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Manufacturer / Brand: AD
Details: Quad 64-Position I2C Nonvolatile Memory Digital Potentiometer IC
Series: AD5253
Quantity Available: Over 34380 pieces
Datasheet for EVAL-AD5254SDZ:
Product Parameters
- Manufacturer Part Number : EVAL-AD5254SDZ
- Manufacturer : AD
- Description : Quad 64-Position I2C Nonvolatile Memory Digital Potentiometer IC
- Series : AD5253
- Reference Price : USD 0
- Our Price : We have a better price, contact us by email
- Product Type : Digital Potentiometers (DigiPOT)
- Function : -
- Current Suggest : Production
- Status : Production
- ROHS Status : ROHS Compliant (Lead Free)
- Package Type : Evaluation Board
- Pins : -
- MFG Package Case : -
- Part Type : EVAL
- Standard Packing Type : -
- Standard Packing Quantity : -
- Working Temperature : -
- Other Part Number : EVAL-AD5254SDZ
- Shipping methods : DHL FEDEX UPS TNT
- Delivery Time : Ship within 1 day.
- Manufacturer Production time : 6-8 weeks (Normally have stocks)
- Weight : 0.001KG
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Features and Benefits of EVAL-AD5254SDZ
- Quad 64-position resolution
- 1 kΩ, 10 kΩ, 50 kΩ, 100 kΩ
- Nonvolatile memory1 stores wiper settings w/write protection
- Power-on refreshed to EEMEM settings in 300 μs typ
- EEMEM rewrite time = 540 μs typ
- Resistance tolerance stored in nonvolatile memory
- 12 extra bytes in EEMEM for user-defined information
- I2C-compatible serial interface
- Direct read/write access of RDAC2 and EEMEM registers
- Predefined linear increment/decrement commands
- Predefined ±6 dB step change commands
- See data sheet for additional features
The AD5253/AD5254 are quad-channel, I2C®, nonvolatile memory, digitally controlled potentiometers with 64/256 positions, respectively. These devices perform the same electronic adjust-ment functions as mechanical potentiometers, trimmers, and variable resistors.
The parts’ versatile programmability allows multiple modes of operation, including read/write access in the RDAC and EEMEM registers, increment/decrement of resistance, resistance changes in ±6 dB scales, wiper setting readback, and extra EEMEM for storing user-defined information, such as memory data for other components, look-up table, or system identification information.
The AD5253/AD5254 allow the host I2C controllers to write any of the 64-/256-step wiper settings in the RDAC registers and store them in the EEMEM. Once the settings are stored, they are restored automatically to the RDAC registers at system power-on; the settings can also be restored dynamically.
The AD5253/AD5254 provide additional increment, decrement, +6 dB step change, and –6 dB step change in synchronous or asynchronous channel update mode. The increment and decrement functions allow stepwise linear adjustments, with a ± 6 dB step change equivalent to doubling or halving the RDAC wiper setting. These functions are useful for steep-slope, nonlinear adjustments, such as white LED brightness and audio volume control.
The AD5253/AD5254 have a patented resistance-tolerance storing function that allows the user to access the EEMEM and obtain the absolute end-to-end resistance values of the RDACs for precision applications.The AD5253/AD5254 are available in TSSOP-20 packages in 1 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ options. All parts are guaranteed to operate over the –40°C to +85°C extended industrial temperature range.
1The terms nonvolatile memory and EEMEM are used interchangeably.
2The terms digital potentiometer and RDAC are used interchangeably.