MAXIM MAX2657/MAX2658 handbook
Contents
1. 25 C IIP3 dBm 4 f 85 C 1000 1500 2000 2500 16 18 20 22 24 26 28 30 32 FREQUENCY MHz SUPPLY VOLTAGE V MAX2657 OUT OF BAND IIP3 vs SUPPLY VOLTAGE AND TEMPERATURE TONE 1 AT 1713MHz 25dBm TONE 2 AT 1851MHz 49dBm MAX2657 toc07 25 C 85 C 5 i IIP3 dBm 16 18 20 22 24 26 28 30 32 SUPPLY VOLTAGE V IIP3 dBm gt MAX2657 MAX2658 EV kit Typical values are at Vcc 2 85V Ta 25 C and fRFIN 1575 42MHz unless otherwise noted MAX2658 IN BAND IIP3 vs SUPPLY VOLTAGE AND TEMPERATURE TWO TONES LOCATED AT 1MHz AND 2MHz OFFSET WITH 30dBm TONE MAX2657 toc06 16 18 20 22 24 26 28 30 32 SUPPLY VOLTAG MAX2658 OUT OF BAND IIP3 vs SUPPLY VOLTAGE AND TEMPERATURE TONE 1 AT 1713MHz 25dBm TONE 2 AT 1851MHz 49dBm MAX2657 toc08 1 6 18 20 22 24 26 28 30 32 SUPPLY VOLTAGE MAXIM GPS GNSS Low Noise Amplifiers Typical Operating Characteristics continued MAX2657 MAX2658 EV kit Typical values are at Vcc 2 85V Ta 25 C and fRFIN 1575 42MHz unless otherwise noted MAX2657 INPUT P1dB COMPRESSION MAX2658 INPUT P1dB COMPRESSION vs vs SUPPLY VOLTAGE AND TEMPERATURE SUPPLY VOLTAGE AND TEMPERATURE 11 2 9 le 3 10 85 C 3 13 a amp a2. 170 6 32 8 156 6 55 3 165 5 145 8 135 2 47 3 32 5 136 5 33 8 121 6 35 2 113 8 46 7 127 3 36 7 109 6 MAXIM GPS GNSS Low Noise Amplifiers Table 2 MAX2658 Typical S Parameter Values and K Factor 11 PHASE Degrees FREQ S11 MAG S21 MAG dB MHz dB 21 PHASE Degrees S12 MAG dB 12 PHASE Degrees S22 MAG dB 22 PHASE Degrees Table 3 MAX2657 Typical Noise Parameters Vcc 2 85V Ta 25 C IToptl ANGLE Table 4 MAX2658 Typical Noise Parameters Vcc 2 85V Ta 25 C ropt ANGLE RN Q FREQUENCY MHz MAKINI 7 8S9CXVW ZLS9CXVIN MAX265 7 MAX2658 GPS GNSS Low Noise Amplifiers Chip Information Package Information PROCESS SiGe BICMOS For the latest package outline information and land patterns go to www maxim ic com packages PACKAGE TYPE PACKAGE CODE DOCUMENT NO 6 WLP W61B1 1 21 0217 Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product No circuit patent licenses are implied Maxim reserves the right to change the circuitry and specifications without notice at any time 8 Maxim Integrated Products 120 San Gabriel Drive Sunnyvale CA 94086 408 737 7600 2009 Maxim Integrated Products Maxim is a registered tradem
3. CVALUATION KIT A A A AMN GPS GNSS Low Noise Amplifiers AVAILABLE General Description Features The MAX2657 MAX2658 high gain low noise amplifiers High Power Gain 19dB MAX2657 LNAs are designed for GPS L1 Galileo and GLONASS applications Designed in Maxim s Ultra Low Noise Figure 0 8dB advanced SiGe process the devices achieve a high Integrated 509 Output Matching Circuit gain and an ultra low noise figure while maximizing the input referred 1dB compression point and the 3rd order Low Supply Current 4 1mA MAX2657 intercept point Wide Supply Voltage Range 1 6V to 3 3V The MAX2657 MAX2658 operate from a 1 6V to 3 3V P Bs single supply The MAX2657 is optimized for low current Low BIN or Materias ne maar TWO The MAX2658 is optimized for high linearity The shut Capacitors down feature in the device reduces the supply current to Small Footprint 0 86mm x 1 26mm be less than 14A The MAX2657 MAX2658 are available in a very small lead free ROHS compliant 0 6mm x Thin Profile 0 65mm 1 26mm x 0 65mm wafer level package WLP 0 4mm Pitch Wafer Level Package WLP Applications Automotive Navigation Ordering Information Location Enabled Mobile Devices PART TEMP RANGE PIN PACKAGE Telematics Asset Tracking and Management MAX2657EWT 10 C to 485 C 6 WLP Personal Navigation Devices PNDs MAX2658EWT 10 C to 85 C 6 WLP Cellular Phones with GPS Denotes a lead Pb free RoHS compliant p
