AD8138AARZ-R7

Overview

The AD8138AARZ-R7 is a low distortion differential ADC driver manufactured by Analog Devices Inc. It features a -3 dB bandwidth of 320 MHz at G = +1 and a slew rate of 1150 V/µs. The device operates on a supply voltage range from +3 V to ±5 V with a quiescent current of 20 mA, consuming 90 mW at 5 V. It provides fast settling time of 16 ns to 0.01% and overdrive recovery of 4 ns. The input offset voltage is typically 1 mV, and it delivers second harmonic distortion of -94 dBc at 5 MHz.

Feature Summary

• Utilizes proprietary XFCB bipolar process for lowest harmonic distortion in differential amplifiers
• Internal feedback ensures balanced output gain and phase matching while suppressing even-order harmonics
• Adjustable output common-mode voltage via VOCM pin for easy level-shifting
• Eliminates need for transformers in high-performance ADC applications

Applications

• ADC drivers
• Single-ended-to-differential converters
• IF and baseband gain blocks
• Differential buffers
• Line drivers

Procurement Notes

Verify the specific ordering suffix R7 corresponds to the reel packaging configuration required for your assembly line. Confirm that the AARZ variant matches the thermal and mechanical specifications needed for your PCB layout. Ensure compatibility with the intended supply voltage range and temperature operating conditions before finalizing procurement.

Selection Notes

Select this component when driving state-of-the-art 10-bit to 16-bit converters at high frequencies where low distortion is critical. It is suitable for applications requiring single-ended to differential conversion without external transformers. Consider its wide supply range and adjustable common-mode output for flexible system integration.

Part Context

This part belongs to the AD8138 family of low distortion differential amplifiers. It is designed to simplify differential signal processing compared to standard op amps. The device is available in 8-lead SOIC and MSOP packages for industrial temperature ranges.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material.