AD5220
PRODUCTIONIncrement/Decrement Digital Potentiometer
- Part Models
- 12
- 1ku List Price
- Starting From $1.51
Part Details
- 128 Position
- Potentiometer Replacement
- 10 kΩ, 50 kΩ, 100 kΩ
- Very Low Power: 40 A Max
- Increment/Decrement Count Control
- Qualified for automotive applications
The AD5220 provides a single channel, 128-position digitally controlled variable resistor (VR) device. This device performs the same electronic adjustment function as a potentiometer or variable resistor. These products were optimized for instrument and test equipment push-button applications. A choice between bandwidth or power dissipation are available as a result of the wide selection of end-to-end terminal resistance values.
The AD5220 contains a fixed resistor with a wiper contact that taps the fixed resistor value at a point determined by a digitally controlled UP/DOWN counter. The resistance between the wiper and either end point of the fixed resistor provides a con stant resistance step size that is equal to the end-to-end resistance divided by the number of positions (e.g., RSTEP = 10 kΩ / 128 = 78Ω). The variable resistor offers a true adjustable value of resistance, between the A terminal and the wiper, or the B terminal and the wiper. The fixed A-to-B terminal resistance of 10 kΩ, 50 kΩ, or 100 kΩ has a nominal temperature coefficient of 800 ppm/°C.
The chip select CS, count CLK and U/D direction control inputs set the variable resistor position. These inputs that control the internal UP/DOWN counter can be easily generated with mechanical or push button switches (or other contact closure devices). External debounce circuitry is required for the negative-edge sensitive CLK pin. This simple digital interface eliminates the need for microcontrollers in front panel interface designs.
The AD5220 is available in both surface mount (SO-8) and the 8-lead plastic DIP package. For ultracompact solutions selected models are available in the thin μSOIC package. All parts are guaranteed to operate over the extended industrial temperature range of -40°C to +85°C. For 3-wire, SPI compatible interface applications, see the AD7376 / AD8400 / AD8402 / AD8403 products.
APPLICATIONS
- Mechanical Potentiometer
- Replacement Remote
- Incremental Adjustment Applications Instrumentation: Gain, Offset Adjustment
- Programmable Voltage-to-Current Conversion
- Programmable Filters, Delays, Time Constants
- Line Impedance Matching
- Power Supply Adjustment
Documentation
Data Sheet 1
Application Note 3
Technical Articles 1
Frequently Asked Question 1
Product Selection Guide 1
Webcast 2
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 |
|---|---|---|---|
| AD5220BNZ10 | 8-Lead PDIP | ||
| AD5220BNZ100 | 8-Lead PDIP | ||
| AD5220BRMZ10 | 8-Lead MSOP | ||
| AD5220BRMZ10-REEL7 | 8-Lead MSOP | ||
| AD5220BRMZ100 | 8-Lead MSOP | ||
| AD5220BRMZ100-R7 | 8-Lead MSOP | ||
| AD5220BRZ10 | 8-Lead SOIC | ||
| AD5220BRZ10-REEL7 | 8-Lead SOIC | ||
| AD5220BRZ100 | 8-Lead SOIC | ||
| AD5220BRZ100-REEL7 | 8-Lead SOIC | ||
| AD5220BRZ50 | 8-Lead SOIC | ||
| AD5220WBRZ10-REEL7 | 8-Lead SOIC |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Feb 8, 2010 - 04_0080 Qualification of the 8" C6 and Q Wafer Fab Processes at Analog Devices, Limerick, Ireland. |
||
| AD5220BNZ10 | PRODUCTION | |
| AD5220BNZ100 | PRODUCTION | |
| AD5220BRMZ10 | PRODUCTION | |
| AD5220BRMZ10-REEL7 | PRODUCTION | |
| AD5220BRMZ100 | PRODUCTION | |
| AD5220BRMZ100-R7 | PRODUCTION | |
| AD5220BRZ10 | PRODUCTION | |
| AD5220BRZ10-REEL7 | PRODUCTION | |
| AD5220BRZ100 | PRODUCTION | |
| AD5220BRZ100-REEL7 | PRODUCTION | |
| AD5220BRZ50 | PRODUCTION | |
| AD5220WBRZ10-REEL7 | PRODUCTION | |
|
Aug 19, 2009 - 07_0024 Package Material Changes for SOT23, MiniSO, MQFP, PDIP, PLCC, SOIC (narrow and wide body), SSOP, TSSOP and TSSOP exposed pad |
||
| AD5220BNZ10 | PRODUCTION | |
| AD5220BNZ100 | PRODUCTION | |
|
May 15, 2012 - 10_0006 Halogen Free Material Change for mini SOIC Products |
||
| AD5220BRMZ10 | PRODUCTION | |
| AD5220BRMZ10-REEL7 | PRODUCTION | |
| AD5220BRMZ100 | PRODUCTION | |
| AD5220BRMZ100-R7 | PRODUCTION | |
|
Oct 23, 2009 - 09_0153 Jiangsu Changjiang Electronics Technology Co. Ltd. (JCET) and Advanced Semiconductor Engineering (ASE) as additional Assembly Subcontractors for 8L SOIC, 8L MSOP, 16L TSSOP and 8L PDIP. |
||
| AD5220BRMZ100 | PRODUCTION | |
| AD5220BRMZ100-R7 | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.