SSM2377ACBZ-RL

Overview

The SSM2377ACBZ-RL is a mono Class-D audio amplifier from Analog Devices. It delivers 2.5 W into a 4 Ω load and 1.4 W into an 8 Ω load at a 5.0 V supply voltage, with a signal-to-noise ratio exceeding 100 dB. The device operates on a single supply ranging from 2.5 V to 5.5 V and features a fixed input impedance of 80 kΩ. It utilizes spread-spectrum Σ-Δ modulation for ultralow EMI emissions and includes selectable gain settings of 6 dB or 12 dB. The component incorporates pop-and-click suppression, short-circuit protection, and thermal shutdown.

Feature Summary

• Filterless operation using spread-spectrum pulse density modulation to minimize electromagnetic interference.
• Integrated pop-and-click suppression circuitry to reduce audible transients during power cycling.
• Configurable closed-loop gain via the GAIN pin, supporting either 6 dB or 12 dB settings.
• Micropower shutdown mode that reduces current consumption to 100 nA when enabled.

Applications

• Mobile phones
• MP3 players
• Portable electronics

Procurement Notes

Verify the specific ordering suffix (RL versus R7) against the required reel quantity and packaging format before procurement. Confirm that the CB-9-4 package option aligns with the target PCB footprint. Ensure the industrial temperature range specification meets the operational requirements of the final assembly environment.

Selection Notes

Select this component for designs requiring high efficiency without external output filters. The differential input configuration supports flexible interfacing with audio sources. Consider the fixed 80 kΩ input impedance when designing coupling networks. Evaluate the 9-ball WLCSP package constraints regarding thermal dissipation and board space limitations.

Part Context

This part belongs to the SSM2377 series of filterless Class-D amplifiers. It is designed specifically for mobile phone applications where board space and battery life are critical. The technology relies on the speaker's inherent inductance for filtering, distinguishing it from traditional PWM-based architectures.

Replacement Considerations

SSM2377ACBZ-R7 is a verified substitute offering identical electrical characteristics and functionality within the same package type.