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290MHz to 960MHz ASK/FSK Receiver with SPI Interface

High RF Sensitivity Receiver with Low Current Consumption, Ideal for Low-Cost and Power-Sensitive ASK/FSK Applications

Product Details

The MAX41470 is a high-performance, low-power receiver that is ideal for amplitude shift-keyed (ASK) and frequency shift-keyed (FSK) data. The receiver can be configured for three popular sub-1GHz bands while using a single low-cost 16MHz crystal: 287MHz to 320MHz, 425MHz to 480MHz, and 860MHz to 960MHz.

The MAX41470 is capable of both ASK and FSK reception and is also fully programmable through an SPI interface.

The receiver has excellent RF sensitivity and allows input signals up to 0dBm of power at the RF input. With an integrated IF filter, a few external components, and low operating/power-down currents, the MAX41470 receiver is ideal for cost- and power-sensitive applications. The chip also includes a low-noise amplifier (LNA), fully differential image-rejection mixer, on-chip phase-locked loop (PLL) with integrated voltage-controlled oscillator (VCO), received signal strength indicator (RSSI), and digital demodulation.

The device operates in the 1.8V to 3.6V supply voltage range and also features a power-saving, fully programmable, self-polling (duty cycling) mode with preamble detection and interrupt output to wake up an external microcontroller unit (MCU).

The parts are available in a 12-pin thin QFN (TQFN) package and are specified for the -40°C to +105°C extended temperature range.

Key Features

  • Low Bill of Materials (BOM)
    • No External Balun, No External Filter, etc.
    • Single Low-Cost 16MHz External Crystal
  • Long Range with High Sensitivity
  • Low Power Consumption
    • ​9mA Operating Supply Current
    • 10nA Power-Down Current
  • Self-Polling (Remote Wake-Up) for Reduced Power
    • Preamble Detection with Interrupt Output
    • Average Current as Low as 350μA
    • Duty Cycle Less Than 1% Capable
    • Fast Startup Time
  • Automatic Gain Control (AGC) Adjusted Digital RSSI
  • Automatic Frequency Control (AFC)
  • Fast Frequency Switching Frac-N Synthesizer
  • 33dB Calibrated Image Rejection
  • Passes ETSI Category 2 Blocking Requirements
  • ±2.5kV HBM ESD Protection, ±4kV on LNA Input
  • Up to 200kbps Data Rate (NRZ)
  • 1.8V to 3.6V Supply Voltage
  • -40°C to +105°C Operating Temperature Range
  • 4mm x 4mm, 12-TQFN with 0.8mm Pitch

Applications/Uses

  • Home Automation and Security
  • Building Access Control
  • Garage Door Openers (GDO)
  • Remote Keyless Entry (RKE)
  • Tire Pressure Monitoring Systems (TPMS)
  • Restaurant Pagers
Parametric specs for ISM RF Receivers < 1GHz
Band/ Freq. (MHz) 290 to 960
Modulation Mode ASK
FSK
OOK
RX Sensitivity (dBm) -127
Data Rate (kbps) (max) 200
Package/Pins TQFN/12
Budgetary
Price (See Notes)
$0.82 @1k
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Simplified Block Diagram

MAX41470: Functional Diagram MAX41470: Functional Diagram Zoom icon

Technical Docs

Design & Development

Click any title below to view the detail page where available.

Description

The MAX41470 evaluation kit (EV kit) contains a single MAX41470 high output power VHF/UHF sub-GHz ISM/ SRD receiver designed to receive frequency-shift keying (FSK), Gaussian GFSK, or amplitude-shift keying (ASK) data in the 287MHz to 320MHz, 425MHz to 480MHz, and 860MHz to 960MHz frequency ranges.

The MAX41470 EV kit operates in conjunction with an external microcontroller (MCU) and graphical user interface (GUI) software running on a computer. The MAX41470 uses an SPI interface for internal register configurations.

