PT9120 Datasheet, PDF (12/18 Pages) Princeton Technology Corp – GPS Receiver RF Front End IC

GPS Receiver RF Front End IC
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URL: http://www.princeton.com.tw
Preliminary
PT9120
ELECTRICAL CHARACTERISTICS
(Unless otherwise noted, AVDD=TVDD=2.5V, AVSS=TVSS=0V, T_A=25℃)
Parameter
Symbol
Conditions
Min.
DC
AVDD (analog)
AVDD
2.2
TVDD (digital)
TVDD
1.6
PVDD (antenna)
PVDD
2.2
AVDD fully active current
TVDD fully active current
Sleep current (AVDD and TVDD)
I_AVDD
I_TVDD
I_SLEEP
AVDD + TVDD
Antenna Detector and Switch
Low trip voltage
ANT_VL
20
High trip voltage
Maximum switch current
LNA
ANT_VH
I_PDD
PVDD = 2.2V
12
Gain
Noise figure ^(NOTE)
RF Mixer
G_LNA power gain, noise matched 15
NF_LNA power gain, noise matched
Conversion gain
SSB noise figure
IF Strip
G_MIX
voltage gain, no load
16
NF_MIX
8
1st IF filter voltage gain
G_IFFLT
Unloaded
10
AGC amplifier maximum voltage gain G_AGCH
70
AGC amplifier minimum voltage gain G_AGCL
ADC SGN duty cycle
D_SGN
ADC MAG duty cycle
D_MAG
Frequency Synthesizer (Local Oscillator)
VCO frequency range
1.35
VCO gain
SSB phase noise
G_VCO
400
NF_VCO
100KHz offset, 50KHz loop
bandwidth setting
-80
Digital Interface
Input logic HIGH level
Input logic LOW level
V_IH
TVDD=2.5V
2
V_IL
TVDD=2.5V
Output logic HIGH level
V_OH
TVDD=2.5V
2.25
Output logic LOW level
V_OL
TVDD=2.5V
Output rise time
T_RISE
Cload=15pF
Output fall time
T_FALL
Cload=15pF
Note: Depend on PCB layout and matching components.
Typ. Max. Unit
2.5
3.6
V
AVDD + 0.2 V
3.6
V
6.4
7.0
mA
350
500
µA
1
µA
36
mV
300
400
mV
mA
18
20
dB
1.5
2.0
17
18
dB
9
10
dB
15
dB
dB
10
dB
50
%
33
%
1.9
GHz
550
MHz/V
-86
dBc/Hz
2.7
V
0
0.5
V
2.5
V
0
0.25
V
10
ns
10
ns
PT9120 PRE1.0
- 12 -
August, 2007