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AD5273:  64-Position, One-Time-Programmable (OTP) Digital Potentiometer

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, ...More

AD5273:  64-Position, One-Time-Programmable (OTP) Digital Potentiometer

Product Description

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.p>

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, users should refer to the AD523x and AD525x families of nonvolatile memory digital potentiometers.

Applications

  • System calibrations
  • Electronics level settings
  • Mechanical potentiometers and trimmer replacement
  • Automotive electronics adjustments
  • 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.

    Data Sheet, Rev. G, 7/08

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    • 64 positions
    • 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
    • # Channels: 1
    • # Positions: 64
    • Memory Type: One Time Programmable
    • Interface: I2C
    • Resistor Values (kOhms): 1, 10, 50, 100
    • Voltage Range (V): +5.5V
    • Supply Current : 0.1µA
    • Temp. Range -40 °C to..: 105Deg
    • Absolute Tempco (ppm/°C): 300ppm/C
    • Package: SOT-23

    Functional Block Diagram for AD5273

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    Part# # Channels # Positions Memory Type Interface Resistor Values (kOhms) Bipolar Voltage Range (V) Voltage Range (V) Supply Current Temp. Range -40 °C to.. Absolute Tempco (ppm/°C) Price* (1000-4999)
    AD5291 1 256 Non-Volatile SPI 20 ±16.5 +33 2µA 105 35 $2.29
    AD5292 1 1,024 Non-Volatile SPI 20 ±16.5 +33 2µA 105 35 $2.62
    AD5293 1 1,024 Volatile SPI 20 ±16.5 +33 0.2µA 105 5 $2.55
    ADN2860 3 512 Non-Volatile I2C 25, 250 ±2.75 - 10µA 85 15 $5.97
    AD5228 1 32 Volatile Pushbutton 10, 50, 100 - +5.5 0.4µA 105 35 $0.34
    AD5201 1 33 Volatile SPI 10, 50 ±3 +5.5 15µA 85 500 $0.50
    AD5227 1 64 Volatile Up/Down 10, 50, 100 - +5.5 0.4µA 105 35 $0.36
    AD5246 1 128 Volatile I2C 5, 10, 50, 100 - +5.5 3µA 125 35 $0.45
    AD5247 1 128 Volatile I2C 5, 10, 50, 100 - +5.5 3µA 125 35 $0.45
    AD5220 1 128 Volatile Up/Down 10, 50, 100 - +5.5 15µA 85 800 $0.90
    AD7376 1 128 Volatile SPI 10, 50, 100, 1M ±15 +28 10µA 85 35 $2.86
    AD5160 1 256 Volatile SPI 5, 10, 50, 100 - +5.5 3µA 125 35 $0.64
    AD5165 1 256 Volatile SPI 100 - +5.5 0.05µA 125 35 $0.58
    AD5245 1 256 Volatile I2C 5, 10, 50, 100 - +5.5 3µA 125 35 $0.64
    AD5161 1 256 Volatile I2C, SPI 5, 10, 50, 100 - +5.5 3µA 125 35 $0.65
    AD5241 1 256 Volatile I2C 10, 100, 1M ±3 +5.5 0.1µA 105 30 $0.93
    AD5200 1 256 Volatile SPI 10, 50 ±3 +5.5 15µA 85 500 $0.89
    AD8400 1 256 Volatile SPI 1, 10, 50, 100 - +5.5 0.01µA 125 500 $1.13
    AD5260 1 256 Volatile SPI 20, 50, 200 ±5 +15 0.1µA 85 35 $1.80
