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AMS303 Schematic ( PDF Datasheet ) - AMS

Teilenummer AMS303
Beschreibung MICROPOWER COMPARATOR
Hersteller AMS
Logo AMS Logo 




Gesamt 7 Seiten
AMS303 Datasheet, Funktion
Advanced
Monolithic
Systems
AMS303
MICROPOWER COMPARATOR, OPEN COLLECTOR OUTPUT
RoHS compliant
FEATURES
Guaranteed 2.7V to 15V supplies
Open Collector Output
Industrial temperature range: -40ºC to +85ºC
Low Offset Voltage <5mV
Low Supply Current: 7µA
APPLICATIONS
Mobile battery operated products
Notebooks and PDA’s
Alarmed Circuits
LED driver
Communication Circuits
GENERAL DESCRIPTION
The AMS303 has rail-to-rail output swing and input common-mode voltage. It exhibit excellent speed-power ratio, achieving
a Propagation Delay of 400ns with low supply current.
The AMS303 is available in space saving 5-Pin SOT23. The small package saves space on pc boards, and enables the design of
small portable electronic devices. It also allows the designer to place the device closer to the signal source to reduce noise
pickup and increase signal integrity.
ORDERING INFORMATION:
MAX.
OFFSET
5mV
15mV
PACKAGE TYPE
5 LEAD SOT-23
AMS303AM1
AMS303M1
OPERATING
TEMP. RANGE
-40 to +85°C
-40 to +85°C
TYPICAL APPLICATION
VCC
PIN CONNECTIONS
5L SOT-23
(M1)
VCC 1
GND 2
VO 3
5 -IN
4 +IN
Top View
RIN
VIN
Vref
R1
-
+
R pull-up
Vo
RF
Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723






AMS303 Datasheet, Funktion
APPLICATION INFORMATION
AMS303 is an open collector with a very low supply
current of typical 7uA. The advantage of this product is
the small space package and simplicity of application. It
operates from as low as +2.7V to +15Vand the output
pull-up resistor could be biased from higher or lower
voltage then Vcc. When a large input signal is applied,
an input resistor should be used to limit the input current
in case of excessive input voltage. If the input voltage is
pulled above the supply voltage Vcc, a set of clamp
diode should be used to protect the input circuit. Since
AMS303 is a high impedance input, PCB layout
precautions should be taken to avoid noise pick-up from
adjacent circuits or electrically noisy environments. A
good practice is to keep the input traces very short and
input components very close to the package. If long
conductors are necessary, shielded or twisted pairs
should be used.
AMS303
RIN
VIN
R1
R2
-
+
RF
VCC
R pull-up
Vo
Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723

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