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Input Stage. LME49811 Datasheet

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Input Stage. LME49811 Datasheet






LME49811 Stage. Datasheet pdf. Equivalent




LME49811 Stage. Datasheet pdf. Equivalent





Part

LME49811

Description

High Fidelity 200 Volt Power Amplifier Input Stage

Manufacture

National Semiconductor

Datasheet
Download LME49811 Datasheet


National Semiconductor LME49811

LME49811; LME49811 High Fidelity 200 Volt Power Am plifier Input Stage with Shutdown LME4 9811 Audio Power Amplifier Series www. DataSheet4U.com November 11, 2009 Hig h Fidelity 200 Volt Power Amplifier Inp ut Stage with Shutdown General Descript ion The LME49811 is a high fidelity aud io power amplifier input stage designed for demanding consumer and pro-audio a pplications. Ampli.


National Semiconductor LME49811

fier output power may be scaled by chang ing the supply voltage and number of ou tput devices. The LME49811 is capable o f driving an output stage to deliver in excess of 500 watts single-ended into an 8 ohm load in the presence of 10% hi gh line headroom and 20% supply regulat ion. The LME49811 includes thermal shut down circuitry that activates when the die temperature e.


National Semiconductor LME49811

xceeds 150°C. The LME49811's shutdown f unction when activated, forces the LME4 9811 into shutdown state. Key Specific ations ■ Wide operating voltage ran ge ■ PSRR (f = DC) ■ THD+N (f = 1kHz) ■ Output Drive Current ±20V to ±100V 115dB (typ) 0.00035% (typ) 9 mA Features ■ ■ ■ ■ ■ Very h igh voltage operation Scalable output p ower Minimum external components External compe.



Part

LME49811

Description

High Fidelity 200 Volt Power Amplifier Input Stage

Manufacture

National Semiconductor

Datasheet
Download LME49811 Datasheet




 LME49811
LME49811
November 11, 2009
www.DataSheet4U.com
Audio Power Amplifier Series
High Fidelity 200 Volt Power Amplifier Input Stage with
Shutdown
General Description
The LME49811 is a high fidelity audio power amplifier input
stage designed for demanding consumer and pro-audio ap-
plications. Amplifier output power may be scaled by changing
the supply voltage and number of output devices. The
LME49811 is capable of driving an output stage to deliver in
excess of 500 watts single-ended into an 8 ohm load in the
presence of 10% high line headroom and 20% supply regu-
lation.
The LME49811 includes thermal shut down circuitry that ac-
tivates when the die temperature exceeds 150°C. The
LME49811's shutdown function when activated, forces the
LME49811 into shutdown state.
Key Specifications
■ Wide operating voltage range
■ PSRR (f = DC)
■ THD+N (f = 1kHz)
■ Output Drive Current
Features
Very high voltage operation
Scalable output power
Minimum external components
External compensation
Thermal Shutdown
±20V to ±100V
115dB (typ)
0.00035% (typ)
9mA
Applications
Powered subwoofers
Pro audio
Powered studio monitors
Audio video receivers
Guitar Amplifiers
High voltage industrial applications
Typical Application
FIGURE 1. Typical Audio Amplifier Application Circuit
Overture® is a registered trademark of National Semiconductor Corporation.
© 2009 National Semiconductor Corporation 300048
30004862
www.national.com





 LME49811
www.DataSheet4U.com
Typical Audio Amplifier Application Circuit
30004862
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2





 LME49811
Connection Diagram
www.DataSheet4U.com
Pin Descriptions
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
30004860
Top View
See Order Number LME49811TB
NS = National Logo
U = Fabrication plant code
Z = Assembly plant code
XY = 2 Digit date code
TT = Die traceability
TB = Package code
Pin Name
NC
SD
GND
IN+
IN-
Comp
NC
NC
NC
-VEE
NC
NC
Sink
Source
+VCC
Description
No Connect, Pin electrically isolated
Shutdown Control
Device Ground
Non-Inverting Input
Inverting Input
External Compensation Connection
No Connect, Pin electrically isolated
No Connect, Pin electrically isolated
No Connect, Pin electrically isolated
Negative Power Supply
No Connect, Pin electrically isolated
No Connect, Pin electrically isolated
Output Sink
Output Source
Positive Power Supply
3 www.national.com



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