AD8630ARUZ

Overview

The AD8630ARUZ is a quad zero-drift operational amplifier from Analog Devices, housed in a 14-lead TSSOP package. It features rail-to-rail input and output swing with a maximum supply voltage of 6 V. Key electrical parameters include a typical offset voltage of 1 µV, drift of 0.002 µV/°C, and gain bandwidth product of 2.5 MHz at 5 V supply. Input bias current is typically 100 pA, rising to 300 pA maximum. The device operates on a single supply from 2.7 V to 5 V (±1.35 V to ±2.5 V dual) with a supply current of approximately 1.0 mA per amplifier. It offers high CMRR and PSRR of 130 dB and maintains functionality across an extended temperature range of -40°C to +125°C.

Feature Summary

• Combines auto-zeroing and chopping technology to eliminate 1/f noise and minimize low-frequency errors without external components.
• Provides rail-to-rail input and output swing capability for maximizing signal-to-noise ratio and reducing input biasing complexity.
• Features extremely low offset voltage and drift specifications to ensure high accuracy over the full operating temperature range.
• Designed with fast overload recovery time to handle transients effectively when driving switched capacitor ADCs.

Applications

• Automotive sensors
• Pressure and position sensors
• Strain gage amplifiers
• Medical instrumentation
• Precision current sensing

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and packing quantity. Ensure the component meets RoHS compliance requirements if applicable to your design. Confirm that the automotive qualification status matches your system reliability standards, as commercial and automotive grades may have distinct specifications.

Selection Notes

Select this component for applications requiring ultralow offset and drift in a single-supply environment. The quad configuration allows multiple channels in a compact footprint. Consider the 2.5 MHz bandwidth and 1 V/µs slew rate for signal conditioning tasks. Verify that the 14-lead TSSOP package fits within the available PCB area constraints.

Part Context

The AD8630 belongs to the AD8628/AD8629/AD8630 family of zero-drift amplifiers. While sharing core topology and performance characteristics, the AD8630 specifically provides four independent amplifier channels. This distinguishes it from the single-channel AD8628 and dual-channel AD8629 variants, offering higher integration density for multi-sensor systems.

Replacement Considerations

The AD8630ARZ serves as a pin-compatible alternative in a 14-lead SOIC package. Designers should verify thermal dissipation differences between the TSSOP and SOIC packages during substitution.