Overview
The SSM2305RMZ-REEL, produced by Analog Devices Inc., is a high-performance, filterless, high-efficiency, single-channel Class-D audio power amplifier. This device is designed to maximize performance in mobile phone applications and other portable electronics. It operates from a single supply voltage ranging from 2.5 V to 5.5 V and is capable of delivering up to 2.8 W of continuous output power. The amplifier features a high efficiency modulation scheme that does not require external LC output filters, making it ideal for applications where space and component count are critical.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage Range | 2.5 to 5.5 | V |
| Output Power (into 8 Ω) | 2.2 W (at 5.0 V) | W |
| Output Power (into 4 Ω) | 2.2 W (at 5.0 V) | W |
| Efficiency (at 1.3 W into 8 Ω) | 90% | % |
| Efficiency (at 2.2 W into 4 Ω) | 83% | % |
| Signal-to-Noise Ratio (SNR) | >98 dB | dB |
| Shutdown Current | 20-30 nA | nA |
| Gain Control | 18 dB (Closed-Loop Gain) | dB |
| Differential Input Impedance | 37 kΩ | kΩ |
| Output Impedance (Shutdown) | >100 kΩ | kΩ |
| Package Type | 8-lead MSOP | - |
Key Features
- High efficiency, low noise modulation scheme without the need for external LC output filters.
- Single-supply operation from 2.5 V to 5.5 V.
- Pop-and-click suppression circuitry to minimize audible noise during turn-on and turn-off.
- Built-in thermal shutdown and output short-circuit protection.
- Ultralow shutdown current of 20-30 nA.
- Fixed and user-adjustable gain configurations.
- Spread-spectrum pulse density modulation for lower EMI-radiated emissions.
- Excellent rejection of common-mode noise and power supply noise.
Applications
- Mobile phones
- MP3 players
- Portable gaming devices
- Portable electronics
- Educational toys
Q & A
- What is the supply voltage range of the SSM2305RMZ-REEL?
The supply voltage range is from 2.5 V to 5.5 V.
- What is the maximum output power of the SSM2305RMZ-REEL into an 8 Ω load?
The maximum output power is 2.2 W at 5.0 V supply voltage.
- What is the efficiency of the SSM2305RMZ-REEL at 1.3 W into an 8 Ω load?
The efficiency is approximately 90% at 1.3 W into an 8 Ω load.
- Does the SSM2305RMZ-REEL require external LC output filters?
No, it does not require external LC output filters due to its high efficiency modulation scheme.
- What is the shutdown current of the SSM2305RMZ-REEL?
The shutdown current is between 20-30 nA.
- What type of protection does the SSM2305RMZ-REEL have?
The device has built-in thermal shutdown and output short-circuit protection.
- What is the signal-to-noise ratio (SNR) of the SSM2305RMZ-REEL?
The SNR is greater than 98 dB.
- What package types are available for the SSM2305RMZ-REEL?
The device is available in an 8-lead MSOP package.
- Does the SSM2305RMZ-REEL have pop-and-click suppression?
- What are some common applications of the SSM2305RMZ-REEL?
