AD745

a Ultralow Noise, High Speed, BiFET Op Amp AD745 INPUT NOISE VOLTAGE – nV/ Hz OPEN-LOOP GAIN – dB PHASE MARGIN – Degrees FEATURES ULTRALOW NOISE PERFORMANCE 2.9 nV/ͱHz at 10 kHz 0.38 ␮V p-p, 0.1 Hz to 10 Hz 6.9 fA/ͱHz Current Noise at 1 kHz EXCELLENT AC PERFORMANCE 12.5 V/␮s Slew Rate 20 MHz Gain Bandwidth Product THD = 0.0002% @ 1 kHz Internally Compensated for Gains of +5 (or –4) or Greater EXCELLENT DC PERFORMANCE 0.5 mV Max Offset Voltage 250 pA Max Input Bias Current 2000 V/mV Min Open Loop Gain Available in Tape and Reel in Accordance with EIA-481A Standard APPLICATIONS Sonar Photodiode and IR Detector Amplifiers Accelerometers Low Noise Preamplifiers High Performance Audio PRODUCT DESCRIPTION The AD745 is an ultralow noise, high-speed, FET input operational amplifier. It offers both the ultralow voltage noise and high speed generally associated with bipolar input op amps and the very low input currents of FET input devices. Its 20 MHz bandwidth and 12.5 V/µs slew rate makes the AD745 an ideal 1000 RSOURCE EO 100 RSOURCE OP37 AND RESISTOR AD745 AND RESISTOR OR OP37 AND RESISTOR 10 AD745 AND RESISTOR 1 100 RESISTOR NOISE ONLY 1k 10k 100k SOURCE RESISTANCE – ⍀ 1M Figure 1. 10M REV. D Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. No license is granted by i...