Data Acquisition - Digital Potentiometers

Category Introduction

Digital potentiometers are a family of integrated circuit devices which provide an adjustable resistance similar to a traditional mechanical potentiometer or rheostat, but which are controlled by means of electronic signals rather than a mechanical input. Though relatively limited in the amount of electrical power that can be dissipated in their resistance, their ability to be electronically controlled facilitates miniaturization, automation, and remote control of signal-level analog circuits where mechanical potentiometers may have otherwise been used.

Product List

510 Items

Mfr Part #	Quantity Available	UnitPrice	Packaging	Product Status	Taper	Configuration	Number of Circuits	Number of Taps	Resistance (Ohms)	Interface	Memory Type	Voltage - Supply	Features	Tolerance	Temperature Coefficient (Typ)	Mounting Type	Supplier Device Package	Package / Case	Operating Temperature	Resistance - Wiper (Ohms) (Typ)
AD5160BRJZ10-RL7 IC DGT POT 10KOHM 256TAP SOT23-8 Analog Devices Inc.	326	$2.23	Tape & Reel (TR)	Active	Linear	Potentiometer	1	256	10k	SPI	Volatile	2.7V ~ 5.5V	-	±15%	45ppm/°C	Surface Mount	SOT-23-8	SOT-23-8	-40°C ~ 125°C	50
AD5245BRJZ5-RL7 IC DGTL POT 5KOHM 256TAP SOT23-8 Analog Devices Inc.	370	$2.25	Tape & Reel (TR)	Active	Linear	Potentiometer	1	256	5k	I²C	Volatile	2.7V ~ 5.5V	Selectable Address	±30%	45ppm/°C	Surface Mount	SOT-23-8	SOT-23-8	-40°C ~ 125°C	50
AD5165BUJZ100-R7 IC DGT POT 100KOHM 256TAP TSOT23 Analog Devices Inc.	194	$2.45	Tape & Reel (TR)	Active	Linear	Potentiometer	1	256	100k	SPI	Volatile	2.7V ~ 5.5V	-	±20%	35ppm/°C	Surface Mount	TSOT-23-8	SOT-23-8 Thin, TSOT-23-8	-40°C ~ 125°C	160
AD5243BRMZ2.5-RL7 IC DGT POT 2.5KOHM 256TAP 10MSOP Analog Devices Inc.	33	$3.16	Tape & Reel (TR)	Active	Linear	Potentiometer	2	256	2.5k	I²C	Volatile	2.7V ~ 5.5V	-	-20%, +55%	35ppm/°C	Surface Mount	10-MSOP	10-TFSOP, 10-MSOP (0.118", 3.00mm Width)	-40°C ~ 125°C	160
AD5207BRUZ50-RL7 IC DGT POT 50KOHM 256TAP 14TSSOP Analog Devices Inc.	161	$3.48	Tape & Reel (TR)	Active	Linear	Potentiometer	2	256	50k	SPI	Volatile	2.7V ~ 5.5V, ±2.2V ~ 2.7V	Cascade Pin	±30%	500ppm/°C	Surface Mount	14-TSSOP	14-TSSOP (0.173", 4.40mm Width)	-40°C ~ 125°C	50
AD5207BRUZ10-RL7 IC DGT POT 10KOHM 256TAP 14TSSOP Analog Devices Inc.	190	$3.50	Tape & Reel (TR)	Active	Linear	Potentiometer	2	256	10k	SPI	Volatile	2.7V ~ 5.5V, ±2.2V ~ 2.7V	Cascade Pin	±30%	500ppm/°C	Surface Mount	14-TSSOP	14-TSSOP (0.173", 4.40mm Width)	-40°C ~ 125°C	50
AD5245BRJZ10-R2 IC DGT POT 10KOHM 256TAP SOT23-8 Analog Devices Inc.	172	$2.97	Tape & Reel (TR)	Active	Linear	Potentiometer	1	256	10k	I²C	Volatile	2.7V ~ 5.5V	Selectable Address	±30%	45ppm/°C	Surface Mount	SOT-23-8	SOT-23-8	-40°C ~ 125°C	50
AD8400ARZ10-REEL IC DGTL POT 10KOHM 256TAP 8SOIC Analog Devices Inc.	185	$4.01	Tape & Reel (TR)	Active	Linear	Potentiometer	1	256	10k	SPI	Volatile	2.7V ~ 5.5V	-	±20%	500ppm/°C	Surface Mount	8-SOIC	8-SOIC (0.154", 3.90mm Width)	-40°C ~ 125°C	200
