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Products > Audio Products > Boomer Audio Power Amplifiers <6V,<3W > LM4890

LM4890 Product Folder

1 Watt Audio Power Amplifier

Generic P/N 4890

Parametric Table

Temperature Min (deg C)	-40
Temperature Max (deg C)	85
Channels (Channels)	1
User Supply (Volt)	5
Supply Range	+2.0 - +5.5 V
PowerAtFourOhms OnePercentTHD (Watt)	-
PowerAtEightOhms OnePercentTHD (Watt)	1
PowerAtFourOhms TenPercentTHD (Watt)	-

PowerAtEightOhms TenPercentTHD (Watt)	1.20
SNR (dB)	105
SNR Conditions	-
PSRR (dB)	62
PSRR Conditions	f = 1kHz
THD (%)	.10
THD Conditions	Po=.4Wrms@Vs=5
Audio Mux	-

Datasheet

Title	Size in Kbytes	Date	View Online	Download	Receive via Email
LM4890 Boomer ® Audio Power Amplifier Series 1 Watt Audio Power Amplifier	1208 Kbytes	2-May-03	View Online	Download	Receive via Email
LM4890 Boomer ® Audio Power Amplifier Series 1 Watt Audio Power Amplifier (JAPANESE)	924 Kbytes

If you have trouble printing or viewing PDF file(s), see Printing Problems.

Package Availability, Models, Samples & Pricing

Part Number

Package

Status

Models

Samples &
Electronic
Orders

Budgetary Pricing

Std
Pack
Size

Package
Marking

Type

Pins

MSL/Lead-Free Availability

Lead
Time

Qty

SPICE

IBIS

Qty

$US each

LM4890IBL

microSMD

Status

Full production

N/A

1K+

$0.70

reel
of
250

XVG
I P

10-12 weeks

25000

LM4890IBLX

microSMD

Status

Full production

N/A

1K+

$0.70

reel
of
3000

XVG
I P

10-12 weeks

500000

LM4890IBP

microSMD

Status

Full production

N/A

1K+

$0.70

reel
of
250

XVG
I E

10-12 weeks

160000

LM4890IBPX

microSMD

Status

Full production

N/A

1K+

$0.70

reel
of
3000

XVG
I E

10-12 weeks

250000

LM4890LD

LLP

Status

Full production

N/A

1K+

$0.70

reel
of
1000

ZXYTT
L4890

10-12 weeks

100000

LM4890LDX

LLP

Status

Full production

N/A

1K+

$0.70

reel
of
4500

ZXYTT
L4890

10-12 weeks

25000

LM4890M

SOIC NARROW

Status

Full production

N/A

1K+

$0.60

rail
of
95

NSXYTT
LM48
90M

8-10 weeks

100000

LM4890MX

SOIC NARROW

Status

Full production

N/A

1K+

$0.60

reel
of
2500

NSXYTT
LM48
90M

8 weeks

100000

LM4890MM

MINI SOIC

Status

Full production

N/A

1K+

$0.60

reel
of
1000

ZXTT
G90

15-17 weeks

250000

LM4890MMX

MINI SOIC

Status

Full production

N/A

1K+

$0.60

reel
of
3500

ZXTT
G90

15-17 weeks

150000

LM4890ITLX

microSMD

Status

Full production

N/A

1K+

$0.70

reel
of
3000

XVG
I A8

10-12 weeks

50000

LM4890ITP

microSMD

Status

Full production

N/A

reel
of
N/A

XVG
I D1

12-14 weeks

25000

LM4890ITPX

microSMD

Status

Full production

N/A

reel
of
N/A

XVG
I D1

10-12 weeks

25000

LM4890 MDC

Unpackaged Die

Full production

N/A

tray
of
N/A

N/A

LM4890 MWC

Wafer

Full production

N/A

wafer jar
of
N/A

N/A

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.

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.)

Applications

Mobile Phones
PDAs
Portable electronic devices

Reliability Metrics

Part Number	Process	Sample Size (EFR)	Device Hours	Long Term Failure Rates (FITS)	MTTF
LM4890LD	CS065	8800	600000	6	169643205
LM4890LDX	CS065	8800	600000	6	169643205
LM4890 MDC	CS065	8800	600000	6	169643205
LM4890 MWC	CS065	8800	600000	6	169643205
LM4890M	CS065	8800	600000	6	169643205
LM4890MM	CS065	8800	600000	6	169643205
LM4890MMX	CS065	8800	600000	6	169643205
LM4890MX	CS065	8800	600000	6	169643205
LM4890IBP	CS065	8800	600000	6	169643205
LM4890IBPX	CS065	8800	600000	6	169643205

For more information on Reliablitity Metrics, please click here.

[Information as of 15-Jan-2004]

LM4890 Product Folder

Datasheet

Package Availability, Models, Samples & Pricing

General Description

Features

Key Specification

Applications

Reliability Metrics