SSM2211:  Low Distortion, 1.5 W Audio Power Amplifier

The SSM2211* is a high performance audio amplifier that delivers 1 W rms of low distortion audio power into a bridge-connected 8 Ω speaker load (or 1.5 W rms into a 4 Ω load).

The SSM2211 ...続きを見る

SSM2211:  Low Distortion, 1.5 W Audio Power Amplifier

製品概要

The SSM2211* is a high performance audio amplifier that delivers 1 W rms of low distortion audio power into a bridge-connected 8 Ω speaker load (or 1.5 W rms into a 4 Ω load).

The SSM2211 operates over a wide temperature range and is specified for single-supply voltages between 2.7 V and 5.5 V. When operating from batteries, it continues to operate down to 1.75 V. This makes the SSM2211 the best choice for unregulated applications, such as toys and games.

Featuring a 4 MHz bandwidth and distortion below 0.2% THD + N @ 1 W, superior performance is delivered at higher power or lower speaker load impedance than competitive units. Furthermore, when the ambient temperature is at 25°C, THD + N < 1%, and VS = 5 V on a four-layer PCB, the SSM2211 delivers a 1.5 W output.

The low differential dc output voltage results in negligible losses in the speaker winding and makes high value dc blocking capacitors unnecessary. The battery life is extended by using shutdown mode, which typically reduces quiescent current drain to 100 nA.

The SSM2211 is designed to operate over the −40°C to +85°C temperature range. The SSM2211 is available in 8-lead SOIC (narrow body) and LFCSP (lead frame chip scale) surface-mount packages. The advanced mechanical packaging of the LFCSP models ensures lower chip temperature and enhanced performance relative to standard packaging options.

Applications include personal portable computers, hands-free telephones and transceivers, talking toys, intercom systems, and other low voltage audio systems requiring 1 W output power.

Applications

  • Portable computers
  • Personal wireless communicators
  • Hands-free telephones
  • Speaker phones
  • Intercoms
  • Musical toys and talking games

    • * Protected by U.S. Patent No. 5,519,576.

    Data Sheet, Rev. E, 4/08

    Features

    • 1.5 W output1
    • Differential (BTL2) output
    • Single-supply operation: 2.7 V to 5.5 V
    • Functions down to 1.75 V
    • Wide bandwidth: 4 MHz
    • Highly stable phase margin: >80 degrees
    • Low distortion: 0.2% THD + N @ 1 W output
    • Excellent power supply rejection

    Diagrams

    SSM2211 Diagram
    Functional Block Diagram for SSM2211

    仕様

    Product Description Mono Speaker Driver

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    * The pricing listed here is provided only for budgetary purposes as recommended list price in U.S. Dollars in the United States ex factor per unit for the stated volume. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
    ** Pricing is currently unavailable. Click on the product number to see the Product Page for additional information.

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