The AD780 is an ultrahigh precision band gap reference voltage that provides a 2.5 V or 3.0 V output from inputs between 4.0 V and 36 V. Low initial error and temperature drift combined with low output noise and the ability to drive any value of capacitance make the AD780 ideal for a wide range of applications.
The AD780 is an ultra‑high precision band‑gap reference that provides a programmable 2.5 V or 3.0 V output from supply voltages between 4 V and 36 V. It features laser‑trimmed accuracy, ultralow drift (3 ppm/°C), low output noise (4 µV p‑p from 0.1 Hz to 10 Hz) and a low quiescent current (≈1 mA). The device can operate in series or shunt mode, allowing both positive and negative output voltages without external components.
Typical applications include high‑resolution ADCs, DACs, and any precision reference need where stability, low noise and temperature monitoring are required. The AD780 also offers a temperature‑output pin that can be used as a transducer, providing a voltage that varies linearly with temperature.
| Output Voltage (2.5 V) – Typical | 2.505 V |
|---|---|
| Temperature Sensitivity (TEMP pin) | 1.9 mV/°C |
| Output Resistance | 3 kΩ |
| Short‑Circuit Current to Ground | 30 mA |
The AD780 can be programmed to output either 2.5 V or 3.0 V.
The temperature output pin varies about 2 mV per degree Celsius.