LM4871

LM4871 的PDF资料

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LM4871 的货源和报价

LM4871 的相关技术信息

LM4863 - Dual 2.2W Audio Amplifier Plus Stereo Headphone Function

Features

• Stereo headphone amplifier mode

• "Click and pop" suppression circuitry

• Unity-gain stable

• Thermal shutdown protection circuitry

• SOIC, TSSOP, exposed-DAP TSSOP, and LLP packages

* Not recommended for new designs. Contact NSC Audio Marketing.

Key Specification

P_O at 1% THD+N

LM4863LQ, 3, 4 loads

2.5W(typ), 2.2W(typ)

LM4863MTE, 3, 4 loads

2.5W(typ), 2.2W(typ)

LM4863MTE, 8 load

1.1W(typ)

LM4863, 8

1.1W(typ)

Single-ended mode THD+N at 75mW into 32

0.5%(max)

Shutdown current

0.7µA(typ)

Supply voltage range

2.0V to 5.5V

General Description
The LM4863 is a dual bridge-connected audio power amplifier which, when connected to a 5V supply, will deliver 2.2W to a 4 load or 2.5W to a 3 load with less than 1.0% THD+N. More...

Applications

• Multimedia monitors

• Portable and desktop computers

• Portable televisions

Typical Application
click for larger image

Parametric Table expand

Parametric Table collapse

Supply Range +2.0 - +5.5 V

PowerAtEightOhms OnePercentTHD 1.1 Watt

PowerAtEightOhms TenPercentTHD 1.5 Watt

THD 0.3 %

THD Conditions Po=1W @ Vs=5V, R=8 ohms, 20Hz-20kHz, Po=2W @ Vs=5V, R=4 ohms, 20Hz-20kHz

Beep Detect No

Supply Range +2.0 - +5.5 V

User Supply 5 Volt

PowerAtFourOhms OnePercentTHD 2.2 Watt

PowerAtEightOhms OnePercentTHD 1.1 Watt

PowerAtFourOhms TenPercentTHD 2.7 Watt

PowerAtEightOhms TenPercentTHD 1.5 Watt

SNR 98 dB

SNR Conditions Pout=1.1W

PSRR 67 dB

THD 0.3 %

THD Conditions Po=1W @ Vs=5V, R=8 ohms, 20Hz-20kHz, Po=2W @ Vs=5V, R=4 ohms, 20Hz-20kHz

Audio Mux Yes

Shutdown Type High

Temperature Min -40 deg C

Temperature Max 85 deg C

View Using Catalog

Typical Performance
click for larger image

Connection Diagram
click for larger image

Package Availability, Models, Samples & Pricing

Part Number Package Factory Lead Time Models Budgetary Pricing Std
Pack
Size Package
Marking
Format

Type Pins Spec. MSL
Rating Peak
Reflow RoHS
Report Weeks Qty Qty $US each

LM4863LQ LLP 24 STD
NOPB 1
3 235
260 RoHS Full production N/A

1K+ $1.41 reel
of
1000 NS
UZXYTT
L4863

6 weeks 2000

LM4863LQX LLP 24 RoHS Full production N/A
1K+ $1.41 reel
of
4500 NS
UZXYTT
L4863

N/A 5000

LM4863M SOIC WIDE 16 STD
NOPB 2A
3 220
260 RoHS Full production N/A

1K+ $1.35 rail
of
45 NSUZXYTT
LM4863M

6 weeks 500

LM4863MX SOIC WIDE 16 STD
NOPB 2A
3 220
260 RoHS Full production N/A
1K+ $1.35 reel
of
1000 NSUZXYTT
LM4863M

6 weeks 5000

LM4863MT TSSOP 20 STD
NOPB 1
1 260
260 RoHS Full production N/A

1K+ $1.00 rail
of
73 NSUZXYTT
LM4863
MT

6 weeks 500

LM4863MTX TSSOP 20 STD
NOPB 1
1 260
260 RoHS Full production N/A
1K+ $1.00 reel
of
2500 NSUZXYTT
LM4863
MT

6 weeks 7500

LM4863MTE TSSOP EXP PAD 20 STD
NOPB 1
1 260
260 RoHS Full production N/A

1K+ $1.00 rail
of
73 NSUZXYTT
LM4863
MTE

6 weeks 2000

LM4863MTEX TSSOP EXP PAD 20 STD
NOPB 1
1 260
260 RoHS Full production N/A
1K+ $1.00 reel
of
2500 NSUZXYTT
LM4863
MTE

General Description

The LM4863 is a dual bridge-connected audio power amplifier which, when connected to a 5V supply, will deliver 2.2W to a 4 load or 2.5W to a 3 load with less than 1.0% THD+N. In addition, the headphone input pin allows the amplifiers to operate in single-ended mode when driving stereo headphones.

Boomer audio power amplifiers were designed specifically to provide high quality output power from a surface mount package while requiring few external components. To simplify audio system design, the LM4863 combines dual bridge speaker amplifiers and stereo headphone amplifiers on one chip.

The LM4863 features an externally controlled, low-power consumption shutdown mode, a stereo headphone amplifier mode, and thermal shutdown protection. It also utilizes circuitry to reduce "clicks and pops" during device turn-on.