Overview
The SSM3302ACPZ-RL, manufactured by Analog Devices Inc., is a fully integrated, high efficiency, stereo Class-D audio amplifier. This device operates from a single supply voltage ranging from 7 V to 18 V and requires minimal external components. It is capable of delivering 2 × 10 W of continuous output power into a 4 Ω load (or 2 × 8 W into 8 Ω) with less than 1% Total Harmonic Distortion plus Noise (THD + N) from a 12 V supply. Additionally, in mono mode, it can drive a load as small as 2 Ω up to 20 W continuous output power by stacking the stereo output terminals.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage Range | 7 V to 18 V | V |
| Output Power (into 4 Ω) | 2 × 10 W | W |
| Output Power (into 8 Ω) | 2 × 8 W | W |
| Output Power (Mono Mode into 2 Ω) | 20 W | W |
| THD + N (at 12 V supply) | < 1% | % |
| Signal-to-Noise Ratio (SNR) | > 98 dB | dB |
| Efficiency (at 7 W into 8 Ω) | 90% | % |
| Efficiency (at 10 W into 4 Ω) | 82% | % |
| Shutdown Current | 10 μA | μA |
| Package Type | 40-lead LFCSP | |
| Operating Temperature Range | -40°C to +85°C | °C |
Key Features
- High efficiency, low noise modulation scheme requiring no external LC output filters.
- Spread spectrum pulse density modulation (PDM) for lower EMI radiated emissions.
- Optional ultralow EMI emission mode to reduce radiated emissions above 100 MHz.
- Fully differential input for excellent rejection of common-mode noise.
- Flexible gain select pin allowing gain adjustment between 9 dB and 24 dB.
- Pop-and-click suppression circuitry to minimize audible noise during turn on and turn off.
- Integrated voltage regulator generating a 5 V rail.
- Micropower shutdown mode with a typical shutdown current of 10 μA.
- Thermal warning indicator and built-in thermal shutdown and output short-circuit protection.
Applications
- Mobile computing devices.
- Flat panel televisions.
- Media docking stations.
- Portable electronics.
- Sound bars.
Q & A
- What is the supply voltage range of the SSM3302ACPZ-RL?
The supply voltage range is from 7 V to 18 V. - What is the maximum output power of the SSM3302ACPZ-RL into a 4 Ω load?
The maximum output power is 2 × 10 W. - What is the signal-to-noise ratio (SNR) of the SSM3302ACPZ-RL?
The SNR is greater than 98 dB. - Does the SSM3302ACPZ-RL require external LC output filters?
No, it does not require external LC output filters due to its high efficiency, low noise modulation scheme. - What is the shutdown current of the SSM3302ACPZ-RL?
The shutdown current is typically 10 μA. - What is the operating temperature range of the SSM3302ACPZ-RL?
The operating temperature range is from -40°C to +85°C. - What type of package does the SSM3302ACPZ-RL come in?
The SSM3302ACPZ-RL comes in a 40-lead LFCSP package. - Does the SSM3302ACPZ-RL have built-in thermal protection?
Yes, it has built-in thermal shutdown and output short-circuit protection. - What is the purpose of the spread spectrum pulse density modulation (PDM) in the SSM3302ACPZ-RL?
The spread spectrum PDM reduces EMI radiated emissions, particularly above 100 MHz. - Can the SSM3302ACPZ-RL pass FCC Class-B emissions testing?
Yes, it can pass FCC Class-B emissions testing with an unshielded 20 inch cable using common-mode choke-based filtering.
