Data Acquisition - Analog to Digital Converters (ADC)

Part Number	Description / PDF	Quantity
THS1401IPFB Texas Instruments	THS1401 14-BIT, 1-MSPS ANALOG-TO	14569
AD9051BRSZRL-2V Analog Devices, Inc.	10-BIT, 60 MSPS A/D CONVERTER	100
MX574ALEPI Analog Devices, Inc.	MX574 12-BIT ADC	73
LTC1196-1BCS8#PBF	LTC1196 - 8-BIT 710NS, 1MHZ SAMP	1300
AD7478AARMZ-REEL Analog Devices, Inc.	8-BIT SAR ADC, SERIAL ACCESS	9183
ADS7138IRTET Texas Instruments	12B 140KSPS SCH SAR ADC	248
AD5303ARU Analog Devices, Inc.	230UA, DUAL R-R 8-BIT DAC	4718
ADS112C04IRTER Texas Instruments	IC ADC 16BIT SIGMA-DELTA 16WQFN	2189
AD9281ARSZ Analog Devices, Inc.	IC ADC 8BIT PIPELINED 28SSOP	244
LTC2155IUP-14#PBF Analog Devices, Inc.	IC ADC 14BIT PIPELINED 64QFN	0
ADCS7476AIMFE/NOPB Texas Instruments	IC ADC 12BIT SAR SOT23-6	661
AD676JNZ Analog Devices, Inc.	IC ADC 16BIT SAR 28DIP	0
TLV0831CDR Texas Instruments	TLV0831 8-BIT 49 KSPS ADC SERIAL	14550
TLV2541IDR Texas Instruments	TLV2541 12-BIT, 200 KSPS ADC, SE	34844
LTC2180IUP#TRPBF Analog Devices, Inc.	IC ADC 16BIT PIPELINED 64QFN	0
LTC2362CS6#TRMPBF Analog Devices, Inc.	IC ADC 12BIT SAR TSOT23-6	0
ADC0820CCV	8-BIT ADC, FLASH METHOD	1679
AMC1203DW Texas Instruments	AMC1203 1-BIT, 10MHZ, 2ND-ORDER,	105
MX574AJP+T Maxim Integrated	IC ADC 12BIT SAR 28PLCC	500
AD7656BSTZ Analog Devices, Inc.	IC ADC 16BIT SAR 64LQFP	138

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