AD8676 is a 36V, 2.8nV/√Hz dual rail-to-rail output operational amplifier. Its features include very low voltage noise, rail-to-rail output swing, low input bias current, very low offset voltage and drift, high gain, wide bandwidth, etc. It is suitable for precision instrumentation, PLL filters, laser diode control loops, strain gage amplifiers, medical instrumentation, thermocouple amplifiers, etc.
The AD8676 precision operational amplifier offers ultra‑low voltage noise (2.8 nV/√Hz at 1 kHz), rail‑to‑rail output swing, very low input bias current (±2 nA) and low offset voltage (typical 12 µV). It operates from ±5 V to ±15 V and is qualified for an extended industrial temperature range (‑40 °C to +125 °C).
The device is available in 8‑lead MSOP and narrow‑body SOIC packages, both lead‑free. Typical performance includes a 10 MHz gain‑bandwidth product, supply current of 2.5‑3.2 mA, and a power‑supply rejection ratio of about 120 dB. Detailed specifications, pin configurations, and ordering information are provided in the following sections.
| Voltage Noise Density | 2.8 nV/√Hz @ 1 kHz |
|---|---|
| Offset Voltage (typical, B‑grade SOIC) | 12 µV |
| Input Bias Current | ±2 nA |
| Gain Bandwidth Product | 10 MHz |
| Power Supply Rejection Ratio (PSRR) | ≈120 dB (±5 V to ±15 V) |
The AD8676 has a voltage noise density of 2.8 nV/√Hz at 1 kHz.
The input bias current is specified as –2 nA to +2 nA.
The gain‑bandwidth product is 10 MHz.