LM4041 Precision Micropower Shunt Voltage Reference

1 Features

• 1.225V Fixed and adjustable outputs

(1.225V to 10V)

• Tight output tolerances and low temperature

coefficient

– Maximum 0.1%, 100ppm/°C – A grade

– Maximum 0.2%, 100ppm/°C – B grade

– Maximum 0.5%, 100ppm/°C – C grade

– Maximum 1.0%, 150ppm/°C – D grade

• Low output noise . . . 20μVRMS (typical)

• Wide operating current range . . .

45μA (typical) to 12mA

• Stable with all capacitive loads; no output

capacitor required

• Available in

– Industrial temperature: –40°C to 85°C

– Extended temperature: –40°C to 125°C

2 Applications

• Data-Acquisition Systems

• Power Supplies and Power-Supply Monitors

• Instrumentation and Test Equipment

• Process Control

• Precision Audio

• Automotive Electronics

• Energy Management/Metering

• Battery-Powered Equipment

3 Description

The LM4041 series of shunt voltage references are

versatile, easy-to-use references designed for a wide

array of applications. These parts do not require

external capacitors for operation and are stable

with all capacitive loads. Additionally, the reference

offers low dynamic impedance, low noise, and a low

temperature coefficient to maintain a stable output

voltage over a wide range of operating currents and

temperatures. The LM4041 uses fuse and Zener-zap

reverse breakdown voltage trim during wafer sort

to offer four output voltage tolerances, ranging from

0.1% (maximum) for the A grade to 1% (maximum) for

the D grade. Thus, a great deal of flexibility is offered

to designers in choosing the best cost-to-performance

ratio for applications. The LM4041 is available in

a fixed (1.225V nominal) or an adjustable version

(which requires an external resistor divider to set the

output to a value between 1.225V and 10V).

Packaged in space-saving SC-70 and SOT-23-3 and

requiring a minimum current of 45μA (typical), the

LM4041 also designed for portable applications. The

TO-92 package also is available for through-hole

packaging needs. The LM4041xI is characterized for

operation over an ambient temperature range of –

40°C to 85°C. The LM4041xQ is characterized for

operation over an ambient temperature range of –

40°C to 125°C.

LM4041

SLCS146H – FEBRUARY 2005 – REVISED MARCH 2025

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.