AD8334ACPZ-REEL7

Overview

The AD8334ACPZ-REEL7 is a quad-channel, ultralow noise linear-in-dB variable gain amplifier (VGA) from Analog Devices. It integrates an LNA with 19 dB gain, an X-AMP VGA providing 48 dB of range, and a programmable postamplifier. The device operates on a single 5 V supply with a 100 MHz -3 dB bandwidth per channel. Gain control offers 50 dB/V linearity over a 0 to 1 V input range. Power consumption is 145 mW per channel. Input impedance matching is adjustable via an external resistor without degrading noise performance.

Feature Summary

• Integrates ultralow noise preamplifier with 0.74 nV/√Hz voltage noise
• Features X-AMP technology for wide 48 dB gain range with consistent bandwidth
• Includes selectable postamplifier gain and adjustable output clamping level
• Provides active input impedance matching capability

Applications

• Ultrasound and sonar time-gain controls
• High performance automatic gain control systems
• I/Q signal processing
• High speed dual ADC drivers

Procurement Notes

Verify the specific package type and reel configuration against the official datasheet ordering guide. Confirm that the REEL7 suffix corresponds to the required tape and reel quantity for your manufacturing process. Ensure compatibility with the 64-lead LFCSP footprint during PCB layout planning.

Selection Notes

Select this component when driving high-speed differential ADCs requiring low noise and precise gain control. Consider the AD8332 if only two channels are needed or the AD8331 for single-channel applications. Evaluate the HI gain mode versus LO gain mode based on the required dynamic range and output noise specifications for your specific system architecture.

Part Context

This part belongs to the AD833x family of ultralow noise VGAs. The AD8334 specifically provides four independent channels in a compact lead frame chip scale package. It shares core architectural features with the AD8331 and AD8332 but offers higher channel density suitable for multi-channel data acquisition systems.

Replacement Considerations

Public confirmed substitute part numbers: AD8332ACPZ, AD8331ACPZ.