Data Acquisition - ADCs/DACs - Special Purpose

Category Introduction

Products in this family are used for the conversion of information between analog and digital representations and are adapted for specific use cases or integrate additional features or functionality not commonly encountered in general-purpose data converters. Examples include devices that integrate low-noise amplifiers and variable gain stages for ultrasound or automotive radar applications, audio and video focused products, devices that integrate functionality to indicate measured values on segmented displays, devices integrating galvanic isolation between input and output, and others.

Product List

2708 Items

Mfr Part #	Quantity Available	UnitPrice	Series	Packaging	Product Status	Type	Number of Channels	Resolution (Bits)	Sampling Rate (Per Second)	Data Interface	Voltage Supply Source	Voltage - Supply	Operating Temperature	Mounting Type	Package / Case	Supplier Device Package
WM8524CGEDT/R IC DAC/AUDIO 24BIT 192K 16TSSOP Cirrus Logic Inc.	242	$2.45		Tape & Reel (TR)	Active	DAC, Audio	2	24 b	192k	I²S	Single Supply	2.97V ~ 3.63V	-40°C ~ 85°C	Surface Mount	16-TSSOP (0.173", 4.40mm Width)	16-TSSOP
AK5704EN IC ADC 4CH 32BIT W/MIC-AMP 28QFN Asahi Kasei Microdevices/AKM	121	$3.03		Tape & Reel (TR)	Active	ADC, MIC-AMP	4	32 b	192k	I²S	Analog and Digital	1.7V ~ 3.6V, 1.65V ~ 3.6V	-40°C ~ 85°C (TA)	Surface Mount	28-VFQFN Exposed Pad	28-QFN (4x4)
PCM1781DBQR IC DAC/AUDIO 24BIT 200K 16SSOP Texas Instruments	154	$2.91		Tape & Reel (TR)	Active	DAC, Audio	2	24 b	200k	I²S	Single Supply	5V	-25°C ~ 85°C	Surface Mount	16-SSOP (0.154", 3.90mm Width)	16-SSOP
CS4344-CZZR IC DAC/AUDIO 24BIT 192K 10SSOP Cirrus Logic Inc.	92	$4.00	Popguard®	Tape & Reel (TR)	Active	DAC, Audio	2	24 b	192k	I²S	Single Supply	3V ~ 3.47V, 5V	-10°C ~ 70°C	Surface Mount	10-TFSOP, 10-MSOP (0.118", 3.00mm Width)	10-SSOP
AD7147ACPZ-1500RL7 IC CAP TO DGT 16BIT 250K 24LFCSP Analog Devices Inc.	209	$4.02	CapTouch™	Tape & Reel (TR)	Active	Capacitance-to-Digital Converter	13	16 b	250k	I²C, Serial	Single Supply	2.6V ~ 3.6V	-40°C ~ 85°C	Surface Mount	24-WFQFN Exposed Pad, CSP	24-LFCSP (4x4)
DAC161P997CISQ/NOPB IC DAC 16BIT 16WQFN Texas Instruments	131	$5.70		Tape & Reel (TR)	Active	DAC	1	16 b	-	Serial	Analog and Digital	2.7V ~ 3.6V	-40°C ~ 105°C	Surface Mount	16-WFQFN Exposed Pad	16-WQFN (4x4)
CS4345-CZZ IC DAC/AUDIO 24BIT 192K 10TSSOP Cirrus Logic Inc.	113	$3.96	Popguard®	Tube	Active	DAC, Audio	1	24 b	192k	SPI	Single Supply	3V ~ 3.47V, 5V	-10°C ~ 70°C	Surface Mount	10-TFSOP, 10-MSOP (0.118", 3.00mm Width)	10-TSSOP
CS4344-CZZ IC DAC/AUDIO 24BIT 192K 10TSSOP Cirrus Logic Inc.	219	$3.94	Popguard®	Tube	Active	DAC, Audio	2	24 b	192k	I²S	Single Supply	3V ~ 3.47V, 5V	-10°C ~ 70°C	Surface Mount	10-TFSOP, 10-MSOP (0.118", 3.00mm Width)	10-TSSOP
