Data Acquisition - Analog to Digital Converters (ADC)

Part Number	Description / PDF	Quantity
ADS8317IDGKT Texas Instruments	IC ADC 16BIT SAR 8VSSOP	779
MAX117EPI Analog Devices, Inc.	400KSPS, 8-CHANNEL, 8-BIT ADC	194
ADS7820UB Burr-Brown (Texas Instruments)	SAR ADC, 12-BIT, PARALLEL ACCESS	4676
AD7854BR Analog Devices, Inc.	12-BIT SAR PARALLEL ADC	949
TLC545CN Texas Instruments	SAR ADC, 8-BIT, SERIAL ACCESS	509
AD4021BRMZ Analog Devices, Inc.	20-BIT, 1 MSPS, DIFF, PULSAR AD	35
ADS8505IBDBRG4 Texas Instruments	IC ADC 16BIT SAR 28SSOP	0
LTC1403AHMSE#PBF Analog Devices, Inc.	ADC, PROPRIETARY METHOD, 14-BIT,	35
AD7707BRZ-REEL7 Analog Devices, Inc.	IC ADC 16BIT SIGMA-DELTA 20SOIC	0
ADC1015S080HN/C1,5 NXP Semiconductors	IC ADC 10BIT PIPELINED 40HVQFN	47
MX7575JN+ Analog Devices, Inc.	ADC, SUCCESSIVE APPROXIMATION, 8	3236
LTC2312HTS8-12#WTRPBF Analog Devices, Inc.	12-B, 500KSPS SERIAL SMPL ADC IN	0
AD7824UQ Analog Devices, Inc.	ADC, FLASH METHOD, 8 BIT, 1 FUNC	1482
AD7828KP Analog Devices, Inc.	8-BIT FLASH ADC, 8 CHANNEL	2136
AD7893SQ-2 Analog Devices, Inc.	12-BIT SAR SERIAL ADC	2614
LTC2400CS8#PBF Analog Devices, Inc.	IC ADC 24BIT SIGMA-DELTA 8SOIC	1037
TLC0838IPWR Texas Instruments	TLC0838 8-BIT, 8-CH, 20 KSPS ADC	0
ADS1282IPWR Texas Instruments	IC ADC 31BIT SIGMA-DELTA 28TSSOP	2181
ADS7957SRHBT Texas Instruments	IC ADC 10BIT SAR 32VQFN	480
ADS8166IRHBT Texas Instruments	IC ADC 16BIT SAR 32VQFN	356

Data Acquisition - Analog to Digital Converters (ADC)

1. Overview

Analog-to-Digital Converters (ADCs) are semiconductor devices that convert continuous analog signals into discrete digital values. This core functionality enables digital systems to process real-world signals such as temperature, pressure, audio, and sensor data. ADCs are fundamental components in modern electronics, serving critical roles in communication systems, medical equipment, industrial automation, and consumer electronics. Their performance directly impacts system accuracy, speed, and overall efficiency.

2. Main Types and Functional Classification

Type	Functional Characteristics	Application Examples
Successive Approximation ADC	Medium-speed, high accuracy, moderate power consumption	Industrial control systems, precision measurement
Integrating ADC	High noise rejection, low speed, excellent linearity	Digital multimeters, weigh scales
Pipeline ADC	High-speed operation with moderate resolution	Wireless communication base stations, video processing
Delta-Sigma ( ) ADC	High resolution, low noise, oversampling architecture	Audio processing, precision sensor interfaces
Flash ADC	Extremely high-speed conversion, limited resolution	Radar systems, high-speed oscilloscopes

3. Structure and Components

Typical ADC architecture includes: - Sample-and-Hold Circuit: Captures and stabilizes input signal - Quantizer: Maps analog values to discrete levels - Encoder: Converts quantized values to binary code - Reference Voltage Circuit: Provides stable voltage Modern ADCs integrate additional components like programmable gain amplifiers and digital filters. Fabricated using CMOS or BiCMOS processes, they come in packages like QFP, TSSOP, and BGA with pin counts ranging from 8 to 256.

4. Key Technical Specifications

Parameter	Description	Importance
Resolution	Number of digital output bits	Determines measurement precision
Sampling Rate	Maximum conversion speed (SPS)	Defines signal bandwidth capability
Signal-to-Noise Ratio (SNR)	Dynamic range measurement	Impacts signal fidelity
Integral Nonlinearity (INL)	Deviation from ideal transfer function	Critical for measurement accuracy
Power Consumption	Operating current/voltage requirements	Affects system efficiency and thermal design

5. Application Fields

Telecommunications: 5G base stations, optical transceivers
Medical Equipment: MRI scanners, patient monitoring systems
Industrial Automation: PLC systems, precision sensors
Consumer Electronics: Smartphones, wearables
Automotive: LiDAR systems, battery management

6. Leading Manufacturers and Products

Manufacturer	Representative Product	Key Specifications
TI (Texas Instruments)	ADS9283	24-bit ADC, 2MSPS, 2LSB INL
Analog Devices	AD7621	16-bit SAR ADC, 3MSPS, 85dB SNR
Maxim Integrated	MAX11905	16-bit pipeline ADC, 125MSPS
STMicroelectronics	LTC2389-18	18-bit SAR ADC, 1MSPS, rail-to-rail input

7. Selection Guidelines

Key considerations include: - Application Requirements: Match resolution/speed to system needs - Environmental Conditions: Temperature range, vibration resistance - Cost Constraints: Balance performance with budget - Supply Chain: Availability, package compatibility - Support Features: Required interfaces (SPI, I2C), calibration capabilities

8. Industry Trends

Emerging trends include: - Development of 32-bit ADCs for precision applications - Integration with AI acceleration for edge computing - Energy-efficient designs for IoT devices - High-temperature ADCs for automotive applications - Advanced packaging technologies (3D stacking) - Software-defined radio ADCs with tunable bandwidth