AD8400ARZ100-REEL IC DGTL POT 100KOHM 256TAP 8SOIC Analog Devices Inc.	121	$3.93	Tape & Reel (TR)	Active	Linear	Potentiometer	1	256	100k	SPI	Volatile	2.7V ~ 5.5V	-	±30%	500ppm/°C	Surface Mount	8-SOIC	8-SOIC (0.154", 3.90mm Width)	-40°C ~ 125°C	200
AD5242BRZ100-REEL7 IC DGT POT 100KOHM 256TAP 16SOIC Analog Devices Inc.	113	$4.17	Tape & Reel (TR)	Active	Linear	Potentiometer	2	256	100k	I²C	Volatile	2.7V ~ 5.5V, ±2.3V ~ 2.7V	Selectable Address	-30%, +50%	30ppm/°C	Surface Mount	16-SOIC	16-SOIC (0.154", 3.90mm Width)	-40°C ~ 105°C	60
AD5175BCPZ-10-RL7 IC DGTL POT 10KOHM 10LFCSP Analog Devices Inc.	147	$4.41	Tape & Reel (TR)	Active	Linear	Rheostat	1	1024	10k	I²C	Non-Volatile	2.7V ~ 5.5V, ±2.5V ~ 2.75V	Selectable Address	±15%	35ppm/°C	Surface Mount	10-LFCSP-WD (3x3)	10-VFDFN Exposed Pad, CSP	-40°C ~ 125°C	35
AD5175BRMZ-10-RL7 IC DGT POT 10KOHM 1024TAP 10MSOP Analog Devices Inc.	131	$4.66	Tape & Reel (TR)	Active	Linear	Rheostat	1	1024	10k	I²C	Non-Volatile	2.7V ~ 5.5V, ±2.5V ~ 2.75V	Selectable Address	±15%	35ppm/°C	Surface Mount	10-MSOP	10-TFSOP, 10-MSOP (0.118", 3.00mm Width)	-40°C ~ 125°C	35
AD5280BRUZ20-REEL7 IC DGT POT 20KOHM 256TAP 14TSSOP Analog Devices Inc.	124	$5.70	Tape & Reel (TR)	Active	Linear	Potentiometer	1	256	20k	I²C	Volatile	4.5V ~ 16.5V, ±5V	Selectable Address	±30%	30ppm/°C	Surface Mount	14-TSSOP	14-TSSOP (0.173", 4.40mm Width)	-40°C ~ 85°C	60
AD5260BRUZ200-RL7 IC DGT POT 200KOHM 256TP 14TSSOP Analog Devices Inc.	82	$5.82	Tape & Reel (TR)	Active	Linear	Potentiometer	1	256	200k	SPI	Volatile	4.5V ~ 16.5V, ±5V	Cascade Pin	±30%	35ppm/°C	Surface Mount	14-TSSOP	14-TSSOP (0.173", 4.40mm Width)	-40°C ~ 85°C	60
AD5162BRMZ10 IC DGTL POT 10KOHM 256TAP 10MSOP Analog Devices Inc.	22	$3.10	Tube	Active	Linear	Potentiometer	2	256	10k	SPI	Volatile	2.7V ~ 5.5V	-	±20%	35ppm/°C	Surface Mount	10-MSOP	10-TFSOP, 10-MSOP (0.118", 3.00mm Width)	-40°C ~ 125°C	160
AD8402ARUZ1-REEL IC DGTL POT 1KOHM 256TAP 14TSSOP Analog Devices Inc.	58	$6.08	Tape & Reel (TR)	Active	Linear	Potentiometer	2	256	1k	SPI	Volatile	2.7V ~ 5.5V	-	-	700ppm/°C	Surface Mount	14-TSSOP	14-TSSOP (0.173", 4.40mm Width)	-40°C ~ 125°C	200
AD8402ARZ1-REEL IC DGTL POT 1KOHM 256TAP 14SOIC Analog Devices Inc.	156	$6.03	Tape & Reel (TR)	Active	Linear	Potentiometer	2	256	1k	SPI	Volatile	2.7V ~ 5.5V	-	-	700ppm/°C	Surface Mount	14-SOIC	14-SOIC (0.154", 3.90mm Width)	-40°C ~ 125°C	200
AD5282BRUZ50-REEL7 IC DGT POT 50KOHM 256TAP 16TSSOP Analog Devices Inc.	122	$6.30	Tape & Reel (TR)	Active	Linear	Potentiometer	2	256	50k	I²C	Volatile	4.5V ~ 16.5V, ±5V	Selectable Address	±30%	30ppm/°C	Surface Mount	16-TSSOP	16-TSSOP (0.173", 4.40mm Width)	-40°C ~ 85°C	60
AD8400ARZ10 IC DGTL POT 10KOHM 256TAP 8SOIC Analog Devices Inc.	222	$3.92	Bulk	Active	Linear	Potentiometer	1	256	10k	SPI	Volatile	2.7V ~ 5.5V	-	±20%	500ppm/°C	Surface Mount	8-SOIC	8-SOIC (0.154", 3.90mm Width)	-40°C ~ 125°C	200
AD8400ARZ50 IC DGTL POT 50KOHM 256TAP 8SOIC Analog Devices Inc.	30	$3.97	Tube	Active	Linear	Potentiometer	1	256	50k	SPI	Volatile	2.7V ~ 5.5V	-	±30%	500ppm/°C	Surface Mount	8-SOIC	8-SOIC (0.154", 3.90mm Width)	-40°C ~ 125°C	200

