STB5610

6/11

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

SECOND LIMITING AMPLIFIER

G

Voltage Gain

30

dB

VCO

(GPS LO frequency 1555MHz)

VCO

Phase noise

closed loop bandwith)

-60

dBc/Hz

OUTPUT BUFFER

(square wave CMOS level)

High output voltage

Vcc-0.4

Vcc

V

Low output voltage

0

0+0.4

V

GC Pin (lna gain control pin)

Logic level

Value

Low

Max Gain

High

Min Gain

CE Pin (Total chip enable pin)

Logic level

Value

Low

Switch-off

High

Switch-on

CE2 Pin (Analog portion enable pin)

Logic level

Value

Low

Switch-off

High

Switch-on

Logic level

Value

Low**

Iant<10mA

Iant.>40mA

High**

10mA<Iant<40mA

The Asout pin output provides information on Antenna current consumption

INPUT CONTROL PINS TABLE (The logic levels are TTL compatible)

* It is referred to external sensing resistor of 10 OHm

** The logic levels are referred to STB5610 Supply Voltage

FSELECT (Frequencies Selector Pin)

Logic level

Value

Low

GPS frequency

High

Galileo frequency

OUTPUT CONTROL PINS TABLE

Application requiring higher or lower current threshold should adjust the resistor value appropiately

PHASE LOCKED LOOP

XTAL

Reference crystal

16.368

MHz