The TL4051 series of shunt voltage references are versatile easy-to-use references suitable for a wide array ofapplications. The device is available in a fixed 1.225-V output or an adjustable output whose voltage isdetermined by an external resistor divider. The device requires no external capacitors for operation and is stablewith all capacitive loads. Additionally, the reference offers low dynamic impedance, low noise, and lowtemperature coefficient to ensure a stable output voltage over a wide range of operating currents andtemperatures.
The TL4051 is offered in three initial tolerances, ranging from 0.1% (max) for the A grade to 0.5% (max) for theC grade. Thus, a great deal of flexibility is offered to designers in choosing the best cost-to-performance ratio fortheir applications. Packaged in the space-saving SOT-23-3 and SC-70 packages and requiring a minimumcurrent of 45 µA (typ), the TL4051 also is ideal for portable applications.The TL4051xI is characterized for operation over an ambient temperature range of –40°C to 85°C. TheTL4051xQ is characterized for operation over an ambient temperature range of –40°C to 125°C.
1.225-V Fixed and Adjustable (1.225-V to 10-V) Outputs
Tight Output Tolerances and Low Temperature Coefficient
Max 0.1%, 50 ppm/°C — A Grade
Max 0.2%, 50 ppm/°C — B Grade
Max 0.5%, 50 ppm/°C — C Grade
Low Output Noise. . 20 µVRMS (Typ)
Wide Operating Current Range. . .60 µA (Typ) to 12 mA
Stable With All Capacitive Loads; No Output Capacitor Required