MAX2371ETC+ datasheet(3/10 Pages) MAXIM

Part #	MAX2371ETC+

Description	LNAs with Step Attenuator and VGA

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Manufacturer	MAXIM [Maxim Integrated Products]

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LNAs with Step Attenuator and VGA

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3

AC ELECTRICAL CHARACTERISTICS (continued)

(MAX2371/MAX2373 EV Kits, VCC = 2.65V to 3.3V, RX_EN = high, RSET = 1.1k

Ω, TA = -40°C to +85°C. Typical values are at VCC =

2.775V; for MAX2371 fRF = 150MHz, for MAX2373 fRF = 850MHz to 940MHz; TA = +25°C, unless otherwise noted.) (Note 1)

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

VAGC = 1.275V

1.8

2.2

VAGC = 1.575V

5.0

7.7

VAGC = 1.875V

11

14.5

LNA_I = high, TA =

+25°C, VCC = 2.775V,

RF_ATTN = low

VAGC = 2.175V

20

SSB Noise Figure vs. AGC

LNA_I = low, TA =

+25°C, VCC = 2.775V,

RF_ATTN = low

VAGC = 1.275V

2.1

2.6

dB

LNA_I = high

-21.5

19.5

RF_ATTN = low,

VAGC < 1.8V

LNA_I = low

-24

-22

LNA_I = high

-3

0

Input 1dB Compression Point

RF_ATTN = high,

VAGC < 1.8V

LNA_I = low

-9

-6.5

dBm

LNA_I = high

-5

-1

MAX2371

-7

-4

RF_ATTN = low,

VAGC = VCC/2

LNA_I = low

MAX2373

-12

-9

dBm

Input IP3 (Notes 4, 5)

RF_ATTN = high,

VAGC = VCC/2 to 2.575V

LNA_I = high

9

13

dBm

MAX2371

-10.5

-8

Input IP3 Over AGC Range

RF_ATTN = low, LNA_I = high,

VAGC = VCC/2 to 1.80V

MAX2373

-12.5

-10.5

dBm

AGC RESPONSE

AGC Attenuation Range (Note 6)

VCC = 2.775V, RF_ATTN = low, VAGC = 1.3375V

to 2.575V, TA = +25°C

35

45

dB

RF_ATTN = low, VAGC = 1.625V

32

40

47

AGC Slope Over Control Range

RF_ATTN = high, VAGC = 1.625V

24

33

41

dB/V

RF STEP ATTENUATOR

MAX2371

16.0

17.5

19.0

Gain Step

RF_ATTN = high to low,

LNA_I = high

MAX2373

18.0

19.5

21.0

dB

Note 1: Parameters over temperature and supply voltage range are guaranteed by design and characterization, unless otherwise noted.

Note 2: Operation outside these frequency bands is possible but has not been characterized. See Typical Operating Characteristics.

Note 3: Measured with external matching network.

Note 4: fIN1 = 150MHz, fIN2 = 150.1MHz, PIN = -30dBm for both tones (MAX2371).

Note 5: fIN1 = 900MHz, fIN2 = 900.1MHz, PIN = -30dBm for both tones (MAX2373).

Note 6: Parameters are guaranteed by production test.

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