EVALUATION KIT AVAILABLE Click here for production status of specific part numbers. MAX1473 315MHz/433MHz ASK Superheterodyne Receiver with Extended Dynamic Range General Description Features The MAX1473 fully integrated low-power CMOS Optimized for 315MHz or 433MHz ISM Band superheterodyne receiver is ideal for receiving amplitude- Operates from Single 3.3V or 5.0V Supplies shift-keyed (ASK) data in the 300MHz to 450MHz frequency High Dynamic Range with On-Chip AGC range. Its signal range is from -114dBm to 0dBm. With few external components and a low-current power-down mode, Selectable Image-Rejection Center Frequency it is ideal for cost- and power-sensitive applications typical Selectable x64 or x32 f /f Ratio LO XTAL in the automotive and consumer markets. The chip consists Low 5.2mA Operating Supply Current of a low-noise amplifier (LNA), a fully differential image- rejection mixer, an on-chip phase-locked-loop (PLL) with < 2.5A Low-Current, Power-Down Mode for Efficient integrated voltage-controlled oscillator (VCO), a 10.7MHz IF Power Cycling limiting amplifier stage with received-signal-strength indicator 250s Startup Time (RSSI), and analog baseband data-recovery circuitry. The MAX1473 also has a discrete one-step automatic gain Built-In 50dB RF Image Rejection control (AGC) that drops the LNA gain by 35dB when the RF Receive Sensitivity of -114dBm input signal is greater than -57dBm. Ordering Information The MAX1473 is available in 28-pin TSSOP and 32-pin thin QFN packages. Both versions are specified for the PART TEMP RANGE PIN-PACKAGE extended (-40C to +85C) temperature range. MAX1473EUI+ -40C to +85C 28 TSSOP Applications MAX1473ETJ+ -40C to +85C 32 Thin QFN-EP* Automotive Remote Security Systems + Denotes a lead(Pb)-free/RoHS-compliant package. Keyless Entry Home Automation *EP = Exposed pad. Garage Door Openers Local Telemetry Remote Controls Systems Functional Diagram and Typical Application Circuit appear Wireless Sensors at end of data sheet. Pin Configurations TOP VIEW + XTAL1 1 28 XTAL2 AVDD 2 27 PWRDN + LNAIN 3 26 PDOUT LNASRC 4 25 DATAOUT N.C. 1 24 DATAOUT AGND 5 24 V AGND 2 23 V DD5 DD5 MAX1473 LNAOUT 6 23 DSP LNAOUT 3 22 DSP AVDD 7 22 DFFB MAX1473 AVDD 4 21 N.C. MIXIN1 8 21 OPP MIXIN1 5 20 DFFB MIXIN2 9 20 DSN MIXIN2 6 19 OPP AGND 10 19 DFO AGND 7 18 DSN IRSEL 11 18 IFIN2 IRSEL 8 17 DFO MIXOUT 12 17 IFIN1 DGND 13 16 XTALSEL DVDD 15 AGCDIS 14 TSSOP THIN QFN 19-2748 Rev 7 1/19 MIXOUT 9 32 LNASRC DGND 10 31 LNAIN DVDD 11 30 AVDD AGCDIS 12 29 XTAL1 N.C. 13 28 XTAL2 XTALSEL 14 27 PWRDN IFIN1 15 26 PDOUT IFIN2 16 25 N.C.MAX1473 315MHz/433MHz ASK Superheterodyne Receiver with Extended Dynamic Range Absolute Maximum Ratings V to AGND .....................................................-0.3V to +6.0V Continuous Power Dissipation (T = +70C) DD5 A AVDD to AGND ....................................................-0.3V to +4.0V 28-Pin TSSOP (derate 12.8mW/C above +70C) .1025.6mW DVDD to DGND ....................................................-0.3V to +4.0V 32-Pin Thin QFN (derate 21.3mW/C AGND to DGND ...................................................-0.1V to +0.1V above +70C) .........................................................1702.1mW IRSEL, DATAOUT, XTALSEL, AGCDIS, Operating Temperature Ranges PWRDN to AGND ................................... -0.3V to (V + 0.3V) MAX1473E ..................................................... -40C to +85C DD5 All Other Pins to AGND ..........................-0.3V to (AV + 0.3V) Storage Temperature Range ............................ -60C to +150C DD Lead Temperature (soldering 10s) ..................................+300C Soldering Temperature (reflow) .......................................+260C Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. DC Electrical Characteristics (3.3V Operation) (Typical Application Circuit, AV = DV = V = 3.0V to 3.6V, no RF signal applied, T = -40C to +85C, unless otherwise noted. DD DD DD5 A Typical values are at V = 3.3V and T = +25C.) (Note 1) DD A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Supply Voltage V 3.3V nominal supply 3.0 3.3 3.6 V DD f = 315MHz 5.2 6.23 RF Supply Current I V = V mA DD PWRDN DD5 f = 433MHz 5.8 6.88 RF f = 315MHz 1.6 V = 0V, RF PWRDN Shutdown Supply Current I A PWRDN V = 0V XTALSEL f = 433MHz 2.5 5.3 RF Input Voltage Low V 0.4 V IL Input Voltage High V AV - 0.4 V IH DD Input Logic Current High I 10 A IH f = 433MHz, V = AV AV - 0.4 RF IRSEL DD DD Image Reject Select (Note 2) f = 375MHz, V = AV /2 1.1 AV - 1.5 V RF IRSEL DD DD f = 315MHz, V = 0V 0.4 RF IRSEL DATAOUT Voltage Output Low V 0.4 V OL R = 5k L DATAOUT Voltage Output High V V - 0.4 V OH DD5 Maxim Integrated 2 www.maximintegrated.com