MAX7042 19-3704 Rev 2 1/12 308MHz/315MHz/418MHz/433.92MHz Low-Power, FSK Superheterodyne Receiver General Description Features The MAX7042 fully integrated, low-power, CMOS +2.4V to +3.6V or +4.5V to +5.5V Single-Supply superheterodyne RF receiver is designed to receive Operation frequency-shift-keyed (FSK) data at rates up to 66kbps Four User-Selectable Carrier Frequencies nonreturn-to-zero (NRZ) (33kbps Manchester). The 308, 315, 418, and 433.92MHz MAX7042 requires only a few external components to -110dBm RF Input Sensitivity at 315MHz realize a complete wireless RF receiver at 308, 315, 418, and 433.92MHz. -109dBm RF Input Sensitivity at 433.92MHz The MAX7042 includes all the active components Fast Startup (< 250s) required in a superheterodyne receiver including a low- Small 32-Pin TQFN Package noise amplifier (LNA), an image-rejection (IR) mixer, a Low Operating Supply Current fully integrated phase-locked loop (PLL), local oscillator 6.2mA Continuous (LO), 10.7MHz IF limiting amplifier with received-signal- 20nA Power-Down strength indicator (RSSI), low-noise FM demodulator, and a 3V regulator. Differential peak-detecting data Integrated PLL, VCO, and Loop Filter demodulators are included for baseband data recovery. 45dB Integrated Image Rejection The MAX7042 is available in a 32-pin TQFN and is Selectable IF BW with External Filter specified over the automotive -40C to +125C tem- Positive and Negative Peak Detectors perature range. RSSI Output Ordering Information PART TEMP RANGE PIN-PACKAGE Applications MAX7042ATJ+ -40C TO +125C 32 TQFN-EP* +Denotes a lead(Pb)-free/RoHS-compliant package. Remote Keyless Entry *EP = Exposed pad. Tire-Pressure Monitoring Home and Office Lighting Control Pin Configuration Remote Sensing Smoke Alarms TOP VIEW Home Automation Local Telemetry Systems 24 23 22 21 20 19 18 17 Security Systems IFIN+ N.C. 25 16 EN 26 15 IFIN- FSEL1 27 14 AGND FSEL2 28 13 MIXOUT MAX7042 HVIN 29 12 MIXIN- DATA 30 11 MIXIN+ LNASEL 31 10 LNAOUT EP 32 9 N.C. LNASRC + 1234567 8 Typical Application Circuit appears at end of data sheet. TQFN Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com. EVALUATION KIT AVAILABLE DVDD N.C. N.C. DGND N.C. DF RSSI OP+ XTAL2 DS+ XTAL1 DS- AVDD PDMAX LNAIN PDMIN308MHz/315MHz/418MHz/433.92MHz Low-Power, FSK Superheterodyne Receiver ABSOLUTE MAXIMUM RATINGS HVIN to AGND or DGND.......................................-0.3V to +6.0V Operating Temperature Range .........................-40C to +125C AVDD, DVDD to AGND or DGND..........................-0.3V to +4.0V Storage Temperature Range .............................-65C to +150C FSEL1, FSEL2, LNASEL, Maximum RF Input Power ................................................+0dBm EN, DATA...............................(DGND - 0.3V) to (HVIN + 0.3V) Lead Temperature (soldering, 10s) .................................+300C All Other Pins............................(AGND - 0.3V) to (AVDD + 0.3V) Soldering Temperature (reflow) .......................................+260C Continuous Power Dissipation (T = +70C) A 32-Pin TQFN (derate 34.5mW/C above +70C)..........2759mW 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, 50 system impedance, V = V = V = +2.4V to +3.6V, f = 308, 315, 418, and AVDD DVDD HVIN RF 433.92MHz T = -40C to +125C, unless otherwise noted. Typical values are at V = V = V = +3.0V, A AVDD DVDD HVIN f = 433.92MHz, P -80dBm, T = +25C, unless otherwise noted.) RF RFIN A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS HVIN, AVDD, and DVDD connected Supply Voltage (3V) V 2.4 3.0 3.6 V DD to power supply HVIN connected to power supply, Supply Voltage (5V) HVIN AVDD and DVDD unconnected from 4.5 5.0 5.5 V HVIN, but connected together Operating, 1x I 6.2 LNA 315M H z (3V ) Operating, 2x I 6.8 LNA Operating, 1x I 6.4 LNA 315M H z (5V ) Operating, 2x I 7.0 LNA Supply Current I mA DD Operating, 1x I 6.4 8.7 LNA 434M H z (3V ) Operating, 2x I 7.0 8.6 LNA Operating, 1x I 6.6 8.4 LNA 434M H z (5V ) Operating, 2x I 7.2 9.2 LNA T = +25C 0.02 A All digital Shutdown Current (3V) I A SHDN T = +85C 0.1 A inputs low T = +125C 0.85 6 A T = +25C 0.6 A All digital Shutdown Current (5V) I T = +85C 1.4 A SHDN A inputs low T = +125C 4 7 A Time from EN = high to final signal detection does not include Startup Time t 250 s ON baseband filter or data- slicer reference settling DIGITAL I/O Input High Threshold V 0.9 x V V IH HVIN Input Low Threshold V 0.1 x V V IL HVIN 2 MAX7042