DS1845
NOT RECOMMENDED FOR NEW DESIGNSDual NV Potentiometer and Memory
- Part Models
- 9
- 1ku List Price
- Starting From $2.70
Overview
- 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
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.
Documentation
Data Sheet 1
Reliability Data 1
Application Note 3
Design Note 3
Technical Articles 8
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| DS1845B-010+ | Chip-Scale Ball-Grid Array | ||
| DS1845B-010+T&R | Chip-Scale Ball-Grid Array | ||
| DS1845B-050+ | Chip-Scale Ball-Grid Array | ||
| DS1845B-050+T&R | Chip-Scale Ball-Grid Array | ||
| DS1845E-010+ | Thin Shrink Small-Outline Package | ||
| DS1845E-010+T&R | Thin Shrink Small-Outline Package | ||
| DS1845E-050+ | Thin Shrink Small-Outline Package | ||
| DS1845E-050+T&R | Thin Shrink Small-Outline Package | ||
| DS1845E-100+ | Thin Shrink Small-Outline Package |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Dec 11, 2018 - 1754N ASSEMBLY |
||
| DS1845E-050+ | ||
| DS1845E-050+T&R | PRODUCTION | |
| DS1845E-100+ | ||
This is the most up-to-date revision of the Data Sheet.
Hardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Digital Potentiometers (DigiPOTs) 1 | ||
| DS1855 | NOT RECOMMENDED FOR NEW DESIGNS | Dual Nonvolatile Digital Potentiometer and Secure Memory |
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