MAX2686L, 93L Datasheet by Maxim Integrated

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General Description
The MAX2686L/MAX2693L low-noise amplifiers (LNAs)
are designed for GPS L1, Galileo, and GLONASS applica-
tions. Designed in Maxim’s advanced SiGe process, the
devices achieve high gain and low noise figure while maxi-
mizing the input-referred 1dB compression point and the
3rd-order intercept point. Both devices include an internal
LDO ideal for battery-powered applications. For current-
sensitive applications, the MAX2693L achieves excellent
performance while consuming only 1.8mA current.
The devices operate from a +1.6V to +4.2V single sup-
ply. The shutdown feature reduces the supply current to
less than 20µA. The devices are available in a very small,
lead-free, RoHS-compliant, 0.86mm x 0.86mm x 0.65mm
wafer-level package (WLP).
Applications
●Telematics (Asset Tracking and Management)
●Cellular Phones with GPS
●Notebook PCs/Ultra-Mobile PCs
●Recreational, Marine Navigation
●Watches
●Digital Cameras
Benefits and Features
●High Power Gain: 19dB (MAX2686L)
●Low Noise Figure: 0.88dB (MAX2686L)
● Integrated 50Ω Output Matching Circuit
●Low Supply Current: 1.8mA (MAX2693L)
●Wide Supply Voltage Range: 1.6V to 4.2V
●Low Bill of Materials: One Inductor, Two Capacitors
●Small Footprint: 0.86mm x 0.86mm
●0.4mm Pitch WLP
Ordering Information appears at end of data sheet.
19-6258; Rev 1; 2/15
MAX2686L
MAX2693L
A1 A2
B1 B2
ENABLE = VCC
SHDN = GND
GND
R1
25kΩ
RF
OUTPUT
RFOUT
LDO
VCC
VCC
C2
RF
INPUT
C1 L1 RFIN
MAX2686L
L1 = 7.3nH
C1 = 100nF
C2 = 10pF
L1 = 12nH
C1 = 100nF
C2 = 10pF
MAX2693L
+
MAX2686L/MAX2693L GPS/GNSS Low-Noise Amplifiers
with Integrated LDO
Typical Operating Circuit
EVALUATION KIT AVAILABLE
VCC to GND...........................................................-0.3V to +4.2V
Other Pins to GND................-0.3V to (+ Operating VCC + 0.3V)
Maximum RF Input Power................................................+5dBm
Continuous Power Dissipation (TA = +70°C)
WLP (derates 9.7mW/°C above +70°C).......................776mW
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
(MAX2686L /MAX2693L EV kit, VCC = 1.6V to 4.2V, TA = -40°C to +85°C, no RF signals are applied. Typical values are at VCC = 3.3V
and TA = +25°C, unless otherwise noted.) (Note 2)
(MAX2686L/MAX2693L EV kit, VCC = 1.6V to 4.2V, TA = -40°C to +85°C, fRFIN = 1575.42MHz. Typical values are at VCC = 3.3V and
TA = +25°C, unless otherwise noted.) (Note 2)
PARAMETER CONDITIONS MIN TYP MAX UNITS
Supply Voltage 1.6 3.3 4.2 V
Supply Current
SHDN = high MAX2686L 5 mA
MAX2693L 1.8
Shutdown mode, VSHDN = 0V 20 µA
Digital Input Logic-High (Note 3) 1.2 V
Digital Input Logic-Low (Note 3) 0.45 V
PARAMETER CONDITIONS MIN TYP MAX UNITS
RF Frequency L1 band 1575.42 MHz
Power Gain
VCC = 4.2V (Note 4)
MAX2686L 14.65 19.0
dB
MAX2693L 11.6 18.4
VCC = 1.6V MAX2686L 14.85 19.1
MAX2693L 11.6 18.7
Noise Figure VCC = 1.6V to 4.2V MAX2686L 0.88 dB
MAX2693L 1.05
In-Band 3rd-Order Input Intercept
Point (Note 5) MAX2686L -4.1 dBm
MAX2693L -14.3
Out-of-Band 3rd-Order Input
Intercept Point (Note 6) MAX2686L -0.1 dBm
MAX2693L -13.9
Input 1dB Compression Point (Note 7) MAX2686L -12.1 dBm
MAX2693L -11.0
Input Return Loss MAX2686L 11.2 dB
MAX2693L 10.7
MAX2686L/MAX2693L GPS/GNSS Low-Noise Amplifiers
with Integrated LDO
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Note 1: Refer to Application Note 1891: Wafer-Level Packaging (WLP) and Its Applications.
