Overview
The AD780BNZ, 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 designed to offer low initial error and temperature drift, combined with low output noise, making it ideal for enhancing the performance of high-resolution analog-to-digital converters (ADCs) and digital-to-analog converters (DACs), as well as 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 (-40°C to +85°C) | ppm/°C | 3 | ||
| Line Regulation (2.5 V Output, 4 V ≤ +VIN ≤ 36 V) | µV/V | 10 | ||
| Line Regulation (3.0 V Output, 4.5 V ≤ +VIN ≤ 36 V) | µV/V | 10 | ||
| Quiescent Current | mA | 1 | ||
| Noise (Wideband Spectral Noise Density) | nV/√Hz | 100 | ||
| Operating Temperature Range | °C | -40 | 85 | |
| Input Voltage Range | V | 4 | 36 |
Key Features
- Pin-programmable 2.5 V or 3.0 V output
- Ultralow drift: 3 ppm/°C max
- High accuracy: ±1 mV max for both output voltages
- Low noise: 100 nV/√Hz wideband spectral noise density
- Low quiescent current: 1 mA max
- Output trim capability for fine-tuning
- Temperature output pin for monitoring system ambient temperature
- Series or shunt mode operation (±2.5 V, ±3.0 V)
- No region of possible instability; stable under all load conditions with a 1 µF bypass capacitor
Applications
The AD780BNZ is suitable for a variety of high-performance applications, including:
- Enhancing the performance of high-resolution analog-to-digital converters (ADCs) and digital-to-analog converters (DACs)
- General-purpose precision reference applications
- Systems requiring stable and accurate voltage references
- Temperature monitoring and control systems due to its temperature output pin
Q & A
- What are the output voltage options for the AD780BNZ?
The AD780BNZ provides pin-programmable 2.5 V or 3.0 V output voltages. - What is the input voltage range for the AD780BNZ?
The input voltage range is between 4.0 V and 36 V. - What is the temperature drift specification for the AD780BNZ?
The temperature drift is specified as 3 ppm/°C max from -40°C to +85°C. - How much quiescent current does the AD780BNZ consume?
The quiescent current is 1 mA max. - What is the noise performance of the AD780BNZ?
The wideband spectral noise density is typically 100 nV/√Hz. - Can the AD780BNZ be used in series or shunt mode?
Yes, it can be used in both series and shunt mode, allowing for positive or negative output voltages without external components. - Is the AD780BNZ stable under all load conditions?
Yes, it is stable under all load conditions when a 1 µF bypass capacitor is used on the supply. - What is the purpose of the temperature output pin?
The temperature output pin provides an output voltage that varies linearly with temperature, allowing it to be used as a temperature transducer. - What are the package options for the AD780BNZ?
The AD780BNZ is available in PDIP and SOIC packages. - What is the operating temperature range for the AD780BNZ?
The operating temperature range is from -40°C to +85°C.
