Overview
The SSM2305RMZ-R2 is a fully integrated, high-efficiency Class-D audio amplifier designed by Analog Devices Inc. This amplifier is optimized for mobile phone applications and other portable electronics, offering high performance with minimal external components. It operates from a single supply voltage ranging from 2.5 V to 5.5 V, making it versatile for various battery-powered devices. The SSM2305RMZ-R2 is known for its high efficiency, low noise modulation scheme, and built-in protection features such as thermal shutdown and output short-circuit protection.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage Range | 2.5 to 5.5 | V |
| Output Power (into 8 Ω) | 2.2 W | W |
| Efficiency (at 1.3 W into 8 Ω) | 89% | % |
| Signal-to-Noise Ratio (SNR) | >98 dB | dB |
| Shutdown Current | 20-30 nA | nA |
| Package Type | 8-Lead Mini Small Outline Package (MSOP) | - |
| Operating Temperature Range | -40°C to +85°C | °C |
| Gain Control | Fixed and user-adjustable gain configurations | - |
| Differential Input Impedance | 37 kΩ | kΩ |
Key Features
- High efficiency with up to 89% efficiency at 1.3 W into 8 Ω and 83% efficiency at 2.2 W into 4 Ω from a 5.0 V supply.
- Low noise modulation scheme without the need for external LC output filters.
- Spread-spectrum pulse density modulation to reduce EMI-radiated emissions.
- Single-supply operation from 2.5 V to 5.5 V.
- Ultralow shutdown current of 20-30 nA.
- Built-in thermal shutdown and output short-circuit protection.
- Pop-and-click suppression circuitry to minimize audible noise during turn-on and turn-off.
- Excellent rejection of common-mode noise and power supply noise.
- Fixed and user-adjustable gain configurations.
Applications
- Mobile phones
- MP3 players
- Portable gaming devices
- Portable electronics
- Educational toys
Q & A
- What is the operating voltage range of the SSM2305RMZ-R2?
The SSM2305RMZ-R2 operates from a single supply voltage ranging from 2.5 V to 5.5 V.
- What is the maximum output power of the SSM2305RMZ-R2 into an 8 Ω load?
The maximum output power is 2.2 W into an 8 Ω load.
- What is the efficiency of the SSM2305RMZ-R2 at 1.3 W into an 8 Ω load?
The efficiency is up to 89% at 1.3 W into an 8 Ω load.
- What is the signal-to-noise ratio (SNR) of the SSM2305RMZ-R2?
The SNR is greater than 98 dB.
- What type of package does the SSM2305RMZ-R2 come in?
The SSM2305RMZ-R2 comes in an 8-Lead Mini Small Outline Package (MSOP).
- What are the built-in protection features of the SSM2305RMZ-R2?
The SSM2305RMZ-R2 has built-in thermal shutdown and output short-circuit protection.
- How does the SSM2305RMZ-R2 reduce EMI-radiated emissions?
The SSM2305RMZ-R2 uses spread-spectrum pulse density modulation to reduce EMI-radiated emissions.
- What is the shutdown current of the SSM2305RMZ-R2?
The shutdown current is 20-30 nA.
- Does the SSM2305RMZ-R2 require external LC output filters?
No, the SSM2305RMZ-R2 does not require external LC output filters due to its low noise modulation scheme.
- What are some common applications of the SSM2305RMZ-R2?
Common applications include mobile phones, MP3 players, portable gaming devices, portable electronics, and educational toys.
