Click here to ask about the production status of specific part numbers. MAX41470 290MHz to 960MHz ASK/FSK Receiver with SPI Interface General Description Benefits and Features The MAX41470 is a high-performance, low-power receiver Low Bill of Materials (BOM) that is ideal for amplitude shift-keyed (ASK) and frequency No External Balun, No External Filter, etc. shift-keyed (FSK) data. The receiver can be configured Single Low-Cost 16MHz External Crystal for three popular sub-1GHz bands while using a single Long Range with High Sensitivity low-cost 16MHz crystal: 287MHz to 320MHz, 425MHz to Low Power Consumption 480MHz, and 860MHz to 960MHz. 9mA Operating Supply Current The MAX41470 is capable of both ASK and FSK reception 10nA Power-Down Current and is also fully programmable through an SPI interface. Self-Polling (Remote Wake-Up) for Reduced Power The receiver has excellent RF sensitivity and allows input Preamble Detection with Interrupt Output signals up to 0dBm of power at the RF input. With an Average Current as Low as 350A integrated IF filter, a few external components, and low Duty Cycle Less Than 1% Capable operating/power-down currents, the MAX41470 receiver Fast Startup Time is ideal for cost- and power-sensitive applications. The Automatic Gain Control (AGC) Adjusted Digital RSSI chip also includes a low-noise amplifier (LNA), fully dif- Automatic Frequency Control (AFC) ferential image-rejection mixer, on-chip phase-locked loop Fast Frequency Switching Frac-N Synthesizer (PLL) with integrated voltage-controlled oscillator (VCO), 33dB Calibrated Image Rejection received signal strength indicator (RSSI), and digital de- Passes ETSI Category 2 Blocking Requirements modulation. 2.5kV HBM ESD Protection, 4kV on LNA Input The device operates in the 1.8V to 3.6V supply voltage Up to 200kbps Data Rate (NRZ) range and also features a power-saving, fully programma- 1.8V to 3.6V Supply Voltage ble, self-polling (duty cycling) mode with preamble detec- -40C to +105C Operating Temperature Range tion and interrupt output to wake up an external microcon- 4mm x 4mm, 12-TQFN with 0.8mm Pitch troller unit (MCU). Ordering Information appears at end of datasheet. The parts are available in a 12-pin thin QFN (TQFN) pack- age and are specified for the -40C to +105C extended temperature range. Applications Home Automation and Security Building Access Control Garage Door Openers (GDO) Remote Keyless Entry (RKE) Tire Pressure Monitoring Systems (TPMS) Restaurant Pagers 19-100861 Rev 1 9/20MAX41470 290MHz to 960MHz ASK/FSK Receiver with SPI Interface Simplified Block Diagram XTAL1 XTAL2 PWRDN CRYSTAL OSCILLATOR SPI SDIO AND SCLK CTRL SYNTHESIZER CSB I Q I DATA LNA LNA CLK Q GND LNA www.maximintegrated.com Maxim Integrated 2 QUADRATURE MIXER FILTERING RECEIVER DEMODULATOR