SSM3582A

RECOMMENDED FOR NEW DESIGNS

2×, 31.76 W, Digital Input, Filterless Stereo Class D Audio Amplifier

Analog Devices SSM3582A Product Info

10 February 2026 5

Features

Digital input stereo, high efficiency Class-D amplifier
Operates from a single 4.5 V to 16.5 V supply
State-of-the-art, proprietary, filterless Σ-Δ modulation
- 106.5 dB SNR at P_O = 8.1 W, R_L = 8 Ω, A_V = 19 dB, PV_DD = 12 V, A weighted
- 0.004% THD + N at 5 W into 8 Ω
- 38.5 μV rms output voltage noise, f = 20 Hz to 20 kHz, A weighted, PV_DD = 16 V, 8 Ω
Pop and clickless on and off sequence
2× 14.67 W output at 12 V supply to 4 Ω loads at <1% THD + N
2× 14.4 W output at 16 V supply to 8 Ω loads at <1% THD + N
Mono mode for increased maximum output power
1× 49.69 W output at 16 V supply to 2 Ω loads at <1% THD + N
Support for low impedance loads
- As low as 3 Ω/5 μH in stereo mode
- As low as 2 Ω/5 μH in mono mode
High power efficiency
- 93.8% efficiency into an 8 Ω load
- 90.6% efficiency into a 4 Ω load
- 12.34 mA quiescent current with single 12 V PV_DD supply

Single-supply operation with internal LDOs or option to use an external 5 V and 1.8 V supply for lowest power consumption
I²C control and hardware modes with up to 16 pin-selectable slots/addresses
Supported sample rates from 8 kHz to 192 kHz with 24-bit resolution
Multiple PCM audio serial data formats
- TDM slave with support for up to 16 devices on a single bus
- I²S or left justified slave
Adjustable full-scale output tailored for many PVDD sources
2- a

Part details & applications

TThe SSM3582A is a fully integrated, high efficiency, digital input stereo Class-D audio amplifier. The device can operate from a single supply and requires only a few external components, significantly reducing the circuit bill of materials.

A proprietary, spread spectrum Σ-Δ modulation scheme enables direct connection to the speaker and ensures state-of-the-art analog performance while lowering radiated emissions compared to other Class-D architectures. An optional ultralow electromagnetic interference (EMI) mode significantly reduces radiated emissions above 100 MHz, enabling longer speaker cable lengths. Audio is transmitted digitally to the amplifier, minimizing the possibility of signal corruption in digital environments. The amplifier provides outstanding analog performance, with a 106 dB signal-to-noise ratio and a low 0.004% total harmonic distortion + noise (THD + N).

The SSM3582A operates from a single 4.5 V to 16.5 V supply and is capable of delivering 2× 15 W rms continuously into 8 Ω and 4 Ω loads at <1% total harmonic distortion (THD). The efficient modulation scheme maintains excellent power efficiency over a wide range of impedances: 93.8% into an 8 Ω load and 90.6% into a 4 Ω load. Optimization of the output pulse maintains performance at impedances as low as 3 Ω/5 μH, enabling its use with extended bandwidth tweeters.

The pulse code modulation (PCM) audio serial port supports most common protocols, such as I²S, left justified, and time division multiplexing (TDM), and can address up to 16 devices on a single interface, for up to 32 audio playback channels.

IC operation is controlled through a dedicated I²C interface. The two ADDRx pins (2×, five-level) define up to 16 individual addresses in I²C and standalone modes and automatically set the default TDM slots attribution.

A micropower shutdown mode is triggered by removing t

Subscribe to Welllinkchips !

Your Name

* Email