Category: Hardware
Product Number: Voltage References
Hello, I have the following two questions to consult with you.Looking forward to your reply. Thank you very much!
Problem 1:
Regarding the noise testing of ADR1001, the noise level above 100 Hz is comparable to the datasheet specifications, but the noise below 100 Hz is significantly higher and exhibits a 1/f-like spectral shape (the test equipment's floor noise is low, so the noise is not introduced by the equipment). The ADR1001 is powered by a 12V mercury-free alkaline battery. How can the increased noise level below 100 Hz be addressed, and how were the noise specifications in the datasheet measured?
Problem 2:
Regarding the stability testing of ADR1001, under the condition where ambient temperature fluctuations are less than 1°C, an 8.5-digit multimeter (sampling at 1 Hz) was used to measure the stability of the 5V output. The recorded fluctuation within one hour was approximately 1 ppm (based on the last hour of a 3-hour test session), which is significantly higher than the 0.2 ppm/°C specified in the datasheet. How are the stability parameters in the datasheet measured?
