GPS/GNSS Low-Noise Amplifiers High-Power Gain: 19dB (MAX2657) Ult
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GPS/GNSS Low-Noise Amplifiers
High-Power Gain: 19dB (MAX2657) Ultra-Low-Noise Figure: 0.8dB Integrated Output Matching Circuit Supply Current: 4.1mA (MAX2657) Wide Supply Voltage Range: 1.6V 3.3V Bill Materials: Inductor, Capacitors Small Footprint: 0.86mm 1.26mm Thin Profile: 0.65mm 0.4mm-Pitch Wafer-Level Package (WLP)
MAX2657/MAX2658
MAX2657/MAX2658 high-gain, low-noise amplifiers (LNAs) designed Galileo, GLONASS applications. Designed Maxim's advanced SiGe process, devices achieve high gain ultra-low-noise figure while maximizing input-referred compression point 3rd-order intercept point. MAX2657/MAX2658 operate from +1.6V +3.3V single supply. MAX2657 optimized current. MAX2658 optimized high linearity. shutdown feature device reduces supply current less than 1µA. MAX2657/MAX2658 available very small, lead-free, RoHS-compliant, 0.86mm 1.26mm 0.65mm, wafer-level package (WLP).
Applications
Automotive Navigation Location-Enabled Mobile Devices Telematics (Asset Tracking Management) Personal Navigation Devices (PNDs) Cellular Phones with Notebook PCs/Ultra-Mobile Recreational, Marine Navigation Avionics Watches
Ordering Information
PART MAX2657EWT+T TEMP RANGE -40°C +85°C PIN-PACKAGE
MAX2658EWT+T -40°C +85°C +Denotes lead(Pb)-free/RoHS-compliant package. Tape reel.
Configuration/Typical Application Circuit
SHDN
MAX2657 MAX2658
BIAS
RFOUT
OUTPUT
INPUT RFIN
6.2nH (MAX2657) 820pF (MAX2657) 33nF
2.7nH (MAX2658) 1500pF (MAX2658)
Maxim Integrated Products
pricing, delivery, ordering information, please contact Maxim Direct 1-888-629-4642, visit Maxim's website www.maxim-ic.com.
GPS/GNSS Low-Noise Amplifiers MAX2657/MAX2658
ABSOLUTE MAXIMUM RATINGS
.-0.3V +3.6V Other Pins .-0.3V Operating 0.3V) Maximum Input Power .+5dBm Continuous Power Dissipation +70°C) 6-Bump (derates 10.5mW/°C above +70°C) .840mW Maximum Current into Input .10mA Operating Temperature Range .-40°C +85°C Junction Temperature .+150°C Storage Temperature Range .-65°C +160°C Lead Temperature (soldering, 10s).Reflow Profile (Note
Note Refer Application Note 1891: Wafer-Level Packaging (WLP) Applications.
CAUTION! SENSITIVE DEVICE
Stresses beyond those listed under "Absolute Maximum Ratings" cause permanent damage device. These stress ratings only, functional operation device these other conditions beyond those indicated operational sections specifications implied. Exposure absolute maximum rating conditions extended periods affect device reliability.
ELECTRICAL CHARACTERISTICS
(MAX2657/MAX2658 kit. 1.6V 3.3V, -40°C +85°C, signals applied. Typical values 2.85V +25°C, unless otherwise noted.) (Note
PARAMETER Supply Voltage Supply Current Digital Input Logic-High Digital Input Logic-Low Digital Input Current SHDN high Shutdown mode, SHDN 0.45 MAX2657 MAX2658 CONDITIONS 2.85 UNITS
ELECTRICAL CHARACTERISTICS
(MAX2657/MAX2658 kit. 1.6V 3.3V, -40°C +85°C, fRFIN 1575.42MHz. Typical values 2.85V +25°C, unless otherwise noted.) (Note
PARAMETER Frequency band 2.85V Power Gain 1.6V Noise Figure In-Band 3rd-Order Input Intercept (Note Point Out-of-Band 3rd-Order Input Intercept Point (Note MAX2657 MAX2658 MAX2657 MAX2658 1.8V 3.3V MAX2657 MAX2658 MAX2657 MAX2658 CONDITIONS 1575.42 19.5 17.7 19.4 17.6 -3.5 +4.5 +2.5 UNITS
GPS/GNSS Low-Noise Amplifiers
ELECTRICAL CHARACTERISTICS (continued)
(MAX2657/MAX2658 kit. 1.6V 3.3V, -40°C +85°C, fRFIN 1575.42MHz. Typical values 2.85V +25°C, unless otherwise noted.) (Note
PARAMETER Input Compression point Input Return Loss Output Return Loss Reverse Isolation (Note CONDITIONS MAX2657 MAX2658 -12.5 UNITS
MAX2657/MAX2658
Note Note Note Note
limits guaranteed test +85°C guaranteed design characterization -40°C +25°C. Measured with tones located 1MHz 2MHz offset from center band with -30dBm/tone MAX2657 -27dBm/tone MAX2658. Measured with input tones 1713MHz (-25dBm) 1851MHz (-49dBm). Measured with tone located 5MHz offset from center band.
