AD744JRZ

AD744 is a high-precision, fast settling JFET input operational amplifier. JRZ stands for 8-lead plastic dual in-line through-hole package, supplied in tube packaging for laboratory circuit debugging and industrial instrument assembly.

This monolithic JFET input op amp combines ultra-low input bias current, high input impedance and rapid transient response, which is widely applied in precision analog signal conditioning circuits. It supports dual bipolar supply voltages ranging from ±5 V to ±18 V.

The maximum input bias current is 25 pA at room temperature, bringing negligible loading effect to high-impedance signal sources such as piezoelectric sensors and resistive bridge transducers. The maximum input offset voltage is 0.5 mV, accompanied by low temperature drift to maintain consistent DC precision during temperature variation.

The unity-gain bandwidth reaches 1 MHz, and fast settling performance ensures stable output quickly after signal step changes. The device features low total harmonic distortion and low wideband noise, suitable for amplifying faint analog signals without obvious waveform distortion. Built-in internal frequency compensation allows stable operation under all closed-loop gain configurations without external compensation components.

High common-mode rejection ratio and power supply rejection ratio effectively restrain power grid interference and common-mode noise in complex industrial environments. The output stage can drive resistive loads steadily and maintain excellent linearity over the full output swing range.

Encapsulated in standard 8-pin PDIP through-hole plastic package, easy for manual soldering and breadboard circuit construction. Moisture Sensitivity Level is MSL1, no time limitation for reflow soldering after unpacking vacuum packaging. Tube delivery mode is adopted to meet the demands of prototype development and small-batch instrument production.

Commercial operating temperature range extends from 0 °C to +70 °C, running reliably inside desktop test instruments, panel measuring meters and indoor industrial control equipment under mild temperature conditions. Produced with lead-free processes, the component complies with RoHS environmental requirements. The integrated single-chip structure simplifies the design of high-impedance signal preamplifier circuits and reduces peripheral device quantity.

High impedance sensor signal amplification and buffer circuits

Precision integrator, sample-and-hold analog modules

Laboratory low-level voltage measurement instruments

Industrial bridge transducer preamplifier units

Audio front-end signal conditioning and filtering circuits