Data Acquisition - Analog to Digital Converters (ADC)

Category Introduction

Analog-to-digital converters (ADC, A/D, or A-to-D) sample an analog signal, such as a sound picked up by a microphone or the output of a sensor, into a digital signal. Typically, the digital output is a two's complement binary number that is proportional to the input. Input types may be differential, pseudo differential or single-ended. ADCs are selected by number of bits, sampling rate, number of inputs, interface, number of converters, and the architecture such as adaptive delta, dual slope, folding, pipelined, SAR, Sigma-Delta or two-step.

Product List

11720 Items

Mfr Part #	Quantity Available	UnitPrice	Series	Packaging	Product Status	Number of Bits	Sampling Rate (Per Second)	Number of Inputs	Input Type	Data Interface	Configuration	Ratio - S/H:ADC	Number of A/D Converters	Architecture	Reference Type	Voltage - Supply, Analog	Voltage - Supply, Digital	Features	Operating Temperature	Package / Case	Supplier Device Package	Mounting Type
ADC101C027CIMK/NOPB IC ADC 10BIT SAR TSOT23-6 Texas Instruments	210	$1.83		Tape & Reel (TR)	Active	10	188.9k	1	Single Ended	I²C	S/H-ADC	1:1	1	SAR	Supply	2.7V ~ 5.5V	2.7V ~ 5.5V	Selectable Address	-40°C ~ 105°C	SOT-23-6 Thin, TSOT-23-6	SOT-23-THIN	Surface Mount
MAX1118EKA+T IC ADC 8BIT SAR SOT23-8 Analog Devices Inc./Maxim Integrated	331	$2.27		Tape & Reel (TR)	Active	8	100k	2	Single Ended	SPI	MUX-S/H-ADC	1:1	1	SAR	External	2.7V ~ 5.5V	2.7V ~ 5.5V	-	-40°C ~ 85°C	SOT-23-8	SOT-23-8	Surface Mount
NAU7802SGI IC ADC 24BIT SIGMA-DELTA 16SOP Nuvoton Technology Corporation	176	$1.68		Tube	Active	24	80	2	Differential, Single Ended	I²C	MUX-PGA-ADC	-	1	Sigma-Delta	External, Internal	2.7V ~ 5.5V	2.7V ~ 5.5V	PGA, Temperature Sensor	-40°C ~ 85°C	16-SOIC (0.154", 3.90mm Width)	16-SOP	Surface Mount
MAX11666AUB+T IC ADC 12BIT SAR 10UMAX Analog Devices Inc./Maxim Integrated	136	$4.00		Tape & Reel (TR)	Active	12	500k	2	Single Ended	SPI	MUX-S/H-ADC	1:1	1	SAR	Supply	2.2V ~ 3.6V	2.2V ~ 3.6V	-	-40°C ~ 125°C	10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad	10-uMAX-EP	Surface Mount
ADC0804LCWMX/NOPB IC ADC 8BIT SAR 20SOIC Texas Instruments	205	$4.33		Tape & Reel (TR)	Active	8	10k	1	Differential	Parallel	ADC	-	1	SAR	External, Supply	4.5V ~ 6.3V	4.5V ~ 6.3V	-	-40°C ~ 85°C	20-SOIC (0.295", 7.50mm Width)	20-SOIC	Surface Mount
TLA2518IRTER IC ADC 12BIT SAR 16WQFN Texas Instruments	37	$4.49		Tape & Reel (TR)	Active	12	1M	8	Pseudo-Differential	SPI	MUX-ADC	0:1	1	SAR	Supply	2.35V ~ 5.5V	1.65V ~ 5.5V	Internal Oscillator	-40°C ~ 85°C	16-WFQFN Exposed Pad	16-WQFN (3x3)	Surface Mount
ADS7052IRUGR IC ADC 14BIT SAR 8X2QFN Texas Instruments	210	$4.51	Automotive, AEC-Q100	Tape & Reel (TR)	Active	14	1M	1	Single Ended	SPI	S/H-ADC	1:1	1	SAR	Supply	1.65V ~ 3.6V	1.65V ~ 3.6V	-	-40°C ~ 125°C	8-XFQFN	8-X2QFN (1.5x1.5)	Surface Mount
MAX1037EKA+T IC ADC 8BIT SAR SOT23-8 Analog Devices Inc./Maxim Integrated	170	$5.17		Tape & Reel (TR)	Active	8	188k	2, 4	Pseudo-Differential, Single Ended	I²C	MUX-S/H-ADC	1:1	1	SAR	External, Internal	2.7V ~ 3.6V	2.7V ~ 3.6V	-	-40°C ~ 85°C	SOT-23-8	SOT-23-8	Surface Mount
ADS7049QDCURQ1 IC ADC 12BIT SAR 8VSSOP Texas Instruments	192	$4.68	Automotive, AEC-Q101	Tape & Reel (TR)	Active	12	2M	1	Differential	SPI	S/H-ADC	1:1	1	SAR	Supply	2.35V ~ 3.6V	1.65V ~ 3.6V	-	-40°C ~ 125°C	8-VFSOP (0.091", 2.30mm Width)	8-VSSOP	Surface Mount
ADS7822EC/250 IC ADC 12BIT SAR 8VSSOP Texas Instruments	63	$5.69	microPOWER™	Tape & Reel (TR)	Active	12	200k	1	Pseudo-Differential	SPI	S/H-ADC	1:1	1	SAR	External	2.7V ~ 3.6V, 5V	2.7V ~ 3.6V, 5V	-	-40°C ~ 85°C	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-VSSOP	Surface Mount
ADS8634SRGER IC ADC 12BIT SAR 24VQFN Texas Instruments	61	$6.56		Tape & Reel (TR)	Active	12	1M	4	Single Ended	SPI	MUX-S/H-ADC	1:1	1	SAR	External, Internal	2.7V ~ 5.25V	1.65V ~ 5.25V	Temperature Sensor	-40°C ~ 125°C	24-VFQFN Exposed Pad	24-VQFN (4x4)	Surface Mount
