Data Acquisition - Analog to Digital Converters (ADC)

Part Number	Description / PDF	Quantity
AD7291BCPZ-RL7 Analog Devices, Inc.	IC ADC 12BIT SAR 20LFCSP-WQ	3344
LTC2336CMS-18#TRPBF Analog Devices, Inc.	IC ADC 18BIT SAR 16MSOP	0
MAX154ACNG Analog Devices, Inc.	8-BIT ADC WITH MUX AND REF	700
AD9460BSVZ-80 Analog Devices, Inc.	IC ADC 16BIT PIPELINED 100TQFP	12
LTC2379HMS-18#TRPBF Analog Devices, Inc.	IC ADC 18BIT SAR 16MSOP	0
AD9644BCPZ-80 Analog Devices, Inc.	ADC, FLASH METHOD, 14-BIT, 2 CHA	4160
AD1555APZ Analog Devices, Inc.	AD1555 - 24-BIT SIGMA-DELTA ADC	69
LTC2382CDE-16#TRPBF Analog Devices, Inc.	16-BIT, 500 KSPS, LOW POWER SAR	2500
AD7796BRUZ Analog Devices, Inc.	IC ADC 16BIT SIGMA-DELTA 16TSSOP	80
AD7828BR Analog Devices, Inc.	8-BIT FLASH ADC, 8 CHANNEL	6
LTC2344HUH-16#PBF Analog Devices, Inc.	IC ADC 16BIT SAR 32QFN	159
AD673JNZ Analog Devices, Inc.	IC ADC 8BIT SAR 20DIP	9
AD9240ASZ Analog Devices, Inc.	IC ADC 14BIT PIPELINED 44MQFP	730
AD7492BRUZ-5 Analog Devices, Inc.	IC ADC 12BIT SAR 24TSSOP	21
LTC1409CSW#PBF Analog Devices, Inc.	IC ADC 12BIT SAR 28SOIC	8
LTC2484IDD#PBF Analog Devices, Inc.	IC ADC 24BIT SIGMA-DELTA 10DFN	162
LTC2258IUJ-14#PBF Analog Devices, Inc.	IC ADC 14BIT PIPELINED 40QFN	0
LTC2220IUP#PBF Analog Devices, Inc.	IC ADC 12BIT PIPELINED 64QFN	105
AD7124-4TRUZ-EP Analog Devices, Inc.	IC ADC 24BIT SIGMA 24TSSOP	0
LTC1199LIMS8#TRPBF Analog Devices, Inc.	IC ADC 10BIT SAR 8MSOP	0

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