CAT5138数据手册集成电路（IC）的数字电位计规格书PDF

描述 Description

CAT5136, CAT5137, and CAT5138 are a family of digital POTs operating like mechanical potentiometers in various configurations. The tap points between the 127 equal resistive elements are connected to the wiper output via CMOS switches. The switches are controlled by a 7-bit Wiper Control Register (WCR) via the I2C serial bus. CAT5136 is configured as a variable resistor. CAT5137 and CAT5138 are resistive voltage dividers, with one terminal of the potentiometer connected to GND. CAT5137 and CAT5138 have different device IDs, which makes it possible to use both on the same I2C bus. Upon power-up, the WCR is set to mid-scale (1000000).

特性 Features

• Single Linear digital POT with 128 Taps
• High Resolution
• I2C Interface
• Easy to Integrate in Application
• Low Standby Current
• Low Power Loss
• End-to-End Resistance of 10 kΩ, 50 kΩ and 100 kΩ
• Wiper goes to Midscale at Power-up
• Digital Supply Range (VDD): 2.7 V to 5.5 V
• Industrial Temperature Range: -40°C to +85°C

应用 Application

• LCD Screen Adjustment
• Volume Control
• Mechanical Potentiometer Replacement
• Gain Adjustment
• Line Impedance Matching
• VCOM Setting Adjustments
• Industrial Equipment

简介

CAT5138属于集成电路（IC）的数字电位计。由制造生产的CAT5138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。