• Tight Output Tolerances and Low Temperature Coefficient

  • – Max 0.1%, 100 ppm/°C – A Grade

  • – Max 0.2%, 100 ppm/°C – B Grade

  • – Max 0.5%, 100 ppm/°C – C Grade

  • – Max 1.0%, 150 ppm/°C – D Grade

• 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

• Available in Extended Temperature Range: –40°C to 125°C

  
  

2 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

3 Description

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 four output voltage tolerances, ranging from 0.1% (max) for the A grade to 1% (max) for the D grade. Thus, a great deal of flexibility is offered to designers in choosing the best cost-to- performance ratio for their applications.

Packaged in space-saving SC-70 and SOT-23-3 packages and requiring a minimum current of 45 μA (typ), the LM4040 also is ideal for portable applications. The LM4040xI is characterized for operation over an ambient temperature range of –40°C to 85°C. The LM4040xQ is characterized for operation over an ambient temperature range of –40°C to 125°C.

Device Information