Gast
#620834
Hallo Leute Kennt jemand ein digitales Poti mit I2C , das im DIP8 Package kommt? Jetzt kommt der HAcken : mit 1 Mega Ohm
Gast
#620838
Schau mal bei Maxim und Analog Devices Da sollte bestimmt was zu finden sein.!! mfg Roger
Gast
#621206
Digitalpotis mit mehr als 100kOhm hab ich noch nicht gesehen. Du solltest überlegen, die Schaltung neu zu dimensionieren.
Gast
#621279
FULL DATA SHEET (PDF, 1.3MB) Download E-Mail PART NUMBER TABLE Options, grades, packages Free Samples Buy RoHS/Lead-Free status Sign up for this FREE web seminar. Learn how to identify, measure and resolve audio system issues. The DS2890 is a linear taper digitally controlled potentiometer with 256 wiper positions. Device operation, including wiper position, is controlled over the single contact 1-Wire bus for the ultimate in electrical interface simplicity. With a wide 0–11 volt working voltage range for the potentiometer terminals, the DS2890 is ideal for a broad range of industrial and control applications. Potentiometer terminal voltage is independent of device supply voltage as well as the voltage applied to the other potentiometer terminals. Communication with the DS2890 follows the standard Dallas Semiconductor 1-Wire protocol and can be accomplished with minimal hardware such as a single port pin of a microcontroller. Multiple DS2890 devices can reside on a common 1-Wire bus and be operated independently of each other. Each DS2890 has its own unalterable 64-bit ROM registration number that is factory lasered into the chip. The registration number guarantees unique identification for absolute traceability and is used to address the device in a multi-drop 1-Wire Network environment. The DS2890 will respond to a 1-Wire Conditional Search command if the potentiometer wiper is set at the power-on default position. This feature enables the bus master to easily determine whether a potentiometer has gone through a power-on reset and needs to be re-configured with a required wiper position setting. The DS2890 supports two power modes: a) 1-Wire only mode in which device power is supplied parasitically from the 1-Wire and b) VDD mode where power is supplied from an external supply With a VDD supply the device can support both a potentiometer and variable resistor configuration. When operating in a 1-Wire only power mode the device supports only a variable resistor configuration.
Gast
#637995
Hallo, kennt jemand ein dig.Poti mit 100E? danke.
Gast
#638083
Wird es vermutlich nicht geben, da die einzelnen (Teil-)Widerstände nicht soooo niederohmig hergestellt werden können. Ist der niedrige Widerstand denn unbedingt erforderlich ?
Was willst du damit machen? MFG Falk