1FEATURES

• Fixed Output Voltage of 2.5 V

• Tight Output Tolerances and Low Temperature

Coefficient

– Max 0.65%, 100 ppm/°C

• Low Output Noise: 35 μVRMS Typ

• Wide Operating Current Range: 45 μA Typ to

15 mA

• Stable With All Capacitive Loads; No Output

Capacitor Required

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

SUPPORTS DEFENSE, AEROSPACE,

AND MEDICAL APPLICATIONS

• Controlled Baseline

• One Assembly/Test Site

• One Fabrication Site

• Available in Military (–55°C/125°C)

Temperature Range(1)

• Extended Product Life Cycle

• Extended Product-Change Notification

• Product Traceability

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.