Advanced Monolithic Systems AMS3100 Service Manual

http://www.BDTIC.com/AMS

Advanced AMS3100

Monolithic ADJUSTABLE MICROPOWER VOLTAGE REFERENCE DIODE
Systems

RoHS compliant

FEATURES APPLICATIONS

• Adjustable from 1.24V to 5.30V • Battery Powered Systems

• Operating Current 10µA to 20mA • Instrumentation

• 1% and 2% Initial Tolerance • A/D, D/A Converters

• 1Ω Dynamic Impedance • Temperature measurement

• Low Temperature Coefficient • Current sources

• 1.2V Device and 2.5V Device also available • Notebook/Personal Computer

GENERAL DESCRIPTION

The AMS3100 are two-terminal micropower band-gap voltage reference that feature a very low dynamic impedance and good
temperature coefficient, operating from 1.24V to 5.3V and over a 10µA to 20mA current range. AMS3100 is trimmed at wafer
test level to optimize the temperature coefficient and tight output voltage tolerance. The advanced process technology used,
makes the AMS3100 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 offers the advantage of long term stability at low cost.

The AMS3100 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

±12mV AMS3100AM
±25mV AMS3100BM
±25mV AMS3100CM

PIN CONNECTIONS

TEMPERATURE RANGE

-40°C to 85°C

-40°C to 85°C

-40°C to 85°C

3L SOT-23

(M)

• Monitors/ VCR/ TV

• Pagers

Advanced Monolithic Systems, Inc.

3 -

21

A+

Top View

A = Adjust pin.

http://www.BDTIC.com/AMS

AMS3100

ABSOLUTE MAXIMUM RATINGS

Reverse Current 30mA Lead Temperature (25 sec)
Forward Current 10mA
Operating Temperature Range
Storage temperature

-40°C to 85°C

-55°C to +150°C

Thermal Resistance (θ

) 410°C/W

JA

215°C

ELECTRICAL CHARACTERISTICS

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

Parameter

Conditions

AMS3100A

Min Typ Max

AMS3100B

Min Typ Max

AMS3100C

Min Typ Max

Units

Reference Voltage
Dynamic Output

Impedance

Reference Voltage
Change with
Current

Min. Operating
Current (Note 3)

Wide Band Noise
(Note 4)

Temperature Coeff.

=100 µA

I

R

I

=0.1IR, f = 20Hz

AC

V

= V

REF

= 5.3V

≤1mA

R

≤20mA

R

= V

REF

= 5.3V

OUT

V

OUT

10µA ≤I
1mA ≤I

V

OUT

V

OUT

10Hz ≤ f ≤ 10kHz

= V

V

OUT

V

OUT

REF

= 5.3V

1.238 1.250 1.262 1.225 1.250 1.275 1.225 1.250 1.275 V

0.3

0.7

0.2
4

6

30

50

170

25

1.0
10

9

45

0.3

0.7

0.2
4

6

30

50

170

50

0.3

0.7

1.0

0.2 4 1.0

10

9

45

6

30

50

170
100 150

10

9

45

(Note 5)
Long Term Stability

(Note 4)

=25°C±.1°C

T

A

T = 1000 Hr

20 20 20 ppm

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

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

. The guaranteed specifications apply only for the test conditions listed.

= 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

MAX and TMIN

, divided by T

MAX

- T

. The measured temperatures are -40°C, 25°C and 85°C.

MIN

TYPICAL APPLICATIONS

1.2V Reference 5.0V Reference Precision 10V Reference

9V

+

AMS3100

-

R1
500k

1.2V

FB

AMS3100

9V

OUT

R1
50k

+

FB

-

R2
120k

R3
364k

⎞

⎛

R3

⎟

⎜

1.24 V

+= 1

⎟

⎜

R2

⎠

⎝

5V

15V

R1
5k

+

AMS3100

-

R2
301k
1%

FB

R3

68.1k
1%

V
10V

OUT

Ω

mV
mV

µA
µA

µV

rms

µV

rms

ppm/°C

Advanced Monolithic Systems, Inc.