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Updated at 17/06/2025 10:30:15(UTC+8)
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Description
- Product Details
- The AD5228 is Analog Devices’ latest 32-step-up/step-down control digital potentiometer emulating mechanical potenti-ometer operation1. Its simple up/down control interface allows manual control with just two external pushbutton tactile switches. The AD5228 is designed with a built-in adaptive debouncer that ignores invalid bounces due to contact bounce commonly found in mechanical switches. The debouncer is adaptive, accommodating a variety of pushbutton tactile switches that generally have less than 10 ms of bounce time during contact closures. When choosing the switch, the user should consult the timing specification of the switch to ensure its suitability in an AD5228 application.
- The AD5228 can increment or decrement the resistance in discrete steps or in autoscan mode. When the PU or PD button is pressed briefly (no longer than 0.6 s), the resistance of the AD5228 changes by one step. When the PU or PD button is held continuously for more than a second, the device activates the autoscan mode and changes four resistance steps per second.
- The AD5228 can also be controlled digitally; its up/down features simplify microcontroller usage. The AD5228 is available in a compact thin SOT-23-8 (TSOT-8) package. The part is guaranteed to operate over the automotive temperature range of −40°C to +105°C.
- The AD5228’s simple interface, small footprint, and very low cost enable it to replace mechanical potentiometers and trimmers with typically 3× improved resolution, solid-state reliability, and faster adjustment, resulting in considerable cost saving in end users’ systems.
- Users who consider EEMEM potentiometers should refer to the recommendations in the Applications section.
- **Applications**
- * Mechanical potentiometer and trimmer replacements
- * LCD backlight, contrast, and brightness controls
- * Digital volume control
- * Portable device-level adjustments
- * Electronic front panel-level controls
- * Programmable power supply
- 1 The terms digital potentiometer and RDAC are used interchangeably.
- ### Features and Benefits
- 32-position digital potentiometer
- 10 kΩ, 50 kΩ, 100 kΩ
- end-to-end terminal resistance
- Simple manual up/down control
- Self-contained, requires only 2 pushbutton tactile switches
- Built-in adaptive debouncer
- Discrete step-up/step-down control
- Autoscan up/down control with
- 4 steps per second
- Pin-selectable zero-scale/midscale preset
- Low potentiometer mode tempco,
- 5 ppm/°C
- Low rheostat mode tempco,
- 35 ppm/°C
- Digital control compatible
- Ultralow power, IDD = 0.4 μA typ and 3 μA max
- See data sheet for additional features
AD5228 Specifications
| Attribute | Attribute Value |
|---|---|
| Datasheet | Datasheet |
| 3D Model | 3D Model |
| Show | |
| Product Lifecycle Status | Active |
Order guide
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- Delivery date: usually 2 to 7 working days.
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- - Carefully inspected and packed by ManyChip warehouse - Vacuum packaging - Anti-static packaging - Shockproof foam
- The terms here are for reference only, the actual terms are subject to the sales quotation. - Please confirm product specifications when ordering. - MOQ refers to the minimum order quantity required to purchase each part. - If you have special ordering instructions, please indicate them on the ordering page. - Inspection (PSI) will be performed prior to shipment.
- - Income Quality Control (IQC), 1000+ qualified dealers. - Chips are tested by authoritative organizations to ensure the quality, authenticity and safety of your device. - Decapsulation control - X-ray control - XRF inspection - Electrical testing - Surface testing -Digital components warehouse, covering an area of 800 square meters, with constant temperature and humidity
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