WM8737CLGEFL IC ADC/AUDIO 24BIT 96K 32QFN Cirrus Logic Inc.	127	$4.44		Tube	Obsolete	ADC, Audio	6	24 b	96k	SPI	Analog and Digital	1.42V ~ 3.6V	-25°C ~ 85°C	Surface Mount	32-VFQFN Exposed Pad	32-QFN (5x5)
CS4344-DZZ IC DAC/AUDIO 24BIT 192K 10TSSOP Cirrus Logic Inc.	174	$4.76	Popguard®	Tube	Active	DAC, Audio	1	24 b	192k	SPI	Single Supply	3V ~ 3.47V, 5V	-40°C ~ 85°C	Surface Mount	10-TFSOP, 10-MSOP (0.118", 3.00mm Width)	10-TSSOP
PCM1860DBT IC ADC/AUDIO 24BIT 192K 30TSSOP Texas Instruments	147	$4.93		Tube	Active	ADC, Audio	2	24 b	192k	I²S	Analog and Digital	3V ~ 3.6V	-40°C ~ 125°C	Surface Mount	30-TFSOP (0.173", 4.40mm Width)	30-TSSOP
AD5593RBCPZ-RL7 IC ADC/DAC 12BIT 16LFCSP Analog Devices Inc.	53	$8.83		Tape & Reel (TR)	Active	ADC, DAC	8	12 b	-	I²C	Analog and Digital	1.8V ~ 5.5V	-40°C ~ 105°C	Surface Mount	16-WFQFN, CSP	16-LFCSP-WQ (3x3)
CS5343-CZZ IC ADC/AUDIO 24BIT 96K 10TSSOP Cirrus Logic Inc.	29	$5.54		Tube	Active	ADC, Audio	2	24 b	96k	Serial	Single Supply	3.1V ~ 3.5V, 4.75V ~ 5.25V	-40°C ~ 85°C	Surface Mount	10-TFSOP, 10-MSOP (0.118", 3.00mm Width)	10-TSSOP
PCM1864DBTR IC ADC/AUDIO 24BIT 192K 30TSSOP Texas Instruments	95	$7.92		Tape & Reel (TR)	Active	ADC, Audio	4	24 b	192k	I²C, SPI	Analog and Digital	3V ~ 3.6V	-40°C ~ 125°C	Surface Mount	30-TFSOP (0.173", 4.40mm Width)	30-TSSOP
LDC1001NHRR IC IND TO DGTL CONV 16BIT 16WSON Texas Instruments	105	$7.97		Tape & Reel (TR)	Active	Inductance-to-Digital Converter	2	16 b	-	SPI	Analog and Digital	3.3V, 5V	-40°C ~ 125°C	Surface Mount	16-WFDFN Exposed Pad	16-WSON (5x4)
PCM5102APW IC DAC 16/24/32BIT 384K 20TSSOP Texas Instruments	16	$6.37	DirectPath™	Tube	Active	DAC, Audio	2	16 b, 24 b, 32 b	384k	PCM	Analog and Digital	1.65V ~ 3.46V	-25°C ~ 85°C	Surface Mount	20-TSSOP (0.173", 4.40mm Width)	20-TSSOP
CS43L21-CNZ IC DAC/AUDIO 24BIT 96K 32QFN Cirrus Logic Inc.	45	$6.60		Tray	Active	DAC, Audio	1	24 b	96k	Serial	Analog and Digital	1.65V ~ 2.63V	-40°C ~ 85°C	Surface Mount	32-VFQFN Exposed Pad	32-QFN (5x5)
HCPL-7860-300E IC ISOLATED MODULE 12BIT 8SMD Broadcom Limited	108	$7.10		Tube	Active	Isolated Module	4	12 b	-	DSP	Single Supply	5V	-40°C ~ 85°C	Surface Mount	8-SMD, Gull Wing	8-SMD
PCM1690DCA IC DAC/AUDIO 24BIT 192K 48HTSSOP Texas Instruments	116	$7.39	Automotive, AEC-Q100	Tube	Active	DAC, Audio	8	24 b	192k	DSP, I²S	Analog and Digital	3V ~ 3.6V, 5V	-40°C ~ 85°C	Surface Mount	48-TFSOP (0.240", 6.10mm Width) Exposed Pad	48-HTSSOP
PCM1795DB IC DAC/AUDIO 32BIT 200K 28SSOP Texas Instruments	60	$9.04		Tube	Active	DAC, Audio	2	32 b	200k	DSD, PCM	Analog and Digital	3V ~ 3.6V, 5V	-25°C ~ 85°C	Surface Mount	28-SSOP (0.209", 5.30mm Width)	28-SSOP

