SSM2301RMZ-REEL7

Overview

The SSM2301RMZ-REEL7 is a mono Class-D audio amplifier from Analog Devices, packaged in an 8-lead MSOP. It operates on a single supply voltage ranging from 2.5 V to 5.0 V and delivers up to 1.4 W of continuous output power into an 8 Ω load at 5.0 V with less than 1% THD+N. The device utilizes Σ-Δ modulation for filterless operation, achieving 85% efficiency at full power and greater than 98 dB SNR. Key electrical parameters include a shutdown current of 20 nA, a typical PSRR of 63 dB at 217 Hz, and a differential input impedance of 150 kΩ or 210 kΩ depending on gain settings.

Feature Summary

• Filterless design utilizing Sigma-Delta modulation that eliminates the need for external LC output filters.
• Integrated pop-and-click suppression circuitry to minimize audible transients during power-up and shutdown.
• Micropower shutdown mode with ultralow standby current consumption.
• Built-in protection mechanisms including thermal shutdown and output short-circuit protection.

Applications

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

Procurement Notes

Verify the specific package variant (MSOP vs LFCSP) and reel packaging suffix against the manufacturer's ordering guide. Confirm RoHS compliance status and ensure the component meets the required commercial temperature range specifications for the intended deployment environment.

Selection Notes

Select this component for applications requiring high efficiency and minimal external component count. Ensure the input signal bias falls within the recommended common-mode voltage range to potentially omit input coupling capacitors. Verify that the system power supply can support the peak current demands during high-output conditions.

Part Context

This part belongs to the SSM2301 series of fully integrated, high-efficiency Class-D audio amplifiers designed for mobile phone applications. The RMZ suffix indicates the 8-lead Mini Small Outline Package variant, distinguishing it from the lead-frame chip scale package options available within the same product family.

Replacement Considerations

SSM2301CPZ-R21

FAQ

Does the SSM2301 require external output filters?

No, the SSM2301 uses a filterless Sigma-Delta modulation scheme that relies on the inherent inductance of the speaker coil and natural filtering to recover the audio signal.

How is the gain configured on the SSM2301?

The gain can be set to 6 dB or 12 dB by connecting the GAIN pin to ground or VDD, respectively. External resistors can also be used for user-adjustable gain settings.