The AD825 is a low cost, general-purpose high speed JFET amplifier from Analog Devices. The AD825 features a high speed of 41 MHz, -3 dB bandwidth, 125 V/µs slew rate, and 80 ns settling time. The device has a 20 pA input bias current and 10 fA/√Hz noise current, as well as 12 nV/√Hz input voltage noise. The AD825 operates with ±5 V to ±15 V fully specified power supplies, and has a low distortion of -76 dB at 1 MHz. The device also has high output drive capability, can drive unlimited capacitance loads, and has an output current of 50 mA. The AD825 is available in an 8-lead SOIC package.
The AD825 is a general‑purpose, high‑speed JFET amplifier offered by Analog Devices. It operates from ±5 V to ±15 V supplies, provides low input bias current, low noise, and can drive heavy capacitive loads.
The datasheet includes specifications, absolute maximum ratings, pin configurations, performance graphs, application notes such as low‑pass filter design, and ordering information for 8‑lead and 16‑lead SOIC packages.
| Unity Gain Bandwidth | 23‑26 MHz (±15 V supply) |
|---|---|
| Input Bias Current | 15‑40 pA (±15 V supply) |
| Quiescent Supply Current | 6.5‑7.2 mA (±15 V supply) |
| Output Current | 50 mA (±15 V supply) |
| Maximum Supply Voltage | ±18 V |
| Package Options | 8‑lead SOIC (R‑8) and 16‑lead SOIC (R‑16) |
It ranges from 23 MHz (minimum) to 26 MHz (typical) when powered from ±15 V.
The absolute maximum supply voltage is ±18 V.
The device is offered in an 8‑lead SOIC (R‑8) and a 16‑lead SOIC (R‑16) package.