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Details, datasheet, quote on part number:LM2877
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| Part: | LM2877 |
| Category: | Multimedia => Audio => Amplifiers => Power Amplifiers => Stereo/Quad Channel |
| Description: | Dual 4-w Audio Power Amplifier (discontinued) |
| Company: | National Semiconductor Corporation |
| Datasheet: | Download LM2877 datasheet File size : 207 kB |
| Request For quote: | Find where to buy LM2877
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Datasheet text preview:
LM2877 Dual 4W Audio Power Amplifier
February 1995
LM2877 Dual 4W Audio Power Amplifier
General Description
The LM2877 is a monolithic dual power amplifier designed to deliver 4W channel continuous into 8X loads The LM2877 is designed to operate with a low number of external components and still provide flexibility for use in stereo e phonographs tape recorders and AM-FM stereo receivers tc Each power amplifier is biased from a common internal regulator to provide high power supply rejection and output Q point centering The LM2877 is internally compensated for all gains greater than 10 and comes in an 11-lead sinF gle-in-line package
Y Y Y Y Y
Wide supply range 6-24V Very low cross-over distortion Low audio band noise AC short circuit protected Internal thermal shutdown
Applications
Y Y Y
eatures
Y Y Y
Y Y Y Y
4W channel b 68 dB ripple rejection output referred b 70 dB channel separation output referred
Multi-channel audio systems Stereo phonographs Tape recorders and players AM-FM radio receivers Servo amplifiers Intercom systems Automotive products
Connection Diagram
(Single-In-Line Package)
TL H 7933 1
Top View Order Number LM2877P See NS Package Number P11A
C Pin 6 must be connected to GND
1995 National Semiconductor Corporation
TL H 7933
RRD-B30M75 Printed in U S A
Absolute Maximum Ratings
p If Military Aerospace specified devices are required lease contact the National Semiconductor Sales S Office Distributors for availability and specifications upply Voltage Input Voltage Operating Temperature 26V
g 0 7V 0 C to a 70 C
Storage Temperature Junction Temperature Lead Temperature (Soldering 10 sec ) Thermal Resistance iJC iJA
b 65
C to a 150 C 150 C 260 C
10 C W 55 C W
Electrical Characteristics VS e 20V P
arameter Total Supply Current Operating Supply Voltage Output Power Channel PO e 0W
TTAB e 25 C RL e 8X AV e 50 (34 dB) unless otherwise specified Min Typ 25 6 Max 50 24 45 36 19 10 01 0 07 0 07 0 25 0 20 0 15 VSb4 Units mA V W W W W % % % % % % Vp-p
Conditions
f e 1 kHz THD e 10% TTAB e 25 VS e 20V VS e 18V VS e 12V RL e 4X VS e 12V RL e 8X f e 1 kHz VS e 20V PO e 50 mW Channel PO e 1W Channel PO e 2W Channel f e 1 kHz VS e 12V RL e 4X PO e 50 mW Channel PO e 500 mW Channel PO e 1W Channel RL e 8X
C
40 15
Distortion THD
1
1
Output Swing Channel Separation
OF e 50 mF CIN e 0 1 mF f e 1 kHz C utput Referred VS e 20V VO e 4 Vrms VS e 7V VO e 0 5 Vrms
b 50 b 70 b 60
dB dB
PSRR Power Supply Rejection Ratio
CF e 50 mF CIN e 0 1 mF f e 120 Hz Output Referred VS e 20V VRIPPLE e 1 Vrms VS e 7V VRIPPLE e 0 5 Vrms Equivalent Input Noise RS e 0 CIN e 0 1 mF BW e 20 Hz 20 kHz Output Noise Wideband RS e 0 CIN e 0 1 mF AV e 200 RS e 0 f e 1 kHz RL e 8X
b 50 b 68 b 40
dB dB mV mV dB mV nA MX 11 V V ms kHz A
Noise
25 0 80 70 15 50
Open Loop Gain Input Offset Voltage Input Bias Current Input Impedance DC Output Level Slew Rate Power Bandwidth Current Limit
Open Loop VS e 20V 9
4 10 20 65 10
Note 1 For operation at ambient temperature greater than 25 C the LM2877 must be derated based on a maximum 150 C junction temperature using a thermal resistance which depends upon device mounting techniques 2
3
TL H 7933 2
Equivalent Schematic Diagram
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