315MHZ LOW POWER, 3V SUPERHETERODYNE RECEIVER datasheet, 315MHZ LOW POWER, 3V SUPERHETERODYNE RECEIVER pdf, 315MHZ LOW POWER, 3V SUPERHETERODYNE RECEIVER datenblatt, 315MHZ LOW POWER, 3V SUPERHETERODYNE RECEIVER function

General Description

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-sensitive applications in the automotive and consumer markets. 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.

Features

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

♦ Built-In 53dB RF Image Rejection

♦ -115dBm Receive Sensitivity*

♦ 250µs Startup Time

♦ Low 5.5mA Operating Supply Current

♦ 1.25µA Low-Current Power-Down Mode for Efficient Power Cycling

♦ 250MHz to 500MHz Operating Band (Image Rejection Optimized at 315MHz)

♦ Integrated PLL with On-Board Voltage-Controlled Oscillator (VCO) and Loop Filter

♦ Selectable IF Bandwidth Through External Filter

♦ Complete Receive System from RF to Digital Data Out

Applications

Remote Keyless Entry

Garage Door Openers

Remote Controls

Wireless Sensors

Wireless Computer Peripherals

Security Systems

Toys

Video Game Controllers

Medical Systems

General Description

The MAX1471 Low-Power, CMOS, Superheterodyne, RF dual-channel Receiver is designed to receive both amplitude-shift-keyed (ASK) and frequency-shift-keyed (FSK) data without reconfiguring the device or introducing any time delay normally associated with changing modulation schemes. The MAX1471 requires few external components to realize a complete wireless RF digital data Receiver for the 300MHz to 450MHz ISM bands.

Features

♦ ASK and FSK Demodulated Data on Separate Outputs

♦ Specified over Automotive -40°C to +125°C Temperature Range

♦ Low Operating Supply Voltage Down to 2.4V

♦ On-Chip 3V Regulator for 5V Operation

♦ Low Operating Supply Current

7mA Continuous Receive Mode

1.1µA Deep-Sleep Mode

♦ Discontinuous Receive (DRX) Low-Power Management

♦ Fast-On Startup Feature < 250µs

♦ Integrated PLL, VCO, and Loop Filter

♦ 45dB Integrated Image Rejection

♦ RF Input Sensitivity

ASK: -114dBm

FSK: -108dBm

♦ Selectable IF BW with External Filter

♦ Programmable Through Serial User Interface

♦ RSSI Output and High Dynamic Range with AGC

Applications

Automotive Remote Keyless Entry (RKE)

Tire Pressure Monitoring Systems

Garage Door Openers

Wireless Sensors

Wireless Keys

Security Systems

Medical Systems

Home Automation

Local Telemetry Systems

General Description
The MAX7034 fully integrated low-power CMOS Superheterodyne Receiver is ideal for receiving amplitudeshift-keyed (ASK) data in the 300MHz to 450MHz frequency range (including the popular 315MHz and 433.92MHz frequencies). 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-sensitive 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.

Features
♦ Optimized for 315MHz or 433.92MHz Band
♦ Operates from Single +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

Applications
   Automotive Remote Keyless Entry
   Security Systems
   Garage Door Openers
   Home Automation
   Remote Controls
   Local Telemetry
   Wireless Sensors

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 sensitivity of -114dBm. With few external components and a low-current power-down mode, it is ideal for cost-sensitive and power-sensitive 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.