Overview
The SSM2211S-REEL7, produced by Analog Devices Inc., is a high-performance audio amplifier designed to deliver low distortion audio power. It 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. This amplifier 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, with the ability to function down to 1.75 V when powered by batteries. This makes it an ideal choice for unregulated applications such as toys, games, and other portable devices.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Output Power | P | RL = 8 Ω, VDD = 5 V | 1 | W | ||
| Output Power | P | RL = 4 Ω, VDD = 5 V | 1.5 | W | ||
| Total Harmonic Distortion + Noise | THD + N | P = 0.35 W into 8 Ω, f = 1 kHz | 0.1 | % | ||
| Bandwidth | 4 | MHz | ||||
| Supply Voltage | VDD | 2.7 | 5.5 | V | ||
| 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 | |
| Output Impedance | ZOUT | 0.1 | Ω | |||
| Differential Output Offset Voltage | VOOS | AVD = 2, −40°C ≤ TA ≤ +85°C | 5 | 50 | mV |
Key Features
- Low Distortion: The SSM2211S-REEL7 features total harmonic distortion plus noise (THD + N) below 0.2% at 1 W, ensuring high-quality audio output.
- Wide Operating Voltage Range: It operates from single-supply voltages between 2.7 V and 5.5 V, and can function down to 1.75 V when powered by batteries, making it suitable for battery-powered devices.
- High Bandwidth: The amplifier has a 4 MHz bandwidth, supporting a wide range of audio frequencies.
- Shutdown Mode: The device includes a shutdown mode that reduces quiescent current to 100 nA, extending battery life.
- 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.
- Unity-Gain Stability: The amplifier is unity-gain stable and does not require external compensation capacitors.
Applications
- Portable Computers: Ideal for use in portable computers due to its low power consumption and high performance.
- Personal Wireless Communicators: Suitable for use in wireless communicators such as hands-free telephones and speaker phones.
- Intercoms and Speaker Phones: Used in various communication devices requiring clear and low-distortion audio output.
- Musical Toys and Talking Games: Perfect for battery-powered toys and games that require high-quality audio.
Q & A
- What is the maximum output power of the SSM2211S-REEL7 into an 8 Ω speaker load?
The SSM2211S-REEL7 can deliver up to 1 W rms of audio power into an 8 Ω speaker load.
- What is the maximum output power of the SSM2211S-REEL7 into a 4 Ω speaker load?
The SSM2211S-REEL7 can deliver up to 1.5 W rms of audio power into a 4 Ω speaker load).
- What is the operating voltage range of the SSM2211S-REEL7?
The SSM2211S-REEL7 operates from single-supply voltages between 2.7 V and 5.5 V, and can function down to 1.75 V when powered by batteries).
- What is the total harmonic distortion plus noise (THD + N) of the SSM2211S-REEL7 at 1 W output?
The THD + N is below 0.2% at 1 W output).
- What is the bandwidth of the SSM2211S-REEL7?
The bandwidth of the SSM2211S-REEL7 is 4 MHz).
- What are the available package types for the SSM2211S-REEL7?
The SSM2211S-REEL7 is available in 8-lead SOIC (narrow body) and LFCSP (lead frame chip scale) surface-mount packages).
- Does the SSM2211S-REEL7 require external compensation capacitors?
No, the SSM2211S-REEL7 is unity-gain stable and does not require external compensation capacitors).
- How does the shutdown mode affect the quiescent current of the SSM2211S-REEL7?
The shutdown mode reduces the quiescent current to 100 nA, extending battery life).
- What is the temperature range over which the SSM2211S-REEL7 is specified to operate?
The SSM2211S-REEL7 is specified to operate over a temperature range of −40°C to +85°C).
- What are some typical applications of the SSM2211S-REEL7?
Typical applications include portable computers, personal wireless communicators, hands-free telephones, speaker phones, intercoms, and musical toys and talking games).
