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Product Detailed Parameters
- Description：IC DGTL POT SNGL 128POS 8-DIP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Taper：-
- Configuration：-
- Number of Circuits：1
- Number of Taps：128
- Resistance (Ohms)：100k
- Interface：-
- Memory Type：Volatile
- Voltage - Supply：2.7V ~ 5.5V
- Features：-
- Tolerance：-
- Temperature Coefficient (Typ)：800ppm/°C
- Mounting Type：Through Hole
- Supplier Device Package：8-PDIP
- Package / Case：8-DIP (0.300", 7.62mm)
- Operating Temperature：-40°C ~ 85°C
- Resistance - Wiper (Ohms) (Typ)：-
- Grade：-
- Qualification：-
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Overview
The AD5220BN100 is a single-channel, 128-position digitally controlled variable resistor with a nominal resistance of 100 kΩ. It operates on a single supply voltage ranging from 2.7 V to 5.5 V and features a three-wire serial interface consisting of Clock (CLK), Chip Select (CS), and Up/Down (U/D) inputs. The device utilizes volatile memory, resetting the wiper to the center position upon power-up. It supports both rheostat and potentiometer divider modes, offering a resolution of 7 bits. The component is housed in an 8-lead Plastic Dual In-Line Package (PDIP) and is rated for operation within a temperature range of -40°C to +85°C.
Feature Summary
- 128-position digital control with 7-bit resolution
- Nominal resistance options including 100 kΩ
- Three-wire serial interface (CLK, CS, U/D)
- Single supply operation from 2.7 V to 5.5 V
Applications
- Programmable gain amplifiers
- Voltage reference adjustment
- Digital potentiometer replacement in rheostat configurations
Procurement Notes
Verify the specific suffix 'BNZ' confirms RoHS compliance and the PDIP package type. Confirm the '100' designation indicates the 100 kΩ resistance value. Check current availability status as distribution channels may list obsolete or discontinued stock for this component family.
Selection Notes
Select this model when a high-resistance variable resistor (100 kΩ) is required. Ensure the application can tolerate volatile memory behavior, as settings are lost upon power loss. Verify that the 128-step resolution meets the precision requirements, as higher resolution models exist within the same family.
Part Context
This component belongs to the AD5220 family of single-channel digital potentiometers. The 'B' indicates the SOIC/PDIP body style, 'N' denotes the PDIP package option, 'Z' signifies RoHS compliance, and '100' specifies the 100 kΩ end-to-end resistance. Other variants include 10 kΩ and 50 kΩ versions.
Replacement Considerations
Direct pin-compatible replacements within the same package include AD5220BNZ10 (10 kΩ) and AD5220BNZ50 (50 kΩ). Surface mount equivalents such as AD5220BRZ100 are available in SOIC packages but require footprint adaptation.
