ADL6316ACCZ

Overview

The ADL6316ACCZ is a transmit variable gain amplifier (VGA) manufactured by Analog Devices Inc. It operates within an RF frequency range of 500 MHz to 1000 MHz and interfaces RF DACs, transceivers, or SoCs to power amplifiers. The device features a 20.5 dB voltage variable attenuator (VVA) with on-chip DAC control and a 14 dB digital step attenuator (DSA) with 0.45 dB resolution. It utilizes two-stage high linearity amplifiers and includes an internal balun with bias tee. Key electrical parameters include a typical power gain of 30.7 dB at 960 MHz, an output 1 dB compression point (OP1dB) of 24.7 dBm, and an output third-order intercept point (OIP3) of 41.1 dBm. The noise figure is 5.95 dB at 960 MHz. It requires a single 5 V supply, drawing 435 mA in high performance mode, and is housed in a 38-terminal LGA package.

Feature Summary

• Integrates a voltage variable attenuator (VVA), high linearity amplifiers, and a digital step attenuator (DSA) for comprehensive signal chain management.
• Includes an internal balun and quadrature hybrids to convert differential inputs to single-ended outputs with wideband matching.
• Fully programmable via a 4-wire serial port interface (SPI) allowing configuration of attenuation ranges and signal path modes.
• Supports dual signal path modes controlled by the TXEN pin for real-time switching without SPI latency.

Applications

• Broadband communication systems including 2G, 3G, 4G, and LTE in FDD/TDD configurations
• Transmitter interfaces connecting RF DACs or transceivers to power amplifiers
• High dynamic range multicarrier transmitter designs

Procurement Notes

Verify the specific ordering suffix ACCZ corresponds to the standard LGA-38 package variant when sourcing. Confirm that the component meets RoHS compliance requirements for your assembly process. Ensure the PCB layout strictly follows the manufacturer's thermal resistance guidelines, particularly regarding the exposed pad connection to ground, to maintain specified junction temperatures and reliability under continuous operation.

Selection Notes

Select this component for applications requiring precise gain control between 500 MHz and 1000 MHz. It is suitable for designs needing integrated impedance matching and conversion from differential to single-ended signals. Consider the 435 mA supply current and thermal dissipation characteristics during the initial design phase. Verify that the system architecture supports the required 4-wire SPI communication protocol for full functionality.

Part Context

The ADL6316 belongs to a family of transmit VGAs designed for wireless infrastructure. It is part of a series that includes variants like the ADL6317, which covers higher frequencies up to 3000 MHz. These devices are built using silicon germanium (SiGe) BiCMOS technology to achieve high linearity and low noise figures essential for modern broadband communication standards.

Replacement Considerations

The ADL6317 serves as a functional substitute for applications requiring similar VGA capabilities but operating in the 1500 MHz to 3000 MHz frequency range. Designers must account for the differences in frequency response and potentially different pinout or register configurations when migrating between these family members.

FAQ

How does the ADL6316 handle differential input signals?

The device incorporates an internal balun that converts the 50 Ω differential RF input signals into a single-ended signal. This is followed by a quadrature hybrid to facilitate wideband performance and impedance matching.

What methods are available for controlling the VVA attenuation?

The VVA attenuation can be controlled either internally via a 12-bit DAC through the SPI interface or externally by applying an analog voltage to the VVA_ANALOG pin.