DA9271.005

13 July 2006

1 (5)

MAS9271

IC FOR 10.00 – 40.00 MHz PXO

•

Low Power

•

Wide Supply Voltage Range

•

CMOS (Square Wave) Output

•

Very High Level of Integration

•

Electrically Trimmable

•

Very Low Phase Noise

•

Low Cost

DESCRIPTION

The MAS9271 is an integrated circuit well suited to

make initial offset trimming of the crystal in

oscillator. The trimming is done by a serial bus and

the calibration information is stored in an internal

PROM.

To build a Precision Crystal Oscillator (PXO) only

one additional component, a crystal is needed.

FEATURES

APPLICATIONS

•

Very small size

•

Minimum current draw

•

Wide operating temperature range

•

Phase noise <-130 dBc/Hz at 1 kHz offset

•

Square wave output

•

PXO for data terminals

•

PXO for telecommunication applications

•

PXO for computer application

BLOCK DIAGRAM

DA

CLK

PV

VSS

VDD

X2

OUT

X1

X'Tal

Digital

MAS9271

3

PD

5