SSM2301CPZ-R2

Overview

The SSM2301CPZ-R2 is a mono Class-D audio amplifier from Analog Devices, operating on a single supply voltage ranging from 2.5 V to 5.0 V. It delivers 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 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 fixed switching frequency of 1.8 MHz. It operates within a temperature range of -40°C to +85°C.

Feature Summary

• Filterless design using Sigma-Delta modulation eliminates the need for external LC output filters.
• Integrated pop-and-click suppression minimizes audible transients during power-up and power-down cycles.
• Built-in resistors reduce board component count by supporting fixed or user-adjustable gain configurations.
• Includes short-circuit protection and thermal shutdown with automatic recovery upon fault removal.

Applications

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

Procurement Notes

Verify the specific package variant, as the SSM2301 is available in both LFCSP and MSOP formats. Confirm RoHS compliance status via the manufacturer's ordering guide. Ensure the selected part matches the required temperature range and pinout configuration for your PCB layout. Cross-reference the datasheet revision to confirm feature consistency.

Selection Notes

Select this component for applications requiring high efficiency and minimal external components in space-constrained designs. The differential input capability allows for flexible interfacing with various audio sources. Consider the thermal resistance characteristics when designing heat dissipation strategies for the chosen package type.

Part Context

This component belongs to the SSM2301 series of high-efficiency Class-D audio amplifiers manufactured by Analog Devices. It is designed specifically for mobile phone applications where power conservation and small form factors are critical. The series supports both fixed and adjustable gain settings to accommodate different system requirements.

Replacement Considerations

SSM2301CPZ-REEL1

FAQ

Does the SSM2301 require external output filters?

No, the SSM2301 uses a filterless Sigma-Delta modulation scheme that relies on the speaker's inherent inductance and natural filtering capabilities.

How is the gain configured on the SSM2301?

Gain can be set to 6 dB or 12 dB via the GAIN pin, or adjusted externally using resistors connected to the input pins.