About Analog-to-Digital Converters (ADC) & Digital-to-Analog Converters (DAC)

What are Analog-to-Digital Converters (ADC) & Digital-to-Analog Converters (DAC)?

Analog-to-Digital Converters (ADC)

Analog-to-Digital Converters (ADCs) are integral components in the data acquisition process, transforming analog signals, which are continuous in nature, into digital signals that can be processed by digital systems. The fundamental operating principle of an ADC involves sampling the analog input signal at discrete intervals and quantizing the sampled values into a finite number of levels, represented in binary form. This conversion allows digital systems to interpret and manipulate real-world analog signals, such as sound, temperature, or pressure, enabling precise data analysis and processing.

Digital-to-Analog Converters (DAC)

Digital-to-Analog Converters (DACs) are essential components in the realm of data acquisition systems, responsible for transforming digital signals into analog ones. This conversion is crucial for interfacing digital systems with the real world, where most signals are inherently analog. DACs work by taking discrete digital values, often in binary form, and converting them into continuous analog voltages or currents. The basic operating principle involves using a reference voltage and a network of resistors or capacitors to generate a proportional analog output that corresponds to the digital input value. This process allows digital devices to control analog systems, such as audio amplifiers or motor controllers, with precision and accuracy.

Types of Analog-to-Digital Converters (ADC)

1. Successive Approximation Register (SAR) ADC

SAR ADCs are widely used due to their balance between speed and accuracy. They work by using a binary search algorithm to converge on the input signal level, providing a digital output in a step-by-step manner. SAR ADCs are ideal for applications requiring moderate speed and high resolution, such as industrial control systems and instrumentation.

2. Sigma-Delta (ΣΔ) ADC

Sigma-Delta ADCs are known for their high resolution and noise immunity. They oversample the input signal and use digital filtering to achieve precise conversion, making them suitable for audio applications and precision measurement devices where signal fidelity is crucial.

3. Flash ADC

Flash ADCs are the fastest type, converting analog signals to digital form in a single step using a parallel array of comparators. This speed makes them ideal for applications requiring rapid data acquisition, such as digital oscilloscopes and radar systems, though they typically offer lower resolution compared to other types.

4. Integrating ADC

Integrating ADCs, including dual-slope converters, are known for their accuracy and noise rejection capabilities. They integrate the input signal over a period, making them suitable for applications like digital voltmeters and other precision measurement tools where accuracy is more critical than speed.

Types of Digital-to-Analog Converters (DAC)

1. Binary-Weighted DAC

Binary-weighted DACs utilize a network of resistors with values weighted in powers of two. Each bit of the digital input controls a switch that connects a corresponding resistor to the output. These DACs are simple and fast but require precise resistor values, making them less practical for high-resolution applications.

2. R-2R Ladder DAC

The R-2R ladder DAC employs a repeating structure of resistors in a ladder-like configuration. This design simplifies the resistor requirements, needing only two distinct values, R and 2R. R-2R DACs are popular for their ease of implementation and scalability to higher resolutions.

