| Image | Part Number | Description / PDF | Quantity | Rfq |
|---|---|---|---|---|
 |
Burr-Brown (Texas Instruments) |
SAR ADC, 12-BIT, PARALLEL ACCESS |
0 |
|
 |
Burr-Brown (Texas Instruments) |
SAR ADC, 12-BIT, PARALLEL ACCESS |
1311 |
|
 |
Burr-Brown (Texas Instruments) |
ADS7804 12-BIT 10US SAMPLING CMO |
3575 |
|
 |
Burr-Brown (Texas Instruments) |
SAR ADC, 12-BIT, PARALLEL ACCESS |
22 |
|
 |
Burr-Brown (Texas Instruments) |
ADS823 10-BIT, 60-MSPS ANALOG-TO |
45 |
|
 |
Burr-Brown (Texas Instruments) |
SAR ADC, 16-BIT, SERIAL/PARALLEL |
18301 |
|
 |
Burr-Brown (Texas Instruments) |
SAR ADC, 12-BIT, PARALLEL ACCESS |
30832 |
|
 |
Burr-Brown (Texas Instruments) |
SAR ADC, 12-BIT, SERIAL ACCESS |
100 |
|
 |
Burr-Brown (Texas Instruments) |
SAR ADC, 12-BIT, SERIAL ACCESS |
34639 |
|
 |
Burr-Brown (Texas Instruments) |
ADS901 10-BIT, 20-MSPS ANALOG-TO |
22488 |
|
 |
Burr-Brown (Texas Instruments) |
SAR ADC, 12-BIT, SERIAL/PARALLEL |
132 |
|
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.
| 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 |
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.
| 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 |
| 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 |
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
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