DS1859B-020+

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):	20k
Number of Taps:	256
Number of Circuits:	2
Configuration:	Rheostat
Taper:	Linear
Part Status:	Active
Packaging:	Tray

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DS1859B-020+ Application Field and Working Principle

Digital potentiometers (DPs) are devices used in analog applications to adjust the value of some parameter in a circuit. The DS1859B-020+ is an advanced dual-channel digital potentiometer from Maxim Integrated which is suitable for systems requiring variable gain adjustments and which has multiple applications in the industrial, consumer, and automotive markets.

Features

The DS1859B-020+ offers Ethernet connectivity, allowing for communication and control over the internet. It also supports I2C and UART communication, enabling numerous communication solutions for embedded systems. This device is highly configurable, with a rheostat gain of up to 4096 steps and a low on-resistance of 30 mΩ. The device also supports an external control signal input, allowing for manual control. Additionally, the device can operate in both reading and writing modes, allowing for efficient control.

Uses

The DS1859B-020+ can be used in a variety of digital applications. It is well-suited for adjustable gain applications such as digital audio amplifiers. The device can also be used in motor speed control or in communications systems requiring adjustable gain. The device is also useful in the automotive sector, providing optimal adjustment of feedback circuits.

Working Principle

The DS1859B-020+ uses a variable-gain analog architecture, which uses transistors, resistors, and capacitors to form a variable resistance network. This variable resistance network is linked to a control input, and when this input value changes, the resistance of the network changes accordingly. When this resistance is changed, the amount of current flowing through the circuit will be affected, which will in turn affect the gain of the output signal.The device is programmed through the use of software, such as the Maxim Integrated Data Acquisition Software (DAS). The DAS allows for the adjustment of the on-resistance, gain values, and external control parameters. The user can also adjust the active or settling signals and outputs, allowing for a greater flexibility in the device\'s operation.

Conclusion

The DS1859B-020+ is a dual-channel analog digital potentiometer which offers Ethernet connectivity, I2C and UART communication, and a rheostat gain of up to 4096 steps. This device is useful in various digital applications, such as audio amplifiers, motor speed control, and communications systems. The working principle of the device is based on a variable-gain analog architecture, and it can be programmed with software such as the Maxim Integrated Data Acquisition Software (DAS). This makes the DS1859B-020+ an ideal choice for applications requiring adjustable gain.

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