Analog Devices AD704SE/883B

Non-RoHS Compliant EAR99 AD704 Tube op amp amplifier circuit 8.89mm 0.0007muA 15V 800kHz

Operational Amplifier, 4 Func, 250uV Offset-Max, BIPolar

Ic,Operational Amplifier,Quad,Bipolar,Llcc,20Pin,Ceramic

The AD704 is a quad, low power bipolar op amp that has the low input bias current of a BiFET amplifier and offers a signifi-cantly lower IB drift over temperature. It uses superbeta bipolar input transistors to achieve picoampere input bias current levels (similar to FET input amplifiers at room temperature), while its IB typically increases only by 5× at 125°C (unlike a BiFET amp, for which IB doubles every 10°C, resulting in a 1000× increase at 125°C). In addition, the AD704 achieves 150 µV offset voltage and the low noise characteristics of a precision bipolar input op amp. Because it has only 1/20 the input bias current of an OP07, the AD704 does not require the commonly used balancing resistor. Furthermore, the current noise is 1/5 that of the OP07, which makes the AD704 usable with much higher source impedances. At 1/6 the supply current (per amplifier) of the OP07, the AD704 is better suited for today’s higher density circuit boards and battery-powered applications. The AD704 is an excellent choice for use in low frequency active filters in 12- and 14-bit data acquisition systems, in precision instrumentation, and as a high quality integrator. The AD704 is internally compensated for unity gain stability. The AD704J is rated over the commercial temperature range of 0°C to 70°C. The AD704A is rated over the industrial temperature of -40°C to +85°C. The AD704S is rated over the military temperature range of -55°C to +125°C, processed to MIL-STD-883B. Applications Industrial/process controls Weigh scales ECG/EKG instrumentation Low frequency active filters