Rainbow Electronics MAX7034 User Manual

General description, Features

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.

General Description

The MAX7034 fully integrated low-power CMOS super-
heterodyne receiver is ideal for receiving amplitude-
shift-keyed (ASK) data in the 300MHz to 450MHz
frequency range (including the popular 315MHz and
433.92MHz frequencies). The receiver has an RF sensi-
tivity of -114dBm. With few external components and a
low-current power-down mode, it is ideal for cost-sensi-
tive and power-sensitive applications typical in the
automotive and consumer markets. The MAX7034 con-
sists of a low-noise amplifier (LNA), a fully differential
image-rejection mixer, an on-chip phase-locked loop
(PLL) with integrated voltage-controlled oscillator
(VCO), a 10.7MHz IF limiting amplifier stage with
received-signal-strength indicator (RSSI), and analog
baseband data-recovery circuitry.

The MAX7034 is available in a 28-pin TSSOP package
and is specified over the automotive (-40°C to +125°C)
temperature range.

Features

♦ Optimized for 315MHz or 433.92MHz Band
♦ Operates from Single +5.0V Supply
♦ Selectable Image-Rejection Center Frequency
♦ Selectable x64 or x32 f

XTAL

Ratio

♦ Low (< 6.7mA) Operating Supply Current
♦ < 3.0µA Low-Current Power-Down Mode for

Efficient Power Cycling

♦ 250µs Startup Time
♦ Built-In 44dB RF Image Rejection
♦ Excellent Receive Sensitivity Over Temperature
♦ -40°C to +125°C Operation

MAX7034

315MHz/434MHz ASK Superheterodyne

Receiver

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Maxim Integrated Products

XTAL2

SHDN

PDOUT

DATAOUT

DSP

EN_REG

DFFB

OPP

DSN

DFO

IFIN2

IFIN1

XTALSEL

DGND

MIXOUT

IRSEL

AGND

MIXIN2

MIXIN1

LNAOUT

AGND

LNASRC

LNAIN

DD5

XTAL1

TSSOP

TOP VIEW

MAX7034

Pin Configuration

Ordering Information

Applications

19-3109; Rev 0; 1/08

Denotes a lead-free package.

T = Tape-and-reel.

Typical Application Circuit appears at end of data sheet.

PART

TEMP RANGE

PIN-
PACKAGE

PKG
CODE

MAX7034AUI+T

-40

°C to +125°C

28 TSSOP
(9.7mm x
4.4mm)

U28-1

Automotive Remote
Keyless Entry

Security Systems

Garage Door Openers

Home Automation

Remote Controls

Local Telemetry

Wireless Sensors