Typical Operating Characteristics
(MAX2657/MAX2658 kit. Typical values 2.85V, +25°C, fRFIN 1575.42MHz, unless otherwise noted.)
INPUT RETURN LOSS FREQUENCY
MAX2657 toc01
GAIN FREQUENCY
MAX2657 toc02
REVERSE ISOLATION FREQUENCY
MAX2657 toc03
MAX2658
MAX2657 GAIN (dB) MAX2658
1000 1500 FREQUENCY (MHz) 2000 MAX2658
|S11| (dB)
1000 1500 FREQUENCY (MHz) 2000 2500 MAX2657
|S12| (dB)
MAX2657
1000
1500 FREQUENCY (MHz)
2000
2500
2500
GPS/GNSS Low-Noise Amplifiers MAX2657/MAX2658
Typical Operating Characteristics (continued)
(MAX2657/MAX2658 kit. Typical values 2.85V, +25°C, fRFIN 1575.42MHz, unless otherwise noted.)
MAX2657 IN-BAND IIP3 SUPPLY VOLTAGE TEMPERATURE (TWO TONES LOCATED 1MHz 2MHz OFFSET WITH -35dBm/TONE)
MAX2657 toc04 MAX2657 toc05
OUTPUT RETURN LOSS FREQUENCY
MAX2658 1000 1500 FREQUENCY (MHz) 2000 2500
MAX2658 IN-BAND IIP3 SUPPLY VOLTAGE TEMPERATURE (TWO TONES LOCATED 1MHz 2MHz OFFSET WITH -30dBm/TONE)
MAX2657 toc06
MAX2657
IIP3 (dBm) -40°C +25°C +25°C +85°C SUPPLY VOLTAGE SUPPLY VOLTAGE
IIP3 (dBm)
|S22| (dB)
-40°C +85°C
MAX2657 OUT-OF-BAND IIP3 SUPPLY VOLTAGE TEMPERATURE (TONE 1713MHz, -25dBm; TONE 1851MHz, -49dBm)
MAX2657 toc07
MAX2658 OUT-OF-BAND IIP3 SUPPLY VOLTAGE TEMPERATURE (TONE 1713MHz, -25dBm; TONE 1851MHz, -49dBm)
MAX2657 toc08
+85°C IIP3 (dBm) +25°C
IIP3 (dBm) +85°C -40°C +25°C
SUPPLY VOLTAGE
-40°C
SUPPLY VOLTAGE
GPS/GNSS Low-Noise Amplifiers
Typical Operating Characteristics (continued)
(MAX2657/MAX2658 kit. Typical values 2.85V, +25°C, fRFIN 1575.42MHz, unless otherwise noted.)
MAX2657/MAX2658
MAX2657 INPUT P1dB COMPRESSION SUPPLY VOLTAGE TEMPERATURE
MAX2657 toc09
MAX2658 INPUT P1dB COMPRESSION SUPPLY VOLTAGE TEMPERATURE
MAX2657 toc10
INPUT P1dB (dBm) -40°C +85°C +25°C
INPUT P1dB (dBm) -40°C +85°C
+25°C
SUPPLY VOLTAGE
SUPPLY VOLTAGE
GPS/GNSS Low-Noise Amplifiers MAX2657/MAX2658
Description
BUMP NAME SHDN RFOUT RFIN FUNCTION Shutdown Input. logic-low disables device. Output. RFOUT internally matched incorporates internal DC-blocking capacitor. Input. Requires DC-blocking capacitor external matching components. Supply Voltage. Bypass ground with 33nF capacitor close possible Ground. Connect ground plane.
Detailed Description
MAX2657/MAX2658 LNAs designed Galileo, GLONASS applications. devices feature power-shutdown control mode eliminate need external supply switch. devices achieve high gain ultra-low-noise figure.
Shutdown
MAX2657/MAX2658 include shutdown feature turn entire chip. Apply logic-high SHDN place part active mode, logic-low place part shutdown mode.
Applications Information
properly designed essential microwave circuit. controlled-impedance lines high-frequency inputs outputs. Bypass with decoupling capacitors located close device. long lines, necessary decoupling capacitors. Locate these additional capacitors further away from device package. Proper grounding pins essential. uses topside ground, connect directly pins. board where ground component layer, connect pins board with multiple vias close package.
Input Output Matching
MAX2657/MAX2658 require off-chip input matching. Only inductor series with DC-blocking capacitor needed form input matching circuit. Typical Application Circuit shows recommended input-matching network. These values optimized best simultaneous gain, noise figure, return loss performance. Tables list typical device parameters values. MAX2657/MAX2658 integrate on-chip output matching output, eliminating need external matching components. value input coupling capacitor affects IIP3. smaller coupling capacitor results lower IIP3.
