OP747ARZ

Instrumentation, Op Amps, Buffer Amps Overview

The OP747ARZ is a quad precision micropower single-supply operational amplifier manufactured by Analog Devices. It features rail-to-rail output capability and operates on supply voltages ranging from 3 V to 30 V for single-supply or ±1.5 V to ±15 V for dual-supply configurations. Key electrical specifications include a maximum input offset voltage of 300 μV, an input bias current of 10 nA, and a supply current of 320 μA per amplifier. The device offers a gain-bandwidth product of 0.7 MHz, a slew rate of 0.2 V/μs, and a power supply rejection ratio of 120 dB. It is housed in a 14-lead SOIC package and functions within an industrial temperature range of -40 °C to +85 °C.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Micropower operation with low supply current consumption suitable for battery-powered systems
• Rail-to-rail output stage capable of swinging to within 1 mV of the supply rails
• No phase reversal when inputs are driven beyond the common-mode voltage range
• Built-in 500 Ω internal series resistors protect inputs against overvoltage conditions

Instrumentation, Op Amps, Buffer Amps Applications

• Current sensing using shunt resistors
• Line or battery-powered instrumentation
• Remote sensor signal conditioning
• Precision active filters

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify that the specific part number matches the required package type, as the OP747 is available in both TSSOP and SOIC variants. Confirm RoHS compliance status, as indicated by the 'Z' suffix in the ordering guide. Ensure the procurement channel provides documentation verifying the extended industrial temperature rating of -40 °C to +85 °C. Cross-reference the manufacturer's official ordering guide to confirm availability of tape and reel options if automated assembly is required.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when high precision is required alongside low power consumption in single-supply environments. The quad configuration allows multiple amplifiers to be integrated into a single footprint, reducing board space compared to individual units. Consider the 0.7 MHz bandwidth and 0.2 V/μs slew rate for applications requiring moderate speed but high DC accuracy. The rail-to-rail output simplifies interface design with ADCs operating at lower voltage levels.

Instrumentation, Op Amps, Buffer Amps Part Context

The OP747 belongs to the OP777/OP727/OP747 family of precision micropower amplifiers. While the OP777 is a single-channel device and the OP727 is a dual-channel version, the OP747 integrates four independent amplifiers in one package. This family utilizes a bipolar PNP input stage coupled with a CMOS output stage to achieve high breakdown voltage and low noise characteristics.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

The datasheet identifies the LT1013 as pin-compatible with the OP727, not the OP747. No direct quad-channel replacement is explicitly listed in the provided text. Designers should verify pinout compatibility and electrical parameter overlaps before substituting with other quad op-amps.