SSM2932ACBZ-RL

Overview

The SSM2932ACBZ-RL is a stereo headphone amplifier featuring high-efficiency, ground-referenced Class-G technology. It delivers up to 85 mW per channel into 16 Ω loads at 1% THD+N with a 3.0 V supply. The device operates on a 2.5 V to 3.6 V supply range and includes selectable gain of 0 dB or 6 dB via the GAIN pin. Key specifications include a 98 dB A-weighted signal-to-noise ratio, 1.7 mA typical quiescent current, and 1 μA shutdown current. It utilizes a 16-ball WLCSP package (1.64 mm × 1.64 mm) and supports an operating temperature range from -40°C to +85°C.

Feature Summary

• Ground-referenced Class-G output stage eliminates the need for large DC blocking capacitors.
• Integrated charge pump generates positive and negative rails to maximize battery life in portable applications.
• Built-in pop-and-click reduction circuitry minimizes audible transients during startup and shutdown.
• High-Z output mode allows sharing of the output jack for other functions such as video or data transmission.

Applications

• Cell phones
• Smartphones and multimedia phones
• Portable media players
• Digital cameras

Procurement Notes

Verify component authenticity through authorized Analog Devices distributors or direct manufacturer channels. Confirm RoHS compliance status and check for obsolete status notifications, as datasheets may indicate end-of-life conditions. Ensure proper handling for ESD-sensitive WLCSP packaging during storage and assembly.

Selection Notes

Select this component for designs requiring high efficiency and minimal external passive components due to its ground-referenced architecture. Consider the 16-ball WLCSP footprint constraints and verify that the load impedance meets the minimum 16 Ω requirement. Evaluate the 2.5 V to 3.6 V supply range against system power availability.

Part Context

The SSM2932 belongs to Analog Devices' portfolio of audio amplifiers designed for mobile consumer electronics. It is part of the SSM2932 series, which focuses on delivering high-quality audio performance while optimizing power consumption for battery-operated devices. The device integrates advanced features like short-circuit protection and 8 kV ESD protection.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Consult Analog Devices technical support for potential replacements if this obsolete component is no longer sourced.

FAQ

How is the amplifier gain configured?

The gain is set by the logic level on the GAIN pin. Applying a low voltage (≤0.5 V) selects 0 dB gain, while a high voltage (≥1.2 V) selects 6 dB gain.

What is the purpose of the SGND pin?

The SGND pin senses the DC potential at the headphone jack. Connecting it directly to the jack's ground pin minimizes DC offset, reduces pop-and-click noises, and lowers crosstalk between channels.

Does the device require external coupling capacitors?

No, the ground-referenced Class-G output scheme allows headphones to be connected directly to the output pins without large DC blocking capacitors.