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 pA (typ), the LM4040 also is ideal for portable applications. The LM4040xl 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.
Fixed Output Voltages of 2.048 V, 2.5 V, 3 V, 4.096 V. 5 V, 8.192 V, and 10 V
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 pVrms Typ
Wide Operating Current Range: 45 pA Typ to 15 mA
Stable With All Capacitive Loads; No Output Capacitor Required
Available in Extended Temperature Range: -40°C to 125°C