AD7276AUJZ-500RL7 IC ADC 12BIT SAR TSOT23-6 Analog Devices Inc.	34	$6.47		Tape & Reel (TR)	Active	12	3M	1	Single Ended	SPI, DSP	S/H-ADC	1:1	1	SAR	Supply	2.35V ~ 3.6V	2.35V ~ 3.6V	-	-40°C ~ 125°C	SOT-23-6 Thin, TSOT-23-6	TSOT-6	Surface Mount
MAX11200EEE+T IC ADC 24BIT SIGMA-DELTA 16QSOP Analog Devices Inc./Maxim Integrated	87	$6.80		Tape & Reel (TR)	Active	24	480	1	Differential	SPI	ADC	-	1	Sigma-Delta	External	2.7V ~ 3.6V	1.71V ~ 3.6V	-	-40°C ~ 85°C	16-SSOP (0.154", 3.90mm Width)	16-QSOP	Surface Mount
MAX11615EEE+T IC ADC 12BIT SAR 16QSOP Analog Devices Inc./Maxim Integrated	27	$6.67		Tape & Reel (TR)	Active	12	94.4k	4, 8	Differential, Single Ended	I²C	MUX-S/H-ADC	1:1	1	SAR	External, Internal	2.7V ~ 3.6V	2.7V ~ 3.6V	-	-40°C ~ 85°C	16-SSOP (0.154", 3.90mm Width)	16-QSOP	Surface Mount
MAX11611EEE+T IC ADC 10BIT SAR 16QSOP Analog Devices Inc./Maxim Integrated	7	$7.47		Tape & Reel (TR)	Active	10	94.4k	6, 12	Differential, Single Ended	I²C	MUX-S/H-ADC	1:1	1	SAR	External, Internal	2.7V ~ 3.6V	2.7V ~ 3.6V	-	-40°C ~ 85°C	16-SSOP (0.154", 3.90mm Width)	16-QSOP	Surface Mount
ADS7828E/2K5 IC ADC 12BIT SAR 16TSSOP Texas Instruments	42	$6.80		Tape & Reel (TR)	Active	12	50k	8	Differential, Single Ended	I²C	MUX-S/H-ADC	1:1	1	SAR	External, Internal	2.7V ~ 3.6V, 5V	2.7V ~ 3.6V, 5V	-	-40°C ~ 85°C	16-TSSOP (0.173", 4.40mm Width)	16-TSSOP	Surface Mount
ADS7828EB/2K5 IC ADC 12BIT SAR 16TSSOP Texas Instruments	105	$6.84		Tape & Reel (TR)	Active	12	50k	8	Pseudo-Differential	I²C	MUX-S/H-ADC	1:1	1	SAR	External, Internal	2.7V ~ 5.25V	2.7V ~ 5.25V	-	-40°C ~ 85°C	16-TSSOP (0.173", 4.40mm Width)	16-TSSOP	Surface Mount
AD7278BUJZ-500RL7 IC ADC 8BIT SAR TSOT23-6 Analog Devices Inc.	63	$7.36		Tape & Reel (TR)	Active	8	3M	1	Single Ended	SPI, DSP	S/H-ADC	1:1	1	SAR	Supply	2.35V ~ 3.6V	2.35V ~ 3.6V	-	-40°C ~ 125°C	SOT-23-6 Thin, TSOT-23-6	TSOT-6	Surface Mount
AD7466BRTZ-REEL7 IC ADC 12BIT SAR SOT23-6 Analog Devices Inc.	58	$8.19		Tape & Reel (TR)	Active	12	200k	1	Single Ended	SPI, DSP	S/H-ADC	1:1	1	SAR	Supply	1.6V ~ 3.6V	1.6V ~ 3.6V	-	-40°C ~ 85°C	SOT-23-6	SOT-23-6	Surface Mount
LTC2312ITS8-12#TRMPBF IC ADC 12BIT SAR TSOT23-8 Analog Devices Inc.	90	$7.80		Tape & Reel (TR)	Active	12	500k	1	Single Ended	SPI	S/H-ADC	1:1	1	SAR	Internal	2.7V ~ 3.6V, 5V	2.7V ~ 3.6V, 5V	-	-40°C ~ 85°C	SOT-23-8 Thin, TSOT-23-8	TSOT-23-8	Surface Mount

About Analog-to-Digital Converters (ADC)

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

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.

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.

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.

Applications of Analog-to-Digital Converters (ADC)

1. Consumer Electronics

In consumer electronics, ADCs are crucial for converting analog audio and video signals into digital formats for processing and playback in devices like smartphones, televisions, and digital cameras. They ensure high-quality sound and image reproduction.

2. Medical Devices

ADCs are used in medical devices such as ECG machines and digital thermometers to convert physiological signals into digital data for monitoring and diagnosis, providing accurate and reliable patient information.

3. Automotive Industry

In the automotive sector, ADCs play a role in engine control units and sensor systems, converting analog signals from various sensors into digital data for real-time vehicle monitoring and control, enhancing safety and performance.

4. Telecommunications

ADCs are essential in telecommunications for converting analog voice signals into digital data for transmission over digital networks, ensuring clear and efficient communication.

5. Industrial Automation

In industrial automation, ADCs are used to convert analog signals from sensors and transducers into digital data for process control and monitoring, improving efficiency and accuracy in manufacturing processes.