3. Sigma-Delta DAC

Sigma-Delta DACs use oversampling and noise shaping techniques to achieve high-resolution outputs. They are particularly effective in applications requiring high precision and low noise, such as audio processing. These DACs convert a high-frequency digital bitstream into an analog signal through filtering and integration.

4. Pulse Width Modulation (PWM) DAC

PWM DACs generate an analog signal by varying the width of pulses in a digital signal. The average voltage of the pulse train corresponds to the desired analog output. PWM DACs are cost-effective and widely used in applications where high precision is not critical.

How to choose Analog-to-Digital Converters (ADC)?

When selecting an ADC, several key parameters should be considered:

Resolution: Determines the smallest change in input that can be detected. Higher resolution is essential for applications requiring precise measurements.
Sampling Rate: The speed at which the ADC can sample the input signal. Choose a higher sampling rate for applications needing rapid data acquisition.
Input Range: Ensure the ADC can handle the expected range of input signals without distortion.
Power Consumption: Critical for battery-powered or portable devices where energy efficiency is a priority.
Cost: Balance performance requirements with budget constraints.

Evaluating product quality and reliability involves reviewing supplier specifications, customer reviews, and industry certifications. Environmental factors such as temperature range and electromagnetic interference should also be considered, along with installation requirements like board space and connectivity options.

How to choose Digital-to-Analog Converters (DAC)?

When selecting a DAC, several key parameters must be considered:

Resolution: Determines the smallest change in output that the DAC can produce. Higher resolution is crucial for applications requiring fine control.
Sampling Rate: The speed at which the DAC can process digital inputs. Higher rates are necessary for applications with fast-changing signals.
Output Range: The range of analog output voltages or currents the DAC can produce. Ensure compatibility with the intended application.
Linearity: The degree to which the output accurately follows the input. High linearity is essential for precision applications.
Power Consumption: Consider the power requirements, especially for battery-operated devices.

Evaluating product quality and reliability involves reviewing supplier specifications, customer reviews, and industry certifications. Environmental factors such as temperature range and humidity tolerance should also be considered, along with installation requirements like PCB space and connectivity options.

Applications of Analog-to-Digital Converters (ADC) & Digital-to-Analog Converters (DAC)

1. Consumer Electronics

In the realm of consumer electronics, ADCs and DACs are pivotal in ensuring seamless interaction between digital and analog signals. For instance, in audio devices such as smartphones, MP3 players, and home theater systems, ADCs convert analog audio signals into digital data for processing, while DACs perform the reverse, converting digital audio files back into analog signals for playback through speakers or headphones. This conversion is crucial for maintaining sound quality and fidelity.

2. Telecommunications

Telecommunications rely heavily on ADCs and DACs to manage the flow of data across networks. In cellular networks, ADCs convert analog voice signals into digital data for transmission over digital networks, while DACs convert incoming digital signals back into analog form for the end-user. This conversion process is essential for maintaining the integrity and clarity of voice and data communications.

3. Medical Imaging

In medical imaging, ADCs and DACs play a critical role in converting analog signals from imaging devices into digital data for analysis and storage. For example, in MRI and CT scanners, ADCs convert the analog signals captured by sensors into digital images that can be processed and analyzed by medical professionals. DACs may be used in the playback of diagnostic audio signals or in the control of imaging equipment.

4. Automotive Industry

The automotive industry utilizes ADCs and DACs in various applications, including engine control units (ECUs), infotainment systems, and advanced driver-assistance systems (ADAS). ADCs convert analog signals from sensors monitoring engine parameters, such as temperature and pressure, into digital data for processing by the ECU. DACs are used in infotainment systems to convert digital audio and video signals into analog outputs for speakers and displays.

5. Industrial Automation

In industrial automation, ADCs and DACs are integral to the operation of control systems and instrumentation. ADCs convert analog signals from sensors monitoring variables like temperature, pressure, and flow into digital data for analysis and control. DACs are used to convert digital control signals into analog outputs to drive actuators and other control devices, ensuring precise control of industrial processes.