Features and Benefits
- 10 kΩ and 100 kΩ resistance options
- Resistor tolerance: 8% maximum
- Wiper current: ±6 mA
- Low temperature coefficient: 35 ppm/°C
- Wide bandwidth: 3 MHz
- Fast start-up time < 75 μs
- Linear gain setting mode
- Single- and dual-supply operation
- Independent logic supply: 1.8 V to 5.5 V
- Wide operating temperature: −40°C to +125°C
- 3 mm × 3 mm package option
- Qualified for automotive applications
The AD5122A/AD5142A potentiometers provide a nonvolatile solution for 128-/256-position adjustment applications, offering guaranteed low resistor tolerance errors of ±8% and up to ±6 mA current density in the Ax, Bx, and Wx pins.
The low resistor tolerance and low nominal temperature coefficient simplify open-loop applications as well as applications requiring tolerance matching.
The linear gain setting mode allows independent programming of the resistance between the digital potentiometer terminals, through RAW and RWB the string resistors, allowing very accurate resistor matching.
The high bandwidth and low total harmonic distortion (THD) ensure optimal performance for ac signals, making it suitable for filter design.
The low wiper resistance of only 40 Ω at the ends of the resistor array allows for pin-to-pin connection.
The wiper values can be set through an I2C-compatible digital interface that is also used to read back the wiper register and EEPROM contents.
The AD5122A/AD5142A are available in a compact, 16-lead, 3 mm × 3 mm LFCSP and a 16-lead TSSOP. The parts are guaranteed to operate over the extended industrial temperature range of −40°C to +125°C.
- Portable electronics level adjustment
- LCD panel brightness and contrast controls
- Programmable filters, delays, time constants
- Programmable power supplies
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)
The AD5142A allows multiple modes of operation, including read/write access in the RDAC and EEMEM registers, increment/decrement of resistance, resistance changes in ±6 dB scales, wiper setting readback, and extra EEMEM for storing user-defined information, such as memory data for other components or a lookup table.
The AD5142A supports a dual-supply ±2.25 V to ±2.75 V operation and a single-supply 2.3 V to 5.5 V operation, making the device suitable for battery-powered applications and many other applications. In addition, the AD5142A uses a versatile I2C-compatible serial interface that operates in fast mode, allowing speeds of up to 400 kbps and supporting the selection of up to nine different I2C addresses. The EVAL-AD5142DBZ can operate in single-supply or dual-supply mode and incorporates an internal power supply from the USB.
Complete specifications for the AD5142A can be found in the AD5122A / AD5142A datasheet.
Documentation & Resources
Tools & Simulations
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|
|AD5142ABCPZ10-RL7||Material Declaration||Reliability Data||16-Lead LFCSP (3mm x 3mm w/ EP)|
|AD5142ABCPZ100-RL7||Material Declaration||Reliability Data||16-Lead LFCSP (3mm x 3mm w/ EP)|
|AD5142ABRUZ10||Material Declaration||Reliability Data||16-Lead TSSOP|
|AD5142ABRUZ10-RL7||Material Declaration||Reliability Data||16-Lead TSSOP|
|AD5142ABRUZ100||Material Declaration||Reliability Data||16-Lead TSSOP|
|AD5142ABRUZ100-RL7||Material Declaration||Reliability Data||16-Lead TSSOP|
|AD5142AWBCPZ10-RL7||Material Declaration||Reliability Data||16-Lead LFCSP (3mm x 3mm w/ EP)|
|Wafer Fabrication Data|
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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.