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Product Detailed Parameters
- Description：IC DGTL POT 10KOHM 16LFCSP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR)
- Taper：Linear
- Configuration：Potentiometer
- Number of Circuits：2
- Number of Taps：128
- Resistance (Ohms)：10k
- Interface：SPI
- Memory Type：Non-Volatile
- Voltage - Supply：2.3V ~ 5.5V, ±2.25V ~ 2.75V
- Features：Cascade Pin
- Tolerance：±8%
- Temperature Coefficient (Typ)：35ppm/°C
- Mounting Type：Surface Mount
- Supplier Device Package：16-LFCSP (3x3)
- Package / Case：16-WFQFN Exposed Pad, CSP
- Operating Temperature：-40°C ~ 125°C
- Resistance - Wiper (Ohms) (Typ)：55
- Grade：-
- Qualification：-
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Overview
The AD5122WBCPZ10-RL7 is a dual-channel, 128-position digital potentiometer from Analog Devices. It features a 10 kΩ nominal resistance with ±8% tolerance and a 35 ppm/°C temperature coefficient. The device supports SPI interface control and includes nonvolatile EEPROM memory to retain wiper settings across power cycles. Operating on a single supply of 2.3 V to 5.5 V or a dual supply of ±2.25 V to ±2.75 V, it offers a 3 MHz bandwidth and ±6 mA wiper current capability. Packaged in a compact 16-lead LFCSP (3 mm × 3 mm), it operates within an extended industrial temperature range of −40°C to +125°C.
Feature Summary
- Dual-channel architecture with 128 tap positions and nonvolatile EEPROM storage
- SPI-compatible serial interface for independent programming and readback
- Linear gain setting mode via INDEP pin for precise resistor matching
- Wide bandwidth (3 MHz) and low total harmonic distortion (-80 dB)
Applications
- Portable electronics level adjustment
- LCD panel brightness and contrast controls
- Programmable filters, delays, and time constants
- Programmable power supplies
Procurement Notes
Verify the specific suffix 'WB' against official documentation to confirm automotive qualification status and exact package variant. Ensure logic supply voltage requirements are met for the SPI interface. Confirm thermal management strategies for the LFCSP package under maximum load conditions.
Selection Notes
Select this model for applications requiring dual-channel adjustment with persistent settings. The 10 kΩ resistance value suits moderate impedance circuits. Consider the AD5142 variant if 256-position resolution is required instead of 128 taps.
Part Context
This component belongs to the AD5122/AD5142 family of digital potentiometers. The AD5122 specifically denotes the dual-channel, 128-position variant. The 'W' suffix typically indicates automotive-grade qualification (AEC-Q100), while 'B' specifies the 10 kΩ resistance option.
Replacement Considerations
The AD5122ABCPZ10-RL7 serves as a functional substitute but utilizes an I2C interface instead of SPI. Verify interface compatibility before substitution.
FAQ
What is the maximum continuous current allowed through the wiper?
The maximum continuous current is ±6 mA for the 10 kΩ version.
How does the INDEP pin function?
The INDEP pin enables linear gain setting mode at power-up, loading each string resistor independently from its associated memory location.
What is the data retention period for the EEPROM?
The data retention is guaranteed for 50 years based on JEDEC standards.
