基于LM4041A12的1.2V 精密微功耗并联电压参考，0.1% 精确度 - 系统集成论坛

　　The LM4041 series of shunt voltage references are versatile, easy-to-use references suitable for a wide array of applications. They require no external capacitors for operation and are stable with all capacitive loads. Additionally, the reference offers low dynamic impedance, low noise, and a low temperature coefficient to ensure a stable output voltage over a wide range of operating currents and temperatures. The LM4041 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. The LM4041 is available in a fixed (1.225 V nominal) or an adjustable version (which requires an external resistor divider to set the output to a value between 1.225 V and 10 V).

Packaged in space-saving SC-70 and SOT-23-3 and requiring a minimum current of 45 µA (typ), the LM4041 also is ideal for portable applications. The TO-92 package also is available for through-hole packaging needs. The LM4041xI is characterized for operation over an ambient temperature range of -40°C to 85°C. The LM4041xQ is characterized for operation over an ambient temperature range of -40°C to 125°C.

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　　1.225-V Fixed and Adjustable Outputs (1.225 V to 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 . . . 20 µVRMS (Typ)

　　Wide Operating Current Range . . . 45 µA (Typ) to 12 mA

　　Stable With All Capacitive Loads; No Output Capacitor Required

　　Industrial Temperature: -40°C to 85°C

　　Extended Temperature: -40°C to 125°C

　　Data-Acquisition Systems

　　Power Supplies and Power-Supply Monitors

　　Instrumentation and Test Equipment

　　Process Control

　　Precision Audio

　　Automotive Electronics

　　Energy Management/Metering

　　Battery-Powered Equipment