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.
CAUTION! ESD SENSITIVE DEVICE
DC Electrical Characteristics
AC Electrical Characteristics
Absolute Maximum Ratings
MAXZSEEL MAXZESEL REVERSE ISOLATION wk MAXHEBL INPUT RETURN LOSS \\ nay \ | ”I GAW (day FREQUENCY [MHz] FREQUENCY [MHz]
(MAX2686L/MAX2693L EV kit, VCC = 1.6V to 4.2V, TA = -40°C to +85°C, fRFIN = 1575.42MHz. Typical values are at VCC = 3.3V and
TA = +25°C, unless otherwise noted.) (Note 2)
Note 2: Min and max limits guaranteed by test at TA = +25°C and guaranteed by design and characterization at TA = -40°C and
TA = +85°C, unless otherwise noted.
Note 3: Min and max limits guaranteed by test at TA = +25°C.
Note 4: Min limit guaranteed by design and characterization.
Note 5: Measured with the two tones located at 1MHz and 2MHz offset from the center of the GPS band with -30dBm/tone.
Note 6: Measured with input tones at 1713MHz (-27dBm) and 1851MHz (-39dBm).
Note 7: Measured with a tone located at the center of the GPS band.
(MAX2686L/MAX2693L EV kit. Typical values are at VCC = 3.3V, TA = +25°C, and fRFIN = 1575.42MHz, unless otherwise noted.)
PARAMETER CONDITIONS MIN TYP MAX UNITS
Output Return Loss MAX2686L 22.0 dB
MAX2693L 14.3
Reverse Isolation MAX2686L 41.0 dB
MAX2693L 40.0
MAX2686L INPUT RETURN LOSS
vs. FREQUENCY
MAX2686L toc01
FREQUENCY (MHz)
S11 (dB)
200015001000
-20
-10
0
-30
500
2500
VCC = 3.2V
+25°C
VCC = 4.2V
VCC = 1.6V
MAX2686L
GAIN vs. FREQUENCY
MAX2686L toc02
FREQUENCY (MHz)
GAIN (dB)
200015001000
5
10
15
20
0
500
2500
VCC = 4.2V
VCC = 1.6V
VCC = 3.2V
+25°C
MAX2686L REVERSE ISOLATION
vs. FREQUENCY
MAX2686L toc03
FREQUENCY (MHz)
|S12| (dB)
200015001000
-60
-50
-40
-30
-70
500
2500
1.6V
3.2V
4.2V
MAX2686L/MAX2693L GPS/GNSS Low-Noise Amplifiers
with Integrated LDO
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AC Electrical Characteristics (continued)
Typical Operating Characteristics
MAX2686L
MAXZEKSL OUT-OF-BAND IIP3 MAXZEKGL IN-EAND I|P3 vs. SUPPLY VOLTAGE E MAXZEBEL OUTPUT RETURN LOSS T \/ ./ J \ \ / ) F4 \ 2 \ I \ I“ > I I I \ A SuPPLY VOLTAGE (v) MAXZEBEL INPUT P1dB COMPRESSION MAXZGBEL NOISE FIGURE vs. SUPPLY RE 2 2 A u i E § 3 INPUT F‘IdEIdE/M NOISEHGUREW / iv
(MAX2686L/MAX2693L EV kit. Typical values are at VCC = 2.85V, TA = +25°C, and fRFIN = 1575.42MHz, unless otherwise noted.)
