AD780BRZ

VOLTAGE REFERENCE

AD780BRZ – Ultra-Precise ±2.5V/±3V Programmable Voltage Reference – Analog Devices

The AD780BRZ from Analog Devices is a high-accuracy voltage reference IC engineered for precision measurement systems. This series/shunt programmable reference delivers exceptional stability (±0.04% tolerance) and ultra-low noise (4µVp-p), ensuring reliable performance in critical analog circuits. PCX supplies this active-status component with guaranteed authenticity and same-day shipping.

Key Features

• Output Voltage: Programmable ±2.5V or ±3V (min/fixed)
• Tolerance: ±0.04% maximum for unmatched accuracy
• Temperature Coefficient: 3ppm/°C for thermal stability
• Low Noise: 4µVp-p (0.1Hz to 10Hz)
• Wide Input Range: 4V to 36V operational flexibility
• Current Output: 10mA drive capability

Technical Specifications

• Reference Type: Series or Shunt configuration
• Operating Temperature: Industrial-grade -40°C to +85°C
• Supply Current: 1mA typical consumption
• Package: 8-SOIC (3.90mm width) surface-mount
• Base Product Family: AD780 series voltage references

Typical Applications

• Precision data acquisition systems
• Industrial process control instrumentation
• Medical diagnostic equipment
• High-resolution A/D and D/A converters
• Automotive sensor calibration circuits

About Analog Devices

Analog Devices Inc. (ADI) is a global leader in high-performance analog semiconductors, renowned for innovation in signal processing and power management technologies. With over 50 years of industry expertise, ADI’s components set benchmarks for precision, reliability, and energy efficiency across aerospace, automotive, and industrial markets.

ADI maintains rigorous quality certifications (including ISO 9001 and automotive IATF 16949), ensuring consistent performance in mission-critical applications. Their voltage reference portfolio, including the AD780 series, is trusted by design engineers worldwide for uncompromising accuracy and long-term stability.

About Voltage Reference ICs

Voltage references generate stable DC voltages unaffected by temperature fluctuations, supply variations, or load changes. They serve as precision “anchors” in analog systems, converting real-world signals into accurate digital representations. Without high-quality references, measurement accuracy in sensors, converters, and control systems degrades significantly.

Series references (like the AD780BRZ) offer low dropout and high current drive, ideal for active circuitry. Shunt references provide simple voltage clamping. Both types are essential in data converters, power supplies, and calibration equipment where sub-millivolt precision determines system performance.

Packaging Options

Available in manufacturer-sealed Tube packaging for automated assembly. PCX provides bulk pricing for production runs and handles ESD-safe shipping globally.

Frequently Asked Questions

Q: What distinguishes series vs. shunt mode in this voltage reference?
A: In series mode, the AD780BRZ acts as a regulated output buffer. Shunt mode allows simple two-terminal voltage clamping with external resistors.

Q: Is the output voltage factory-set or user-configurable?
A: It’s programmable via external resistors. The datasheet provides calculation formulas for custom voltages beyond ±2.5V/±3V.

Q: How does the 3ppm/°C tempco impact real-world designs?
A: This ultra-low drift ensures less than 0.3mV variation across -40°C to +85°C, eliminating temperature recalibration in most systems.

Q: Can this IC replace older AD780 variants?
A: Yes, the AD780BRZ is pin-compatible with earlier versions but offers improved tolerance (±0.04% vs. ±0.08%).

Q: What PCB precautions ensure optimal noise performance?
A: Use star grounding, bypass capacitors near V_IN, and isolate from digital noise sources. See layout guidelines in the datasheet.

Q: Does PCX provide technical support for integration issues?
A: Yes! Our engineers assist with schematic reviews and troubleshooting. Access the datasheet here or contact our support team.

Disclaimer

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

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