MAX1470EUI Maxim Integrated Products, MAX1470EUI Datasheet

MAX1470EUI

Manufacturer Part Number

MAX1470EUI

Description

TSSOP28

Manufacturer

Maxim Integrated Products

Datasheet

1.MAX1470EUI.pdf (12 pages)

Specifications of MAX1470EUI

Date_code

08+

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Download datasheet (221Kb)

The MAX1470 is a fully integrated low-power CMOS

superheterodyne receiver for use with amplitude-shift-

keyed (ASK) data in the 315MHz band. With few

required external components, and a low-current

power-down mode, it is ideal for cost- and power-sensi-

tive applications in the automotive and consumer mar-

kets. The chip consists of a 315MHz low-noise amplifier

(LNA), an image rejection mixer, a fully integrated

315MHz phase-lock-loop (PLL), a 10.7MHz IF limiting

amplifier stage with received-signal-strength indicator

(RSSI) and an ASK demodulator, and analog baseband

data-recovery circuitry.

The MAX1470 is available in a 28-pin TSSOP package.

19-2135; Rev 1; 8/02

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.

Remote Keyless Entry

Garage Door Openers

Remote Controls

Wireless Sensors

Wireless Computer Peripherals

Security Systems

Toys

Video Game Controllers

Medical Systems

315MHz Low-Power, +3V Superheterodyne

LNASRC

LNAIN

DGND

AGND

________________________________________________________________ Maxim Integrated Products

5,10

2,7

General Description

XTAL1

DETECTOR

LNA

CRYSTAL

DIVIDE

PHASE

DRIVER

BY 64

XTAL2

MAX1470

Applications

SHUTDOWN

PWRDN

FILTER

LOOP

LNAOUT

VCO

DATAOUT

MIXIN1

SLICER

DATA

MIXIN2

DSN

DSP

o Operates from a Single +3.0V to +3.6V Supply

o Built-In 53dB RF Image Rejection

o -115dBm Receive Sensitivity*

o 250µs Startup Time

o Low 5.5mA Operating Supply Current

o 1.25µA Low-Current Power-Down Mode for

o 250MHz to 500MHz Operating Band (Image

o Integrated PLL with On-Board Voltage-Controlled

o Selectable IF Bandwidth Through External Filter

o Complete Receive System from RF to Digital Data

*See Note 2, AC Electrical Characteristics.

Typical Application Circuit appears at end of data sheet.

Pin Configuration appears at end of data sheet.

90°

0°

Efficient Power Cycling

Rejection Optimized at 315MHz)

Oscillator (VCO) and Loop Filter

Out

MAX1470EUI

DETECTOR

PART

PEAK

PDOUT

MIXOUT

IFIN1

OPP

-40°C to +85°C

TEMP RANGE

Ordering Information

100kΩ

Functional Diagram

DF2

IFIN2

RSSI

FILTER

DATA

100kΩ

DF1

LIMITING

AMPS

Receiver

PIN-PACKAGE

28 TSSOP

Features

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