Hier werden die Unterschiede zwischen zwei Versionen angezeigt.
Beide Seiten der vorigen Revision Vorhergehende Überarbeitung Nächste Überarbeitung | Vorhergehende Überarbeitung | ||
mkz-nv-meter [2016/01/29 00:04] dokuwikiadmin [Buttons] |
mkz-nv-meter [2017/04/04 06:45] (aktuell) karl [Buttons] |
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====== Concept for a handy Nanovoltmeter, | ====== Concept for a handy Nanovoltmeter, | ||
based on the AD7190, 24-Bit delta sigma ADC | based on the AD7190, 24-Bit delta sigma ADC | ||
+ | {{ :: | ||
===== Features ===== | ===== Features ===== | ||
Zeile 6: | Zeile 7: | ||
* Bargraph | * Bargraph | ||
* DC/AC measurements with 0.1, 1 or 10 Updates per second | * DC/AC measurements with 0.1, 1 or 10 Updates per second | ||
- | * Autorange | + | * Autorange: |
* Gain=1: ±4.096V | * Gain=1: ±4.096V | ||
* Gain=8: ±512mV | * Gain=8: ±512mV | ||
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===== Components ===== | ===== Components ===== | ||
==== ADC ==== | ==== ADC ==== | ||
- | * AD7190 | + | |
* 24 bit | * 24 bit | ||
* delta sigma | * delta sigma | ||
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==== Reference ==== | ==== Reference ==== | ||
- | * LTC6655 | + | |
* hermetically sealed LS8 package | * hermetically sealed LS8 package | ||
* ±250ppm initial accuracy | * ±250ppm initial accuracy | ||
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* SPI | * SPI | ||
* 240x320 | * 240x320 | ||
+ | * Backlight | ||
+ | * Colour | ||
==== Buttons ==== | ==== Buttons ==== | ||
Zeile 64: | Zeile 67: | ||
* OK | * OK | ||
* Shunt | * Shunt | ||
+ | |||
+ | {{tag> | ||
+ |