4. Return Loss Output Return Loss Reverse Isolation Note 2 Min and max limits guaranteed by test at Ta 85 C and guaranteed by design and characterization at Ta 40 C and Ta 25 C Note 3 Measured with the two tones located at 1MHz and 2MHz offset from the center of the GPS band with 30dBm tone for MAX2657 and 27dBm tone for MAX2658 Note 4 Measured with input tones at 1713MHz 25dBm and 1851MHz 49dBm Note 5 Measured with a tone located at 5MHz offset from the center of the GPS band Typical Operating Characteristics MAX2657 MAX2658 EV kit Typical values are at Vcc 2 85V Ta 25 C and fRFIN 1575 42MHz unless otherwise noted INPUT RETURN LOSS vs FREQUENCY GAIN vs FREQUENCY REVERSE ISOLATION vs FREQUENCY 0 3 25 3 20 5 MAX2658 2 at Z 30 10 15 amp 15 S 10 g M 2 N a DB 2 S 5 D ii MAX2657 25 0 60 30 5 35 10 70 500 1000 1500 2000 2500 500 1000 4500 2000 2500 500 1000 1500 2000 2500 FREQUENCY MHz FREQUENCY MHz FREQUENCY MHz MAAKLM 3 8S9CXVW ZLS9CXVIN MAX265 7 MAX2658 GPS GNSS Low Noise Amplifiers 5 OUTPUT RETURN LOSS vs FREQUENCY Typical Operating Characteristics continued MAX2657 IN BAND IIP3 vs SUPPLY VOLTAGE AND TEMPERATURE TWO TONES LOCATED AT 1MHz AND 2MHz OFFSET WITH 35dBm TONE MAX2657 toc04 MAX2657 toc05 40 C IIP3 dBm
5. ackage Notebook PCs Ultra Mobile PCs T rape anara Recreational Marine Navigation Avionics Watches Pin Configuration Typical Application Circuit MAXIM MAX2657 MAX2658 En RF S gt OUTPUT L1 6 2nH MAX2657 L1 2 7nH MAX2658 C1 820pF MAX2657 C1 1500pF MAX2658 C2 33nF MAXIM Maxim Integrated Products 1 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 8S9CXVW LS9CXVIN MAX265 7 MAX2658 GPS GNSS Low Noise Amplifiers ABSOLUTE MAXIMUM RATINGS VOC 1O GND iatet chose an ante dtl aS 0 3V to 3 6V Other Pins to GND 0 0 3V to Operating Vcc 0 3V Maximum RF Input Power aiscin ptn 5dBm Continuous Power Dissipation TA 70 C 6 Bump WLP derates 10 5mW C above 70 C 840mW Maximum Current into RF Input 10mA Operating Temperature Range Junction Temperature Storage Temperature Range s Lead Temperature soldering 10s Reflow Profile Note 1 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 imp
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7. lied Exposure to absolute maximum rating conditions for extended periods may affect device reliability DC ELECTRICAL CHARACTERISTICS MAX2657 MAX2658 EV kit Vcc 1 6V to 3 3V Ta 40 C to 85 C no RF signals are applied Typical values are at Vcc 2 85V and Ta 25 C unless otherwise noted Note 2 PARAMETER Supply Voltage SHDN high Supply Current 9 CONDITIONS MIN TYP 1 6 2 85 MAX2657 MAX2658 igital Input Logic High Shutdown mode SHDN low igital Input Logic Low igital Input Current AC ELECTRICAL CHARACTERISTICS MAX2657 MAX2658 EV kit Vcc 1 6V to 3 3V Ta 40 C to 85 C fRFIN 1575 42MHz Typical values are at Vcc 2 85V and Ta 25 C unless otherwise noted Note 2 PARAMETER CONDITIONS MIN TYP MAX RF Frequency L1 band Voc 2 85V 1575 42 MAX2657 MAX2658 Power Gain Vcc 1 6V Noise Figure MAX2657 MAX2658 Vcc 1 8V Voc 3 3V In Band 3rd Order Input Intercept Point MAX2657 MAX2658 Out of Band 3rd Order Input Intercept Point MAX2657 MAX2658 MAXIM GPS GNSS Low Noise Amplifiers AC ELECTRICAL CHARACTERISTICS continued MAX2657 MAX2658 EV kit Vcc 1 6V to 3 3V Ta 40 C to 85 C fRFIN 1575 42MHz Typical values are at Vcc 2 85V and Ta 25 C unless otherwise noted Note 2 PARAMETER CONDITIONS MAX2657 MAX2658 Input 1dB Compression point Input
