Overview
The AD780BRZ, produced by Analog Devices Inc., is an ultrahigh precision band gap reference voltage. It provides a pin-programmable 2.5 V or 3.0 V output from input voltages ranging between 4.0 V and 36 V. This component is renowned for its low initial error, low temperature drift, and low output noise, making it an ideal choice for enhancing the performance of high-resolution analog-to-digital converters (ADCs) and digital-to-analog converters (DACs), as well as for general-purpose precision reference applications.
Key Specifications
| Parameter | Unit | Min | Typ | Max |
|---|---|---|---|---|
| Output Voltage (2.5 V) | V | 2.495 | 2.5 | 2.505 |
| Output Voltage (3.0 V) | V | 2.995 | 3.0 | 3.005 |
| Temperature Drift | ppm/°C | - | - | 3 (−40°C to +85°C) |
| Line Regulation (2.5 V Output) | µV/V | - | - | 10 |
| Line Regulation (3.0 V Output) | µV/V | - | - | 10 |
| Load Regulation (Series Mode) | - | - | - | - |
| Output Noise (Wideband Spectral Noise Density) | nV/√Hz | - | 100 | - |
| Quiescent Current | mA | - | - | 1 |
| Operating Temperature Range | °C | −40 | - | +85 |
| Package Type | - | - | SOIC-8 | - |
Key Features
- Pin Programmable Output: The AD780BRZ offers a pin-programmable 2.5 V or 3.0 V output.
- High Accuracy: The component boasts high accuracy with output voltages of ±1 mV max for both 2.5 V and 3.0 V outputs.
- Low Noise: It features extremely low noise, with a wideband spectral noise density of typically 100 nV/√Hz.
- Temperature Output Pin: The temperature output pin allows the AD780 to be configured as a temperature transducer while providing a stable output reference.
- Low Quiescent Current: The device has a low quiescent current of 1 mA max.
- Series or Shunt Mode Operation: It can operate in series or shunt mode, allowing positive or negative output voltages without external components.
- Output Trim Capability: An optional fine-trim connection is provided for applications requiring even higher accuracy.
Applications
The AD780BRZ is suitable for a variety of high-performance applications, including:
- High-Resolution ADCs and DACs: Enhances the performance of analog-to-digital converters and digital-to-analog converters.
- General-Purpose Precision Reference: Ideal for any general-purpose precision reference application.
- Temperature Transducer: Can be configured as a temperature transducer while providing a stable output reference.
Q & A
- What are the output voltage options for the AD780BRZ?
The AD780BRZ provides pin-programmable 2.5 V or 3.0 V output. - What is the temperature drift of the AD780BRZ?
The temperature drift is 3 ppm/°C max from −40°C to +85°C. - How much noise does the AD780BRZ produce?
The wideband spectral noise density is typically 100 nV/√Hz. - What is the quiescent current of the AD780BRZ?
The quiescent current is 1 mA max. - Can the AD780BRZ operate in series or shunt mode?
Yes, it can operate in both series and shunt mode. - What is the operating temperature range of the AD780BRZ?
The operating temperature range is from −40°C to +85°C. - What package types are available for the AD780BRZ?
The AD780BRZ is available in an SOIC-8 package. - Can the AD780BRZ be used as a temperature transducer?
Yes, it can be configured as a temperature transducer while providing a stable output reference. - What is the maximum load current the AD780BRZ can handle?
The AD780BRZ can source or sink up to 10 mA. - Is the AD780BRZ stable under all load conditions?
Yes, it is stable under all load conditions when a 1 µF bypass capacitor is used on the supply.
