EVALUATION KIT AVAILABLE MAX2686/MAX2688 GPS/GNSS Low-Noise Amplifiers General Description Features The MAX2686/MAX2688 low-noise amplifiers (LNAs) are High-Power Gain: 19dB (MAX2686) designed for GPS L1, Galileo, and GLONASS applica- Ultra-Low-Noise Figure: 0.75dB (MAX2686) tions. Designed in Maxims advanced SiGe process, the Integrated 50 Output Matching Circuit devices achieve high gain and ultra-low-noise figure while maximizing the input-referred 1dB compression point and Low Supply Current: 4.1mA the 3rd-order intercept point. The MAX2686 provides a Wide Supply Voltage Range: 1.6V to 3.3V high gain of 19dB. The MAX2688 supplies 15dB of gain Low Bill of Materials: One Inductor, Two Capacitors while attaining higher linearity. Small Footprint: 0.86mm x 0.86mm The devices operate from a +1.6V to +3.3V single supply. Thin Profile: 0.65mm The optional shutdown feature in the devices reduces the supply current to less than 10A. The devices are avail- 0.4mm-Pitch Wafer-Level Package (WLP) able in a very small, lead-free, RoHS-compliant, 0.86mm x 0.86mm x 0.65mm wafer-level package (WLP). Ordering Information Applications PART TEMP RANGE PIN-PACKAGE Automotive Navigation MAX2686EWS+T -40C to +85C 4 WLP Telematics (Asset Tracking and Management) MAX2688EWS+T -40C to +85C 4 WLP Personal Navigation Devices (PNDs) +Denotes a lead(Pb)-free/RoHS-compliant package. Cellular Phones with GPS Notebook PCs/Ultra-Mobile PCs T = Tape and reel. Recreational, Marine Navigation Avionics Watches Digital Cameras Typical Application Circuit MAX2686 MAX2688 RFOUT V RF CC V CC A1 A2 OUTPUT C2 R1 25k SHDN OPTIONAL SHUTDOWN C1 L1 RFIN RF B1 B2 GND INPUT MAX2686 MAX2688 L1 = 6.8nH L1 = 6.2nH C1 = 100nF C1 = 100nF C2 = 10pF C2 = 10pF 19-5456 Rev 0 8/10MAX2686/MAX2688 GPS/GNSS Low-Noise Amplifiers Absolute Maximum Ratings V to GND...........................................................-0.3V to +3.6V Operating Temperature Range........................... -40C to +85C CC Other Pins to GND................-0.3V to (+ Operating V + 0.3V) Junction Temperature......................................................+150C CC Maximum RF Input Power................................................+5dBm Storage Temperature Range............................. -65C to +160C Continuous Power Dissipation (T = +70C) Lead Temperature (soldering, 10s).........Reflow Profile (Note 1) A 4-Bump WLP (derates 9.7mW/C above +70C).........776mW Soldering Temperature (reflow).......................................+260C Maximum Current into RF Input..........................................10mA Note 1: Refer to Application Note 1891: Wafer-Level Packaging (WLP) and Its Applications. CAUTION ESD SENSITIVE DEVICE 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 (MAX2686/MAX2688 EV kit, V = 1.6V to 3.3V, T = -40C to +85C, no RF signals are applied. Typical values are at V = 2.85V CC A CC and T = +25C, unless otherwise noted.) (Note 2) A PARAMETER CONDITIONS MIN TYP MAX UNITS Supply Voltage 1.6 2.85 3.3 V MAX2686 4.1 mA SHDN = high Supply Current MAX2688 4.1 10 A Shutdown mode, SHDN = low Digital Input Logic-High (Note 3) 1.2 V Digital Input Logic-Low (Note 3) 0.45 V AC Electrical Characteristics (MAX2686/MAX2688 EV kit, V = 1.6V to 3.3V, T = -40C to +85C, f = 1575.42MHz. Typical values are at V = 2.85V and CC A RFIN CC T = +25C, unless otherwise noted.) (Note 2) A PARAMETER CONDITIONS MIN TYP MAX UNITS RF Frequency L1 band 1575.42 MHz MAX2686 14.7 19 V = 2.85V (Note 4) CC MAX2688 11.9 15.4 Power Gain dB MAX2686 14.4 18.9 V = 1.6V CC MAX2688 11.6 15.3 MAX2686 0.75 Noise Figure V = 1.6V to 3.3V dB CC MAX2688 0.8 MAX2686 -3 In-Band 3rd-Order Input (Note 5) dBm Intercept Point MAX2688 +4 MAX2686 0 Out-of-Band 3rd-Order Input (Note 6) dBm Intercept Point MAX2688 +7 MAX2686 -10 Input 1dB Compression Point (Note 7) dBm MAX2688 -6 Input Return Loss 8.5 dB Maxim Integrated 2 www.maximintegrated.com