Part # LM4051 datasheet

Part Manufacturer: National Semiconductor

National Semiconductor

Part Description: LM4051 Precision Micropower Shunt Voltage Reference

Part Details:

LM4051 March 2005 Precision LM4051Precision Micropower Shunt Voltage ReferenceGeneral Description j Low output noise Ideal for space critical applications, the LM4051 precision (10 Hz to 10kHz) 20µVrms Micropower voltage reference is available in the sub-miniature (3 mm x j Wide operating current range 60µA to 12mA 1.3 mm) SOT-23 surface-mount package. The LM4051 s ad- j Industrial temperature range -40°C to +85°C vanced design eliminates the need for an external stabilizingcapacitor while ensuring stability with any capacitive load, j Extended temperature range -40°C to +125°C thus making the LM4051 easy to use. Further reducing j Low temperature coefficient 50 ppm/°C (max) design effort is the availability of a fixed (1.225V) and adjust-able reverse breakdown voltage. The minimum operatingcurrent is 60 µA for the LM4051-1.2 and the LM4051-ADJ. Applications Both versions have a maximum operating current of 12 mA. n Portable, Battery-Powered Equipment Shunt The LM4051 comes in three grades (A, B, and C). The best n Data Acquisition Systems grade devices (A) have an initial accuracy of 0.1%, while the n Instrumentation B-grade have 0.2% and the C-grade 0.5%, all with a tempco n Process Control of 50 ppm/°C guaranteed from -40°C to 125°C. n Energy Management V The LM4051 utilizes fuse and zener-zap trim of reference n Automotive and Industrial oltage voltage during wafer sort to ensure that the prime parts have n Precision Audio Components an accuracy of better than ±0.1% (A grade) at 25°C. n Base Stations Features n Battery Chargers n Medical Equipment Reference n Small packages: SOT-23 n Communication n No output capacitor required n Tolerates capacitive loads n Reverse breakdown voltage options of 1.225V and adjustable Key Specifications (LM4051-1.2) j Output voltage tolerance (A grade, 25°C)

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LM4051.pdf Datasheet