LM1875   
20-W Audio Power Amplifier 		Click link to Download

Features
•Up to 30 watts output power
•AVO typically 90 dB
•Low distortion: 0.015%, 1 kHz, 20 W
•Wide power bandwidth: 70 kHz
•Protection for AC and DC short circuits to ground
•Thermal protection with parole circuit
•High current capability: 4A
•Wide supply range 16V-60V
•Internal output protection diodes
•94 dB ripple rejection
•Plastic power package TO-220

Description

The LM1875 is a monolithic power amplifier offering very low distortion and high quality performance for consumer audio applications.

The LM1875 delivers 20 watts into a 4 or 8 load on ±25V supplies. Using an 8 load and ±30V supplies, over 30 watts of power may be delivered. The amplifier is designed to operate with a minimum of external components. Device overload protection consists of both internal current limit and thermal shutdown.

The LM1875 design takes advantage of advanced circuit techniques and processing to achieve extremely low distortion levels even at high output power levels. Other outstanding features include high gain, fast slew rate and a wide power bandwidth, large output voltage swing, high current capability, and a very wide supply range. The amplifier is internally compensated and stable for gains of 10 or greater.

Applications
•High performance audio systems
•Bridge amplifiers
•Stereo phonographs
•Servo amplifiers
•Instrument systems



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                                              LM1875
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Typical Application
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Connection Diagram
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Typical Performance
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ParametersValues
Power@ 4Ohms, 1% THD 20 Watt
Power@ 8Ohms, 1% THD 25 Watt
Power@ 8Ohms, 10% THD 30 Watt
THD 0.022 %
PSRR 95 dB
Channels 1 Channels
Special Features AvCl>10
THD Conditions Pout=20W, 4ohm load, 1kHz
User Supply 50 Volt
Supply Range +20 - +60V
Supply Min 16 Volt
Supply Max 60 Volt
Gain Bandwidth 5.5 MHz
Slew Rate 8 Volts/usec
Temperature Min 0 deg C
Temperature Max 70 deg C

Datasheets
TitleSizeDateOther
Language
LM1875 20W Audio Power Amplifier482
Kbytes		10-Jul-02日本語

Part Number(s)
(NSID)		Top ViewAvailabilityCurrent Reported StockBudgetary PricingStandard Pack Size
LM1875T/NOPB
LM1875T

RoHS Status



TO-220		Full production
Lead Time: 16 weeks

Samples
DistributorRegionQty
AVNET-EMWorldwide444
DIGIKEYWorldwide485
FARNELLEurope and Asia1833
FUTUREWorldwide1100
KEIKONGAsia Pacific83420
NEWARKAmericas490
RS COMPONENTSWorldwide1105
TAYLORAmericas1392
$1.66 each at 1K+ pcsrail
of
45

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/packaging/leadfree.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/quality/green.

National's certificate of product compliance is located at RoHS Status.

Part Number(s)
(NSID)		Top ViewTypePinsMSL RatingPeak ReflowRoHS
Status		CAD SymbolsModelsPackage
Marking
Format
LM1875T/NOPB
LM1875T
TO-22051
1		NA
NA		DetailN/AN/A
NSUZXYTTE#
LM1875T

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/packaging/leadfree.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/quality/green.

National's certificate of product compliance is located at RoHS Status.

Design Tools
TitleSizeDate
Amplifiers Selection Guide software for Windows  

CAD Symbols and Models
N/A
 Models
N/A

[Information as of 9-Feb-2010]