CAT5140数据手册集成电路（IC）的数字电位计规格书PDF

描述 Description

The CAT5140 is a single channel non-volatile 256-tap digital POT. This digital POT is comprised of a series of equal value resistor elements connected between two externally accessible end points. The tap points between each resistive element can be selectively connected to the wiper output via internal CMOS switches forming a linear taper electronic potentiometer.The CAT5140 contains a volatile wiper register (WR) and an 8-bit non-volatile EEPROM for wiper position and 5 additional non-volatile registers for general purpose data storage. Programming of the registers is controlled via I2C interface. On power up, the wiper position is reset to the most recent value stored in the non-volatile memory register (IVR).The CAT5140 operates over the industrial temperature range of -40°C to +85°C.

特性 Features

• 400 kHz I2C Compatible Interface
• 256 Position Linear Taper Potentiometer
• End-to-End Resistance = 50 kΩ / 100 kΩ
• TCR = 100 ppm/°C (typical)
• Standby Current = 2 µA (max)
• Typical Wiper Resistance = 70 Ω @ 3.3 V
• Operating Voltage = 2.5 V to 5.5 V
• 6 Registers 8-bit Non-volatile EEPROM
• 2,000,000 Data Write Stores
• 100 Year Data Retention
• 8-Lead MSOP Package
• Pb-free RoHS Compliant: NiPdAu Plating

应用 Application

• Gain Adjustment and Line Impedance Matching
• Automated Calibration
• Contrast, Brightness and Volume Control
• LCD Screen Adjustment
• Instrumentation for Handheld, Portable Devices
• Industrial Automation for Handheld, Portable Devices
• Portable Games

简介

CAT5140属于集成电路（IC）的数字电位计。由制造生产的CAT5140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。