DS1859B-050+T&R

Memory Type:	Non-Volatile
Base Part Number:	DS1859
Supplier Device Package:	16-CSBGA (4x4)
Package / Case:	16-LBGA, CSPBGA
Operating Temperature:	-40°C ~ 95°C
Resistance - Wiper (Ohms) (Typ):	--
Temperature Coefficient (Typ):	50 ppm/°C
Tolerance:	±20%
Features:	Selectable Address, Temperature Sensor
Voltage - Supply:	2.85 V ~ 5.5 V
Series:	--
Interface:	I²C
Resistance (Ohms):	50k
Number of Taps:	256
Number of Circuits:	2
Configuration:	Rheostat
Taper:	Linear
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Digital Potentiometers

Digital potentiometers are used for precise control of analog signals. Their main advantage is that they are programmable, allowing for greater flexibility and precision when controlling analog signals. DS1859B-050+T&R is a digitally-programmable non-volatile potentiometer and is especially suited for applications that require precise signal control.

DS1859B-050+T&R Application Fields

DS1859B-050+T&R is used in a wide range of applications that require precise signal control, such as volume controls, motor speed and torque control, sound and picture quality control, and vehicle speed and steering control. It can also be used in medical applications such as glucose monitors, pH measurement, patient monitor adjustment, and anesthesia delivery.

Features

The DS1859B-050+T&R offers a wide range of features, with the following being the most important:- Programmable Resolution: This device can be programmed to any resolution of up to 10 bits, enabling precise control of analog signals.- Non-Volatile Memory: The device is non-volatile, meaning that its settings will be retained even without power.- Temperature Range: The device is rated for operation from -40°C to 85°C, making it suitable for a wide range of applications.- ESD Protection: The chip has been built to withstand electrostatic discharge (ESD) up to 8kV without suffering any damage.- Interfaces: The device features both analog and digital interfaces, allowing it to be connected to a wide range of systems.

Working Principle

The working principle of the DS1859B-050+T&R is as follows:The device consists of a memory array, a digital interface (Serial Peripheral Interface (SPI), I2C, or micropower USART (UART)), an external voltage reference, and a wiper switch assembly. A two-Wire serial interface is the main method of data communication between the device and the host processor.An external voltage reference is used to measure the pot’s actual voltage setting. The external reference can also be used do provide a DC level of up to 2.5V as a reference for the non-volatile memory contents. The non-volatile memory array is used for storing the potentiometer setting, and is protected from data corruption or losses in the event of a power failure.The wiper switch provides the voltage level that controls the output of the digital potentiometer. The output voltage is proportional to the memory value, which is stored in the non-volatile memory array. The output voltage can be adjusted in discrete steps, allowing for precise control over the output voltage.

Conclusion

The DS1859B-050+T&R is a digitally-programmable non-volatile potentiometer that is especially suited for applications that require precise signal control. Its features include programmable resolution, non-volatile memory, temperature range, ESD protection, and interfaces. Its working principle is based on a memory array, digital interface, external voltage reference, and a wiper switch assembly. This device can be used in a wide range of applications and is suitable for use in both digital and analog signal control.

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