MAX7042ATJ+C1R

19-3704; Rev 2; 1/12 KIT ATION EVALU E L B A AVAIL 308MHz/315MHz/418MHz/433.92MHz Low-Power, FSK Superheterodyne Receiver Features The MAX7042 fully integrated, low-power, CMOS superheterodyne RF receiver is designed to receive frequency-shift-keyed (FSK) data at rates up to 66kbps nonreturn-to-zero (NRZ) (33kbps Manchester). The MAX7042 requires only a few external components to realize a complete wireless RF receiver at 308, 315, 418, and 433.92MHz. o +2.4V to +3.6V or +4.5V to +5.5V Single-Supply Operation The MAX7042 includes all the active components required in a superheterodyne receiver including a lownoise amplifier (LNA), an image-rejection (IR) mixer, a fully integrated phase-locked loop (PLL), local oscillator (LO), 10.7MHz IF limiting amplifier with received-signalstrength indicator (RSSI), low-noise FM demodulator, and a 3V regulator. Differential peak-detecting data demodulators are included for baseband data recovery. o Fast Startup (< 250µs) o Small 32-Pin TQFN Package o Low Operating Supply Current 6.2mA Continuous 20nA Power-Down o Integrated PLL, VCO, and Loop Filter o 45dB Integrated Image Rejection o Selectable IF BW with External Filter The MAX7042 is available in a 32-pin TQFN and is specified over the automotive -40°C to +125°C temperature range. o Four User-Selectable Carrier Frequencies 308, 315, 418, and 433.92MHz o -110dBm RF Input Sensitivity at 315MHz o -109dBm RF Input Sensitivity at 433.92MHz o Positive and Negative Peak Detectors o RSSI Output Ordering Information Applications Remote Keyless Entry Tire-Pressure Monitoring PART MAX7042ATJ+ TEMP RANGE PIN-PACKAGE -40°C TO +125°C 32 TQFN-EP* +Denotes a lead(Pb)-free/RoHS-compliant package. *EP = Exposed pad. Home and Office Lighting Control Pin Configuration Remote Sensing Security Systems OP+ DS+ DS- PDMAX PDMIN Local Telemetry Systems DF TOP VIEW DGND Home Automation DVDD Smoke Alarms 24 23 22 21 20 19 18 17 N.C. 25 16 IFIN+ EN 26 15 IFIN- FSEL1 27 14 AGND FSEL2 28 13 MIXOUT HVIN 29 12 MIXIN- MAX7042 DATA 30 11 MIXIN+ LNASEL 31 10 LNAOUT N.C. 32 9 LNASRC EP 4 5 6 N.C. RSSI XTAL2 XTAL1 7 8 AVDD 3 LNAIN 2 N.C. Typical Application Circuit appears at end of data sheet. 1 N.C. + TQFN ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. 1 MAX7042 General Description MAX7042 308MHz/315MHz/418MHz/433.92MHz Low-Power, FSK Superheterodyne Receiver ABSOLUTE MAXIMUM RATINGS HVIN to AGND or DGND .......................................-0.3V to +6.0V AVDD, DVDD to AGND or DGND..........................-0.3V to +4.0V FSEL1, FSEL2, LNASEL, EN, DATA...............................(DGND - 0.3V) to (HVIN + 0.3V) All Other Pins............................(AGND - 0.3V) to (AVDD + 0.3V) Continuous Power Dissipation (TA = +70°C) 32-Pin TQFN (derate 34.5mW/°C above +70°C)..........2759mW Operating Temperature Range .........................-40°C to +125°C Storage Temperature Range .............................-65°C to +150°C Maximum RF Input Power ................................................+0dBm Lead Temperature (soldering, 10s) .................................+300°C Soldering Temperature (reflow) .......................................+260°C 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 (Typical Application Circuit, 50Ω system impedance, VAVDD = VDVDD = VHVIN = +2.4V to +3.6V, fRF = 308, 315, 418, and 433.92MHz; T A = -40°C to +125°C, unless otherwise noted. Typical values are at V AVDD = V DVDD = V HVIN = +3.0V, fRF = 433.92MHz, PRFIN ≤ -80dBm, TA = +25°C, unless otherwise noted.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Supply Voltage (3V) VDD HVIN, AVDD, and DVDD connected to power supply 2.4 3.0 3.6 V Supply Voltage (5V) HVIN HVIN connected to power supply, AVDD and DVDD unconnected from HVIN, but connected together 4.5 5.0 5.5 V 315MHz (3V) 315MHz (5V) Supply Current IDD 434MHz (3V) 434MHz (5V) Shutdown Current (3V) Shutdown Current (5V) Startup Time ISHDN ISHDN tON All digital inputs low All digital inputs low Operating, 1x ILNA 6.2 Operating, 2x ILNA 6.8 Operating, 1x ILNA 6.4 Operating, 2x ILNA 7.0 Operating, 1x ILNA 6.4 8.7 Operating, 2x ILNA 7.0 8.6 Operating, 1x ILNA 6.6 8.4 Operating, 2x ILNA 7.2 9.2 TA = +25°C 0.02 TA = +85°C 0.1 TA = +125°C 0.85 TA = +25°C 0.6 TA = +85°C 1.4 TA = +125°C 4 Time from EN = high to final signal detection; does not include baseband filter or dataslicer reference settling mA µA 6 µA 7 250 µs DIGITAL I/O Input High Threshold VIH Input Low Threshold VIL 2 0.9 x VHVIN V 0.1 x VHVIN _______________________________________________________________________________________ V 308MHz/315MHz/418MHz/433.92MHz Low-Power, FSK Superheterodyne Receiver (Typical Application Circuit, 50Ω system impedance, VAVDD = VDVDD = VHVIN = +2.4V to +3.6V, fRF = 308, 315, 418, and 433.92MHz; T A = -40°C to +125°C, unless otherwise noted. Typical values are at V AVDD = V DVDD = V HVIN = +3.0V, fRF = 433.92MHz, PRFIN ≤ -80dBm, TA = +25°C, unless otherwise noted.) PARAMETER SYMBOL Input High Pulldown Current IIH Input Low-Leakage Current IIL TYP MAX VHVIN = +3.6V CONDITIONS 8 15 VHVIN = +5.5V 20 40 VHVIN = +3.6V