Overview
The AD780AN, produced by Analog Devices Inc., is an ultrahigh precision band gap reference voltage component. 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, low temperature drift, and 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 | Min | Typ | Max |
|---|---|---|---|
| Output Voltage (2.5 V) | 2.495 V | 2.5 V | 2.505 V |
| Output Voltage (3.0 V) | 2.995 V | 3.0 V | 3.005 V |
| Temperature Drift (-40°C to +85°C) | - | - | 3 ppm/°C |
| Line Regulation (2.5 V Output, 4 V ≤ +VIN ≤ 36 V) | - | - | 10 µV/V |
| Line Regulation (3.0 V Output, 4.5 V ≤ +VIN ≤ 36 V) | - | - | 10 µV/V |
| Load Regulation, Series Mode | - | - | 10 µV/mA |
| Quiescent Current | - | - | 1 mA |
| Noise (Wideband Spectral Noise Density) | - | - | 100 nV/√Hz |
| Operating Temperature Range | -40°C | - | +85°C |
Key Features
- Pin-programmable 2.5 V or 3.0 V output
- Ultralow drift: 3 ppm/°C max
- High accuracy: 2.5 V or 3.0 V ±1 mV max
- Low noise: 100 nV/√Hz
- Noise reduction capability
- Low quiescent current: 1 mA max
- Output trim capability
- Plug-in upgrade for present references
- Temperature output pin for temperature transducer applications
- Series or shunt mode operation (±2.5 V, ±3.0 V)
- Stable under all load conditions with a 1 µF bypass capacitor
Applications
- High-resolution analog-to-digital converters (ADCs) and digital-to-analog converters (DACs)
- General-purpose precision reference applications
- Temperature transducer applications
- High-performance reference applications requiring low noise and high accuracy
Q & A
- What are the output voltage options for the AD780AN?
The AD780AN provides pin-programmable 2.5 V or 3.0 V output voltages.
- What is the input voltage range for the AD780AN?
The input voltage range is between 4.0 V and 36 V.
- What is the temperature drift specification for the AD780AN?
The temperature drift is 3 ppm/°C max from -40°C to +85°C.
- Can the AD780AN be used in series or shunt mode?
- What is the quiescent current of the AD780AN?
The quiescent current is 1 mA max.
- Does the AD780AN have noise reduction capability?
- Can the AD780AN be used as a temperature transducer?
- What are the package options for the AD780AN?
The AD780AN is available in 8-Lead PDIP and 8-Lead SOIC packages.
- Is the AD780AN stable under all load conditions?
- What is the operating temperature range for the AD780AN?
The operating temperature range is from -40°C to +85°C.
