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Product Detailed Parameters
- Description：IC DGTL POT 100KOHM 16LFCSP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Taper：Linear
- Configuration：Potentiometer
- Number of Circuits：1
- Number of Taps：128
- Resistance (Ohms)：100k
- Interface：I2C, SPI
- Memory Type：Non-Volatile
- Voltage - Supply：2.3V ~ 5.5V, ±2.25V ~ 2.75V
- Features：Selectable Address
- 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)：130
- Grade：-
- Qualification：-
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Overview
The AD5121BCPZ100-RL7 is a single-channel, nonvolatile digital potentiometer featuring 128 adjustment positions. It offers 10 kΩ and 100 kΩ resistance options with an 8% maximum tolerance and a low temperature coefficient of 35 ppm/°C. The device supports both SPI and I2C interfaces via the DIS pin and operates on single or dual supplies ranging from 2.3 V to 5.5 V (or ±2.25 V to ±2.75 V). Key electrical characteristics include a 3 MHz bandwidth for the 10 kΩ variant, ±6 mA wiper current capability, and fast start-up time under 75 µs. It is housed in a compact 16-lead, 3 mm × 3 mm LFCSP package.
Feature Summary
- Nonvolatile memory retains settings across power cycles with 50-year data retention.
- Dual interface support: Selectable between SPI and I2C using the DIS pin.
- High bandwidth up to 3 MHz and low total harmonic distortion suitable for AC signals.
- Linear gain setting mode allows independent programming of string resistors.
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 resistance value suffix (e.g., 100 for 100 kΩ) against design requirements. Confirm the DIS pin configuration matches the target system's communication protocol (SPI or I2C). Ensure supply voltages remain within the specified 2.3 V to 5.5 V range for proper operation.
Selection Notes
Select this component for applications requiring precise, software-adjustable resistance without mechanical wear. The 100 kΩ version provides lower current handling (±1.5 mA) compared to the 10 kΩ version (±6 mA); choose based on load requirements. The LFCSP package is suitable for space-constrained PCB layouts.
Part Context
This part belongs to the AD512x/AD514x family of nonvolatile digital potentiometers. The AD5121 is the single-channel, 128-position variant, while the AD5141 offers 256 positions. Other family members include dual (AD5122/AD5142) and quad (AD5123/AD5124/AD5143/AD5144) channel configurations.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Designers should verify pin compatibility and electrical specifications if considering alternative manufacturers' digital potentiometers.
