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.