AMS4040AM - Advanced Monolithic Systems

Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723

Advanced AMS4040

Monolithic MICROPOWER SHUNT VOLTAGE REFERENCE

Systems

FEATURES APPLICATIONS

•• Tight Output Voltage Tolerance •• Battery Powered Systems

•• Low Output Noise •• Instrumentation

•• Operating Current 250µµA to 100mA •• Energy Management

•• Low Dynamic Impedance •• Automotive

•• Low Temperature Coefficient •• Precision Audio Components

•• Available in the sub-miniature SOT-23 Package •• Product Testing

•• 1.2V Device ( AMS4041) also available •• Data Acquisition Systems

GENERAL DESCRIPTION

The AMS4040 is a two-terminal micropower band-gap voltage reference diode featuring a very low dynamic impedance and

good temperature coefficient, operating over a 250µA to 100mA current range. On-chip trimming is used to provide tight

voltage tolerance. Since the AMS4040 band-gap reference 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

extremely low power drain of the AMS4040 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.

The AMS4040 is operational in the full industrial temperature range of -40°C to +85°and is available in small space saving

TO-92, SO-8, SOT-89 and SOT-23 packages.

ORDERING INFORMATION:

TOL. PACKAGE TYPE OPERATING

TO-92 8 LEAD SOIC SOT-89 3 LEAD SOT-23 TEMP. RANGE

±0.25% AMS4040AN AMS4040AS AMS4040AL AMS4040AM -40 to +85° C

±0.5% AMS4040BN AMS4040BS AMS4040BL AMS4040BM -40 to +85° C

±1.0% AMS4040CN AMS4040CS AMS4040CL AMS4040CM -40 to +85° C

PIN CONNECTIONS

TO-92 8L SOIC SOT-89 3L SOT-23

Plastic Package (N) SO Package (S) (L) (M)

123 -+N/C

N/C

+

-

1

2

8

4

3

7

5

6

123 +-

3 *

21

*This pin must be left floating

or connected to pin 2

Bottom View Top View Top View Top View

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AMS4040

ABSOLUTE MAXIMUM RATINGS (Note 1)

Reverse Current 100mA

Internal Power Dissipation (PD)

Forward Current 10mA

TO-92 Package 0.78W

Storage temperature -65°C to +150°C

SO-8 Package 0.71W

Lead Temperature

SOT-89 Package 0.91W

TO-92 package (Soldering 10 sec.) 265°C

SOT-23 Package 0.28W

SO-8 and SOT-23 packages:

Thermal Resistance (θJA)

Vapor phase (60 sec) 215°C

TO-92 Package 160°C/W

Infrared (15 sec.) 220°C

SO-8 Package 175°C/W

SOT-89 package (Soldering 10 sec.) 265°C

SOT-89 Package 110°C/W

SOT-23 Package 410°C/W

Note1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. For guaranteed specifications and test conditions, see the

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

ELECTRICAL CHARACTERISTICS

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

Parameter

Conditions AMS4040A

Min Typ Max AMS4040B

Min Typ Max AMS4040C

Min Typ Max

Units

Reverse Breakdown

Voltage 2.494 2.500 2.506 2.488 2.500 2.512 2.475 2.500 2.525 V

Deviation of Reverse

Breakdown Voltage over

Temperature TA = Full Range

8.0 17 8.0 17 8.0 25 mV

Reverse Breakdown

Voltage Change with IRMIN ≤ IR ≤ 1mA 0.3 0.8

1.0

0.3 0.8

1.0

0.3 0.8

1.0

mV

Operating Current

Change 1mA ≤ IR ≤ 15mA 2.5 6.0

8.0

2.5 6.0

8.0

2.5 6.0

8.0

mV

Reverse Breakdown

Voltage Long Term

Stability

TA=25°C±.1°C

T = 1000 Hr 120 120 120 ppm

Wide Band Noise 10HZ ≤ f ≤ 10kHz

35 35 35 µVrms

Reverse Dynamic

Impedance IR = 1mA, f = 120Hz,

IAC = 0.1IR

0.25 0.5 0.25 0.5 0.25 0.5 Ω

Minimum Operating

Current

80 2500 80 250 80 250 µA

Parameters identified with boldface type apply at temperature extremes. All other numbers apply at TA = TJ = 25°C.