Table MAX2657 Typical S-Parameter Values K-Factor
FREQ. (MHz) 1000 1100 1200 1300 1400 1500 1575 1600 1700 1800 1900 2000 (dB) -2.0 -2.1 -2.2 -2.4 -2.7 -6.5 -4.3 -4.6 -5.4 -5.2 -4.8 -4.5 PHASE (Degrees) -47.7 -48.6 -51.6 -55.0 -58.6 -61.9 -62.3 -61.6 -55.3 -49.8 -47.3 -46.7 (dB) 12.0 14.0 16.2 17.1 17.3 17.1 15.7 13.9 12.7 PHASE (Degrees) -100.0 -100.6 -107.3 -117.2 -129.5 -146.5 -164.2 -170.6 165.5 145.8 135.2 127.3 (dB) -47.5 -45.7 -42.9 -39.6 -37.0 -34.1 -32.9 -32.8 -32.5 -33.8 -35.2 -36.7 PHASE (Degrees) -148.0 -150.0 -153.5 -160.2 -168.5 178.5 162.8 156.6 136.5 121.6 113.8 109.6 (dB) -1.0 -1.0 -1.4 -2.1 -3.6 -7.4 -15.3 -20.6 -9.5 -4.5 -2.7 -1.8 PHASE (Degrees) -55.0 -58.1 -65.4 -74.1 -85.5 -100.0 -100.8 -78.9 10.0 -2.4 -13.2 -21.2
GPS/GNSS Low-Noise Amplifiers
Table MAX2658 Typical S-Parameter Values K-Factor
FREQ. (MHz) 1000 1100 1200 1300 1400 1500 1575 1600 1700 1800 1900 2000 (dB) -3.0 -3.3 -3.5 -3.8 -4.3 -4.9 -5.3 -5.4 -5.5 -5.3 -5.1 -4.9 PHASE (Degrees) -57.0 -58.2 -60.0 -62.3 -63.3 -62.0 -59.7 -58.5 -53.7 -50.3 -48.0 -46.3 (dB) 10.8 11.6 13.4 14.9 15.9 16.6 16.6 16.5 15.8 14.7 13.4 12.7 PHASE (Degrees) -120.0 -124.5 -134.6 -148.0 -162.3 -178.9 168.0 163.9 149.3 136.8 130.0 123.9 (dB) -43.0 -42.1 -39.3 -37.2 -35.4 -33.9 -33.5 -33.6 -33.6 -34.2 -35.1 -35.8 PHASE (Degrees) -154.0 -155.0 -160.5 -168.3 -178.2 171.0 161.7 157.5 148.3 142.5 139.6 138.6 (dB) -1.3 -1.6 -2.4 -4.0 -7.3 -14.5 -19.6 -16.7 -9.0 -5.7 -4.0 -3.0 PHASE (Degrees) -65.0 -70.2 -79.6 -90.0 -101.0 -100.6 -26.0 -6.0 -2.8 -9.6 -15.0
MAX2657/MAX2658
Table MAX2657 Typical Noise Parameters (VCC 2.85V, +25°C)
FREQUENCY (MHz) 1550 1560 1570 1575 1580 1590 1600 FMIN (dB) 0.68 0.68 0.68 0.68 0.68 0.68 0.68 |OPT| 0.44 0.44 0.44 0.44 0.44 0.44 0.44 |OPT| ANGLE 47.7 48.1 48.3 48.5 48.6 48.9 49.2 8.39 8.38 8.37 8.36 8.36 8.35 8.34
Table MAX2658 Typical Noise Parameters (VCC 2.85V, +25°C)
FREQUENCY (MHz) 1550 1560 1570 1575 1580 1590 1600 FMIN (dB) 0.68 0.68 0.68 0.68 0.68 0.69 0.69 |OPT| 0.28 0.28 0.28 0.28 0.28 0.28 0.28 |OPT| ANGLE 88.0 88.4 88.8 89.0 89.2 89.6 90.0 4.48 4.48 4.48 4.48 4.48 4.47 4.47
GPS/GNSS Low-Noise Amplifiers MAX2657/MAX2658
Chip Information
PROCESS: SiGe BiCMOS
PACKAGE TYPE
Package Information
latest package outline information land patterns, www.maxim-ic.com/packages. PACKAGE CODE W61B1+1 DOCUMENT 21-0217
Maxim cannot assume responsibility circuitry other than circuitry entirely embodied Maxim product. circuit patent licenses implied. Maxim reserves right change circuitry specifications without notice time.
_Maxim Integrated Products, Gabriel Drive, Sunnyvale, 94086 408-737-7600 2009 Maxim Integrated Products Maxim registered trademark Maxim Integrated Products, Inc.
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