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78L03 Datasheet

Sign up or log in Sign up using Google. Sign up using Email and Password. Email Required, but never shown. You must provide the reference voltage, which will directly affect the accuracy of your ADC.

78L03 datasheet, 78L03 datasheets, manuals for 78L03 electornic semiconductor part

I will connect a voltage divider to the input of fatasheet ADC to measure the voltage. I see no mention of internal reference in the Table of Contents. Tie that to VDD. A reasonable choice would be an external 2.


I found the equations to calculate the result. There is a paper discussing this, for a thermistor of Kohm; check on robustcircuitdesign. Spehro Pefhany k 4 datashdet This is a link to the data sheet and a pic of the ADC operation conditions.

By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. I went through another document which was 18MB and found no Vref. By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies. You datashret go as low as 1.

AngeloQ 1, 1 5 Post as a guest Name. Sign up using Facebook. Bridges, such as strain gauges, are one such sensor. Remember to filter and decouple with a RC circuit if you do not have a separate Vref regulator such as the 78L Even an inexpensive TL will be okay at maximum conversion rate. Datashwet you want tighter tolerance than the 0. Post Your Answer Discard By clicking datasheet Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is datasheer to these policies.


Your reported 7l803 will only be as accurate as the VDD. Some sensors are ratio-metric and thus tolerate variations in VREF. You could use the supply voltage however that is usually a pretty crude and noisy reference source. The Varef pin has high impedance when the converter is not operating, however it draws 30pC typically per conversion. Have you examined the code-spread caused by external noise sources that datasheer into your sensor, or into your wiring between sensor and ADC, or into your ADC IC?

ADC just survives with external ref.

Page 38 of datasheet shows a VREF pin. Home Questions Tags Users Unanswered.