Analysis
5ppm/°C Voltage Reference Features Very Low Noise
Linear Technology has announced the LTC6652, a precision low noise series voltage reference with an initial accuracy of 0.05% and maximum voltage drift of 5ppm/°C. The LTC6652 offers excellent load and line regulation, and noise of only 2.1ppm. The combination of precision and low noise makes the LTC6652 ideal for precision data acquisition and medical instrumentation.
WithThe LTC6652 operates with supply voltages up to 13.2V and has a dropout voltage of 300mV. A shutdown feature allows the quiescent current to be reduced from 350uA to less than 2uA, a useful feature for high-resolution instrumentation that demands both low noise and low power consumption. In addition, board space is minimized since the LTC6652 does not require a load capacitor.
The combination of high precision, low noise and a wide temperature range will appeal to designers of high performance industrial and automotive applications, says Brendan Whelan, design manager for Linear Technology.
The LTC6652 family is offered in seven output voltages: 1.25V, 2.048V, 2.5V, 3.0V, 3.3V, 4.096V and 5V.
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