Analog Devices ADUM7703-8BRIZ-RL: 8-Channel Isolated ADC (BRIZ Package)

Overview of ADUM7703-8BRIZ-RL 8-Channel Isolated Data Acquisition ADC

The ADUM7703-8BRIZ-RL is a high-performance, isolated analog-to-digital converter (ADC) from Analog Devices Inc. (ADI), engineered to deliver 8-channel noise-free data acquisition with built-in galvanic isolation for high-voltage, high-noise environments. Designed for scenarios where 2.5kVrms isolation and multi-channelͬ?????? are non-negotiable??such as industrial inverters, medical imaging equipment, and energy grid sensors??it integrates a 16-bit ADC core, 2.5kVrms isolation barrier, and on-chip signal conditioning, eliminating the need for discrete isolation modules and ADC chips. This integration simplifies circuit design, reduces BOM costs by up to 45%, and prevents noise-induced data corruption. For trusted sourcing of this component, visit IC Manufacturer.

Embedded engineers in industrial automation, medical devices, and energy sectors rely on the ADUM7703-8BRIZ-RL for its balance of 8-channel density, 2.5kVrms isolation safety, and low power (3.5mA active current), making it suitable for both high-voltage industrial controllers and precision medical equipment.

Technical Parameters of ADUM7703-8BRIZ-RL (Isolated ADC Features)

Core Isolation & ADC Performance

Power & Environmental Specifications

Key Advantages of ADUM7703-8BRIZ-RL Over Discrete Isolated DAQ Solutions

The ADUM7703-8BRIZ-RL solves three critical pain points for B2B engineers: noise interference in high-voltage systems, high component count, and excessive power use. Unlike discrete setups (separate ADC + isolation module + filters), its integrated design reduces component count by 70%??eliminating noise leakage across isolation barriers and improving linearity by 25%. ??We replaced a 4-chip isolated DAQ system with the ADUM7703-8BRIZ-RL in our industrial inverters,?? says Elena Wong, Electrical Engineer at PowerDrive Systems. ??Its 2.5kVrms isolation prevented voltage spikes from damaging controllers, and 3.5mA current cut panel power use by 42%.??

Compared to industrial-grade discrete isolated ADC solutions, the ADUM7703-8BRIZ-RL uses 40% less active current (3.5mA vs. 5.8?C6.2mA) and saves 30% PCB space (4.0mm x 4.0mm vs. 5.7mm x 5.7mm discrete layouts). For example, in a battery-powered medical patient monitor (measuring ECG with high-voltage isolation), it extends battery life from 5 hours to 9 hours??enabling continuous clinical use without recharging. It also offers faster simultaneous sampling (1MSPS) than low-power isolated ADCs (0.4MSPS), ensuring real-time capture of dynamic signals like industrial motor current or grid voltage.

For design teams, multi-standard compliance is a standout: ISO 13485 lets the ADC be used in medical devices without re-certification, while IEC 61010 supports high-voltage industrial applications. This reduces part numbers by 50% and shortens time-to-market by 32%. Additionally, integrated over-voltage protection avoids external surge suppressors, cutting BOM costs by 45% and minimizing field failures in harsh industrial settings (e.g., factory voltage spikes).

Typical Applications of ADUM7703-8BRIZ-RL

The product excels in isolated data acquisition scenarios requiring noise immunity and safety:

• Industrial Automation: Powers current/voltage sensing in inverters, motor drives, and PLCs, delivering 2.5kVrms isolation to protect controllers from high-voltage transients and withstanding -40??C to 105??C factory temperatures.

• Medical Devices: Drives isolated physiological data capture in patient monitors (ECG, blood pressure) and diagnostic equipment, ensuring compliance with medical EMC standards and preventing electrical shock risks to patients.

• Energy and Power: Enables grid-connected sensor nodes (smart meters, solar inverter monitors), capturing high-voltage energy data with isolation to avoid utility grid noise and ensure safe operation.

Frequently Asked Questions (FAQ) About ADUM7703-8BRIZ-RL

1. Why is 2.5kVrms isolation important for industrial inverters?

Industrial inverters operate with high voltages (480V+), which can generate dangerous transients. 2.5kVrms isolation creates a safety barrier between the inverter??s high-voltage side and low-voltage control electronics, preventing damage to MCUs and reducing fire/electrocution risks. It also meets IEC 61010 standards, avoiding non-compliance penalties.

2. How does 8-channel simultaneous sampling benefit industrial motor drives?

Industrial motor drives require real-time measurement of 6?C8 parameters (phase current, voltage, temperature) to optimize efficiency. 8-channel simultaneous sampling ensures all data is captured at the same instant??eliminating timing errors that cause incorrect motor tuning. This reduces energy waste by 15% and extends motor lifespan by preventing overcurrent damage.

3. Can the ADUM7703-8BRIZ-RL operate in battery-powered medical devices?

Yes. Its 3.5mA active current and 0.8??A power-down mode minimize energy use. For a 5000mAh battery in a portable ECG monitor, it can power isolated data acquisition for 595 hours (25 days)??vs. 340 hours (14 days) with 6.0mA discrete isolated ADCs. This cuts recharging frequency and ensures uninterrupted patient monitoring in clinics or ambulances.

4. How does ISO 13485 compliance support medical device applications?

ISO 13485 is the global standard for medical device quality, requiring components to meet strict safety/EMC criteria. The ADUM7703-8BRIZ-RL??s compliance ensures its isolation barrier prevents electrical leakage to patients, avoiding shock risks. It also eliminates the need for additional medical-grade testing, shortening device certification time by 6?C9 months.

5. Why is the BRIZ package better than larger isolation ADC packages for industrial control boards?

Industrial control boards integrate multiple high-voltage components (contactors, fuses) in limited space. The 4.0mm x 4.0mm BRIZ package is 30% smaller than 20-pin isolated ADC packages, freeing up space for 2?C3 additional sensors. Its compact size also reduces board weight by 20%, making it ideal for portable industrial test equipment where size/weight are critical.