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Product Detailed Parameters
- Description：IC DGT POT 100KOHM 256TAP 24SOIC
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Taper：Linear
- Configuration：Potentiometer
- Number of Circuits：4
- Number of Taps：256
- Resistance (Ohms)：100k
- Interface：SPI
- Memory Type：Volatile
- Voltage - Supply：2.7V ~ 5.5V
- Features：Cascade Pin
- Tolerance：±30%
- Temperature Coefficient (Typ)：500ppm/°C
- Mounting Type：Surface Mount
- Supplier Device Package：24-SOIC
- Package / Case：24-SOIC (0.295", 7.50mm Width)
- Operating Temperature：-40°C ~ 125°C
- Resistance - Wiper (Ohms) (Typ)：200
- Grade：-
- Qualification：-
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Overview
The AD8403ARZ100-REEL is a quad-channel, 256-position digital potentiometer from Analog Devices. It features four independent variable resistors with a nominal end-to-end resistance of 100 kΩ and a linear taper. The device operates on a single supply voltage ranging from 2.7 V to 5.5 V and utilizes a 3-wire SPI-compatible serial interface for data input. Each channel provides 8-bit resolution, allowing precise digital control over resistance values. The component is housed in a 24-lead SOIC package and is designed for industrial temperature ranges.
Feature Summary
- Quad-channel configuration with four independent 100 kΩ variable resistors
- 256-position (8-bit) resolution with linear taper
- SPI-compatible 3-wire serial interface supporting up to 10 MHz clock rates
- Power shutdown mode with current consumption less than 5 μA
Applications
- Mechanical potentiometer replacement
- Programmable filters, delays, and time constants
- Line impedance matching
Procurement Notes
Verify the specific suffix 'REEL' indicates tape and reel packaging when sourcing. Confirm the '100' designation corresponds to the 100 kΩ resistance variant. Ensure compatibility with the 24-lead SOIC footprint during procurement planning.
Selection Notes
Select this model for applications requiring four independent high-resistance channels. The 100 kΩ value results in a -3 dB bandwidth of approximately 71 kHz. Consider the 10 kΩ version if higher bandwidth or lower wiper resistance is required for the application.
Part Context
This part belongs to the AD8403 family of quad-channel digital potentiometers. It shares functional similarities with the AD8400 (single channel) and AD8402 (dual channel), differing primarily in channel count and package pinout. The ARZ suffix denotes the automotive-grade qualification and RoHS compliance within the standard SOIC package.
Replacement Considerations
Direct replacements include other AD8403 variants with different resistance values, such as AD8403ARZ10 (10 kΩ) or AD8403ARZ50 (50 kΩ). Ensure the substitute maintains the same 24-lead SOIC package and SPI interface compatibility.
