LM4050AIM3X-2.5 National Semiconductor, LM4050AIM3X-2.5 Datasheet

LM4050AIM3X-2.5

Manufacturer Part Number

LM4050AIM3X-2.5

Description

Precision Micropower Shunt Voltage Reference

Manufacturer

National Semiconductor

Datasheet

1.LM4050AIM3X-2.5.pdf (14 pages)

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LM4050

Precision Micropower Shunt Voltage Reference

General Description

Ideal for space critical applications, the LM4050 precision

voltage reference is available in the sub-miniature (3 mm x

1.3 mm) SSOT-23 surface-mount package. The LM4050’s

design eliminates the need for an external stabilizing capaci-

tor while ensuring stability with any capacitive load, thus

making the LM4050 easy to use. Further reducing design ef-

fort is the availability of several fixed reverse breakdown volt-

ages: 2.500V, 4.096V, 5.000V, 8.192V, and 10.000V. The

minimum operating current increases from 60 µA for the

LM4050-2.5 to 100 µA for the LM4050-10.0. All versions

have a maximum operating current of 15 mA.

The LM4050 utilizes fuse and zener-zap reverse breakdown

voltage trim during wafer sort to ensure that the prime parts

have an accuracy of better than

Bandgap reference temperature drift curvature correction

and low dynamic impedance ensure stable reverse break-

down voltage accuracy over a wide range of operating tem-

peratures and currents.

All grades and voltage options of the LM4050 operate be-

tween −40˚C and +85˚C. Selected parts can operate in the

extended temperature range, from −40˚C and +125˚C.

Connection Diagrams

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

0.1% (A grade) at 25˚C.

DS101045

See NS Package Number MF03A

Top View

SSOT-23

DS101045-1

Features

n Small packages: SSOT-23

n No output capacitor required

n Tolerates capacitive loads

n Fixed reverse breakdown voltages of 2.500V, 4.096V,

Key Specifications (LM4050-2.5)

Applications

n Portable, Battery-Powered Equipment

n Data Acquisition Systems

n Instrumentation

n Process Control

n Energy Management

n Product Testing

n Automotive

n Precision Audio Components

n Output voltage tolerance

n Low output noise

n Wide operating current range

n Industrial temperature range

n Extended temperature range

n Low temperature coefficient

5.000V, 8.192V, and 10.000V

(A grade, 25˚C)

(10 Hz to 10 kHz)

−40˚C to +125˚C

50 ppm/˚C (max)

60 µA to 15 mA

−40˚C to +85˚C

41 µV

www.national.com

0.1% (max)

May 2000

rms

(typ)

Related parts for LM4050AIM3X-2.5

LM4050AIM3X-2.5 Summary of contents

Page 1

... Selected parts can operate in the extended temperature range, from −40˚C and +125˚C. Connection Diagrams *This pin must be left floating or connected to pin 2. © 2000 National Semiconductor Corporation Features n Small packages: SSOT- output capacitor required n Tolerates capacitive loads n Fixed reverse breakdown voltages of 2 ...

Page 2

... LM4050CIM3-4.1 LM4050CIM3-5.0 LM4050CIM3-8.2 LM4050CIM3-10 LM4050 Supplied as 1000 Units, Tape and Reel LM4050CEM3-2.5 Field Definition ± ± 0.1 0.2 +0.5%, 2 LM4050 Supplied as 3000 Units, Tape and Reel LM4050AIM3X-2.5 LM4050AIM3X-4.1 LM4050AIM3X-5.0 LM4050AIM3X-8.2 LM4050AIM3X-10 LM4050BIM3X-2.5 LM4050BIM3X-4.1 LM4050BIM3X-5.0 LM4050BIM3X-8.2 LM4050BIM3X-10 LM4050CIM3X-2.5 LM4050CIM3X-4.1 LM4050CIM3X-5.0 LM4050CIM3X-8.2 LM4050CIM3X-10 LM4050 Supplied as 3000 Units, Tape and Reel LM4050CEM3X-2 ...

Page 3

... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Reverse Current Forward Current Power Dissipation (T = 25˚C) (Note Package Storage Temperature (Note 2) Lead Temperature M3 Package Vapor phase (60 seconds) Infrared (15 seconds) ...

Page 4

LM4050-4.1 Electrical Characteristics (Industrial Temperature Range) Boldface limits apply for verse Breakdown Voltage tolerances of Symbol Parameter V Reverse Breakdown I R Voltage Reverse Breakdown I Voltage Tolerance (Note 7) I Minimum Operating ...

Page 5

LM4050-5.0 Electrical Characteristics (Industrial Temperature Range) Boldface limits apply for verse Breakdown Voltage tolerances of Symbol Parameter V Reverse Breakdown R Voltage Reverse Breakdown Voltage Tolerance (Note 7) I Minimum Operating Current RMIN ...

Page 6

LM4050-8.2 Electrical Characteristics (Industrial Temperature Range) Boldface limits apply for verse Breakdown Voltage tolerances of Symbol Parameter V Reverse Breakdown I R Voltage Reverse Breakdown I Voltage Tolerance (Note 7) I Minimum Operating ...

Page 7

LM4050-10.0 Electrical Characteristics (Industrial Temperature Range) Boldface limits apply for verse Breakdown Voltage tolerances of Symbol Parameter V Reverse Breakdown R Voltage Reverse Breakdown Voltage Tolerance (Note 7) I Minimum Operating Current RMIN ...

Page 8

Typical Performance Characteristics Output Impedance vs Frequency Reverse Characteristics and Minimum Operating Current Thermal Hysteresis www.national.com Output Impedance vs Frequency DS101045-10 Noise Voltage vs Frequency DS101045-12 DS101045-29 8 DS101045-11 DS101045-13 ...

Page 9

Start-Up Characteristics LM4050-5 30k S Functional Block Diagram LM4050-2.5 DS101045-5 LM4050-10.0 DS101045-8 DS101045- 30k S DS101045 30k S DS101045-9 www.national.com ...

Page 10

Applications Information The LM4050 is a precision micro-power curvature-corrected bandgap shunt voltage reference. For space critical applica- tions, the LM4050 is available in the sub-miniature SSOT-23 surface-mount package. The LM4050 has been designed for stable operation without the need of ...

Page 11

Typical Applications (Continued Ceramic monolithic *Tantalum FIGURE 2. LM4050-4.1’s Nominal 4.096 breakdown voltage gives ADC12451 1 mV/LSB DS101045-16 11 www.national.com ...

Page 12

Typical Applications (Continued) FIGURE 3. Bounded amplifier reduces saturation-induced delays and can prevent succeeding stage damage. Nominal clamping voltage is FIGURE 4. Protecting Op Amp input. The bounding voltage is (LM4050’s reverse breakdown voltage + 3 diode V www.national.com DS101045-17 ...

Page 13

Typical Applications (Continued) FIGURE 6. Precision 1 µ Current Sources ± FIGURE 5. Precision 4.096V Reference DS101045-21 13 DS101045-19 DS101045-22 www.national.com ...

Page 14

... NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant ...

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