Operating Temperature Range ........................... -40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range ............................ -65°C to +150°C
Lead Temperature (soldering, 10s) ................................. +300°C
Soldering Temperature (reflow) ....................................... +260°C
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
(MAX2769C EV kit, V
CC_
= 2.7V to 3.3V, T
A
= -40°C to +85°C, PGM = Ground. Registers are set to the default power-up states. Typical
values are at V
CC_
= 2.85V and T
A
= +25°C, unless otherwise noted.) (Note 1)
PARAMETER
Supply Voltage
Default mode, LNA1 is active (Note 2)
Supply Current
Default mode, LNA2 is active (Note 2)
Idle ModeK,
IDLE
= low,
SHDN
= high
Shutdown mode,
SHDN
= low
Voltage Drop at ANTBIAS from
V
CC_RF
Short-Circuit Protection Current
at ANTBIAS
Active Antenna Detection Current
DIGITAL INPUT AND OUTPUT
Digital Input Logic-High
Digital Input Logic-Low
Measure at the
SHDN
pin
Measure at the
SHDN
pin
1.5
0.4
V
V
Sourcing 20mA at ANTBIAS
ANTBIAS is shorted to ground
To assert logic-high at ANTFLAG
CONDITIONS
MIN
2.7
18
15
TYP
2.85
27
25
5
200
0.2
57
1.1
µA
V
mA
mA
MAX
3.3
31
30.5
mA
UNITS
V
Idle Mode is a trademark of Maxim Integrated Products, Inc.
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Maxim Integrated
│
2
MAX2769C
Universal GNSS Receiver
AC Electrical Characteristics
(MAX2769C EV kit, V
CC_
= 2.7V to 3.3V, T
A
= -40°C to +85°C, PGM = Ground. Registers are set to the default power-up states. LNA
input is driven from a 50Ω source. All RF measurements are done in the analog output mode with ADC bypassed. PGA gain is set to
51dB gain by serial-interface word GAININ = 111010. Maximum IF output load is not to exceed 10kΩ||7.5pF on each pin. Typical values
are at V
CC_
= 2.85V and T
A
= +25°C, unless otherwise noted.) (Note 1)
PARAMETER
CASCADED RF PERFORMANCE
RF Frequency
Noise Figure
Out-of-Band 3rd-Order Input
Intercept Point
L1 band
LNA1 input active, default mode (Note 3)
LNA2 input active, default mode (Note 3)
Measured at the mixer input
Measured at the mixer input (Note 4)
1575.42
1.4
2.7
10.3
-7
-85
10
25
LO leakage
Reference harmonics leakage
Measured from the mixer to the baseband analog output
91
55
FCEN = 001101, FBW = 00
Passband Center Frequency
FCEN = 001101, FBW = 10
FCEN = 111101, FBW = 01
FBW = 00
Passband 3dB Bandwidth
Lowpass 3dB Bandwidth
FBW = 10
FBW = 01
FBW = 11
3rd-order filter, bandwidth = 2.5MHz,
measured at 4MHz offset
5th-order filter, bandwidth = 2.5MHz,
measured at 4MHz offset
40
-101
-103
96
59
3.9
7.1
10.7
2.5
4.2
9.66
9
30
dB
49.5
MHz
MHz
MHz
103
dBm
dBm
dB
dB
dBm
dB
dB
dB
MHz
CONDITIONS
MIN
TYP
MAX
UNITS
In-Band Mixer Input Referred 1dB
Measured at the mixer input
Compression Point
Mixer Input Return Loss
Image Rejection
Spurs at LNA1 Input
Maximum Voltage Gain
Variable Gain Range
FILTER RESPONSE
Stopband Attenuation
LNA
LNA1 INPUT
Power Gain
Noise Figure
Input IP3
Output Return Loss
Intput Return Loss
(Note 5)
19
0.83
-1.1
10
8
dB
dB
dBm
dB
dB
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Maxim Integrated
│
3
MAX2769C
Universal GNSS Receiver
AC
Electrical Characteristics (continued)
(MAX2769C EV kit, V
CC_
= 2.7V to 3.3V, T
A
