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Product Detailed Parameters
- Description：IC DGTL POT SNGL 128POS 8MSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Bulk
- Taper：-
- Configuration：-
- Number of Circuits：1
- Number of Taps：128
- Resistance (Ohms)：50k
- Interface：-
- Memory Type：Volatile
- Voltage - Supply：2.7V ~ 5.5V
- Features：-
- Tolerance：-
- Temperature Coefficient (Typ)：800ppm/°C
- Mounting Type：Surface Mount
- Supplier Device Package：8-MSOP
- Package / Case：8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Operating Temperature：-40°C ~ 85°C
- Resistance - Wiper (Ohms) (Typ)：-
- Grade：-
- Qualification：-
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Overview
The AD5220BRM50-REEL7 is a single-channel, 128-position digital potentiometer from Analog Devices. It features a nominal resistance of 50 kΩ with a tolerance of ±30% and a temperature coefficient of 800 ppm/°C. The device operates on a single supply voltage ranging from 2.7 V to 5.5 V, drawing a typical supply current of 15 µA. It utilizes a three-wire serial interface (SPI-compatible) consisting of CLK, CS, and U/D pins for control. The component is housed in an 8-lead Mini Small Outline Package (MSOP).
Feature Summary
- 128-position resolution with 7-bit control via UP/DOWN counter.
- Three-wire serial interface compatible with standard SPI protocols.
- Single-supply operation from 2.7 V to 5.5 V.
- Power-on centered wiper position.
Applications
- Mechanical potentiometer replacement in compact designs.
- Programmable gain amplifiers and offset adjustment circuits.
- Programmable filters and time constant adjustments.
- Line impedance matching applications.
Procurement Notes
Verify the specific ordering suffix REEL7 confirms tape-and-reel packaging. Confirm RoHS compliance status as indicated by the 'Z' suffix in the base model AD5220BRMZ50, though the provided part number lacks this indicator. Check for automotive qualification if required, noting that AD5220W models are distinct from commercial variants.
Selection Notes
Select this component when a single-channel variable resistor with 128 steps is needed. The 50 kΩ value suits moderate impedance applications. Ensure the design supports the 3-wire serial interface timing requirements. Consider the 800 ppm/°C temperature coefficient for precision applications; lower drift versions may require different series or potentiometer divider mode usage.
Part Context
This part belongs to the AD5220 family of programmable resistors. It shares the same core architecture and interface as other resistance variants (10 kΩ, 100 kΩ) within the series. The BRM designation indicates the SOIC_N or MSOP package type depending on the specific sub-series, while the 50 suffix defines the end-to-end resistance value.
Replacement Considerations
Direct pin-compatible replacements include other AD5220 variants with different resistance values (e.g., AD5220BRM10, AD5220BRM100). For dual-channel requirements, consider the AD5222 series. Verify interface compatibility if substituting with devices using different serial protocols.
