MAX2385 datasheet(3/18 Pages) MAXIM

Part #	MAX2385

Description	CDMA GPS LNA/Mixers

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Manufacturer	MAXIM [Maxim Integrated Products]

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CDMA + GPS LNA/Mixers

_______________________________________________________________________________________

3

AC ELECTRICAL CHARACTERISTICS

(MAX2385/MAX2386 EV kit, VCC = +2.75V, TA = -40°C to +85°C, fRF = 832MHz to 870MHz (CDMA), fRF = 1575.42MHz (GPS), fIF =

110MHz, fLO = (fRF - fIF) ✕ 2 (CDMA), fLO = 1465.42MHz (GPS), LO input power = -12dBm, 50

Ω RF system impedance, IF matched

to 50

Ω load, RBIAS = 47kΩ, VIH = +2.0V, VIL = +0.6V. Typical values are at fRF = 851MHz, TA = +25°C (CDMA). (Note 3) (Table 1)

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

FREQUENCY RANGE

IF Frequency Range

(Note 4)

70

200

MHz

CDMA mode (Note 5)

832

870

RF Frequency Range

GPS mode

1575.42

MHz

CDMA mode

1260

1482

1600

LO Frequency Range

GPS mode

1300

1465

1600

MHz

LNA PERFORMANCE

TA = +25°C, fRF = 851MHz

13.8

15.0

16.5

HGHL mode

(Note 6)

13.1

HGLL mode

TA = +25°C, fRF = 851MHz

12.4

14.0

15.4

TA = +25°C, fRF = 851MHz

-0.6

0.7

2.0

MG mode

(Note 6)

-1.4

TA = +25°C, fRF = 851MHz

-6.2

-5.3

-4.4

LG/ULG

mode

(Note 6)

-7.1

TA = +25°C, fRF = 1575MHz

16.6

18.5

20.4

GPS mode

(MAX2385)

(Note 6)

14.5

TA = +25°C, fRF = 1575MHz

19.7

20.9

22.1

Gain

GPS mode

(MAX2386)

(Note 6)

16.8

dB

HGHL mode

1.5

1.8

HGLL mode

1.5

1.8

MG mode

3.8

4.7

LG/ULG mode

8.2

9.5

Noise Figure

TA = +25°C

GPS mode

1.7

1.9

dB

HGHL mode

0.5

HGLL mode

0.5

MG mode

0.9

LG/ULG mode

1.0

Noise Figure Change Over

Temperature

(TA = +25°C to +85°C)

GPS mode

0.5

dB

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