atr0603 ATMEL Corporation, atr0603 Datasheet

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atr0603

Manufacturer Part Number
atr0603
Description
Gps Front-end Ic
Manufacturer
ATMEL Corporation
Datasheet
Features
1. Description
The ATR0603 is a single-IF GPS front-end IC, designed to meet the requirements of
mobile and automotive applications. Excellent RF performance combined with high
bandwidth and a low noise figure enables high-quality GPS solutions, and its very low
power consumption is a perfect match for portable devices. Featuring a fully inte-
grated balanced frequency synthesizer, only a few external components are required.
The gain of the IF amplifier can be set to three different levels in order to meet the
requirements for various applications. Several types of external oscillators can be con-
nected to the robust TCXO interface. The startup logic allows significant power saving
due to very low power-down current and the ability to disable the external TCXO or
even other external components. CMOS output drivers deliver a 1-bit data signal and
a 16.367667-MHz clock signal to the baseband interface.
Figure 1-1.
Very Low Power Design
Single IF Architecture
Excellent Noise Performance
1-bit ADC on Chip
Small QFN Package (4 mm
Highly Integrated, Few External Components
Advanced BiCMOS Technology (UHF6s)
Supply Switch for External Circuitry (e.g., TCXO)
Non-ESD-sensitive Device
GND
RF
NRF
XSUP
XIN
XREF
PU
Startup
logic
Block Diagram
BP
NBP
VCO
PLL
4 mm, 24 Pins)
BPI
ATR0603
NBPI
AMP1
AMP2
A
D
VDIG
VCC
SIG
SC
GPS Front-end
IC
ATR0603
Preliminary
4950B–GPS–11/06

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