Advanced Monolithic Systems, Inc.

www.advanced-monolithic.com

Phone (925) 443-0722

Fax (925) 443-0723

AMS222

TYPICAL CHARACTERISTICS (continued)

1.0

0.5

0

-0.5

-1.0

-40

-15

-10

50

100

125

TEMPERATURE (ºC)

12.5KW

FREQUENCY ERROR

vs. TEMPERATURE (FROM +25ºC)

1

10

100

1000

1

2

3

4

5

6

TYPICAL APPLICATION CIRCUIT

AMS222 used as Clock Signal to Synchronize two Switching Regulators

PRODUCT DESCRIPTION

AMS222 is a silicon clock generator with complementary output, programmable frequency using a single resistor from 10KHz to

6MHz.

The Output B is 180º phase from Output A, and the signals do not overlap does allow to drive critical circuits where break-before-

make is very important. It operates from as low as 2.7V to high 15V consuming just 1.2mA of power. The output drive is capable

to drive capacitive loads up to 50pF and resistive loads up to 3mA. The high stability of the output frequency and it’s immunity to

supply variation is due to internal temperature compensated voltage reference. Having a good power supply rejection ratio, the

device works very well in electrically noisy environments. The only critical element is the Fset resistor that should be placed as

close as possible to the package to avoid parasitic capacitance and PCB traces cross-talk.