Low Cost, General-Purpose High Speed JFET Amplifier

The AD825 is a superbly optimized operational amplifier for high speed, low cost and dc parameters, making it ideally suited for a broad range of signal conditioning and data acquisition applications. The ac performance, gain, bandwidth, slew rate and drive capability are all very stable over temperature. The AD825 also maintains stable gain under varying load conditions.

The unique input stage has ultralow input bias current and input current noise. Signals that go to either rail on this high performance input do not cause phase reversals at the output. These features make the AD825 a good choice as a buffer for MUX outputs, creating minimal offset and gain errors.

The AD825 is fully specified for operation with dual ±5 V and ±15 V supplies. This power supply flexibility, and the low supply current of 6.5 mA with excellent ac characteristics under all supply conditions, makes the AD825 well suited for many demanding applications.

* High Speed

41 MHz, -3 dB bandwidth

125 V/µs slew rate

80 ns settling time

* Input bias current of 20 pA and noise

current of 10 fA/√Hz

* Fully specified power supplies: ±5 V to ±15V

* Input voltage noise of 12 nV/√Hz

* Low distortion: -76 dB at 1 MHz

* High output drive capability

Drives unlimited capacitance load

50 mA min output current

* No phase reversal when input is

at rail

* Available in 8-lead SOIC