AD8336ACPZ-WP

Overview

The AD8336ACPZ-WP is a general-purpose, DC-coupled variable gain amplifier featuring an uncommitted preamplifier and X-AMP architecture. It operates over a supply range of ±3 V to ±12 V and a temperature span of −55°C to +125°C. The device provides a VGA gain range of 0 dB to 60 dB with a scaling factor of 50 dB/V. Small-signal bandwidth reaches 115 MHz, while large-signal bandwidth is 80 MHz at 2 V p-p. Quiescent power is 150 mW at ±3 V.

Feature Summary

• Features low noise performance with voltage noise of 3 nV/√Hz and current noise of 3 pA/√Hz.
• Utilizes X-AMP architecture to maintain frequency response across the entire gain range.
• Includes a fully independent voltage feedback preamplifier supporting inverting and noninverting topologies.
• Offers a power reduction pin (PWRA) to limit quiescent power consumption.

Applications

• Industrial process controls
• High performance AGC systems
• I/Q signal processing
• Video circuits
• Radar receivers

Procurement Notes

Verify the specific suffix 'WP' against official Analog Devices documentation to confirm it denotes a qualified or enhanced version rather than standard commercial grade. Ensure the package type matches the required PCB footprint. Confirm that the operating temperature range and supply voltage requirements align with the system design constraints before finalizing procurement.

Selection Notes

Select this component when a wide dynamic range and high linearity are required for single-ended signals. The differential gain control interface simplifies integration with external controllers. Consider the preamplifier configuration options to optimize noise and bandwidth trade-offs. Verify that the load conditions do not exceed the safe operating limits for the chosen supply voltage.

Part Context

This part belongs to the AD8336 family of wideband variable gain amplifiers. It is designed for applications requiring precise gain control over extreme environmental conditions. The device integrates a preamplifier and VGA stage, offering flexibility in system design through configurable gain settings and power management features.

Replacement Considerations

Consult official Analog Devices documentation for confirmed substitute part numbers. Do not assume compatibility based on generic specifications alone.

FAQ

How is the overall gain of the AD8336 determined?

The overall gain is the sum of the preamplifier gain and the VGA gain. The VGA gain is fixed at 34 dB, while the preamplifier gain is set by external resistors, allowing a composite gain range of −14 dB to +46 dB or 0 dB to 60 dB depending on the preamplifier configuration.

What is the function of the PWRA pin?

The PWRA pin allows for power reduction. When pulled high, it reduces the quiescent current and bandwidth by approximately half, which is advantageous for applications requiring lower power dissipation at higher supply voltages.