005)

Integrated L1-Band GPS Receiver

Maxim Integrated 

Integrated L1-Band GPS Receiver

VCC1 1

N.C.

2

RFIN

3

VCC2 4

VCC3 5

VCC4 6

GND

7

28 27 26 25 24 23 22

MAX2741

SDO

21

N.C.

20

19 VCC5

GPSIF0

18

GPSIF1

17

GPSIF2

16

GPSCLK

15

8 9 10 11 12 13 14

Typical Interface Diagram

BASEBAND IC

SDO

SD1

CS

SCLK

GPSIF0

GPSIF1

GPSIF2

GPSCLK

REFCLK

Interface Summary

All I/O connections are DC-coupled. Supply voltages as specified in the electrical specifications.

I/O CONNECTION

RFIN

I/O CONNECTION

IFOUT+

IFOUT-

IFIN+

IFIN-

I/O CONNECTION

SCLK

CS

SDI

SDO

SHDN

GPSCLK

GPSIF0

GPSIF1

GPSIF2

I/O CONNECTION

FILT

XTAL

REFCLK

RF

RECEIVER

LNA Input

IF

RECEIVER

1st IF Output from Mixer (+)

1st IF Output from Mixer (-)

1st IF Input (+)

1st IF Input (-)

BASEBAND

RECEIVER

CMOS Input

CMOS Input

CMOS Input

CMOS Output

CMOS Input

CMOS Output

CMOS Output

CMOS Output

CMOS Output

SYNTHESIZER

RECEIVER

PLL Phase-Detector Charge-Pump

Crystal Oscillator Feedback

External TCXO or Crystal

RF BPF Output

RF BPF

IF FILTER

IF BPF Input, 2.5kΩ Differential

IF BPF Input, 2.5kΩ Differential

IF BPF Input, 2.5kΩ Differential

IF BPF Input, 2.5kΩ Differential

CMOS Output

CMOS Output

CMOS Output

CMOS Input

CMOS Output

CMOS Input

CMOS Input

CMOS Input

CMOS Input

BB IC/MAC

EXTERNAL COMPONENTS

PLL Loop Filter

Feedback Capacitors

Analog (also connected to REFCLK input to MAC)

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