The AD8675 is a 36V precision operational amplifier with features including very low voltage noise, rail-to-rail output swing, low input bias current, low offset voltage and drift, high gain, and wide bandwidth. It is suitable for applications such as precision instrumentation, PLL filters, laser diode control loops, strain gage amplifiers, medical instrumentation, and thermocouple amplifiers.
The AD8675 precision operational amplifier offers very low voltage noise (2.8 nV/√Hz), rail‑to‑rail output swing, low input bias current (2 nA max), ultra‑low offset voltage (75 pV typical) and drift (0.6 pV/°C), a high open‑loop gain of 120 dB, and a wide 10 MHz bandwidth. It operates from +5 V to +18 V, making it suitable for low‑power, space‑critical designs.
Typical applications include precision instrumentation, PLL filters, laser‑diode control loops, strain‑gage amplifiers, medical instrumentation, and thermocouple amplifiers. The device is offered in RoHS‑compliant 8‑lead MSOP and narrow‑body SOIC packages, with options for tape‑and‑reel or standard shipping.
| Supply Voltage (max) | +18 V |
|---|---|
| Operating Supply Range | +5 V to +18 V |
| Input Offset Voltage (typical) | 75 pV |
| Input Bias Current (max) | 2 nA |
| Gain Bandwidth Product | 10 MHz |
| Voltage Noise Density (1 kHz) | 2.8 nV/√Hz |
| Power Supply Rejection Ratio | 120‑140 dB |
| Slew Rate | 25 V/µs |
| Input Voltage Range | -3.5 V to +3.5 V |
The AD8675 operates from +5 V to +18 V.
The typical gain‑bandwidth product is 10 MHz.
Typical input offset voltage is 75 pV.
The maximum input bias current is 2 nA.