MAX2686L OUTPUT RETURN LOSS
vs. FREQUENCY
MAX2686L toc04
FREQUENCY (MHz)
|S22| (dB)
200015001000
-20
-15
-10
-5
0
-25
500
2500
VCC = 1.6V VCC = 3.2V
VCC = 4.2V
+25°C
MAX2686L IN-BAND IIP3 vs. SUPPLY VOLTAGE
AND TEMPERATURE (TWO TONES LOCATED AT
1MHz AND 2MHz OFFSET WITH -30dBm/TONE)
MAX2686L toc05
SUPPLY VOLTAGE (V)
IIP3 (dBm)
4.13.63.12.62.1
-5
-4
-3
-6
1.6
+85°C
-40°C
+25°C
MAX2686L OUT-OF-BAND IIP3
vs. SUPPLY VOLTAGE AND TEMPERATURE
(TONE 1 AT 1713MHz, -27dBm;
TONE 2 AT 1851MHz, -39dBm)
MAX2686L toc06
SUPPLY VOLTAGE (V)
IIP3 (dBm)
4.03.63.22.82.42.0
-1
1
3
-3
1.6
-40°C
+25°C
+85°C
MAX2686L toc07
3.4 3.83.02.6
-13
-11
-9
-15
2.2 4.2
-40°C
+25°C
+85°C
MAX2686L NOISE FIGURE vs. SUPPLY
VOLTAGE AND TEMPERATURE
MAX2686L toc08
SUPPLY VOLTAGE (V)
NOISE FIGURE (dB)
4.03.63.22.82.42.0
0.8
1.2
1.6
0.4
1.6
-40°C
+25°C
+85°C
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MAX2686L/MAX2693L GPS/GNSS Low-Noise Amplifiers
with Integrated LDO
Typical Operating Characteristics (continued)
MAX2686L
511 (am IZI MAXZESIIL INPUT RETURN LOSS \ \ MAX2693L REVERSE ISOLATION 3: GAIN (day Ill MAXZEQCIL GAIN vs. FRQLIENCV FREQUENCY [MHz] MAXZEQIIL OUTPUT RETURN LOSS \\ // Jb
(MAX2686L/MAX2693L EV kit. Typical values are at VCC = 2.85V, TA = +25°C, and fRFIN = 1575.42MHz, unless otherwise noted.)
MAX2693L REVERSE ISOLATION
vs. FREQUENCY
MAX2686L toc11
FREQUENCY (MHz)
|
S12
|
(dB)
200015001000
-60
-50
-40
-30
-70
500
2500
1.6V
3.2V
4.2V
+25°C
MAX2693L INPUT RETURN LOSS
vs. FREQUENCY
MAX2686L toc09
FREQUENCY (MHz)
S11 (dB)
200015001000
-12
-8
-4
0
-16
500
2500
VCC = 4.2V VCC = 3.2V
VCC = 1.6V
+25°C
MAX2693L GAIN vs. FRQUENCY
MAX2686L toc10
FREQUENCY (MHz)
GAIN (dB)
200015001000
0
10
20
-10
500
2500
VCC = 4.2V
VCC = 3.2V
VCC = 1.6V
+25°C
MAX2693L OUTPUT RETURN LOSS
vs. FREQUENCY
MAX2686L toc12
FREQUENCY (MHz)
|
S22
|
(dB)
200015001000
-12
-8
-4
0
-16
500
2500
VCC = 4.2V
VCC = 1.6V
VCC = 3.2V
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MAX2686L/MAX2693L GPS/GNSS Low-Noise Amplifiers
with Integrated LDO
Typical Operating Characteristics (continued)
MAX2693L
upmamy mm was mam MAXZSSSL IN-EAND ||P3 vs. SUPPLY 7_F¢ SuPPLY VOLTAGE (v) MAX2693L INPUT P1 dB COMPRESSION 7/“ 4/\ E SUPPLV VOLTAGE W) Hmmamx NowsEHGuRE (day MAXZSSSL OUT-OF-BAND IIP3 >\_/ \,WW SUPPLV VOLTAGE W) MAX2693L NOISE FIGURE m SUPPLY VOLTAGE (v)
(MAX2686L/MAX2693L EV kit. Typical values are at VCC = 2.85V, TA = +25°C, and fRFIN = 1575.42MHz, unless otherwise noted.)
MAX2693L IN-BAND IIP3 vs. SUPPLY
VOLTAGE AND TEMPERATURE
(TWO TONES LOCATED AT 1MHz AND
2MHz OFFSET WITH -30dBm/TONE)
MAX2686L toc13
SUPPLY VOLTAGE (V)
IIP3 (dBm)
4.13.63.12.62.1
-16
-15
-17
1.6
-40°C
+25°C
+85°C
MAX2693L OUT-OF-BAND IIP3
vs. SUPPLY VOLTAGE AND TEMPERATURE
(TONE 1 AT 1713MHz, -27dBm;
TONE 2 AT 1851MHz, -39dBm)
MAX2686L toc14
SUPPLY VOLTAGE (V)
IIP3 (dBm)
4.03.63.22.82.42.0
-14
-13
-15
1.6
-40°C
+85°C
+25°C
MAX2686L toc15
4.03.63.22.82.42.0
-16
-14
-12
-10
-18
1.6
-40°C
+85°C
+25°C
MAX2693L NOISE FIGURE
vs. SUPPLY VOLTAGE AND TEMPERATURE
MAX2686L toc16
SUPPLY VOLTAGE (V)
NOISE FIGURE (dB)
4.03.63.22.82.42.0
0.8
1.2
1.6
0.4
1.6
-40°C
+25°C
+85°C
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MAX2686L/MAX2693L GPS/GNSS Low-Noise Amplifiers
with Integrated LDO
Typical Operating Characteristics (continued)
MAX2693L
TOP VIEW
Detailed Description
The MAX2686L/MAX2693L are LNAs designed for GPS
L1, Galileo, and GLONASS applications. The devices fea-
ture an optional power-shutdown control mode to elimi-
nate the need for an external supply switch. The devices
achieve high gain and low noise figure in an ultra-small
package ideal for space-sensitive applications. These
integrated ICs eliminate the need for an external LDO.
