AD5273
PRODUCTION64-Position, One-Time-Programmable (OTP) Digital Potentiometer
- Part Models
- 3
- 1ku List Price
- Starting From $0.91
Overview
- One-time programmable (OTP)1 set-and-forget
Resistance setting—low cost alternative over EEMEM
Unlimited adjustments prior to OTP activation - 1 kΩ, 10 kΩ, 50 kΩ, 100 kΩ end-to-end terminal resistance
- Compact 8-lead SOT-23 standard package
- Ultralow power: IDD = 5 μA maximum
- Fast settling time: tS = 5 μs typical during power-up
- I2C-compatible digital interface
- See data sheet for additional information
The AD5273 is a 64-position, one-time programmable (OTP) digital potentiometer4 that employs fuse link technology to achieve permanent program setting. This device performs the same electronic adjustment function as most mechanical trimmers and variable resistors. It allows unlimited adjustments before permanently setting the resistance values. The AD5273 is programmed using a 2-wire, I2C®-compatible digital control. During write mode, a fuse blow command is executed after the final value is determined, thereby freezing the wiper position at a given setting (analogous to placing epoxy on a mechanical trimmer). When the permanent setting is achieved, the value does not change, regardless of the supply variations or environ-mental stresses under normal operating conditions. To verify the success of permanent programming, Analog Devices, Inc., patterned the OTP validation such that the fuse status can be discerned from two validation bits in the read mode.
In addition, for applications that program the AD5273 at the factory, Analog Devices offers device programming software2 running on Windows NT®, Windows® 2000, and Windows XP operating systems. This software application effectively replaces any external I2C controllers, which in turn enhances the user system’s time-to-market.
The AD5273 is available in 1 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ resistances and in a compact 8-lead SOT-23 standard package. It operates from −40°C to +105°C.
Along with its unique OTP feature, the AD5273 lends itself well to general digital potentiometer applications due to its effective resolution, array resistance options, small footprint, and low cost.
An AD5273 evaluation kit and software are available. The kit includes the connector and cable that can be converted for factory programming applications.
For applications that require dynamic adjustment of resistance settings with nonvolatile EEMEM, refer to the AD5231, AD5232, AD5233, and AD5235 family, and the AD5251, AD5252, AD5254, AD5258, and AD5259 family of nonvolatile memory digital potentiometers.
APPLICATIONS
- System calibrations
- Electronics level settings
- Mechanical potentiometers and trimmer replacement
- Transducer circuit adjustments
- Programmable filters up to 6 MHz BW3
1 OTP allows unlimited adjustments before permanent setting.
2 Analog Devices cannot guarantee the software to be 100% compatible to all systems due to the wide variation in computer configurations.
3 Applies to 1 kΩ parts only.
4 The terms digital potentiometer, VR, and RDAC are used interchangeably.
Documentation
Data Sheet 1
User Guide 1
Application Note 1
Frequently Asked Question 1
Device Drivers 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 |
|---|---|---|---|
| AD5273BRJZ1-REEL7 | 8-Lead SOT-23 | ||
| AD5273BRJZ10-R7 | 8-Lead SOT-23 | ||
| AD5273BRJZ100-R7 | 8-Lead SOT-23 |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Jul 29, 2010 - 10_0091 AD5273 One-Time Programmable Fuse Blow Condition Change - 1k Ohm and 10k Ohm models only |
||
| AD5273BRJZ1-REEL7 | PRODUCTION | |
| AD5273BRJZ10-R7 | PRODUCTION | |
|
Feb 8, 2010 - 04_0080 Qualification of the 8" C6 and Q Wafer Fab Processes at Analog Devices, Limerick, Ireland. |
||
| AD5273BRJZ1-REEL7 | PRODUCTION | |
| AD5273BRJZ10-R7 | PRODUCTION | |
| AD5273BRJZ100-R7 | PRODUCTION | |
|
Feb 4, 2010 - 10_0009 Halogen Free Material Change for SOT_23 Products |
||
| AD5273BRJZ1-REEL7 | PRODUCTION | |
| AD5273BRJZ10-R7 | PRODUCTION | |
| AD5273BRJZ100-R7 | PRODUCTION | |
|
Jun 17, 2015 - 15_0099 AD5273 Wafer Fabrication Transfer resulting in OTP Power Supply Specification Change (50K Ohm and 100K Ohm models) |
||
| AD5273BRJZ100-R7 | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Device Drivers 1
Evaluation Software 0
Evaluation Kits
AD5273 Evaluation Board