uaa1570hl NXP Semiconductors, uaa1570hl Datasheet - Page 9

• Manufacturer Part Number: uaa1570hl
• Description: Global Positioning System Gps Front-end Receiver Circuit
• Manufacturer: NXP Semiconductors

Philips Semiconductors
1999 May 10
COMP
P41GND
P42GND
V
LNA1GND1
LNA1IN
BIASGND1
LNA1GND2
LNA1OUT
CCA(LNA1)
Global Positioning System (GPS) front-end
receiver circuit
SYMBOL
PIN
40
41
42
43
44
45
46
47
48
depends on
VCO
application
0
0
2.7
0
0.815
0
0
1.48
V
CC
TYPICAL VALUES (V)
= 2.7 V
PIN VOLTAGE
depends on
VCO
application
0
0
5
0
0.807
0
0
3.629
V
CC
= 5 V
Charge pump phase frequency detector output: the PLL loop
filter is connected in shunt and close proximity to this pin. The
PLL loop filter tuning control voltage should be routed to the
external VCO varactor circuit using minimal trace lengths in
complete isolation from all potential coupling sources.
this pin provides additional RF/IF shielding and has to be
connected to ground
this pin provides additional RF/IF shielding and has to be
connected to ground
LNA1 power supply: DC operation range 2.7 to 5 V; use close
proximity RF decoupling to pins 44, 46 and 47.
LNA1 ground 1: minimize RF ground inductance
LNA1 input: use external RF AC coupling
LNA1 bias circuit ground: minimize RF ground inductance
LNA1 ground 2: minimize RF ground inductance
LNA1 output: use external RF AC coupling. The DC voltage is
approximately 1.3 V below the V
9
DESCRIPTION
CCA(LNA1)
supply on pin 43.
UAA1570HL
Product specification