The EV kit includes Windows® 10-compatible software that provides a simple GUI for configuration of all the MAX41470 registers through the SPI port. The GUI also controls the on-board PMIC when the MAX32630FTHR applications platform is used.

View Details

Features

  • Evaluates the MAX41470 Sub-1GHz ISM Receiver
  • Single Input Voltage Supply from 1.8V to 3.6V
  • Direct Interface with a MAX32630FTHR
  • Arm® Microcontroller (MCU) Board
  • Available PMOD Hardware Interface
  • Windows 10-Compatible Software
  • On-Board SPI Interface Control for the MAX41470
  • GUI Controls for MAX32630FTHR Board PMIC
    • Operation from 1.8V to 3.3V
  • Proven Four-Layer PCB Design
  • Fully Assembled and Tested

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Support & Training

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Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal.

Parameters

Parametric specs for ISM RF Receivers < 1GHz
Band/ Freq. (MHz) 290 to 960
Modulation Mode ASK
FSK
OOK
RX Sensitivity (dBm) -127
Data Rate (kbps) (max) 200
Package/Pins TQFN/12
Budgetary
Price (See Notes)
$0.82 @1k

Key Features

  • Low Bill of Materials (BOM)
    • No External Balun, No External Filter, etc.
    • Single Low-Cost 16MHz External Crystal
  • Long Range with High Sensitivity
  • Low Power Consumption
    • ​9mA Operating Supply Current
    • 10nA Power-Down Current
  • Self-Polling (Remote Wake-Up) for Reduced Power
    • Preamble Detection with Interrupt Output
    • Average Current as Low as 350μA
    • Duty Cycle Less Than 1% Capable
    • Fast Startup Time
  • Automatic Gain Control (AGC) Adjusted Digital RSSI
  • Automatic Frequency Control (AFC)
  • Fast Frequency Switching Frac-N Synthesizer
  • 33dB Calibrated Image Rejection
  • Passes ETSI Category 2 Blocking Requirements
  • ±2.5kV HBM ESD Protection, ±4kV on LNA Input
  • Up to 200kbps Data Rate (NRZ)
  • 1.8V to 3.6V Supply Voltage
  • -40°C to +105°C Operating Temperature Range
  • 4mm x 4mm, 12-TQFN with 0.8mm Pitch

Applications/Uses

  • Home Automation and Security
  • Building Access Control
  • Garage Door Openers (GDO)
  • Remote Keyless Entry (RKE)
  • Tire Pressure Monitoring Systems (TPMS)
  • Restaurant Pagers

Description

The MAX41470 is a high-performance, low-power receiver that is ideal for amplitude shift-keyed (ASK) and frequency shift-keyed (FSK) data. The receiver can be configured for three popular sub-1GHz bands while using a single low-cost 16MHz crystal: 287MHz to 320MHz, 425MHz to 480MHz, and 860MHz to 960MHz.

The MAX41470 is capable of both ASK and FSK reception and is also fully programmable through an SPI interface.

The receiver has excellent RF sensitivity and allows input signals up to 0dBm of power at the RF input. With an integrated IF filter, a few external components, and low operating/power-down currents, the MAX41470 receiver is ideal for cost- and power-sensitive applications. The chip also includes a low-noise amplifier (LNA), fully differential image-rejection mixer, on-chip phase-locked loop (PLL) with integrated voltage-controlled oscillator (VCO), received signal strength indicator (RSSI), and digital demodulation.

The device operates in the 1.8V to 3.6V supply voltage range and also features a power-saving, fully programmable, self-polling (duty cycling) mode with preamble detection and interrupt output to wake up an external microcontroller unit (MCU).

The parts are available in a 12-pin thin QFN (TQFN) package and are specified for the -40°C to +105°C extended temperature range.

Simplified Block Diagram

MAX41470: Functional Diagram MAX41470: Functional Diagram Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal.