PT9120_10 Datasheet, PDF (1/12 Pages) Princeton Technology Corp – GPS Receiver RF Front End IC

DESCRIPTION
The PT9120 is a single chip Global Positioning
System (GPS) receiver front-end IC requiring few
external components and offering extremely low
power consumption. The PT9120 employs a
super-heterodyne receiver topology which
down-converts the 1575.42MHz L1-band GPS
signal to a 1st IF. The 1st IF is then filtered by an
off-chip L-C filter and subsequently sub-sampled
by the 2-bit A/D converter to provide both sign and
magnitude quantized CMOS level outputs to base
band inputs.
APPLICATION
• GPS systems
BLOCK DIAGRAM
Preliminary PT9120
GPS Receiver RF Front End IC
FEATURES
• GPS L1-band (C/A code) receiver
• Integrated LNA and antenna detector
• Fully-monolithic VCO
• Support for several reference frequencies
• 2-bit ADC output (sign and magnitude)
• Extremely low current consumption (7mA at
AVDD=DVDD=2.5V)
• Multiple power-down modes
• Available in 28 pins or 24 pins, QFN package
Tel: [phone]‧Fax: [phone]‧ http://www.princeton.com.tw‧2F, 233-1, Baociao Road, Sindian, Taipei 23145, Taiwan