MAX2741 查看數據表（PDF） - Maxim Integrated
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MAX2741 Datasheet PDF : 13 Pages
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MAX2741
Integrated L1-Band GPS Receiver
AC Electrical Characteristics (continued)
(Operating conditions (unless otherwise specified): VCC = 2.7V to 3.0V for TA = -40°C to +85°C; REFCLK driven at 10MHz sinusoid,
1.2VP-P; registers set according to mode; using the Typical Application Circuit; CW RF signal at 1575.42MHz. Typical values are mea-
sured at VCC = 2.75V, TA = +25°C.)
PARAMETER
CONDITIONS
2nd CONVERSION STAGE (1st IF TO ADC INPUT)
1st IF Frequency
At IFOUT
Conversion Gain
Max gain (CONFIG1:D4–D0 = 11111) (Note 1)
Min gain (CONFIG1:D4–D0 = 00000) (Note 1)
Input IP3
1st conversion (Note 5)
Noise Figure
Max gain (CONFIG1:D4–D0 = 11111)
IF Output Port Admittance
Real
Imaginary
IF Input Port Admittance
Real
Imaginary
LPF -3dB Corner Frequency
(SYNTH:D13–D10 = 1111)
(SYNTH:D13–D10 = 0000)
SYNTHESIZER
ICP_OH
PLL charge-pump source current
ICP_OL
Closed-Loop Phase Noise
PLL charge-pump sink current
At 1kHz offset
Comparison Spurs
At ±200kHz offset
Reference Oscillator Frequency Sinusoid (Note 1)
REF Input Voltage Level
Sinusoid (Note 1)
VCO Coarse Tune Range
Programmable (CONFIG1:D7 to D5 = 000 to 111)
(Note 1)
DIGITAL I/O
SPI Clock Frequency
MIN TYP MAX UNITS
37.38
48
61
74
10
-36
12
0.40
1.5
0.40
0.15
2.9
7.7
MHz
dB
dB
dBm
dB
mS
pF
mS
pF
MHz
75
µA
-100
µA
-55
dBc/Hz
-44
dBc/Hz
2
10
26
MHz
0.6
2.2
VP-P
240
MHz
1
MHz
Note 1: Production tested for +25°C and +85°C, guaranteed by design and characterization for -40°C.
Note 2: Test tones at 1575.8MHz and 1576.8MHz at -60dBm/tone.
Note 3: Guaranteed by design and characterization.
Note 4: Image frequency is 1575.42MHz + 2(fIF) = 1650.18MHz
Note 5: Test tones at 37.38MHz and 36.88MHz at -50dBm/tone.
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