Adc, 24Bit, 256Ksps, Lqfp-64; Resolution (Bits):24Bit; Sampling Rate:256Ksps; Input Channel Type:Differential, Pseudo Differential; Data Interface:3 Wire, 4 Wire, Serial, Spi; Supply Voltage Type:Single; Supply Voltage Min:2V Rohs Compliant: Yes |Analog Devices AD7768BSTZ

AD7768BSTZ – 24-Bit, 256KSPS, 8-Channel Sigma-Delta ADC – Analog Devices

This high-precision 24-bit analog-to-digital converter (ADC) from Analog Devices delivers exceptional signal accuracy for demanding measurement applications. Engineered for low-noise performance and simultaneous multi-channel sampling, the AD7768BSTZ enables reliable data acquisition in industrial and instrumentation systems. PCX ensures genuine Analog Devices components with rapid shipping and dedicated technical support.

Key Features

• 24-bit resolution for ultra-precise signal conversion
• 256kSPS sampling rate per channel
• 8 simultaneous sampling channels with differential/pseudo-differential inputs
• Wide voltage range: Analog 2V-5.5V / Digital 2V-3.6V
• SPI/DSP-compatible interface for flexible system integration
• Industrial temperature range: -40°C to +105°C
• Sigma-delta architecture with external reference support

Technical Specifications

Housed in a compact 64-LQFP (10x10mm) surface-mount package, this ADC features eight independent sigma-delta converters with simultaneous sampling capability. The device supports both differential and pseudo-differential input configurations across all channels. Communication occurs via a versatile 3-wire/4-wire serial interface (SPI/DSP compatible), while its dual-supply design (separate analog/digital voltages) minimizes noise interference. RoHS compliance ensures environmental safety standards are met.

Typical Applications

• Industrial process control systems
• Precision test and measurement equipment
• Medical instrumentation and monitoring devices
• Power quality analyzers and energy metering
• Vibration analysis and condition monitoring

About Analog Devices

Analog Devices Inc. (ADI) stands at the forefront of high-performance semiconductor technology, with over 50 years of innovation in data conversion and signal processing. Their components are renowned for precision engineering, exceptional reliability, and cutting-edge performance in mission-critical applications across aerospace, industrial, and medical sectors.

ADI’s rigorous quality control and continuous R&D investment make their products the preferred choice for engineers designing next-generation systems. Their leadership in mixed-signal IC development ensures solutions that consistently push the boundaries of accuracy and power efficiency.

About Sigma-Delta ADCs

Sigma-delta analog-to-digital converters excel in high-resolution applications requiring minimal noise and excellent linearity. By oversampling input signals and using noise-shaping techniques, they achieve superior accuracy compared to other ADC architectures, particularly in low-frequency measurement scenarios.

These converters are indispensable in precision instrumentation where signal integrity is paramount, including audio processing, sensor interfaces, and industrial control. Their inherent resistance to quantization errors makes them ideal for systems demanding 16-bit resolution or higher across challenging environmental conditions.

Packaging Information

Available in industry-standard tray packaging for automated assembly processes. Contact PCX for reel packaging options and custom quantity requirements.

Frequently Asked Questions

Question: What is the advantage of simultaneous sampling?
Answer: Simultaneous sampling captures all 8 input channels at precisely the same instant, critical for phase-sensitive measurements in power monitoring and multi-sensor systems.

Question: Can this ADC operate from a single power supply?
Answer: Yes, the analog section accepts 2-5.5V while the digital interface requires 2-3.6V, enabling flexible single-supply or split-rail configurations.

Question: Is external reference voltage mandatory?
Answer: Yes, the AD7768BSTZ requires an external voltage reference for optimal performance and accuracy customization.

Question: What distinguishes sigma-delta from SAR ADCs?
Answer: Sigma-delta converters prioritize resolution over speed, using oversampling for noise reduction, while SAR (Successive Approximation) ADCs offer faster conversion at lower resolutions.

Question: Does PCX provide design support for this ADC?
Answer: Yes, our engineering team offers technical guidance for integration challenges. Access the full datasheet on PCXCo.com for implementation resources.

Question: How does pseudo-differential input differ from fully differential?
Answer: Pseudo-differential inputs reference a common ground, while fully differential pairs measure voltage between two floating signals – the AD7768BSTZ supports both configurations.

Product images are representational only. Refer to datasheets for exact specifications.

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