AD706 is a dual, low power, bipolar op amp that has the low input bias current of a JFET amplifier, but which offers a significantly lower IB drift over temperature. It utilizes superbeta bipolar input transistors to achieve picoampere input bias currents, and offers improved performance over conventional JFET input amplifiers.
The AD706 is a dual, low‑power bipolar op‑amp that combines the ultra‑low input bias current of a JFET amplifier with the low offset drift of a bipolar device. It provides typical input offset voltage of 100 µV, input bias current as low as 200 pA, and a quiescent supply current of about 0.75 mA per amplifier. The device is internally compensated for unity gain and is available in five performance grades.
Typical applications include low‑frequency active filters, precision instrumentation, and high‑quality integrators for 12‑bit and 14‑bit data‑acquisition systems. The AD706 is offered in an 8‑lead plastic Mini‑DIP and a surface‑mount SOIC package, with commercial (0 °C to +70 °C) and industrial (‑40 °C to +85 °C) temperature options.
| Input Offset Voltage (typ) | 100 µV |
|---|---|
| Input Bias Current (typ, V‑ = 0 V) | 200 pA |
| Quiescent Supply Current (typ) | 0.75 mA |
| Unity‑Gain Bandwidth | 0.8 MHz |
| Supply Voltage Range | +2.0 V to +18 V |
| Temperature Range (industrial grade) | ‑40 °C to +85 °C |
| Package Options | 8‑lead Plastic Mini‑DIP and SOIC |
The typical input bias current is 200 pA when the supply voltage is 0 V, and 250 pA at a 13.5 V supply.
The AD706 draws about 0.75 mA typical quiescent current per amplifier (1.2 mA max).
It is offered in an 8‑lead Plastic Mini‑DIP and a surface‑mount SOIC package.