Input and Output Matching
The devices require an off-chip input matching. Only an
inductor in series with a DC-blocking capacitor is needed
to form the input matching circuit. The Typical Operating
Circuit shows the recommended input-matching network.
These values are optimized for the best simultaneous
gain, noise figure, and return loss performance. The value
of the input coupling capacitor affects IIP3. A smaller
coupling capacitor results in lower IIP3. The devices inte-
grate an on-chip output matching to 50Ω at the output,
eliminating the need for external matching components.
Table 1 and Table 2 list typical device S parameters and
Kf values. Typical noise parameters are shown in Table 3
and Table 4.
ENABLE/(SHDN)
The devices include a shutdown feature to turn off the
entire chip. The devices are placed in active mode by
default once VCC is applied, due to the off-chip pullup
resistor to VCC at the RFOUT bump. To shut down the part,
apply a logic-low to the RFOUT bump through an external
resistor with an adequate value, e.g., 25kΩ, in order not to
load the RF output signal during active operation.
To enable the part, apply a logic-high to the RFOUT bump
through the external 25kΩ resistor.
BUMP NAME FUNCTION
A1 VCC Supply Voltage. Bypass to ground with a 10pF capacitor as close as possible to the IC.
A2 RFOUT
ENABLE/(SHDN)
RF Output. RFOUT is internally matched to 50Ω. Pulling the DC high through the 25kΩ resistor
enables the IC. RFOUT(SHDN) can be pulled to a DC low through a 25kΩ resistor to shut down
the IC.
B1 RFIN RF Input. Requires a DC-blocking capacitor and external matching components.
B2 GND Ground. Connect to the PCB ground plane.
WLP
TOP VIEW
MAX2686L
MAX2693L
RFIN
VCC
GND
RFOUT
ENABLE/(SHDN
)
A1 A2
B1 B2
+
MAX2686L/MAX2693L GPS/GNSS Low-Noise Amplifiers
with Integrated LDO
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Bump Configuration
Bump Description
FREQ
(MHz)
S11 MAG
(dB)
S11
PHASE
(DEGREES)
S21 MAG
(dB)
S21
PHASE
(DEGREES)
S12 MAG
(dB)
S12
PHASE
(DEGREES)
S22 MAG
(dB)
S22
PHASE
(DEGREES)
Kf
1000 -2.7 -88.3 7.9 162.0 -56.7 101.9 -1.9 -153.8 16.1
1100 -2.9 -95.0 9.6 150.5 -48.5 57.5 -2.4 -169.9 9.8
1200 -3.2 -101.7 11.2 136.9 -45.5 64.8 -3.1 172.8 7.4
1300 -3.4 -107.4 12.8 122.2 -49.2 51.0 -4.4 153.8 6.6
1400 -3.5 -113.3 14.4 104.8 -47.4 1.8 -6.8 132.5 6.9
1500 -3.3 -120.2 16.0 85.4 -50.7 19.3 -11.9 102.3 7.8
1575 -3.5 -125.7 16.8 66.9 -44.6 29.9 -26.0 46.7 5.9
1600 -3.7 -126.8 16.8 58.4 -43.4 15.5 -24.3 -79.5 5.1
1700 -3.6 -131.1 16.5 34.7 -49.8 -7.5 -10.1 -125.4 6.5
1800 -3.5 -139.0 16.1 12.9 -51.0 39.5 -5.4 -148.1 4.0
1900 -3.7 -146.3 15.2 -7.7 -41.9 7.5 -3.0 -169.7 2.2
2000 -4.0 -152.0 13.8 -24.4 -41.8 -10.7 -1.9 170.5 2.0
FREQ
(MHz)
S11 MAG
(dB)
S11
PHASE
(DEGREES)
S21 MAG
(dB)
S21
PHASE
(DEGREES)
S12 MAG
(dB)
S12
PHASE
(DEGREES)
S22 MAG
(dB)
S22
PHASE
(DEGREES)
Kf
1000 -1.0 -77.4 -2.5 -148.6 -55.5 78.6 -0.9 -138.2 16.1
1100 -1.1 -84.8 0.1 -159.7 -51.0 85.5 -1.2 -154.2 9.8
1200 -1.2 -92.5 2.7 -172.2 -48.0 70.0 -1.6 -172.0 7.4
1300 -1.3 -99.4 5.6 171.7 -46.4 56.0 -2.3 167.2 6.6
1400 -1.5 -106.5 8.4 152.1 -45.9 35.6 -3.8 140.1 6.9
1500 -1.6 -113.2 11.0 124.7 -46.3 22.2 -8.0 96.8 7.8
1575 -1.6 -118.5 12.2 99.5 -44.0 38.3 -14.8 23.5 5.9
1600 -1.7 -120.6 12.3 88.4 -42.4 22.2 -14.9 -33.4 5.1
