AD5262
+15 V or ±5 V, Dual-Channel, SPI Compatible, 256 Position Digital Potentiometer
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Overview
Features and Benefits
- 256 positions
- AD5260: 1 channel
- AD5262: 2 channels (independently programmable)
- Potentiometer replacement 20 kΩ, 50 kΩ, 200 kΩ
- Low temperature coefficient: 35 ppm/°C
- 4-wire, SPI-compatible serial data input
- 5 V to 15 V single-supply; ±5.5 V dual-supply operation
- Power on midscale preset
Product Details
The AD5260 / AD5262 provide a single- or dual-channel, 256- position, digitally controlled variable resistor (VR) device.1 These devices perform the same electronic adjustment function as a potentiometer or variable resistor. Each channel of the AD5260/AD5262 contains a fixed resistor with a wiper contact that taps the fixed resistor value at a point determined by a digital code loaded into the SPI-compatible serial-input register. The resistance between the wiper and either end point of the fixed resistor varies linearly with respect to the digital code transferred into the VR latch. The variable resistor offers a completely programmable 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 20 Ω, 50 Ω, or 200 Ω has a nominal temperature coefficient of 35 ppm/°C. Unlike the majority of the digital potentiometers in the market, these devices can operate up to 15 V or ±5 V provided proper supply voltages are furnished.
Each VR has its own VR latch that holds its programmed resistance value. These VR latches are updated from an internal serial-to-parallel shift register, which is loaded from a standard 3-wire serial-input digital interface. The AD5260 contains an 8-bit serial register whereas the AD5262 contains a 9-bit serial register. Each bit is clocked into the register on the positive edge of the CLK pin. The AD5262 address bit determines the corresponding VR latch to be loaded with the last eight bits of the data word during the positive edging of CS strobe. A serial data output pin at the opposite end of the serial register enables simple daisy-chaining in multiple VR applications without additional external decoding logic. An optional reset pin (PR) forces the wiper to the midscale position by loading 0x80 into the VR latch.
The AD5260 / AD5262 are available in thin surface-mount 14-lead TSSOP and 16-lead TSSOP packages. All parts are guaranteed to operate over the extended industrial temperature range of −40°C to +85°C.
APPLICATIONS
- Mechanical potentiometer replacement
- Instrumentation: gain, offset adjustment
- Stereo channel audio level control
- Programmable voltage-to-current conversion
- Programmable filters, delays, time constants
- Line impedance matching
- Low resolution DAC replacement
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Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (1)
Documentation & Resources
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FAQs7/26/2017
Software & Systems Requirements
Device Drivers
Design Resources
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 Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
|---|---|---|---|---|
| AD5262BRUZ20 | Material Declaration | Reliability Data | 16-Lead TSSOP | |
| AD5262BRUZ20-RL7 | Material Declaration | Reliability Data | 16-Lead TSSOP | |
| AD5262BRUZ200 | Material Declaration | Reliability Data | 16-Lead TSSOP | |
| AD5262BRUZ200-RL7 | Material Declaration | Reliability Data | 16-Lead TSSOP | |
| AD5262BRUZ50 | Material Declaration | Reliability Data | 16-Lead TSSOP | |
| AD5262BRUZ50-RL7 | Material Declaration | Reliability Data | 16-Lead TSSOP | |
| Wafer Fabrication Data |
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