SSM2519ACBZ-R7

Overview

The SSM2519 is a digital input, Class-D power amplifier integrating a DAC and sigma-delta modulator. It delivers 2.31 W into 4 Ω and 1.35 W into 8 Ω at 5 V supply with 1% THD+N. Efficiency reaches 90% at full scale into 8 Ω. The device operates on a 2.5 V to 5.5 V PVDD supply and a 1.5 V to 3.6 V VDD supply. It supports sample rates from 8.0 kHz to 48.0 kHz with an SNR of 98 dB (A-weighted) and PSRR of 80 dB at 217 Hz. Idle power consumption is 9 mW at 1.8 V/3.6 V.

Feature Summary

• Filterless digital input architecture combining a DAC and sigma-delta Class-D modulator for low real-world power consumption.
• Supports standalone operation or I2C control via programmable serial audio interface formats including I2S, left justified, right justified, TDM, and PCM.
• Includes pop and click suppression, short-circuit protection, thermal shutdown with autorecovery, and smart power-down when no input signal is detected.

Applications

• Mobile phones
• Portable media players
• Laptop PCs
• Wireless speakers
• Navigation systems

Procurement Notes

Verify the specific ordering suffix matches the required package and reel specifications. Confirm that the component meets all relevant environmental compliance standards required for your target market. Ensure that the voltage levels on the MCLK, BCLK, and SDATA pins are compatible with your system's logic levels before integration.

Selection Notes

Select this component for applications requiring a fully digital audio interface to minimize noise susceptibility from GSM interference or other digital signals. It is suitable for power-sensitive designs where high efficiency and low quiescent current are critical. Consider the available analog gain settings optimized for different PVDD voltages when designing the power supply rails.

Part Context

The SSM2519 is part of Analog Devices' portfolio of digital input Class-D audio amplifiers. It utilizes a three-level sigma-delta modulator designed to provide low EMI interference and high audio efficiency. The device is specified over the industrial temperature range of -40°C to +85°C and is housed in a compact 12-ball WLCSP package.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.

FAQ

Can the SSM2519 operate without a bit clock (BCLK)?

Yes, the SSM2519 can operate without an external BCLK. If the BCLK pin is tied to ground or VDD, the device internally generates the appropriate bit clock rate based on the selected configuration.

What is the function of the SD pin?

The SD pin determines the operational mode. Tying it to VDD through a 20 kΩ resistor enables I2C control mode. Connecting it directly to VDD enables standalone mode. Pulling it low places the device in shutdown mode.

How does the smart power-down feature work?

When enabled, the device analyzes the incoming digital audio. If zero samples are detected for 512 consecutive samples, the IC enters a low power state. It resumes normal operation upon receiving a single nonzero input sample.