= -40°C to +85°C, PGM = Ground. Registers are set to the default power-up states. LNA
input is driven from a 50Ω source. All RF measurements are done in the analog output mode with ADC bypassed. PGA gain is set to
51dB gain by serial-interface word GAININ = 111010. Maximum IF output load is not to exceed 10kΩ||7.5pF on each pin. Typical values
are at V
CC_
= 2.85V and T
A
= +25°C, unless otherwise noted.) (Note 1)
PARAMETER
LNA2 INPUT
Power Gain
Noise Figure
Input IP3
Output Return Loss
Input Return Loss
FREQUENCY SYNTHESIZER
LO Frequency Range
LO Tuning Gain
Reference Input Frequency
Main Divider Ratio
Reference Divider Ratio
Charge-Pump Current
ICP = 0
ICP = 1
8
With respect to ground, I
OH
= 10µA (DC-coupled)
With respect to ground, I
OL
= 10µA (DC-coupled)
Load = 10kΩ + 40pF, f
CLKOUT
= 32MHz
Sine wave
/4, /2, /1
(x2, max input frequency of 16MHz)
AGC enabled, 3-bit output
AGC enabled, 3-bit output
0.5
÷4
x2
11
10||40
2
0.8
8
36
1
0.5
1
32
0.2V < V
TUNE
< (V
CC_
- 0.3V)
1550
57
32
32,767
1023
1610
MHz
MHz/V
MHz
—
—
mA
(Note 5)
13
1.14
1
19
11
dB
dB
dBm
dB
dB
CONDITIONS
MIN
TYP
MAX
UNITS
TCXO INPUT BUFFER/OUTPUT CLOCK BUFFER
Frequency Range
Output Logic-Level High (V
OH
)
Output Logic-Level Low (V
OL
)
Capacitive Slew Current
Output Load
Reference Input Level
Clock Output Multiply/Divide
Range
ADC
ADC Differential Nonlinearity
ADC Integral Nonlinearity
±0.1
±0.1
LSB
LSB
MHz
V
V
mA
kΩ||pF
V
P-P
—
Note 1:
MAX2769C is production tested at T
A
= +25°C and +85°C. All min/max specifications are guaranteed by design and charac-
terization from -40°C to +85°C, unless otherwise noted. Default register settings are not production tested or guaranteed. User
must program the registers upon power-up.
Note 2:
Default, low-NF mode of the IC. LNA choice is gated by the ANT_FLAG signal. In the normal mode of operation without an
active antenna, LNA1 is active. If an active antenna is connected and ANT_FLAG switches to 1, LNA1 is automatically dis-
abled and LNA2 becomes active. PLL is in an integer-N mode with f
COMP
= f
TCXO
/16 = 1.023MHz and ICP = 0.5mA. The IF
filter is configured as a 5th-order Butterworth filter with a center frequency of 4MHz and bandwidth of 2.5MHz. Output data is
in a 2-bit sign/magnitude format at CMOS logic levels in the I channel only.
Note 3:
The LNA output connects to the mixer input without a SAW filter between them.
Note 4:
Two tones are located at 12MHz and 24MHz offset frequencies from the GPS center frequency of 1575.42MHz at -60dBm/
tone. Passive pole at the mixer output is programmed to be 13MHz.
Note 5:
Measured from the LNA input to the LNA output. Two tones are located at 12MHz and 24MHz offset frequencies from the GPS
center frequency of 1575.42MHz at -60dBm per tone.
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Maxim Integrated
│
4
MAX2769C
Universal GNSS Receiver
(MAX2769C EV kit, V
CC_
= 2.7V to 3.3V, T
A
= -40°C to +85°C, PGM = Ground. Registers are set to the default power-up states. LNA
input is driven from a 50Ω source. All RF measurements are done in the analog output mode with ADC bypassed. PGA gain is set to
51dB gain by serial-interface word GAININ = 111010. Maximum IF output load is not to exceed 10kΩ||7.5pF on each pin. Typical values
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