1700 -1.9 -126.6 11.5 55.8 -45.3 -9.5 -6.5 -117.5 6.5
1800 -1.8 -133.6 10.0 30.2 -43.6 12.4 -3.3 -152.3 4.0
1900 -2.0 -140.7 8.4 10.0 -40.1 -8.1 -2.0 -176.5 2.2
2000 -2.1 -146.9 6.9 -4.9 -39.6 -29.9 -1.5 164.9 2.0
FREQUENCY (MHz) FMIN (dB) |ΓOPT| |ΓOPT| ANGLE RN (Ω)
1550 0.70 0.43 45 8.45
1560 0.70 0.43 45 8.43
1570 0.70 0.42 45 8.42
1580 0.70 0.42 45 8.41
1590 0.70 0.42 46 8.39
1600 0.71 0.42 46 8.38
MAX2686L/MAX2693L GPS/GNSS Low-Noise Amplifiers
with Integrated LDO
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Table 1. MAX2686L Typical S Parameter Values and K-Factor
Table 2. MAX2693L Typical S Parameter Values and K-Factor
Table 3. MAX2686L Simulated Typical Noise Parameters (VCC = 3.3V, TA = +25°C)
Applications Information
A properly designed PCB is essential to any RF micro-
wave circuit. Use controlled-impedance lines on all high-
frequency inputs and outputs. Bypass VCC with decou-
pling 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 bump is
essential. If the PCB uses a topside RF ground, connect
it directly to the GND bump. For a board where the ground
is not on the component layer, connect the GND bump
to the board with multiple vias close to the package. For
general layout guidelines, refer to www.maximintegrated.
com/app-notes/index.mvp/id/5100.
Refer to www.maximintegrated.com/datasheet /index. mvp/
id/6934/t/do for the MAX2686L/MAX2693L EV kit schemat-
ic, Gerber data, PADS layout file, and BOM information.
+Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel
FREQUENCY (MHz) FMIN (dB) |ΓOPT||ΓOPT| ANGLE RN (Ω)
1550 0.88 0.69 32 24.27
1560 0.88 0.69 32 24.22
1570 0.88 0.68 32 24.17
1580 0.88 0.68 32 24.12
1590 0.88 0.68 32 24.07
1600 0.88 0.68 33 24.03
PACKAGE
TYPE
PACKAGE
CODE
OUTLINE
NO.
LAND
PATTERN NO.
4 WLP W40A0+1 21-0480
Refer to
Application
Note 1891
PART TEMP RANGE PIN-PACKAGE
MAX2686LEWS+T -40°C to +85°C 4 WLP
MAX2693LEWS+T -40°C to +85°C 4 WLP
MAX2686L/MAX2693L GPS/GNSS Low-Noise Amplifiers
with Integrated LDO
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Table 4. MAX2693L Simulated Typical Noise Parameters (VCC = 3.3V, TA = +25°C)
Package Information
For the latest package outline information and land patterns
(footprints), go to www.maximintegrated.com/packages. Note
that a “+”, “#”, or “-” in the package code indicates RoHS status
only. Package drawings may show a different suffix character, but
the drawing pertains to the package regardless of RoHS status.
Chip Information
PROCESS: BiCMOS
Ordering Information
REVISION
NUMBER
REVISION
DATE DESCRIPTION PAGES
CHANGED
0 3/12 Initial release —
1 2/15 Updated Typical Operating Circuit, Bump Description, and Detailed Description to
show that the external resistor is now required and not optional 1, 7
Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses
are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits)
shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.
Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc. © 2015 Maxim Integrated Products, Inc.
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MAX2686L/MAX2693L GPS/GNSS Low-Noise Amplifiers
with Integrated LDO
Revision History
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.

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