Data Acquisition - Analog to Digital Converters (ADC)

Part Number	Description / PDF	Quantity
ADS8321E/2K5 Texas Instruments	ADS8321 16-BIT, HIGH-SPEED, MICR	41719
ADC12D800RFIUT Texas Instruments	IC ADC 12BIT FOLD INTERP 292BGA	0
ADS8341E/2K5 Texas Instruments	IC ADC 16BIT SAR 16SSOP	0
ADC108S102CIMT Texas Instruments	SAR ADC, 10-BIT, SERIAL ACCESS	33700
ADS1148IRHBR Texas Instruments	IC ADC 16BIT SIGMA-DELTA 32VQFN	1581
ADS7040IDCUR Texas Instruments	IC ADC 8BIT SAR 8VSSOP	1262
ADS5474IPFPRG4 Texas Instruments	IC ADC 14BIT PIPELINED 80HTQFP	0
THS1401IPFB Texas Instruments	THS1401 14-BIT, 1-MSPS ANALOG-TO	14569
ADS7138IRTET Texas Instruments	12B 140KSPS SCH SAR ADC	248
ADS112C04IRTER Texas Instruments	IC ADC 16BIT SIGMA-DELTA 16WQFN	2189
ADCS7476AIMFE/NOPB Texas Instruments	IC ADC 12BIT SAR SOT23-6	661
TLV0831CDR Texas Instruments	TLV0831 8-BIT 49 KSPS ADC SERIAL	14550
TLV2541IDR Texas Instruments	TLV2541 12-BIT, 200 KSPS ADC, SE	34844
AMC1203DW Texas Instruments	AMC1203 1-BIT, 10MHZ, 2ND-ORDER,	105
TLV0834IN Texas Instruments	TLV0834 8-BIT 41 KSPS ADC SERIAL	26841
ADC128D818CIMTX/NOPB Texas Instruments	IC ADC 12BIT SIGMA-DELTA 16TSSOP	5596
ADS8568SPMR Texas Instruments	IC ADC 16BIT SAR 64LQFP	0
ADS8422IBPFBR Texas Instruments	IC ADC 16BIT SAR 48TQFP	0
ADS7958SDBT Texas Instruments	IC ADC 8BIT SAR 30TSSOP	30
THS1040IPW Texas Instruments	ADC, PROPRIETARY METHOD, 10-BIT	44336

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