Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (TQFN only, 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
(MAX2769 EV kit, V
CC
= 2.7V to 3.3V, T
A
= -40°C to +85°C, PGM = GND. 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 Mode™,
IDLE
= low
Shutdown mode,
SHDN
= low
Voltage Drop at ANTBIAS from
VCCRF
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
15
12
TYP
2.85
18
15
1.5
20
0.2
57
1.1
μA
V
mA
mA
MAX
3.3
22
19
mA
UNITS
V
Idle Mode is a trademark of Maxim Integrated Products, Inc.
2
Maxim Integrated
MAX2769
Universal GPS Receiver
AC ELECTRICAL CHARACTERISTICS
(MAX2769 EV kit, V
CC
= 2.7V to 3.3V, T
A
= -40°C to +85°C, PGM = GND. 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
In-Band Mixer Input Referred
1dB Compression Point
Mixer Input Return Loss
Image Rejection
Spurs at LNA1 Input
Maximum Voltage Gain
Variable Gain Range
FILTER RESPONSE
Passband Center Frequency
FBW = 00
Passband 3dB Bandwidth
Lowpass 3dB Bandwidth
Stopband Attenuation
LNA
LNA1 INPUT
Power Gain
Noise Figure
Input IP3
Output Return Loss
Intput Return Loss
LNA2 INPUT
Power Gain
Noise Figure
Input IP3
Output Return Loss
Input Return Loss
(Note 5)
13
1.14
1
19
11
dB
dB
dBm
dB
dB
(Note 5)
19
0.83
-1.1
10
8
dB
dB
dBm
dB
dB
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
41
4
2.5
4.2
8
9
30
49.5
MHz
dB
MHz
MHz
LO leakage
Reference harmonics leakage
Measured from the mixer to the baseband analog output
91
55
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)
Measured at the mixer input
1575.42
1.4
2.7
10.3
-7
-85
10
25
-101
-103
96
59
103
dBm
dBm
dB
dB
dBm
dB
dB
dB
MHz
CONDITIONS
MIN
TYP
MAX
UNITS
Maxim Integrated
3
MAX2769
Universal GPS Receiver
AC ELECTRICAL CHARACTERISTICS (continued)
(MAX2769 EV kit, V
CC
= 2.7V to 3.3V, T
A
= -40°C to +85°C, PGM = GND. 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
FREQUENCY SYNTHESIZER
LO Frequency Range
LO Tuning Gain
Reference Input Frequency
Main Divider Ratio
Reference Divider Ratio
Charge-Pump Current
ICP = 0
ICP = 1
Sine wave
0.4
÷4
x2
8
36
1
0.5
1
0.4V < V
TUNE
< 2.4V
1550
57
44
32,767
1023
1610
MHz
MHz/V
MHz
—
—
mA
CONDITIONS
MIN
TYP
MAX
UNITS
TCXO INPUT BUFFER/OUTPUT CLOCK BUFFER
Reference Input Level
Clock Output Multiply/Divide
Range
ADC
ADC Differential Nonlinearity
ADC Integral Nonlinearity
AGC enabled, 3-bit output
AGC enabled, 3-bit output
±0.1
±0.1
LSB
LSB
V
P-P
—
Note 1:
MAX2769 is production tested at T
A
= +25°C. All min/max specifications are guaranteed by design and characterization
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
disabled and LNA2 becomes active. PLL is in an integer-N mode with f
COMP
= f
TCXO
/ 16 = 1.023MHz and I
CP
= 0.5mA. The
complex 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.
4
Maxim Integrated
MAX2769
Universal GPS Receiver
Typical Operating Characteristics
(MAX2769 EV kit, V
CC
= 2.7V to 3.3V, T
A
= -40°C to +85°C, PGM = GND. 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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