AD7641BSTZ: 18-Bit SAR ADC for High-Precision Data Acquisition Systems | Analog Devices
AD7641BSTZ: High-Performance 18-Bit SAR ADC for Precision Data Acquisition Systems
The AD7641BSTZ by Analog Devices Inc. is a premium 18-bit Successive Approximation Register (SAR) Analog-to-Digital Converter (ADC) engineered for high-accuracy, high-speed data acquisition. This IC is part of the Data Acquisition - ADCs category and excels in applications demanding ultra-precision, low power, and robust performance. Below, we explore its features, technical specifications, and industry-leading applications in detail.
Product Overview
The AD7641BSTZ is a 2 MSPS, 18-bit SAR ADC housed in a compact 48-LQFP package. It features a single differential input with a built-in sample-and-hold (S/H) circuit, ensuring stable signal capture during high-speed conversions. The device operates on dual 2.37V 2.63V analog/digital supplies, making it ideal for low-power embedded systems.
Key highlights include:
- 18-bit resolution for unparalleled measurement accuracy.
- 2 MSPS sampling rate for real-time data acquisition.
- Differential input with excellent common-mode noise rejection.
- Flexible SPI/Parallel/DSP interfaces for seamless system integration.
Detailed Specifications
1. Resolution & Speed
- Resolution: 18 bits (1 LSB accuracy).
- Sampling Rate: 2 MSPS (Mega Samples Per Second).
- Architecture: SAR (Successive Approximation Register).
2. Power & Voltage
- Analog Supply: 2.37V 2.63V.
- Digital Supply: 2.37V 2.63V.
- Power Consumption: <50 mW at 2 MSPS.
3. Input & Reference
- Input Type: Differential (1 channel).
- Reference Voltage: Internal (2.5V) or external (1.2V 2.5V).
4. Interface & Packaging
- Data Interface: SPI (Serial), Parallel, DSP-compatible.
- Package: 48-LQFP (7x7 mm).
5. Environmental Robustness
- Operating Temperature: -40 C to +85 C.
- ESD Protection: >4 kV (Human Body Model).
Applications
The AD7641BSTZ is widely used in:
- Industrial Automation: PLCs, motor control, and sensor interfaces.
- Medical Devices: ECG monitors, ultrasound systems.
- Test & Measurement: Oscilloscopes, spectrum analyzers.
- Communications: Software-defined radios (SDR), base stations.
Why the AD7641BSTZ Stands Out
- Industry-Leading Precision: 18-bit resolution ensures <0.1% error.
- High-Speed Operation: 2 MSPS for dynamic signal capture.
- Low Power: Optimized for battery-powered devices.
- Design Flexibility: Multiple interface options (SPI/Parallel).
- Rugged Design: Operates in extreme temperatures (-40 C to +85 C).
Conclusion
The AD7641BSTZ is a top-tier 18-bit SAR ADC combining speed, accuracy, and versatility. Whether for industrial, medical, or research applications, it delivers unmatched performance. Explore datasheets, design tools, and purchasing options on our website today!
For volume pricing or technical support, contact our sales team.