MAX2511EVKIT【PDF 1/16 页】EVAL KIT MAX2511

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19-1209; Rev 0; 10/97

ATION

EVALU

AVAILA

KIT

B LE

Low-Voltage IF Transceiver

with Limiter and RSSI

_______________General Description

The MAX2511 is a complete, highly integrated IF trans-

ceiver for applications employing a dual-conversion

architecture. Alternatively, the MAX2511 can be used

as a single-conversion transceiver if the RF operating

frequency ranges from 200MHz to 440MHz.

In a typical application, the receiver downconverts a

high IF/RF (200MHz to 440MHz) to a 10.7MHz low IF

using an image-reject mixer. Functions include an

image-reject downconverter with 34dB of image sup-

pression followed by an IF buffer that can drive an off-

chip IF filter; an on-chip limiting amplifier offering 90dB

of monotonic received-signal-strength indication (RSSI);

and a robust limiter output driver. The transmit image-

reject mixer generates a clean output spectrum to mini-

mize filter requirements. It is followed by a 40dB

variable-gain amplifier that maintains IM3 levels below

-35dBc. Maximum output power is 2dBm. A VCO and

oscillator buffer for driving an external prescaler are

also included.

The MAX2511 operates from a 2.7V to 5.5V supply and

includes flexible power-management control. Supply

current is reduced to 0.1μA in shutdown mode.

____________________________Features

o Single +2.7V to +5.5V Supply

o Complete Receive Path:

200MHz to 440MHz (first IF) to

8MHz to 13MHz (second IF)

o Limiter with Differential Outputs (adjustable level)

o RSSI Function with 90dB Monotonic Dynamic

Range

o Complete Transmit Path:

8MHz to 13MHz (second IF) to

200MHz to 440MHz (first IF)

o On-Chip Oscillator with Voltage Regulator

and Buffer

o Advanced System Power Management

(four modes)

o 0.1μA Shutdown Supply Current

______________Ordering Information

For applications using in-phase (I) and quadrature (Q)

baseband architecture for the transmitter, Maxim offers

PART

MAX2511EEI

TEMP. RANGE

-40°C to +85°C

PIN-PACKAGE

28 QSOP

a corresponding transceiver product: the MAX2510.

The MAX2510 has features similar to those of the

MAX2511, but upconverts I/Q baseband signals using

__________________Pin Configuration

a quadrature upconverter.

TOP VIEW

________________________Applications

PWT1900 Wireless Handsets and

Base Stations

LIMIN

28 VREF

27 MIXOUT

26 GND

PACS, PHS, DECT and Other PCS

Wireless Handsets and Base Stations

400MHz ISM Transceivers

RSSI

TANK

MAX2511

RXIN

TXOUT

IF Transceivers

Wireless Data Links

GND

V CC

TANK

22 RXIN

21 V CC

20 GND

GND 10

V CC 11

OSCOUT 12

LIMOUT 13

V CC

TXEN

RXEN

TXIN

Typical Operating Circuit appears at end of data sheet.

LIMOUT 14

TXIN

QSOP

________________________________________________________________ Maxim Integrated Products

For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.

For small orders, phone 408-737-7600 ext. 3468.

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