CAT5191中文资料Digital Potentiometer (POT), 256-Tap, I2C Compatible, Extended Temperature Range数据手册ONSEMI规格书

描述 Description

The CAT5191 is a 256-position linear taper digital POT ideally suited for replacing mechanical potentiometers and variable resistors.The wiper settings are controlled through an I2C-compatible digital interface. Upon power-up, the wiper assumes a midscale position and may be repositioned anytime after the power is stable. The device can be programmed to reset the wiper position to midscale or to go to a shutdown state during operation. An address input pin, AD0, allows the connection of two devices onto the same I2C bus.The CAT5191 operates from 2.7 V to 5.5 V, while consuming less than 2 µA. This low operating current, combined with a small package footprint, makes the CAT5191 ideal for battery-powered portable applications.The CAT5191 is designed as a pin for pin replacement for the AD5245 and operates over the -40°C to +85°C industrial temperature range.

特性 Features

• 256-position
• End-to-End Resistance: 50 kΩ, 100 kΩ
• I2C Compatible Interface
• Power-on Preset to Midscale
• Single Supply 2.7 V to 5.5 V
• Low Temperature Coefficient 100 ppm/°C
• Low Power, IDD 2 µA max
• Extended Operating Temperature -40°C to +125°C

应用 Application

• Potentiometer Replacement
• Transducer Adjustment of Pressure, Temperature, Position, Chemical, and Optical Sensors
• RF Amplifier Biasing
• Gain Control and Offset Adjustment
• Industrial Equipment

简介

CAT5191属于集成电路（IC）的数字电位计。由ONSEMI制造生产的CAT5191数字电位计数字电位器是一系列集成电路器件，可提供类似于传统机械电位器或变阻器的可调节电阻，但通过电子信号而非机械输入来进行控制。虽然这些器件的电阻可耗散的电能相对有限，但其电子控制能力有助于小型化、自动化和远程控制信号级模拟电路，而这些电路本来可能会使用机械电位器。