MAX7034 查看數據表（PDF） - Maxim Integrated

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MAX7034

315MHz/434MHz ASK Superheterodyne Receive

Maxim Integrated 

MAX7034

315MHz/434MHz ASK Superheterodyne

Receiver

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 fre-

quencies). The receiver has an RF sensitivity of -114dBm.

With few external components and a low-current power-

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

tive applications typical in the automotive and consumer

markets. The MAX7034 consists 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 (9.7mm x 4.4mm)

TSSOP package and is specified over the automotive

(-40°C to +125°C) temperature range.

Applications

●● Automotive Remote

Keyless Entry

●● Security Systems

●● Garage Door Openers

●● Home Automation

●● Remote Controls

●● Local Telemetry

●● Wireless Sensors

Features

●● Optimized for 315MHz or 433.92MHz Band

●● Operates from Single +3.3V/+5.0V Supply

●● Selectable Image-Rejection Center Frequency

●● Selectable x64 or x32 fLO/fXTAL 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

●● -40°C to +105°C Operation (3.0V to 3.6V Supply)

Ordering Information and Typical Application Circuit

appear at end of data sheet.

Pin Configuration

TOP VIEW

+

XTAL1 1

AVDD 2

LNAIN 3

LNASRC 4

AGND 5

LNAOUT 6

MAX7034

AVDD 7

MIXIN1 8

MIXIN2 9

AGND 10

IRSEL 11

MIXOUT 12

DGND 13

DVDD 14

TSSOP

28 XTAL2

27 SHDN

26 PDOUT

25 DATAOUT

24 VDD5

23 DSP

22 DFFB

21 OPP

20 DSN

19 DFO

18 IFIN2

17 IFIN1

16 XTALSEL

15 EN_REG

19-3109; Rev 4; 11/16

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