ADMOS AMS05BS, AMS05BN, AMS05AS, AMS05AN, AMS04BS Datasheet

Advanced AMS04/AMS05
Monolithic VOLTAGE REFERENCES
Systems

FEATURES APPLICATIONS

•• Low Temperature Coefficient •• Battery Powered Systems

•• Wide Operating Current Range •• Instrumentation

AMS04…………………….15µµA to 20mA •• A/D, D/A Converters
AMS05…………………….20µµA to 20mA •• Current sources

•• Max. 1ΩΩ Dynamic Impedance •• Power Supplies

•• Typ. 2% Output tolerance •• Telecommunication

GENERAL DESCRIPTION

The AMS04 and the AMS05 are two-terminal, band-gap voltage reference diodes, with an output voltage of 1.25V for the
AMS04 and 2.5V for the AMS05. These devices feature low dynamic impedance and good temperature coefficient, operating
over a wide current range. Since the band-gap reference of these devices uses only transistors and resistors, low noise and
good long term stability result. The wide dynamic operating range allows its use with widely varying supplies with excellent
regulation. The AMS04 and AMS05 can be used for portable meters, regulators, data acquisition converters and
telecommunication.
The AMS04 and AMS05 are operational over a temperature range of 0°C to 70°C and are available in TO-92 and SO-8
packages.

ORDERING INFORMATION:

MAX. PACKAGE TYPE OPERATING

TEMPCO

50ppm/°C

100ppm/°C

50ppm/°C

100ppm/°C

AMS04AN AMS04AS
AMS04BN AMS04BS
AMS05AN AMS05AS
AMS05BN AMS05BS

TO-92 8 LEAD SOIC

TO-92 SO-8

Plastic Package (N) SO Package (S)

+ -

12

TEMPERATURE RANGE

0 to 70°C
0 to 70°C
0 to 70°C
0 to 70°C

N/C N/CN/C

8437 56

1 2

N/C N/C N/C

+

-

Bottom View

Top View

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

ABSOLUTE MAXIMUM RATINGS

Reverse Current 30mA Soldering information
Forward Current 10mA TO-92 package: 10 sec.
Operating Temperature Range
Storage temperature

0°C to 70°C

-55°C to +150°C

SOIC package: Vapor phase (60 sec)
Infrared (15 sec.)

ELECTRICAL CHARACTERISTICS

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

AMS04/AMS05

260°C
215°C
220°C

Parameter Conditions

Reverse Breakdown
Voltage

Reverse Dynamic
Impedance

Reverse Breakdown
Voltage Change

IR = 100 µA

IR = 100 µA
15µA ≤IR ≤20mA

20µA ≤IR ≤1mA
20µA ≤IR ≤20mA

Min Typ Max

1.235 1.250 1.265 2.475 2.50 2.525 V

AMS04

10

0.25

Min Typ Max

1 1

20

1.0

25µA ≤IR ≤1mA

Min. Operating Current 10 20
Wide Band Noise

Temperature Coeff.
AMS04A/AMS05A
AMS04B/AMS05B

10Hz ≤ f ≤ 10kHz

IR = 100 µA (Note 3)

60 60

50

100

AMS05

10

0.25

2.0

1.0

50

100

Units

mV

mV

µA
µV

ppm/°C

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: For elevated temperature operation, T

max is +100°C

J

Thermal Resistance TO-92 SO-8

ϕ

(junction to ambient)

JA

170°C/W (0.125” leads) 165°C/W

Ω

Note 3: 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

Precision Current Source

I

OUT

OUT

81kΩ

*

I * =

MAX

1.25V

SET

R

- T

. The measured temperatures are 0°C, 25°C and 70°C.

MIN

Battery Powered 1.25V Reference 10V Reference

AMS04

+15V

1µF

2

­7

LM312

3

+

6

4

R

SET

9V

360kΩ

AMS04

1.2V

AMS05

50k

3

2

60kΩ

+15V

7

+

6

4

-

180kΩ

0.1µF

V

MAX and

OUT

= 10VLM312

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