SSM2335CBZ-R2

Overview

The SSM2335CBZ-R2 is a fully integrated, high-efficiency mono Class-D audio amplifier from Analog Devices. It utilizes filterless Σ-Δ modulation to deliver up to 3 W of continuous output power into a 3 Ω load at 5.0 V supply voltage. The device operates on a single supply ranging from 2.5 V to 5.5 V and features a default fixed gain of 18 dB, which can be adjusted via external resistors. It includes pop-and-click suppression, ultralow shutdown current (20 nA), and short-circuit/thermal protection. The component is housed in a compact 9-ball, 1.5 mm × 1.5 mm WLCSP package.

Feature Summary

• Filterless design using spread-spectrum Σ-Δ modulation eliminates the need for external output filters and reduces EMI emissions.
• Integrated pop-and-click suppression circuitry minimizes audible transients during power-up and power-down cycles.
• Built-in thermal shutdown and output short-circuit protection ensure robust operation under fault conditions.
• Micropower shutdown mode with typical 20 nA current consumption extends battery life in portable applications.

Applications

• Mobile phones
• MP3 players
• Portable gaming devices
• Educational toys

Procurement Notes

Verify the specific ordering suffix R2 against the manufacturer's official documentation to confirm reel packaging specifications. Ensure compatibility with the required industrial temperature range of −40°C to +85°C. Confirm that the 9-ball WLCSP footprint matches the PCB layout guidelines provided in the datasheet. Cross-reference the RoHS compliance status with current regulatory requirements before finalizing procurement.

Selection Notes

Select this component for designs requiring a minimal external component count due to its filterless architecture. It is suitable for space-constrained mobile applications where board area is limited. Consider the user-adjustable gain feature if signal levels require attenuation below the default 18 dB setting. Evaluate the 2.5 V to 5.5 V supply range against the system's battery profile to ensure optimal efficiency across the discharge curve.

Part Context

The SSM2335 belongs to Analog Devices' portfolio of high-efficiency Class-D audio amplifiers designed for mobile electronics. It shares architectural similarities with other filterless models but is optimized for mono channel applications. The device integrates a modulator, driver, and protection circuits into a single chip, distinguishing it from discrete amplifier solutions or those requiring complex output filtering networks.

Replacement Considerations

SSM2335CBZ-REEL

FAQ

Does the SSM2335 require an external output filter?

No, the SSM2335 uses a filterless Class-D architecture that relies on the inherent inductance of the speaker coil and the natural filtering of the human ear to recover the audio signal.

How is the gain of the amplifier configured?

The device has a default fixed gain of 18 dB. Users can reduce the gain by connecting a pair of external resistors to the gain control pins.