    AD5280 1 256 Volatile I2C 20, 50, 200 ±5 +15 0.1µA 85 35 $1.80
    AD5290 1 256 Volatile SPI 10, 50, 100 ±15 +30 10µA 105 35 $1.97
    AD5222 2 128 Volatile Up/Down 10, 50, 100, 1M ±3 +5.5 15µA 85 35 $0.80
    AD5243 2 256 Volatile I2C 2.5, 10, 50, 100 - +5.5 3.5µA 125 35 $1.00
    AD5162 2 256 Volatile SPI 2.5, 10, 50, 100 - +5.5 3.5µA 125 35 $1.00
    AD5248 2 256 Volatile I2C 2.5, 10, 50, 100 - +5.5 3.5µA 125 35 $1.00
    AD5207 2 256 Volatile SPI 10, 50, 100 ±3 +5.5 40µA 125 500 $1.06
    AD8402 2 256 Volatile SPI 1, 10, 50, 100 - +5.5 0.01µA 125 500 $1.68
    AD5242 2 256 Volatile I2C 10, 100, 1M ±3 +5.5 0.1µA 105 30 $1.27
    AD5262 2 256 Volatile SPI 20, 50, 200 ±5 +15 0.1µA 85 35 $1.97
    AD5282 2 256 Volatile I2C 20, 50, 200 ±5 +15 0.1µA 85 35 $1.97
    AD5203 4 64 Volatile SPI 10, 100 - +5.5 0.01µA 85 700 $1.47
    AD5204 4 256 Volatile SPI 10, 50, 100 ±3 +5.5 12µA 85 700 $1.52
    AD8403 4 256 Volatile SPI 1, 10, 50, 100 - +5.5 0.01µA 125 500 $2.79
    AD5263 4 256 Volatile I2C, SPI 20, 50, 200 ±5 +15 1µA 125 30 $2.58
    AD5206 6 256 Volatile SPI 10, 50, 100 ±3 +5.5 12µA 85 700 $1.94
    AD5273 1 64 One Time Programmable I2C 1, 10, 50, 100 - +5.5 0.1µA 105 300 $0.69
    AD5171 1 64 One Time Programmable I2C 5, 10, 50, 100 - +5.5 4µA 125 35 $0.72
    AD5170 1 256 One Time Programmable I2C 2.5, 10, 50, 100 - +5.5 3.5µA 125 35 $1.00
    AD5172 2 256 One Time Programmable I2C 2.5, 10, 50, 100 - +5.5 3.5µA 125 35 $1.32
    AD5173 2 256 One Time Programmable I2C 2.5, 10, 50, 100 - +5.5 3.5µA 125 35 $1.32
    AD5258 1 64 Non-Volatile I2C 1, 10, 50, 100 - +5.5 4µA 85 300 $0.59
    AD5259 1 256 Non-Volatile I2C 5, 10, 50, 100 n/a +5.5 3µA 85 300 $0.90
    AD5231 1 1,024 Non-Volatile SPI 10, 50, 100 ±3 +5.5 2.7µA 85 600 $1.97
    AD5251 2 64 Non-Volatile I2C 1, 10, 50, 100 ±3 +5.5 3µA 85 600 $1.97
    AD5252 2 256 Non-Volatile I2C 1, 10, 50, 100 ±3 +5.5 3µA 85 300 $1.61
    AD5232 2 256 Non-Volatile SPI 10, 50, 100 ±3 +5.5 3.5µA 85 300 $2.40
    AD5235 2 1,024 Non-Volatile SPI 25, 250 ±3 +5.5 3.5µA 85 35 $3.52
    ADN2850 2 1,024 Non-Volatile SPI 25, 250 ±3 +5.5 3.5µA 85 35 $3.52
    AD5255 3 512 Non-Volatile I2C 25, 250 ±3 +5.5 3.5µA 85 35 $5.15
    AD5233 4 64 Non-Volatile SPI 10, 50, 100 ±3 +5.5 3.5µA 85 600 $2.50
    AD5253 4 64 Non-Volatile I2C 1, 10, 50, 100 ±3 +5.5 3µA 85 300 $2.49
    AD5254 4 256 Non-Volatile I2C 1, 10, 50, 100 ±3 +5.5 3µA 85 300 $2.58
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    • Automotive: -40 to +125 degrees Celsius
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    *The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
    **Sample availability may be better than production availability. Please enter samples into your cart to check sample availability.