LM4890

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LM4890 的货源和报价

LM4890 的相关技术信息

LM4890 - 1 Watt Audio Power Amplifier

Features

• Available in space-saving packages: micro SMD, MSOP, SOIC, and LLP

• Ultra low current shutdown mode

• BTL output can drive capacitive loads

• Improved pop & click circuitry eliminates noises during turn-on and turn-off transitions

• 2.2 - 5.5V operation

• No output coupling capacitors, snubber networks or bootstrap capacitors required

• Thermal shutdown protection

• Unity-gain stable

• External gain configuration capability

Key Specification

PSRR at 217Hz, V_DD = 5V (Fig. 1) 62dB(typ.)

Power Output at 5.0V & 1% THD 1W(typ.)

Power Output at 3.3V & 1% THD 400mW(typ.)

Shutdown Current 0.1µA(typ.)

General Description
The LM4890 is an audio power amplifier primarily designed for demanding applications in mobile phones and other portable communication device applications. More...

Applications

• Mobile Phones

• PDAs

• Portable electronic devices

Typical Application
See Datasheet for Application Information

Parametric Table expand

Parametric Table collapse

Supply Range +2.0 - +5.5 V

PowerAtEightOhms OnePercentTHD 1 Watt

PowerAtEightOhms TenPercentTHD 1.2 Watt

THD 0.1 %

THD Conditions Po=.4Wrms@Vs=5

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

LM4890IBL MICRO SMD 9 STD 1 260 RoHS Lifetime buy N/A
1K+ $0.55 reel
of
250 XVG
I P

12 weeks 1000

LM4890IBLX MICRO SMD 9 STD 1 260 RoHS Full production N/A
1K+ $0.55 reel
of
3000 XVG
I P

12 weeks 150000

LM4890IBP MICRO SMD 8 STD 1 260 RoHS Full production N/A

1K+ $0.55 reel
of
250 XVG
I E

12 weeks 5000

LM4890IBPX MICRO SMD 8 STD 1 260 RoHS Full production N/A
1K+ $0.55 reel
of
3000 XVG
I E

12 weeks 100000

LM4890LD LLP 10 NOPB 3 260 RoHS Full production N/A

1K+ $0.55 reel
of
1000 ZXYTT
L4890

6 weeks 5000

LM4890LDX LLP 10 NOPB 3 260 RoHS Full production N/A
1K+ $0.55 reel
of
4500 ZXYTT
L4890

6 weeks 150000

LM4890M SOIC NARROW 8 STD
NOPB 1
1 235
260 RoHS Full production N/A

1K+ $0.55 rail
of
95 NSZXTT
LM48
90M

6 weeks 1000

LM4890MX SOIC NARROW 8 NOPB 1 260 RoHS Full production N/A

1K+ $0.55 reel
of
2500 NSZXTT
LM48
90M

6 weeks 7500

LM4890MM MINI SOIC 8 STD
NOPB 1
1 260
260 RoHS Full production N/A

1K+ $0.55 reel
of
1000 ZXTT
G90

6 weeks 2000

LM4890MMX MINI SOIC 8 STD
NOPB 1
1 260
260 RoHS Full production N/A
1K+ $0.55 reel
of
3500 ZXTT
G90

6 weeks 40000

LM4890ITL MICRO SMD 9 NOPB 1 260 RoHS Full production N/A

1K+ $0.50 reel
of
250 XVG
I A8

6 weeks 500

LM4890ITLX MICRO SMD 9 NOPB 1 260 RoHS Full production N/A
1K+ $0.50 reel
of
3000 XVG
I A8

6 weeks 40000

LM4890ITP MICRO SMD 8 NOPB 1 260 RoHS Full production N/A

1K+ $0.55 reel
of
250 XVG
I D1

6 weeks 500

LM4890ITPX MICRO SMD 8 NOPB 1 260 RoHS Full production N/A
1K+ $0.55 reel
of
3000 XVG
I D1

6 weeks 100000

LM4890 MDC Unpackaged Die Full production N/A
CALL tray
of
N/A -

General Description

The LM4890 is an audio power amplifier primarily designed for demanding applications in mobile phones and other portable communication device applications. It is capable of delivering 1 watt of continuous average power to an 8 BTL load with less than 1% distortion (THD+N) from a 5V_DC power supply.

Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. The LM4890 does not require output coupling capacitors or bootstrap capacitors, and therefore is ideally suited for mobile phone and other low voltage applications where minimal power consumption is a primary requirement.

The LM4890 features a low-power consumption shutdown mode, which is achieved by driving the shutdown pin with logic low. Additionally, the LM4890 features an internal thermal shutdown protection mechanism.

The LM4890 contains advanced pop & click circuitry which eliminates noises which would otherwise occur during turn-on and turn-off transitions.

The LM4890 is unity-gain stable and can be configured by external gain-setting resistors.