SSM2301CPZ-REEL7

Overview

The SSM2301CPZ-REEL7 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. It features a shutdown current of 20 nA, pop-and-click suppression, and fixed or user-adjustable gain configurations.

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.
• Micropower shutdown mode reduces standby consumption to 20 nA via active-low digital control.
• Built-in resistors and differential input architecture reduce board component count and improve noise rejection.

Applications

• Mobile phones
• MP3 players
• Portable gaming devices

Procurement Notes

Verify the specific package variant (LFCSP or MSOP) against the ordering guide, as the base model number applies to multiple packaging options. Confirm RoHS compliance status indicated by the Z suffix in the part number. Ensure the supply chain source provides valid traceability documentation for this Analog Devices component.

Selection Notes

Select this amplifier for applications requiring high efficiency and minimal external components. The filterless architecture saves board space compared to traditional PWM Class-D amplifiers. Consider the gain configuration requirements; the device supports fixed gains of 6 dB or 12 dB, or adjustable gain via external resistors. Verify thermal management needs based on the specific PCB layout and copper weight.

Part Context

This component belongs to the SSM2301 series of high-efficiency audio amplifiers designed for mobile phone applications. It is fully integrated, requiring a minimum number of external components. The series includes variants in both 8-lead LFCSP and MSOP packages, all specified over the commercial temperature range of -40°C to +85°C.

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 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 using the GAIN pin, or adjusted externally by inserting resistors in series with the input pins.