* Pin 3 is attached to substrate and must be

connected to ANODE or left open.

DBZ (SOT-23) PACKAGE

(TOP VIEW)

CATHODE

ANODE

1

2

3*

LM4040-EP

www.ti.com

SLOS746A

– SEPTEMBER 2011 – REVISED SEPTEMBER 2011

PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE

Check for Samples: LM4040-EP

1

FEATURES

SUPPORTS DEFENSE, AEROSPACE,

AND MEDICAL APPLICATIONS

•

Fixed Output Voltage of 2.5 V

•

Controlled Baseline

•

Tight Output Tolerances and Low Temperature

Coefficient

•

One Assembly/Test Site

– Max 0.65%, 100 ppm/°C

•

One Fabrication Site

•

Low Output Noise: 35

•

Available in Military (

–55°C/125°C)

•

Wide Operating Current Range: 45

μA Typ to

15 mA

•

Extended Product Life Cycle

•

Stable With All Capacitive Loads; No Output

•

Extended Product-Change Notification

Capacitor Required

•

Product Traceability

APPLICATIONS

•

Data-Acquisition Systems

•

Power Supplies and Power-Supply Monitors

•

Instrumentation and Test Equipment

•

Process Controls

•

Precision Audio

•

Automotive Electronics

•

Energy Management

•

Battery-Powered Equipment

(1)

Custom temperature ranges available

DESCRIPTION/ORDERING INFORMATION

The LM4040 series of shunt voltage references are versatile, easy-to-use references that cater to a vast array of

applications. The 2-pin fixed-output device requires no external capacitors for operation and is stable with all

capacitive loads. Additionally, the reference offers low dynamic impedance, low noise, and low temperature

coefficient to ensure a stable output voltage over a wide range of operating currents and temperatures. The

LM4040 uses fuse and Zener-zap reverse breakdown voltage trim during wafer sort to offer an output voltage

tolerance of 0.65%.

Packaged in a space-saving SOT-23-3 package and requiring a minimum current of 45

μA (typ), the LM4040

also is ideal for portable applications. The LM4040C25 is characterized for operation over an ambient

temperature range of

–55°C to 125°C.

DEVICE

ORDERABLE

TOP-SIDE

PACKAGE

GRADE

PART NUMBER

0.65% initial

accuracy

and

–55°C to 125°C

2.5 V

SOT-23-3 (DBZ)

Reel of 250

LM4040C25MDBZTEP

SAGU

100 ppm/

°C

temperature

coefficient

(1)

For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI

web site at www.ti.com.

(2)

The actual top-side marking has one additional character that designates the wafer fab/assembly site.

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Copyright

© 2011, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.