STB5610 Datasheet, PDF (6/11 Pages) STMicroelectronics – GPS RF FRONT-END IC

STB5610
ELECTRICAL CHARACTERISTICS (Vcc = 3+/-10%, Tcase= 25 ^oC)
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
SECOND LIMITING AMPLIFIER
G
Voltage Gain
30
dB
VCO (GPS LO frequency 1555MHz)
VCO
Phase noise
∆f = 1KHz, SSB (10KHz PLL
closed loop bandwith)
-60
dBc/Hz
OUTPUT BUFFER (square wave CMOS level)
V_OH
High output voltage
V_OL
Low output voltage
PHASE LOCKED LOOP
XTAL
Reference crystal
Vcc-0.4
0
Vcc
V
0+0.4
V
16.368
MHz
INPUT CONTROL PINS TABLE (The logic levels are TTL compatible)
GC Pin (lna gain control pin)
Logic level
Value
Low
Max Gain
High
Min Gain
CE2 Pin (Analog portion enable pin)
Logic level
Value
Low
Switch-off
High
Switch-on
CE Pin (Total chip enable pin)
Logic level
Value
Low
Switch-off
High
Switch-on
FSELECT (Frequencies Selector Pin)
Logic level
Value
Low
GPS frequency
High
Galileo frequency
OUTPUT CONTROL PINS TABLE
The Asout pin output provides information on Antenna current consumption
ASout Pin (Antenna sensor pin)^*
Logic level
Value
Low**
Iant<10mA
Iant.>40mA
High**
10mA<Iant<40mA
* It is referred to external sensing resistor of 10 OHm
Application requiring higher or lower current threshold should adjust the resistor value appropiately
** The logic levels are referred to STB5610 Supply Voltage
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