LT1021DCS8-5#TRPBF Power Path Management IC Voltage References Prec 5V Ref 20ppm/-uC
battery charge management ic
,power management integrated circuit
LT1021DCS8-5#TRPBF Power Path Management IC Voltage References Prec 5V Ref 20ppm/-uC
FEATURES
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Ultralow Drift: 5ppm/°C Max Slope
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Very Low Noise: <1ppm P-P (0.1Hz to 10Hz)
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100% Noise Tested
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Pin Compatible with Most Bandgap Reference
Applications, Including Ref 01, Ref 02, LM368, MC1400 and MC1404 with Greatly Improved Stability, Noise and Drift
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Trimmed Output Voltage
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Operates in Series or Shunt Mode
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Output Sinks and Sources in Series Mode
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>100dB Ripple Rejection
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Minimum Input/Output Differential of 1V
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Available in 5-Lead Can, N8 and S8 Packages
APPLICATIONS
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A/D and D/A Converters
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Precision Regulators
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Digital Voltmeters
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Inertial Navigation Systems
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Precision Scales
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Portable Reference Standard
DESCRIPTIO
The LT®1021 is a precision reference with ultralow drift and noise, extremely good long term stability and almost total immunity to input voltage variations. The reference output will both source and sink up to 10mA. Three voltages are available: 5V, 7V and 10V. The 7V and 10V units can be used as shunt regulators (two-terminal zeners) with the same precision characteristics as the three- terminal connection. Special care has been taken to mini- mize thermal regulation effects and temperature induced hysteresis.
The LT1021 references are based on a buried zener diode structure that eliminates noise and stability problems associated with surface breakdown devices. Further, a subsurface zener exhibits better temperature drift and time stability than even the best bandgap references.
Unique circuit design makes the LT1021 the first IC reference to offer ultralow drift without the use of high power on-chip heaters.
The LT1021-7 uses no resistive divider to set output voltage, and therefore exhibits the best long term stability and temperature hysteresis. The LT1021-5 and LT1021- 10 are intended for systems requiring a precise 5V or 10V reference with an initial tolerance as low as ±0.05%.
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