Data Acquisition - Digital Potentiometers
Data Acquisition - Digital Potentiometers
Definition:
Digital Potentiometers, often referred to as "digipots," are integrated circuits (ICs) designed to emulate the functionality of traditional mechanical potentiometers but with digital control. These devices provide variable resistance through electronic signals, enabling precise adjustment of voltage division, current control, or signal attenuation in a circuit. As a key component in data acquisition systems, digital potentiometers offer enhanced accuracy, programmability, and reliability compared to their analog counterparts.
Types of Digital Potentiometers:
1. Volatile vs. Non-Volatile:
- Volatile Digipots lose their settings when power is removed, suitable for dynamic applications requiring frequent adjustments.
- Non-Volatile Digipots retain settings after power-off, ideal for preset configurations or memory-critical systems.
Interface Types:
- I2C/SPI-Compatible: Enable serial communication for microcontroller-based designs.
- Up/Down Interface: Simple pulse-controlled adjustment for basic applications.
Resolution & Channels:
- Ranging from 6-bit to 10-bit resolution for fine-tuning precision.
- Single, dual, or quad-channel options to support multi-circuit control.
Purchasing Recommendations:
- Match Resolution to Application: Higher bit counts (e.g., 10-bit) are critical for sensitive analog signal processing, while 6-8 bits suffice for general-purpose use.
- Consider Endurance: For frequently adjusted systems, select digipots with high write-cycle ratings (e.g., >50,000 cycles).
- Verify Voltage Compatibility: Ensure the IC s operating voltage range aligns with your circuit s requirements (e.g., 3.3V, 5V, or 15V).
- Package Size: SMD packages (e.g., TSSOP, QFN) save space in compact designs, while DIP options simplify prototyping.
Digital potentiometers bridge analog flexibility with digital precision, making them indispensable for audio equipment, sensor calibration, and automated test systems. Evaluate technical specs against your design s needs to optimize performance and cost-efficiency.
Filter and sort
Categories
MCP4552T-502E/MF
IC DGT POT 5KOHM 257TAP 8DFN
DS1802E+T&R
IC DGTL POT 45KOHM 65TAP 20TSSOP
MCP4331T-503E/ML
IC DGTL POT 50KOHM 129TAP 20QFN
MAX5475EKA+T
IC DGT POT 100KOHM 32TAP SOT23-8
MCP42050T-I/SL
IC DGTL POT 50KOHM 256TAP 14SOIC
MAX5395NATA+T
IC DGTL POT 100KOHM 256TAP 8TDFN
MAX5482ETE+
IC DGT POT 50KOHM 1024TAP 16TQFN
AD5116BCPZ10-RL7
IC DGTL POT 10KOHM 64TAP 8LFCSP
MCP4241-104E/P
IC DGT POT 100KOHM 129TAP 14DIP
MCP4542T-503E/MF
IC DGT POT 50KOHM 129TAP 8DFN
MCP42010T-E/SL
IC DGTL POT 10KOHM 256TAP 14SOIC
AD5292BRUZ-20-RL7
IC DGT POT 20KOHM 1024TP 14TSSOP
MCP4661-104E/ST
IC DGT POT 100KOHM 257TP 14TSSOP
MCP4431T-103E/ML
IC DGTL POT 10KOHM 129TAP 20QFN
AD5203AN100
IC DGTL POT QUAD 64POS 24-DIP
AD5172BRM2.5
IC DGT POT 2.5KOHM 256TAP 10MSOP
AD5142WBRUZ10-RL7
IC DGT POT 10KOHM 256TAP 16TSSOP
MCP4142T-103E/MS
IC DGTL POT 10KOHM 129TAP 8MSOP
MCP4132T-103E/MF
IC DGT POT 10KOHM 129TAP 8DFN
ISL90460UIE527
DIGIPOT, 50000OHM, 32 PSTN