TYPICAL APPLICATIONS

Shunt Regulator

AMS4040-2.5 IQ

IQ + IL

IL

RS

VR

VS

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AMS4040

TYPICAL APPLICATIONS

Precision 1µµA to 1mA Current Sources

8

4

3

2

+

-

1/2

LMC6062 1

AMS4040-2.5

R2

R1

20k

-15V

-1.0V TO -12V

IOUT*

IOUT=2.5V/R2

8

43

2

+

-

1/2

LMC6062 1

R2

R1

20k

12V

1.0V TO 12V

IOUT*

AMS4040-2.5

Precision ±± 2.500V Reference

AMS4040-2.5

904Ω, 1%

+5V ±5%

+

-

1/2

LMC6062

47kΩ, 0.1%

0.1µF+5V

+2.500V

-2.500V

47kΩ, 0.1%

0.1µF

-5V

START-UP CHARACTERISTICS

AMS4040-2.5 VR

RS

VIN

1Hz rate

Test Circuit

VR (V) VIN (V)

5

0

3

2

1

0

0 20 40 60 80

RS = 30 kAMS4040-2.5

TJ = 25°C

RESPONSE TIME (

µ

s)

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AMS4040

TYPICAL PERFORMANCE CHARACTERISTICS

-40 -20 0 20 40 60 80

-0.5

+0.5

0

100

-0.1

-0.2

-0.3

-0.4

+0.4

+0.3

+0.2

+0.1

Temperature Drift for Different

Average Temperature Coefficient

TEMPERATURE ( ° C)

V

R

CHANGE (%)

I

R

= 150

µ

A

0.1

1

10

100

1k

100 1k 10k 100k

Ouput Impedance vs Frequency

FREQUENCY (Hz)

NOISE (mV/

√

Hz)

1M 0.1

1

10

100

1k

100 1k 10k 100k

FREQUENCY (Hz) 1M

1 10 100 1k 10k

0.1

5.0

1.0

Noise Voltage vs Frequency

100k

FREQUENCY (Hz)

IMPEDANCE (

Ω

)

0.2

10

2.0

T

J

=25° C,

∆

I

R

= 0.1I

R

I

R

= I

RMIN

+100

µ

A

IMPEDANCE (

Ω

)

I

R

= 200

µ

A

T

J

=25° C

0.5

Ouput Impedance vs Frequency

+12ppm/° C

-51ppm/° C

-22ppm/° C

I

R

= 100 mA

T

J

=25° C,

∆

I

R

= 0.1I

R

C

L

= 0

C

L

= 1

µ

F

TANTALUM

C

L

= 1

µ

F

TANTALUM

C

L

= 0

XC

L

XC

L

00.5 1.0 2.0 2.5

0

80

40

Reverse Characteristics and

Minimum Operating Current

REVERSE VOLTAGE (V)

REVERSE CURRENT (

µ

A)

20

120

100

T

J

=25° C

60

1.5

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AMS4040

PACKAGE DIMENSIONS inches (millimeters) unless otherwise noted.

3 LEAD TO-92 PLASTIC PACKAGE (N)

8 LEAD SOIC PLASTIC PACKAGE (S)

0.140±0.010

(3.556±0.127)

0.060±0.010

(1.524±0.254)

0.015±0.002

(0.381±0.051)

0.016±0.003

(0.406±0.076)

0.050±0.005

(1.270±0.127)

0.060±0.005

(1.524±0.127)

DIA

0.180±0.005

(4.572±0.127)

0.180±0.005

(4.572±0.127)

0.050

(1.270)

MAX

0.500

(12.70)

MIN UNCONTROLLED

LEAD DIMENSIONS

10°

NOM

5° NOM

N (TO-92 ) AMS DRW# 042391

0.90

(2.286)

NOM

0°-8° TYP

0.010-0.020

(0.254-0.508)

S (SO-8 ) AMS DRW# 042293

x 45°

0.016-0.050

(0.406-1.270)

0.008-0.010

(0.203-0.254)

0.004-0.010

(0.101-0.254)

0.014-0.019

(0.355-0.483)

0.053-0.069

(1.346-1.752)

0.050

(1.270)

TYP

0.150-0.157**

(3.810-3.988)

0.228-0.244

(5.791-6.197)

0.189-0.197*

(4.801-5.004)

*DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH

SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE

**DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD

FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE

1 2 3 4

8 7 6 5

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AMS4040

PACKAGE DIMENSIONS inches (millimeters) unless otherwise noted (Continued).

SOT-89 PLASTIC PACKAGE (L)

3 LEAD SOT-23 PLASTIC PACKAGE (M)

0.090-0.102

(2.29-2.60)

0.173-0.181

(4.40-4.60)

0.064-0.072

(1.62-1.83)

0.155-0.167

(3.94-4.25)

0.059

(1.50)

BSC

0.035-0.047

(0.89-1.20)

L (SOT-89 ) AMS DRW# 042392

0.118

(3.00)

BSC

0.014-0.019

(0.36-0.48)

0.017-0.022

(0.44-0.56)

0.084-0.090

(2.13-2.29)

0.055-0.063

(1.40-1.60) 0.014-0.017

(0.35-0.44)

0.047-0.055

(1.194-1.397)

0.015-0.017

(0.381-0.432)

0.110-0.120

(2.794-3.048)

0.083-0.098

(2.108-2.489)

0.035-0.040

(0.889-1.016)

0.070-0.080

(1.778-2.032) 0.018-0.024

(0.457-0.610)

10°

NOM

0.0034-0.0050

(0.086-0.127)

(SOT-23 ) AMS DRW# 051991

0.035-0.041

(0.089-1.041)

0.0005-0.0040

(0.013-0.102)

0.018-0.024

(0.457-0.610)

10°

NOM