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EVALUATION KIT AVAILABLE
MAX2667/MAX2669 GPS/GNSS Ultra-Low-Noise-Figure LNAs
General Description
The MAX2667/MAX2669 high-gain, low-noise amplifiers (LNAs) are designed for GPS L1, Galileo, and GLONASS applications. Designed in Maxim’s advanced SiGe process, the devices achieve a high gain and our lowest noise figure, while maximizing the input-referred 1dB compression point and the 3rd-order intercept point.
The devices operate from a +1.6V to +3.3V single supply. The MAX2667 is optimized for low current. The MAX2669 is optimized for high linearity. The shutdown feature in the device reduces the supply current to be less than 10μA. The devices are available in a very small, lead-free, RoHS-compliant, 0.86mm x 1.26mm x 0.65mm wafer-level package (WLP).
Applications
Automotive Navigation
Location-Enabled Mobile Devices
Telematics (Asset Tracking and Management)
Personal Navigation Devices (PNDs)
Cellular Phones with GPS
Notebook PCs/Ultra-Mobile PCs
Recreational, Marine Navigation
Avionics
Watches
Features
S 19dB High-Power Gain (MAX2667) S Ultra-Low Noise Figure: 0.65dB S Integrated 50Ω Output Matching Circuit S Low 4.1mA Supply Current (MAX2667) S Wide 1.6V to 3.3V Supply Voltage Range S Low Bill of Materials: Two Inductors, Three
Capacitors, and One Resistor S Small Footprint: 0.86mm x 1.26mm S Thin Profile: 0.65mm S 0.4mm-Pitch Wafer-Level Package (WLP)
Ordering Information
PART
TEMP RANGE PIN-PACKAGE
MAX2667EWT+T
-40°C to +85°C 6 WLP
MAX2669EWT+T
-40°C to +85°C 6 WLP
+Denotes a lead(Pb)-free/RoHS-compliant package. T = Tape and reel.
Typical Application Circuit
RF INPUT
C3
BIAS
L2 C1 L1
+
A1
RFIN B1
MAX2667 MAX2669 BIAS
A2 RFOUT
25kΩ
SHDN RF OUTPUT
B2 VCC
VCC C2
GNDAC
C1
C2 GNDDC
L2 = 100nH C3 = 39pF
L1 = 6.2nH (MAX2667) C1 = 100nF (MAX2667) C2 = 39pF
L1 = 3.3nH (MAX2669) C1 = 100nF (MAX2669)
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
19-5518; Rev 1; 9/12
MAX2667/MAX2669 GPS/GNSS Ultra-Low-Noise-Figure LNAs
ABSOLUTE MAXIMUM RATINGS
VCC to GND_.........................................................-0.3V to +3.6V RFOUT and BIAS to GND_...... -0.3V to (Operating VCC + 0.3V) Maximum RF Input Power................................................ +5dBm Continuous Power Dissipation (TA = +70°C)
WLP (derates 10.5mW/°C above +70°C).....................840mW
Maximum Current into RF Input..........................................10mA Operating Temperature Range........................... -40°C to +85°C Junction Temperature......................................................+150°C Storage Temperature Range............................. -65°C to +160°C Soldering Temperature (reflow) (Note 1).........................+260°C
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.
PACKAGE THERMAL CHARACTERISTICS (Note 2)
Junction-to-Ambient Thermal Resistance (qJA)...........95°C/W
Note 2: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial.
DC ELECTRICAL CHARACTERISTICS
(MAX2667/MAX2669 EV kit. VCC = 1.6V to 3.3V, no RF signals are applied, TA = -40°C to +85°C. Typical values are at VCC = 2.85V and TA = +25°C, unless otherwise noted.) (Note 2)
PARAMETER Supply Voltage
Supply Current
Digital Input Logic-High Digital Input Logic-Low
CONDITIONS
SHDN = high
MAX2667 MAX2669
Shutdown mode, SHDN = low
TA = +25°C TA = +25°C
MIN TYP MAX UNITS
1.6 2.85 3.3
V
4.1 7.7
mA
10 FA
1.2 V
0.45
V
AC ELECTRICAL CHARACTERISTICS
(MAX2667/MAX2669 EV kit. VCC = 1.6V to 3.3V, fRFIN = 1575.42MHz, TA = -40°C to +85°C. Typical values are at VCC = 2.85V and TA = +25°C, unless otherwise noted.) (Note 2)
PARAMETER RF Frequency
Power Gain
Noise Figure
L1 band VCC = 2.85V
VCC = 1.6V
CONDITIONS
MAX2667 MAX2669 MAX2667 MAX2669 VCC = 1.8V VCC = 3.3V
MIN
15.0 14.6 14.8 14.3
TYP 1575.42
19.5 17.7 19.4 17.6 0.65 0.65
MAX
UNITS MHz
dB
dB
2 Maxim Integrated
MAX2667/MAX2669 GPS/GNSS Ultra-Low-Noise-Figure LNAs
AC ELECTRICAL CHARACTERISTICS (continued)
(MAX2667/MAX2669 EV kit. VCC = 1.6V to 3.3V, fRFIN = 1575.42MHz, TA = -40°C to +85°C. Typical values are at VCC = 2.85V and TA = +25°C, unless otherwise noted.) (Note 2)
PARAMETER In-Band 3rd-Order Input Intercept Point Out-of-Band 3rd-Order Input Intercept Point
Input 1dB Compression Point
Input R.