8. mp E 2 2 412 zZ 2 425 C 16 3 j p 40 C 18 14 16 18 20 22 24 26 28 30 32 16 18 20 22 24 26 28 30 32 SUPPLY VOLTAGE V SUPPLY VOLTAGE V MAXIM 5 8S9CXVW ZLS9CXVIN MAX265 7 MAX2658 GPS GNSS Low Noise Amplifiers Pin Description FUNCTION Shutdown Input A logic low disables the device RF Output RFOUT is internally matched to 50Q and incorporates an internal DC blocking capacitor Detailed Description The MAX2657 MAX2658 are LNAs designed for GPS L1 Galileo and GLONASS applications The devices feature a power shutdown control mode to eliminate the need for an external supply switch The devices achieve a high gain and an ultra low noise figure Input and Output Matching The MAX2657 MAX2658 require an off chip inout match ing Only an inductor in series with a DC blocking capac itor is needed to form the input matching circuit The Typical Application Circuit shows the recommended input matching network These values are optimized for the best simultaneous gain noise figure and return loss performance Tables 1 and 2 list typical device S parameters and Kf values The MAX2657 MAX2658 integrate an on chip output matching to 50Q at the out put eliminating the need for external matching compo nents The value of the input coupling capacitor affects IIP3 A smaller coupling capacitor results in lower IIPS RF Input Requires a DC blocking capacitor and external matching component
9. s Supply Voltage Bypass to ground with a 33nF capacitor as close as possible to the IC Ground Connect to the PCB ground plane Shutdown The MAX2657 MAX2658 include a shutdown feature to turn off the entire chip Apply a logic high to the SHDN pin to place the part in the active mode and a logic low to place the part in the shutdown mode Applications Information A properly designed PCB is essential to any RF microwave circuit Use controlled impedance lines on all high frequency inputs and outputs Bypass Vcc with decoupling capacitors located close to the device For long Vcc lines it may be necessary to add decoupling capacitors Locate these additional capacitors further away from the device package Proper grounding of the GND pins is essential If the PCB uses a topside RF ground connect it directly to the GND pins For a board where the ground is not on the component layer connect the GND pins to the board with multiple vias close to the package Table 1 MAX2657 Typical S Parameter Values and K Factor 11 21 PHASE PHASE Degrees Degrees FREQ S11 MAG MHz dB 12 MAG 12 22 PHASE S22 MAG PHASE dB Degrees dB Degrees 1000 2 0 47 7 100 0 47 5 148 0 1100 2 1 48 6 2 2 51 6 55 0 100 6 107 3 117 2 45 7 42 9 150 0 153 5 39 6 160 2 58 6 129 5 37 0 168 5 61 9 62 3 146 5 164 2 34 1 178 5 32 9 162 8 61 6
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MAXIM MAX2657/MAX2658 handbook