MAX2371ETC+T Maxim Integrated Products, MAX2371ETC+T Datasheet

MAX2371ETC+T

Manufacturer Part Number

MAX2371ETC+T

Description

RF Amplifier IC LNA W/ATTEN AND VGA-EP

Manufacturer

Maxim Integrated Products

Datasheet

1.MAX2373ETC.pdf (10 pages)

Specifications of MAX2371ETC+T

Operating Frequency

100 MHz to 1 GHz

P1db

19.5 dBm

Noise Figure

1.8 dB

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

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The MAX2371/MAX2373 wideband low-noise amplifier

(LNA) ICs are designed for direct conversion receiver

(DCR) or very low intermediate frequency (VLIF) receiver

applications. They contain single-channel, single-ended

LNAs with switchable attenuator and automatic gain con-

trol (AGC) intended as a low-noise gain stage. These

devices provide high gain-control range (typically 60dB)

at radio frequency (RF) with excellent noise and reverse

isolation characteristics.

The MAX2371/MAX2373 can work over the frequency

range from 100MHz to 1GHz. In practice, only a narrow

band is needed in each application, so different matching

circuits can be applied. The devices are dynamically con-

figured through the digital/analog control pins to select

either maximum gain and low noise figure or power-saving

mode. In addition, the MAX2371/MAX2373 feature

high/low-current modes, high/low attenuation modes, lin-

early controlled gain states, and shutdown mode.

19-2301; Rev 1; 10/06

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

Direct Conversion Receiver (DCR)

Very Low IF Receiver

LNA_IN

TOP VIEW

LNA_E

RX_EN

________________________________________________________________ Maxim Integrated Products

RF_ATTN

GND

QFN/TQFN

General Description

MAX2371

MAX2373

RF_V

AGC

Pin Configuration

LNAs with Step Attenuator and VGA

LNA_I

RSET

Applications

AGC_BYP

LNA_V

LNA_OUT

♦ Low Noise Figure (1.8dB typical)

♦ High Small-Signal Gain (15dB Nominal)

♦ Wide Frequency Range of Operation

♦ 20dB Step Attenuator

♦ 45dB AGC Range Excluding Step Attenuator

♦ 2.65V to 3.3V Single-Supply Operation

♦ Shutdown Mode

♦ 3.5mA Supply Current, Adjustable Down to 2.5mA

♦ 40dB Reverse Isolation

*EP = Exposed pad.

+Denotes lead-free package.

MAX2371EGC

MAX2371ETC

MAX2371ETC+ -40°C to +85°C

MAX2373EGC

MAX2373ETC

MAX2373ETC+ -40°C to +85°C

LNA_IN

LNA_E

RX_EN

(100MHz to 1GHz)

PART

ATTENUATOR

RF_ATTN

GND

-40°C to +85°C

TEMP RANGE

Ordering Information

EXPONENTIAL

CONVERTER

RF_V

Functional Diagram

LNA

AGC

MAX2371

MAX2373

12 QFN-EP*

12 TQFN-EP*

12 QFN-EP*

12 TQFN-EP*

PIN-

PACKAGE

AGC

AMP

RSET

LNA_I

Features

G1233-1

T1233+3

G1233-1

T1233+3

T1233-3

CODE

PKG

AGC_BYP

LNA_V

LNA_OUT

Related parts for MAX2371ETC+T

MAX2371ETC+T Summary of contents

Page 1

... RF_ATTN AGC LNA_I QFN/TQFN ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. ♦ Low Noise Figure (1.8dB typical) ♦ High Small-Signal Gain (15dB Nominal) ♦ Wide Frequency Range of Operation (100MHz to 1GHz) ♦ ...

Page 2

LNAs with Step Attenuator and VGA ABSOLUTE MAXIMUM RATINGS V to GND ...........................................................-0.3V to +3.6V CC All Pins Excluding Grounds to Pin GND.....-0. LNA Input Power (RX_EN = low) ........................................5dBm Continuous Power Dissipation (T = +70°C) A 12-Pin ...

Page 3

LNAs with Step Attenuator and VGA AC ELECTRICAL CHARACTERISTICS (continued) (MAX2371/MAX2373 EV Kits 2.65V to 3.3V, RX_EN = high 2.775V; for MAX2371 f = 150MHz, for MAX2373 f RF PARAMETER SSB Noise Figure vs. AGC Input ...

Page 4

LNAs with Step Attenuator and VGA (MAX2371/MAX2373 EV Kits 2.775V, RX_EN = high for MAX2373 900MHz, unless otherwise noted.) RF GAIN vs. FREQUENCY 20 RF_ATTN = LOW +85° ...

Page 5

LNAs with Step Attenuator and VGA (MAX2371/MAX2373 EV Kits 2.775V, RX_EN = high for MAX2373 900MHz, unless otherwise noted.) RF GAIN vs. FREQUENCY 20 RF_ATTN = LOW -40° ...

Page 6

LNAs with Step Attenuator and VGA Table 1. MAX2371 S-Parameters (V = 2.775V, RX_EN = high, LNA_I = high, RF_ATTN = low LNA (S11) FREQUENCY (MHz) MAGNITUDE PHASE 10 0.943409 -4.8477 100 0.746965 -29.9420 150 0.728794 -35.6990 200 ...

Page 7

LNAs with Step Attenuator and VGA Table 2. MAX2373 S-Parameters (V = 2.775V, RX_EN = high, LNA_I = high, RF_ATTN = low LNA (S11) FREQUENCY (MHz) MAGNITUDE PHASE 10 0.952248 -0.8171 100 0.933405 -9.1461 200 0.884179 -16.6570 300 ...

Page 8

LNAs with Step Attenuator and VGA Table 4. MAX2373 Typical Noise Parameters (V = 2.775V, RX_EN = high, LNA_I = high, RF_ATTN = low FREQUENCY (MHz) NF MIN 850 1.06 870 1.08 890 1.10 910 1.11 930 1.13 ...

Page 9

LNAs with Step Attenuator and VGA The MAX2371/MAX2373 can be turned off in transmit or battery-save standby mode. The receive-enable pin (RX_EN) also can turn off the devices even if V removed, because multiple LNAs can be connected to the ...

Page 10

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. _____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2006 Maxim Integrated Products ...

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