About Digital Potentiometers (Digipots)

What are Digital Potentiometers (Digipots)?

Digital Potentiometers (Digipots)

Digital Potentiometers, commonly referred to as Digipots, are electronic devices that emulate the functionality of traditional mechanical potentiometers but with digital control. They are used to adjust and control resistance in a circuit, allowing for precise tuning and calibration. Digipots operate by using a series of resistive elements and electronic switches, which are controlled by digital signals, typically from a microcontroller or a digital interface. These devices provide a more reliable and versatile solution compared to their mechanical counterparts, offering features such as non-volatile memory, programmability, and the ability to interface with digital systems.

Types of Digital Potentiometers (Digipots)

Single-Channel Digipots

Single-channel digipots are designed to control a single resistance path. They are ideal for applications where a single variable resistor is needed, such as volume control in audio equipment or brightness adjustment in displays. These digipots offer simplicity and ease of integration into existing circuits.

Multi-Channel Digipots

Multi-channel digipots contain multiple resistive paths within a single package, allowing for simultaneous control of several parameters. They are commonly used in complex systems where multiple adjustments are necessary, such as in multi-channel audio mixers or advanced sensor calibration systems.

Non-Volatile Digipots

Non-volatile digipots retain their resistance settings even when power is removed. This feature is crucial for applications where settings need to be preserved across power cycles, such as in industrial control systems or consumer electronics that require consistent performance without manual recalibration.

Programmable Digipots

Programmable digipots offer the ability to set and adjust resistance values through software commands. They are suitable for applications requiring dynamic resistance changes, such as adaptive filtering in communication systems or automated testing setups.

How to choose Digital Potentiometers (Digipots)?

When selecting a digital potentiometer, several key parameters should be considered:

Resolution: The number of steps or levels the digipot can provide. Higher resolution allows for finer control.
Resistance Range: The total resistance offered by the digipot. Choose a range that suits your application's requirements.
Interface: Ensure compatibility with your system's digital interface, such as I2C, SPI, or parallel.
Temperature Coefficient: Consider the stability of the resistance value over temperature changes, especially in environments with fluctuating temperatures.
Power Rating: Ensure the digipot can handle the power levels in your application without degradation.

Evaluating product quality and reliability involves reviewing supplier datasheets, customer reviews, and industry certifications. Consider environmental factors such as humidity and temperature, and ensure the digipot is installed in a manner that minimizes exposure to adverse conditions.

Applications of Digital Potentiometers (Digipots)

Consumer Electronics

In consumer electronics, digipots are used for volume control in audio devices, brightness adjustment in displays, and tuning in radio receivers. Their digital control allows for seamless integration with modern user interfaces, providing a smooth and precise user experience.

Industrial Automation

Digipots play a crucial role in industrial automation by providing precise control over motor speeds, sensor calibration, and process adjustments. Their reliability and programmability make them ideal for harsh industrial environments where manual adjustments are impractical.

Automotive Systems

In automotive applications, digipots are used for adjusting lighting levels, tuning electronic control units (ECUs), and managing sensor outputs. Their ability to withstand automotive-grade conditions ensures consistent performance and reliability.

Medical Devices

Medical devices utilize digipots for fine-tuning sensor outputs, adjusting signal processing parameters, and controlling therapeutic equipment settings. Their precision and stability are critical in maintaining the accuracy and safety of medical diagnostics and treatments.

Telecommunications

In telecommunications, digipots are employed in adaptive filtering, gain control, and impedance matching. Their programmability allows for dynamic adjustments, optimizing signal quality and network performance in real-time.