
DATE AND TRACKING INFORMATION
6
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
receiver
LNA/mixer cascaded performance
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Frequency
1575.42
MHz
SSB noise figure
Room temperature
2.9
3.5
dB
Conversion gain
28
32
36
dB
LNA/mixer input 1-dB compression point
LNA/mixer input 3rd-order intercept point
–36
dBm
–26
dBm
IF output frequency range
Fixed IF frequency at 222.54 MHz
222.54
MHz
Input return loss
Single ended with external matching
network to 50
10
dB
IF output impedance
Differential-open collector
200
dB
IF output return loss
External match to single-ended output
10
Image rejection
Image at 1130.34 MHz
20
25
dB
All other harmonics at IF output
Measured at IF port
–50
dBm
LO leakage at RF port
Measured at RF input port with a Hi-Z probe
–40
dBm
Maximum RF level
Maximum RF level before destruction
TBD
dBm
frequency synthesizer
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Frequency
1352.88
MHz
Reference frequency
10
16.8
40
MHz
Comparison frequency
20
40
240
kHz
Main frequency divider, N
15 bits
32768
Reference frequency divider, M
12 bits
4096
Reference sensitivity
0.2
2
Vpp
Charge pump current
1
mA
Current matching
Typical lock time
PLL spur suppression
RMS phase error
10%
5
μ
s
dBc
50
Compare frequency = 40 kHz
10
degrees
Loop bandwidth = 4 kHz
Compare frequency = 40 kHz
Frequency offset = 1 kHz
68
Phase noise
Loop bandwidth = 4 kHz
Compare frequency = 40 kHz
Frequency offset = 10 kHz
70
dBc/Hz
Loop bandwidth = 4 kHz
Compare frequency = 40 kHz
Frequency offset = 100 kHz
98
Minimum performance requirements for reliable GPS operation. GPS performance level established by PLL loop filter and VCO tank components
selected by the designer.
P