1 Features

• LM4040-N-Q1 AEC Q-100 qualified for automotive

applications

– Extended Grade 1: −40°C to +125°C, TA

– Industrial Grade 3: −40°C to +85°C, TA

• Small packages: SOT-23, TO-92, and SC70

• No output capacitor required

• Tolerates capacitive loads

• Fixed reverse breakdown voltages of 2.048V, 2.5V,

3V, 4.096V, 5V, 8.192V, and 10V

• Key specifications (2.5V LM4040-N)

– Output voltage tolerance (A Grade, 25°C):

±0.1% (maximum)

– Low output noise (10Hz to 10kHz): 35μVrms

(typical)

– Wide operating current range: 60μA to 15mA

– Industrial temperature range: −40°C to +85°C

– Extended temperature range: −40°C to +125°C

– Low temperature coefficient: 100ppm/°C

(maximum)

2 Applications

• Field Transmitters

• Energy Infrastructure

• Data Acquisition

• Analog Input Module

• Automotive

• Audio and Video

3 Description

Designed for space-critical applications, the LM4040-

N precision voltage reference is available in small

SC70 and SOT-23 surface-mount package. The

advanced design of the LM4040-N eliminates the

need for an external stabilizing capacitor while

maintaining stability with any capacitive load, thus

making the LM4040-N easy to use. Further reducing

design effort is the availability of several fixed reverse

breakdown voltages: 2.048V, 2.5V, 3V, 4.096V, 5V,

8.192V, and 10V. The minimum operating current

increases from 60μA for the 2.5V LM4040-N to 100μA

for the 10V LM4040-N. All versions have a maximum

operating current of 15mA.

The LM4040-N uses a fuse and Zener-zap reverse

breakdown voltage trim during wafer sort to make

sure that the prime parts have an accuracy of

better than ±0.1% (A grade) at 25°C. Bandgap

reference temperature drift curvature correction and

low dynamic impedance provide stable reverse

breakdown voltage accuracy over a wide range of

operating temperatures and currents.

Also available is the LM4041-N with two reverse

breakdown voltage versions: adjustable and 1.2V.

See the LM4041-N data sheet (SNOS641).