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LM4880 Datasheet Preview

LM4880 Datasheet

Dual 250mW Audio Power Amplifier

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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
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
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




etcTI

LM4880 Datasheet Preview

LM4880 Datasheet

Dual 250mW Audio Power Amplifier

No Preview Available !

LM4880
SNAS103C – NOVEMBER 1995 – REVISED MAY 2013
Typical Application
www.ti.com
*Refer to Application Information for information concerning proper selection of the input and output coupling
capacitors.
Figure 2. Typical Audio Amplifier Application Circuit
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
Absolute Maximum Ratings (1)(2)
Supply Voltage
Storage Temperature
Input Voltage
Power Dissipation (3)
ESD Susceptibility (4)
ESD Susceptibility (5)
Junction Temperature
Soldering Information
Thermal Resistance
Small Outline Package
Vapor Phase (60 sec.)
Infrared (15 sec.)
θJC (PDIP)
θJA (PDIP)
θJC (SOIC)
θJA (SOIC)
6.0V
65°C to +150°C
0.3V to VDD + 0.3V
Internally limited
2000V
200V
150°C
215°C
220°C
37°C/W
107°C/W
35°C/W
170°C/W
(1) Absolute Maximum Ratings indicate limits beyond which damage may occur. Operating Ratings indicate conditions for which the device
is functional, but do not specify specific performance limits. Electrical Characteristics state DC and AC electrical specifications under
particular test conditions which ensure specific performance limits. This assumes that the device is within the Operating Ratings.
Specifications are not specified for parameters where no limit is given, however, the typical value is a good indication of device
performance.
(2) If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/ Distributors for availability and
specifications.
(3) The maximum power dissipation must be derated at elevated temperatures and is dictated by TJMAX, θJA, and the ambient temperature
TA. The maximum allowable power dissipation is PDMAX = (TJMAX TA)/θJA or the number given in the Absolute Maximum Ratings,
whichever is lower. For the LM4880, TJMAX = 150°C, and the typical junction-to-ambient thermal resistance is 170°C/W for package
D0008A and 107°C/W for package P0008E.
(4) Human body model, 100 pF discharged through a 1.5 kΩ resistor.
(5) Machine model, 220 pF–240 pF discharged through all pins.
2
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Product Folder Links: LM4880
Copyright © 1995–2013, Texas Instruments Incorporated



Part Number LM4880
Description Dual 250mW Audio Power Amplifier
Maker etcTI
Total Page 3 Pages
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