SSM3582BCPZR7 Class-D Audio Amplifiers by Analog Devices

Class-D Audio Amplifiers
Status: Production
Series: SSM3582
RoHS: Compliant
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The SSM3582 is a fully integrated, high efficiency, digital input stereo Class-D audio amplifier. It 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 an over 106 dB signal-to-noise ratio and a vanishingly low 0.004% THD + N.The SSM3582 operates from a single 4.5 V to 16 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% into an 8 Ω load and 90% 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×, 5-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 the digital audio interface clock, with a typical current of <1 μA. A software power-down mode is also available.An automatic power-down feature shuts down the amplifier and the digital-to-analog converter (DAC) when no signal is present at the input, minimizing power consumption during digital silence. The device restarts when nonzero data is present at the input. Mute and unmute transitions are pop/click free.The SSM3582 is specified over the commercial temperature range of −40°C to +85°C. The device has built-in thermal shutdown and output short-circuit protection, as well as an early thermal warning with programmable gain limiting to maintain operation.The SSM3582 is available in a 40-lead, 6 mm × 6 mm lead frame chip scale package (LFCSP), with a thermal pad to improve heat dissipation.
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Features

Digital input stereo, high efficiency Class-D amplifier
Operates from a single 4.5 V to 16 V supply
State-of-the-art, proprietary, filterless Σ-Δ modulation
106.5 dB signal-to-noise ratio
0.004% total harmonic distortion plus noise (THD + N) at 5 W into 8 Ω
38.5 μV rms A weighted output noise
Pop/clickless on/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 PVDD 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; 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- and 3-cell Li-Ion batteries
Digital volume control with selectable smooth ramp
Automatic power-down function
Supply monitoring automatic gain control (AGC) function reduces system brownout
Standalone operational mode without I2C
Temperature sensor with 1°C step readout via I2C
Short-circuit, undervoltage, and thermal protection
Thermal early warning
Power-on reset
PVDD sensing ADC
40-lead, 6 mm × 6 mm LFCSP with thermal pad

Alternative Descriptions

AMPLIFIER - SPECIAL PURPOSE | Richardson RFPD

Frequently Asked Questions

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What category does SSM3582BCPZR7 fall under?

The SSM3582BCPZR7 is listed under Class-D Audio Amplifiers.

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You can view similar parts to SSM3582BCPZR7 when available in the Class-D Audio Amplifiers range under the specifications section at the bottom of the details page.

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Is the SSM3582BCPZR7 RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by Analog Devices.

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