Data Acquisition - Analog to Digital Converters (ADC)

Part Number	Description / PDF	Quantity
ADS7961SRHBR Texas Instruments	IC ADC 8BIT SAR 32VQFN	0
ADS7822UC/2K5 Texas Instruments	ADS7822 12-BIT, 200KSPS MICRO PO	2469
ADS8505IDWG4 Texas Instruments	IC ADC 16BIT SAR 28SOIC	0
TLC2558CDWG4 Texas Instruments	IC ADC 12BIT SAR 20SOIC	0
TLV1562IDWR Texas Instruments	ADC, PROP METHOD, 10-BIT, 4 CHAN	3000
ADC14155CISQ/NOPB Texas Instruments	IC ADC 14BIT PIPELINED 48WQFN	0
ADS8028IRTJR Texas Instruments	IC ADC 12BIT SAR 20QFN	0
ADS7842E/1K Texas Instruments	IC ADC 12BIT SAR 28SSOP	945
TLC5510IPWR Texas Instruments	TLC5510 8-BIT, 20-MSPS ANALOG-TO	108000
ADS5500IPAP Texas Instruments	IC ADC 14BIT PIPELINED 64HTQFP	213
ADC32J22IRGZT Texas Instruments	ADC32J22 DUAL-CHANNEL, 12-BIT, 5	234
TLV571IDW Texas Instruments	TLV571 8-BIT, 1.25 MSPS SINGLE C	16215
TLC1543QDBG4 Texas Instruments	TLC1543 10-BIT, 38 KSPS ADC SERI	10780
ADS800U/1K Texas Instruments	ADS800 12-BIT, 40 MSPS ADC SE/DI	976
ADS7817PC Texas Instruments	SAR ADC, 12-BIT, SERIAL ACCESS	0
TLC1543QFN Texas Instruments	SAR ADC, 10-BIT, SERIAL ACCESS	7802
ADS7864Y/250G4 Texas Instruments	IC ADC 12BIT SAR 48TQFP	0
ADS7954SRGET Texas Instruments	ADS7954 10 BIT, 1 MSPS, 4 CH, SI	9672
ADS1271IBPW Texas Instruments	IC ADC 24BIT SIGMA-DELTA 16TSSOP	463
ADS122C04IRTET Texas Instruments	IC ADC 24BIT SIGMA-DELTA 16WQFN	8

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