LM4051

LM4051 Precision Micropower Shunt Voltage Reference February 2000 LM4051 Precision Micropower Shunt Voltage Reference General Description Ideal for space critical applications, the LM4051 precision voltage reference is available in the sub-miniature (3 mm x 1.3 mm) SSOT-23 surface-mount package. The LM4051’s advanced design eliminates the need for an external stabilizing capacitor while ensuring stability with any capacitive load, thus making the LM4051 easy to use. Further reducing design effort is the availability of a fixed (1.225V) and adjustable reverse breakdown voltage. The minimum operating current is 60 µA for the LM4051-1.2 and the LM4051-ADJ. Both versions have a maximum operating current of 12 mA. The LM4051 comes in three grades (A, B, and C). The best grade devices (A) have an initial accuracy of 0.1%, while the B-grade have 0.2% and the C-grade 0.5%, all with a tempco of 50 ppm/˚C guaranteed from −40˚C to 125˚C. The LM4051 utilizes fuse and zener-zap trim of reference voltage during wafer sort to ensure that the prime parts have an accuracy of better than ± 0.1% (A grade) at 25˚C. Key Specifications (LM4051-1.2) n Output voltage tolerance (A grade, 25˚C) n Low output noise (10 Hz to 10kHz) n Wide operating current range n Industrial temperature range (tempco guaranteed from −40˚C to +125˚C) n Low temperature coefficient ± 0.1%(max) 20µVrms 60µA to 12mA −40˚C to +85˚C 50 ppm/˚C (max) Applications n n n n n n n n n n n Portable, Battery-Powered Equipment Da...