LM4880 Datasheet, PDF (1/20 Pages) National Semiconductor (TI) – Dual 250 mW Audio Power Amplifier with Shutdown Mode

LM4880
www.ti.com
SNAS103C – NOVEMBER 1995 – REVISED MAY 2013
LM4880
Dual 250 mW Audio Power Amplifier with
Shutdown Mode
Check for Samples: LM4880
FEATURES
1
•2 No Bootstrap Capacitors or Snubber Circuits
are Necessary
• Small Outline (SOIC) and PDIP Packaging
• Unity-Gain Stable
• External Gain Configuration Capability
APPLICATIONS
• Headphone Amplifier
• Personal Computers
• CD-ROM Players
KEY SPECIFICATIONS
• THD+N at 1kHz at 200mW Continuous Average
Output Power into 8Ω: 0.1% (max)
• THD+N at 1kHz at 85mW Continuous Average
Output Power into 32Ω: 0.1% (typ)
• Output Power at 10% THD+N at 1kHz into 8Ω
325 mW (typ)
• Shutdown Current 0.7 µA (typ)
• 2.7V to 5.5V Supply Voltage Range
DESCRIPTION
The LM4880 is a dual audio power amplifier capable
of delivering typically 250mW per channel of
continuous average power to an 8Ω load with 0.1%
THD+N using a 5V power supply.
Boomer audio power amplifiers were designed
specifically to provide high quality output power with a
minimal amount of external components using
surface mount packaging.
Since the LM4880 does not require bootstrap
capacitors or snubber networks, it is optimally suited
for low-power portable systems.
The LM4880 features an externally controlled, low-
power consumption shutdown mode, as well as an
internal thermal shutdown protection mechanism.
The unity-gain stable LM4880 can be configured by
external gain-setting resistors.
Connection Diagram
Figure 1. Small Outline and PDIP Packages- Top View
See Package Number D0008A for SOIC
or Package Number P0008E for PDIP
1
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2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 1995–2013, Texas Instruments Incorporated