AD8337BCPZ-WP

Overview

The AD8337BCPZ-WP is a low noise, single-ended, linear-in-dB, general-purpose variable gain amplifier (VGA) usable at frequencies from dc to 100 MHz with a −3 dB bandwidth of 280 MHz. It features excellent bandwidth uniformity across the entire gain range and low output-referred noise. The device utilizes Analog Devices' exclusive X-AMP architecture with a 24 dB gain range scaled to 19.7 dB/V referenced to VCOM. It operates on supplies of +5 V, ±2.5 V, or ±5 V, consuming only 78 mW with ±2.5 V supplies.

Feature Summary

• Low noise performance with voltage noise of 2.2 nV/√Hz and current noise of 4.8 pA/√Hz
• Wide bandwidth of 280 MHz (-3 dB) ensuring consistent frequency response
• Nominal gain range of 0 dB to 24 dB with precise gain scaling of 19.7 dB/V
• DC-coupled operation with single-ended input and output

Applications

• Gain trim applications
• PET scanners
• High performance AGC systems
• I/Q signal processing
• Video systems

Procurement Notes

Verify the specific suffix 'WP' against the manufacturer's official ordering guide to confirm it denotes a qualified military or enhanced reliability grade variant, as standard commercial versions lack this designation. Ensure the component matches the exact pinout and thermal pad requirements for your PCB layout. Cross-reference the datasheet revision to confirm all electrical specifications align with your design constraints before finalizing procurement.

Selection Notes

Select this component when a low-noise, high-speed VGA is required for driving high-speed analog-to-digital converters. Its DC coupling capability makes it suitable for applications requiring precise control over negative-going pulses, such as those from photodiodes. Consider its power consumption and supply voltage flexibility (+5 V or dual supplies) when designing the power management section of the system.

Part Context

The AD8337 is part of Analog Devices' portfolio of specialized amplifiers designed for precision signal conditioning. It employs a proprietary dielectrically isolated complementary bipolar process. This family of devices is engineered to provide robust performance in demanding environments, offering a balance of high speed, low noise, and versatile gain control capabilities for various industrial and medical applications.

Replacement Considerations

Direct replacements include other AD8337 variants such as AD8337ACPZ or AD8337ARMZ. Verify that any substitute maintains the same LFCSP-8 package and exposed pad configuration for thermal compatibility. Ensure the alternative meets the 280 MHz bandwidth and 19.7 dB/V gain scaling requirements specified in the original design.