ADA4961ACPZN-R7

RF Amplifiers Overview

The ADA4961ACPZN-R7 is a high-performance BiCMOS RF digital gain amplifier (DGA) from Analog Devices. It operates within a frequency range of 1.8 GHz to 3.2 GHz, featuring a -3 dB bandwidth of 3.2 GHz and a -1 dB bandwidth of 1.8 GHz. The device provides digitally adjustable voltage gain ranging from -6 dB to +15 dB with a typical fixed gain setting of 15 dB. Key electrical parameters include a slew rate of 12,000 V/μs, a noise figure of 9 dB, an input return loss of -40 dB, a P1dB compression point of 17 dBm, and an OIP3 of 50 dBm. It requires a supply voltage between 3.3 V and 5 V, drawing 7.4 mA of current. The component is housed in a 24-lead LFCSP package (4mm x 4mm with exposed pad) and supports an operating temperature range from -40°C to +85°C.

RF Amplifiers Feature Summary

• Digitally adjustable gain control allows for precise signal attenuation or amplification across a wide dynamic range.
• High-speed performance optimized for driving heavy loads at frequencies extending beyond 2 GHz.
• Integrated design combines RF amplification with digital control interfaces for system flexibility.

RF Amplifiers Applications

• RF front-end modules requiring variable gain control
• Test and measurement equipment operating in the GHz range
• Wireless communication systems utilizing DGA technology

RF Amplifiers Procurement Notes

Verify component authenticity through authorized Analog Devices distributors or certified partners. Confirm that the received part matches the specific ordering suffix ACPZN-R7, which denotes the 24-lead LFCSP package and reel packaging configuration. Ensure storage conditions comply with moisture sensitivity levels indicated in the datasheet to prevent damage prior to soldering. Cross-reference the manufacturer date code and lot number against quality assurance documentation to guarantee reliability for critical RF applications.

RF Amplifiers Selection Notes

Select this component when a single-channel RF amplifier with integrated digital gain control is required for high-frequency applications up to 3.2 GHz. It is suitable for designs needing a balance of high linearity, specified by a 50 dBm OIP3, and low noise, characterized by a 9 dB noise figure. Consider the 24-lead LFCSP package for space-constrained PCB layouts where thermal dissipation via the exposed pad is necessary. This device is appropriate for systems demanding precise gain adjustment without external analog control circuitry.

RF Amplifiers Part Context

The ADA4961 belongs to Analog Devices' portfolio of radio frequency digital gain amplifiers. It utilizes BiCMOS technology to achieve high speed and linearity in a compact form factor. The device is designed to replace traditional discrete RF amplifier stages combined with separate attenuator controls, simplifying system architecture. It is commonly used in scenarios where dynamic range adjustment is critical for signal integrity over varying load conditions.

RF Amplifiers Replacement Considerations

Direct pin-to-pin replacements are not explicitly listed in public documentation. Evaluate alternative DGAs from Analog Devices such as the ADA4961 series variants or other high-bandwidth RF amplifiers if gain adjustability is not strictly required. Verify that any substitute maintains compatibility with the 1.8–3.2 GHz frequency range and the 24-lead LFCSP footprint.

RF Amplifiers FAQ

What is the maximum operating frequency of the ADA4961ACPZN-R7?

The device has a -3 dB bandwidth of 3.2 GHz, making it suitable for applications up to this frequency limit.

How is the gain controlled in this amplifier?

Gain is digitally adjustable via a serial interface, allowing settings from -6 dB to +15 dB.