lm4811

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lm4811 的货源和报价

lm4811 的相关技术信息

LM4811 - LM4811 Dual 105mW Headphone Amplifier with Digital Volume Control and Shutdown Mode

Features

• Digital volume control range from +12dB to -33dB

• LD and MSOP surface mount packaging

• "Click and Pop" suppression circuitry

• No bootstrap capacitors required

• Low shutdown current

Key Specification

THD+N at 1kHz, 105mW continuous average output power into 16 0.1% (typ)

THD+N at 1kHz, 70mW continuous average power into 32 0.1% (typ)

Shutdown Current 0.3µA (typ)

General Description
The LM4811 is a dual audio power amplifier capable of delivering 105mW per channel of continuous average power into a 16 load with 0.1% (THD+N) from a 5V power supply.
Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. More...

Applications

• Cellular Phones

• MP3, CD, DVD players

• PDA's

• Portable electronics

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

LM4811LD LLP 10 STD
NOPB 1
3 235
260 RoHS Full production N/A

1K+ $0.50 reel
of
1000 ZXYTT
G11

6 weeks 5000

LM4811LDX LLP 10 NOPB 3 260 RoHS Full production N/A
1K+ $0.50 reel
of
4500 ZXYTT
G11

6 weeks 40000

LM4811MM MINI SOIC 10 STD
NOPB 1
1 260
260 RoHS Full production N/A

1K+ $0.50 reel
of
1000 ZXTT
G11

6 weeks 2000

LM4811MMX MINI SOIC 10 STD
NOPB 1
1 260
260 RoHS Full production N/A
1K+ $0.50 reel
of
3500 ZXTT
G11

6 weeks 7500

General Description

The LM4811 is a dual audio power amplifier capable of delivering 105mW per channel of continuous average power into a 16 load with 0.1% (THD+N) from a 5V power supply.

Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. Since the LM4811 does not require bootstrap capacitors or snubber networks, it is optimally suited for low-power portable systems.

The LM4811 features a digital volume control that sets the amplifier's gain from +12dB to -33dB in 16 discrete steps using a two-wire interface.

The unity-gain stable LM4811 also features an externally controlled, active-high, micropower consumption shutdown mode. It also has an internal thermal shutdown protection mechanism.

Typical Application
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Parametric Table expand

Parametric Table collapse

Supply Range +2.0 - +5.5 V

PowerAtSixteenOhms OnePercentTHD 0.13 Watt

Channels 2 Channels

Volume Control Up/Down

Exposed DAP Yes

Capless Headphone No

Supply Range +2.0 - +5.5 V

User Supply 5 Volt

PowerAtEightOhms OnePercentTHD 0.15 Watt

PowerAtSixteenOhms OnePercentTHD 0.13 Watt

PowerAtEightOhms TenPercentTHD 0.18 Watt

PowerAtSixteenOhms TenPercentTHD 0.16 Watt

SNR 106 dB

SNR Conditions Po=.08W

PSRR 60 dB

PSRR Conditions f=217 Hz

THD 0.03 %

THD Conditions Po=50mW @ R=32 ohms, f=20Hz to 20kHz

Shutdown Type High

Channels 2 Channels

Temperature Min -40 deg C

Temperature Max 85 deg C

View Using Catalog

Typical Performance
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Connection Diagram
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