MAX5418LETA+T

Memory Type:	Non-Volatile
Base Part Number:	MAX5418
Supplier Device Package:	8-TDFN-EP (3x3)
Package / Case:	8-WDFN Exposed Pad
Operating Temperature:	-40°C ~ 85°C
Resistance - Wiper (Ohms) (Typ):	325
Temperature Coefficient (Typ):	35 ppm/°C
Tolerance:	±25%
Features:	Selectable Address
Voltage - Supply:	2.7 V ~ 5.25 V
Series:	--
Interface:	I²C
Resistance (Ohms):	100k
Number of Taps:	256
Number of Circuits:	1
Configuration:	Potentiometer
Taper:	Linear
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

MAX5418LETAT is a digital potentiometer solution introduced by Maxim Integrated. It is designed to support industrial, consumer and automotive applications that require multiturn voltage control and flexibility. The integrated device provides a full-range low-dropout linear-taper digipot, with adjustable voltage divider range that spans up to 65 V, dedicated switches and control signaling features, and a wide operating temperature range (from -40 °C to +85 °C).

Interfacing

The MAX5418LETAT is an ideal choice for many applications where accurate, low-cost, and low-power voltage division is needed. The device can be directly interfaced to an MCU, a host processor, or a DSP, based on the particular application. It is available in a variety of packages and pinouts, which makes it suitable for a wide range of use cases.

Key Features

The MAX5418LETAT offers the following key features:

• Up to 65V linear-taper potentiometer range
• Low (<1V) dropout voltage
• Wide temperature range
• High accuracy
• No-drift technology

Configuration

The MAX5418LETAT can be configured for a variety of applications and configurations. For example, it supports switchable or adjustable wiper position, bi-linear or non-linear tap settings, and single or dual voltage sources. It can be programmed to operate in either a simple or a triple switch configuration to adjust the potentiometer\'s range.

Application fields

MAX5418LETAT digital potentiometers can be used in a range of fields, including:

• Industrial automation
• Consumer electronics
• Medical devices
• Automotive

Working Principle

MAX5418LETAT digital potentiometers operate on a principle called “no-drift” technology. This technology enables the device to maintain a constant and accurate resistance across the range of the device. This technology also improves power efficiency, by reducing the amount of power required to switch the resistance in the device.The device consists of two power transistors, connected to two taps on the wiper. The wiper provides the adjustable resistance between the two taps, and is adjusted by varying the voltage level on each of the taps. The voltage level is adjusted with a voltage regulator, connected to the control pins of the device. When the desired resistance is reached, the power transistors will switch off, thereby maintaining the desired resistance.

Conclusion

In conclusion, MAX5418LETAT digital potentiometers are ideal for a variety of application fields that require the accurate, flexible and low-power voltage control they offer. They are also extremely reliable and have wide temperature ranges, making them an excellent choice for use in many types of applications.

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