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DS1845：双路、非易失电位器和存储器

The DS1845 Dual NV Potentiometer and Memory consists of one 100-position linear taper potentiometer, one 256-position linear taper potentiometer, 256 bytes of EEPROM memory, and a 2-wire interface. The device provides an ideal method for setting bias voltages and currents in control applications using a minimum of circuitry. The EEPROM memory allows a user to store configuration or calibration data for a specific system or device as well as provide control of the potentiometer wiper settings. Any type of user information may reside in the first 248 bytes of this memory. The next two addresses of EEPROM memory are for potentiometer settings. Access to this EEPROM is via an industry standard 2-wire bus. The wiper position of the DS1845, as well as EEPROM data, can be hardware write-protected using the Write Protect (WP) input pin. Up to eight DS1845s can be installed on a single 2-wire bus. Access to an individual device is achieved by using a device address that is determined by the logic levels of address pins A0 though A2. Additionally, the DS1845 will operate from 3 volt or 5 volt supplies. Three package options are available: Flip Chip Package, 16-ball CSBGA and 14-pin TSSOP.

关键特性 Two linear taper potentiometers DS1845-010 one 10k, 100 position & one 10k, 256 position DS1845-050 one 10k, 100 position & one 50k, 256 postition DS1845-100 one 10k, 100 position & one 100k, 256 position 256 bytes of EEPROM memory Access to data and potentiometer control via an I2C compatible 2-wire interface External Write Enable pin to protect data and potentiometer settings Nonvolatile wiper storage Operates from 3V or 5V supplies Packaging: Flip Chip Package, 16-ball CSBGA, 14-pin TSSOP Industrial operating temperature: -40°C to +85°C

DS1845：引脚分配

数据手册DataSheet

关键参数

技术资料

• Adding Windows NT/2000/XP Support to the AN3315 Parallel-Port 2-Wire Software
• Writing Parallel-Port 2-Wire Software in C
• Behind the Light Show in Optical Transceivers
• Methods of Controlling Laser Drivers: POTs and DACs
• Step-Up DC-DC Converter Calibration and Adjustment Using a Digital Potentiometer
• 2-Wire Communication Using LabVIEW
• DS1845/DS1855 Temperature Coefficient Analysis

质量和环境数据

• DS1845.pdf

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