Overview
The SSM2211S-REEL, produced by Analog Devices Inc., is a high-performance audio amplifier designed to deliver low distortion audio power. This amplifier is capable of providing 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 of -40°C to +85°C and is specified for single-supply voltages between 2.7 V and 5.5 V, continuing to function down to 1.75 V when operating from batteries. This makes it an ideal choice for unregulated applications such as toys, games, and other portable audio devices.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Differential Output Offset Voltage | VOOS | AVD = 2 | 5 | 50 | mV | |
| Output Impedance | ZOUT | 0.1 | Ω | |||
| Input Voltage High | VIH | ISY = < 100 mA | 1.5 | V | ||
| Input Voltage Low | VIL | ISY = normal | 0.8 | V | ||
| Supply Current | ISY | VO1 = VO2 = 2.5 V | 9.5 | mA | ||
| Supply Current, Shutdown Mode | ISD | Pin 1 = VDD | 100 | nA | ||
| Total Harmonic Distortion + Noise | THD + N | P = 0.35 W into 8 Ω, f = 1 kHz | 0.1 | % | ||
| Bandwidth | 4 | MHz | ||||
| Operating Temperature Range | -40 | °C | ||||
| 85 | °C | |||||
| Supply Voltage Range | 2.7 | V | ||||
| 5.5 | V |
Key Features
- Differential Inputs: The SSM2211 features differential inputs, enhancing signal integrity and noise rejection.
- Shutdown Feature: The amplifier includes a shutdown mode that reduces quiescent current drain to 100 nA, extending battery life in portable applications.
- Low Distortion and Noise: It offers low total harmonic distortion plus noise (THD + N) of less than 0.2% at 1 W output, ensuring high-quality audio.
- Wide Operating Temperature Range: The device operates over a temperature range of -40°C to +85°C, making it suitable for various environmental conditions.
- Compact Packaging: Available in 8-lead SOIC (narrow body) and LFCSP (lead frame chip scale) surface-mount packages, which ensure lower chip temperature and enhanced performance.
- Single-Supply Operation: The amplifier can operate from a single supply voltage between 2.7 V and 5.5 V, and it continues to function down to 1.75 V when powered by batteries.
- High Bandwidth: It features a 4 MHz bandwidth, supporting a wide range of audio frequencies.
- RoHS Compliance: The SSM2211 is RoHS3 compliant, ensuring environmental friendliness.
Applications
- Portable Audio Devices: Ideal for use in portable audio devices such as MP3 players, handheld games, and musical toys.
- Home Audio Equipment: Suitable for home audio systems, speaker phones, and intercoms.
- Professional Audio Applications: Used in professional audio equipment, such as public address systems and audio monitoring devices.
- Personal Wireless Communicators: Applicable in hands-free telephones and other wireless communication devices.
- Other Applications: Also used in musical toys, talking games, and various other electronic devices requiring high-quality audio amplification.
Q & A
- What is the maximum output power of the SSM2211?
The SSM2211 can deliver up to 1 W rms of audio power into a bridge-connected 8 Ω speaker load or 1.5 W rms into a 4 Ω load.
- What is the operating temperature range of the SSM2211?
The SSM2211 operates over a temperature range of -40°C to +85°C.
- What is the supply voltage range for the SSM2211?
The SSM2211 can operate from a single supply voltage between 2.7 V and 5.5 V, and it continues to function down to 1.75 V when powered by batteries.
- What is the total harmonic distortion plus noise (THD + N) of the SSM2211?
The THD + N is less than 0.2% at 1 W output.
- Does the SSM2211 have a shutdown feature?
Yes, the SSM2211 includes a shutdown mode that reduces quiescent current drain to 100 nA.
- What are the available package types for the SSM2211?
The SSM2211 is available in 8-lead SOIC (narrow body) and LFCSP (lead frame chip scale) surface-mount packages.
- Is the SSM2211 RoHS compliant?
Yes, the SSM2211 is RoHS3 compliant.
- What is the bandwidth of the SSM2211?
The SSM2211 features a 4 MHz bandwidth.
- What are some typical applications of the SSM2211?
The SSM2211 is used in portable audio devices, home audio equipment, professional audio applications, and personal wireless communicators.
- What is the output impedance of the SSM2211?
The output impedance of the SSM2211 is 0.1 Ω.
