Overview
The SSM2211S from Analog Devices Inc. is a high-performance, low-noise, and low-distortion audio power amplifier integrated circuit (IC). This monaural audio amplifier is designed to deliver 1 W RMS of audio power into a bridge-connected 8 Ω speaker load or 1.5 W RMS into a 4 Ω load. It operates over a wide temperature range and is specified for single-supply voltages between 2.7 V and 5.5 V, making it suitable for various audio applications, including portable devices and unregulated battery-powered systems.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Supply Voltage | VDD | 2.7 | 5.5 | V | ||
| Output Power (8 Ω load) | P | 1 | W | |||
| Output Power (4 Ω load) | P | 1.5 | W | |||
| Total Harmonic Distortion + Noise (THD + N) | THD + N | P = 0.35 W into 8 Ω, f = 1 kHz | 0.1 | 0.2 | % | |
| Bandwidth | 4 | MHz | ||||
| Output Impedance | ZOUT | 0.1 | Ω | |||
| Supply Current | ISY | VOUTA = VOUTB = 1.65 V, −40°C ≤ TA ≤ +85°C | 4.2 | 20 | mA | |
| Shutdown Current | ISD | Pin 1 = VDD, −40°C ≤ TA ≤ +85°C | 0.1 | 1 | µA |
Key Features
- Differential inputs and outputs for improved noise rejection and performance.
- Shutdown feature to conserve power when not in use.
- Operating voltage range of 2.7 V to 5.5 V, with operation down to 1.75 V from batteries.
- Low noise and distortion, with THD + N below 0.2% at 1 W.
- Wide operating temperature range: -40°C to 85°C.
- Compact 8-SOIC package.
- Efficient Class AB operation.
- RoHS3 compliant for environmental friendliness.
Applications
- Portable computers and personal wireless communicators.
- Hands-free telephones, speakerphones, and intercoms.
- Musical toys and talking games.
- Home audio equipment and professional audio applications.
Q & A
- What is the maximum output power of the SSM2211S into an 8 Ω load?
The SSM2211S can deliver up to 1 W RMS of audio power into an 8 Ω load. - What is the maximum output power of the SSM2211S into a 4 Ω load?
The SSM2211S can deliver up to 1.5 W RMS of audio power into a 4 Ω load. - What is the operating voltage range of the SSM2211S?
The operating voltage range is between 2.7 V and 5.5 V, with operation down to 1.75 V from batteries. - What is the total harmonic distortion plus noise (THD + N) of the SSM2211S?
The THD + N is below 0.2% at 1 W into an 8 Ω load. - What is the bandwidth of the SSM2211S?
The bandwidth is 4 MHz. - Does the SSM2211S have a shutdown feature?
Yes, it has a shutdown feature to conserve power when not in use. - What is the package type of the SSM2211S?
The package type is 8-SOIC. - Is the SSM2211S RoHS compliant?
Yes, it is RoHS3 compliant. - What are some typical applications of the SSM2211S?
Typical applications include portable computers, personal wireless communicators, hands-free telephones, speakerphones, intercoms, musical toys, and professional audio applications. - What is the operating temperature range of the SSM2211S?
The operating temperature range is -40°C to 85°C.
