AD5122 Dual Channel, 128-Position, SPI, Nonvolatile Digital Potentiometer

The AD5122/AD5142 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 the RAW and RWB string resistors, allowing accurate resistor matching.

The high bandwidth and low total harmonic distortion (THD) ensure optimal performance for ac signals, making these devices 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 SPI-compatible digital interface that also reads back the wiper register and EEPROM contents.

The AD5122/AD5142 is 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.

Applications

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
  • Digital to Analog Converters
    IBIS Models
    Data Sheets
    Documentnote
    AD5122/AD5142: Dual Channel, 128-/256-Position, SPI, Nonvolatile Digital Potentiometer Data Sheet (Rev. B)PDF 734.91 K
    Application Notes
    Documentnote
    AN-1291: Digital Potentiometers: Frequently Asked Questions (Rev. A)PDF 805 kB
    AN-1169: Linear Gain Setting Mode: A Detailed Description (Rev. A)PDF 214 kB
    Order Information
    Part NumberPackagePacking QtyTemp RangePrice 100-499Price 1000+RoHS
    AD5122BCPZ10-RL7 Production16 ld LFCSP (3x3mm, 1.6mm exposed pad) REEL 1500-40 to 125C01.45Y
    AD5122BCPZ100-RL7 Production16 ld LFCSP (3x3mm, 1.6mm exposed pad) REEL 1500-40 to 125C01.45Y
    AD5122BRUZ10 Production16 ld TSSOPOTH 96-40 to 125C1.611.45Y
    AD5122BRUZ10-RL7 Production16 ld TSSOPREEL 1000-40 to 125C00Y
    AD5122BRUZ100 Production16 ld TSSOPOTH 96-40 to 125C1.611.45Y
    AD5122BRUZ100-RL7 Production16 ld TSSOPREEL 1000-40 to 125C00Y
    Evaluation Boards
    Part NumberDescriptionPriceRoHS
    EVAL-AD5142DBZEvaluation Board59Y
    EVAL-SDP-CS1ZEVAL-SDP-CS1Z49Y
    AD5122/AD5142: Dual Channel, 128-/256-Position, SPI, Nonvolatile Digital Potentiometer Data Sheet (Rev. B) ad5122
    AD5122/AD5142: 双通道、128/256位、SPI、非易失性数字电位计 (Rev. 0) ad5122
    AD5122/AD5142 IBIS Model ad5122
    AN-1291:数字电位计:常见问题解答 (Rev. A) ad8402
    AN-1291: Digital Potentiometers: Frequently Asked Questions (Rev. A) ad8402
    AN-1169: 线性增益设置模式:详细说明 (Rev. A) ad5121
    AN-1169: Linear Gain Setting Mode: A Detailed Description (Rev. A) ad5121