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AD5270:  Single Channel, 1% Resistor tolerance, 1024-Position Digital Variable Resistor

The AD5270/AD5271 are single-channel, 1024/256-positions digitally controlled resistors1 with less than 1% end-to-end Resistor Tolerance error and 50-Time Programmable Memory. The AD5270/AD5271 perform the same electronic adjustment function as a mechanical rheostat with enhanced resolution, solid state reliability, and superior low temperature coefficient performance.

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AD5270:  Single Channel, 1% Resistor tolerance, 1024-Position Digital Variable Resistor

製品概要

The AD5270/AD5271 are single-channel, 1024/256-positions digitally controlled resistors1 with less than 1% end-to-end Resistor Tolerance error and 50-Time Programmable Memory. The AD5270/AD5271 perform the same electronic adjustment function as a mechanical rheostat with enhanced resolution, solid state reliability, and superior low temperature coefficient performance.

The AD5270/AD5271 offer guaranteed industry leading low resistor tolerance errors of ±1% with a nominal temperature coefficient of 35 ppm/ºC. The low resistor tolerance feature simplifies open-loop applications as well as precision calibration and tolerance matching applications.

The AD5270/AD5271 device wiper settings are controllable through the SPI compatible digital interface. Unlimited adjustments are allowed before programming the resistance value into the 50-TP (Fifty Time Programmable) memory. The AD5270/AD5271 do not require any external voltage supply to facilitate fuse blow and there are 50 opportunities for permanent programming. During 50-TP activation, a permanent blow fuse command freezes the wiper position (analogous to placing epoxy on a mechanical trimmer).

The AD5270 and AD5271 are available in a thin 3mmX3mm LFCSP package and in a compact 10ld MSOP package. The parts are guaranteed to operate over the extended industrial temperature range of −40°C to +105°C.

1The terms programmable resistor and RDAC are used interchangeably.

Applications

  • Mechanical potentiometer replacement
  • Instrumentation: gain, offset adjustment
  • Programmable voltage to current conversion
  • Programmable filters, delays, time constants
  • Programmable power supply
  • Sensor calibration

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  • Single-channel, 1,024/256-position resolution
  • 20 kΩ, 50 kΩ and 100 kΩ nominal resistance
  • Calibrated 1% Nominal Resistor Tolerance
  • Multiple-time programmable set-and-forget resistance setting allows 50 time permanent programming
  • Rheostat mode temperature coefficient: 35 ppm/°C
  • 2.7V to 5.5V single-supply operation
  • ±2.5V to ±2.75V dual-supply operation for AC or Bipolar Operations
  • See data sheet for additional features.

Functional Block Diagram for AD5270

Of Note ...

This product is not yet released to manufacturing. Please contact the Digital Potentiometers Development Group for sample availability and additional technical information.
For I2C interface, see the AD5272/AD5274.

類似製品

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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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* The pricing listed here is provided only for budgetary purposes as recommended list price in U.S. Dollars in the United States ex factor per unit for the stated volume. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
** Pricing is currently unavailable. Click on the product number to see the Product Page for additional information.