Data Acquisition - Analog to Digital Converters (ADC)

Part Number	Description / PDF	Quantity
ADS1219IRTER Texas Instruments	CONVERTER	0
ADS6442IRGCR Texas Instruments	4-CH, 12-BIT ADC, PROP METHOD	15924
ADS8322Y/250 Texas Instruments	ADS8322 UNIPOLAR, 16-BIT, 500KSP	3328
TLV2548IDWR Texas Instruments	TLV2548 12-BIT 200 KSPS ADC SER	6984
ADS112C04IPWR Texas Instruments	IC ADC 16BIT SIGMA-DELTA 16TSSOP	1696
AD3421QRWETQ1 Texas Instruments	QUAD CH 12 BIT 25MSPS ON AUTO GR	247
ADS42LB49IRGC25 Texas Instruments	2-CH, 14-BIT ADC, PROP METHOD	0
ADS8885IDRCR Texas Instruments	ADS8885 18-BIT, 400-KSPS, 1-CH S	5975
ADS8881CDGSR Texas Instruments	IC ADC 18BIT SAR 10VSSOP	0
ADS8331IBRGER Texas Instruments	ADS8331 2.7V-TO-5.5V 16-BIT 500K	29584
ADS114S08BIRHBT Texas Instruments	IC ADC 16BIT SIGMA-DELTA 32VQFN	100
ADS1000A1QDBVRQ1 Texas Instruments	ADS1000-Q1 AUTOMOTIVE, 12-BIT, 1	9208
ADS1271IPWR Texas Instruments	IC ADC 24BIT SIGMA-DELTA 16TSSOP	3998
ADS7808U/1K Texas Instruments	ADS7808 12-BIT 10US SERIAL CMOS	4553
TLV1549CPG4 Texas Instruments	IC ADC 10BIT SAR 8DIP	0
ADS62C15IRGCTG4 Texas Instruments	IC ADC 11BIT PIPELINED 64VQFN	0
ADS7042IDCUR Texas Instruments	ADS7042 - 12-BIT 1MSPS ULTRA-LOW	698
ADS7822PB Texas Instruments	SAR ADC, 12-BIT, SERIAL ACCESS	136875
ADS8668IDBT Texas Instruments	IC ADC 12BIT SAR 38TSSOP	2195750
ADS5121IZHK Texas Instruments	ADC, PROPRIETARY METHOD, 10-BIT,	870

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