ADMOS AMS3100-1.2CM, AMS3100-1.2BM, AMS3100-1.2AM Datasheet

Advanced AMS3100-1.2
Monolithic MICROPOWER VOLTAGE REFERENCE
Systems

FEATURES APPLICATIONS

•• ±6 mV (±0.5%) max. initial tolerance (A grade) •• Battery Powered Systems

•• Operating Current 10µµA to 20mA •• Instrumentation

•• Low Voltage Reference 1.240 •• A/D, D/A Converters

•• Max. 0.5ΩΩ Dynamic Impedance (A grade) •• Temperature measurement

•• Low Temperature Coefficient •• Current sources

•• SOT-23 Package Available •• Notebook/Personal Computer

•• Low cost •• Monitors/ VCR/ TV

•• Pagers

GENERAL DESCRIPTION

The AMS3100-1.2 are two-terminal micropower band-gap voltage reference that feature a very low dynamic impedance and
good temperature coefficient, operating over a 10µA to 20mA current range. AMS3100-1.2 is trimmed at wafer test level to
optimize the temperature coefficient and tight output voltage tolerance. The advanced process technology used, makes the
AMS3100-1.2 exceptionally tolerant of capacitive loading, making it easy to use in almost any reference application. The
wide dynamic operating range allows its use with widely varying supplies with excellent regulation. The extremely low power
drain, makes these reference diodes useful for micropower circuitry. These voltage references can be used to make portable
meters, regulators or general purpose analog circuitry with battery life approaching shelf life. Further more, the wide
operating current allows it to replace older references with a tight tolerance part. Pin to pin compatible with other standard
industry references, the AMS3100-1.2 offers the advantage of long term stability at low cost.

The AMS3100-1.2 is operating over a -40°C to 85°C temperature range and is available in the space saving SOT-23
package.

ORDERING INFORMATION:

TOL. PACKAGE TYPE OPERATING

SOT-23

±6mV AMS3100-1.2AM
±12mV AMS3100-1.2BM
±25mV AMS3100-1.2CM

TEMPERATURE RANGE

-40°C to 85°C

-40°C to 85°C

-40°C to 85°C

PIN CONNECTIONS

3L SOT-23

(M)

3 *

21

+ -

Top View

*This pin must be left floating or
connected to pin 2

Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone [phone] Fax [phone]

AMS3100-1.2

ABSOLUTE MAXIMUM RATINGS (Note 1)

Reverse Current 30mA Lead Temperature
Forward Current 10mA Vapor phase (60 sec)
Operating Temperature Range
Storage temperature

-40°C to 85°C

-55°C to +150°C Thermal Resistance (θJA) 410°C/W

ELECTRICAL CHARACTERISTICS

Electrical Characteristics at IR = 100 µA, and TA = +25°C unless otherwise specified.

Infrared (15 sec.)

215°C

220°C

Parameter Conditions

Reverse Breakdown
Voltage (Note 3)

Reverse Dynamic
Impedance (Note 4)
Reverse Breakdown
Voltage Change with
current (Note 3)

Min. Operating
Current (Note 3)

Wide Band Noise
(Note 4)

Temperature Coeff.
(Note 5)

Long Term Stability
(Note 4)

IR - 100 µA

IR - 100 µA, f =20Hz
10µA ≤IR ≤1mA

1mA ≤IR ≤20mA

IR - 100 µA,
10Hz ≤ f ≤ 10kHz

TA=25°C±.1°C
T = 1000 Hr

AMS3100A-1.2

Min Typ Max

1.229 1.235 1.241 1.223 1.235 1.249 1.210 1.235 1.260 V

0.2 0.50 0.5 0.5

1.0
5

5 10

15

60 60 60

25 50 40 100 75

20 20 20 ppm

AMS3100B-1.2

Min Typ Max

1.0
5

5 10

15

AMS3100C-1.2

Min Typ Max

1.0
5

5 10

15

Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is

intended to be functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics. The
guaranteed specifications apply only for the test conditions listed.

Note 2: Parameters identified with boldface type apply at temperature extremes. All other numbers apply at T

= TJ = 25°C.

A

Note 3: Guaranteed and 100% production tested.
Note 4: Guaranteed but not 100% production tested. These limits are not used to calculate average outgoing quality levels.
Note 5: The average temperature coefficient is defined as the maximum deviation of reference voltage at all measured temperatures between the operating T

T

, divided by T

MIN

MAX

- T

. The measured temperatures are 0°C, 25°C, 85°C.

MIN

MAX and

Units

Ω

mV

µA
µA

µV

ppm/°C

TYPICAL APPLICATIONS

Wide Input Micropower Reference Reference from

Range Reference from 9V Battery 1.5V Battery

VIN = 2.3V TO 30V

LM334

AMS3100-1.2

4.3k

OUT

1.24V

9V

500k

1.2V

AMS3100-1.2

Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone [phone] Fax [phone]

1.5V

3k

1.2V

AMS3100-1.2