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Power Amplifiers. LN4890 Datasheet

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Power Amplifiers. LN4890 Datasheet






LN4890 Amplifiers. Datasheet pdf. Equivalent




LN4890 Amplifiers. Datasheet pdf. Equivalent





Part

LN4890

Description

1W Differential Audio Power Amplifiers



Feature


LN4890 Low-Cost, Mono/Stereo, 1 W Differ ential Audio Power Amplifiers ■ Gener al Description The LN4890 is an audio p ower amplifier primarily designed for d emanding applications in mobile phones and other portable communication device applications. It is capable of deliver ing 1 watt of continuous average power to an 8Ω BTL load with less than 1% di stortion (THD+N) from.
Manufacture

natlinear

Datasheet
Download LN4890 Datasheet


natlinear LN4890

LN4890; a 5V DC power supply. Boomer audio powe r amplifiers were designed specifically to provide high quality output power w ith a minimal amount of external compon ents. The LN4890 does not require outpu t coupling capacitors or bootstrap capa citors, and therefore is ideally suited for mobile phone and other low voltage applications where minimal power consu mption is a primar.


natlinear LN4890

y requirement. The LN4890 features a low -power consumption shutdown mode, which is achieved by driving the shutdown pi n with logic low. Additionally, the LN4 890 features an internal thermal shutdo wn protection mechanism. The LN4890 con tains advanced pop & click circuitry wh ich eliminates noises which would other wise occur during turn-on and turn-off transitions. The L.


natlinear LN4890

N4890 is unity-gain stable and can be co nfigured by external gain-setting resis tors. ■ Features          Available in space-sav ing packages Ultra low current shutdown mode BTL output can drive capacitive l oads Improved pop & click circuitry eli minates noises during turn-on and turn- off transitions 2.2 - 5.0V operation No output coupling capacitors, snubber n.

Part

LN4890

Description

1W Differential Audio Power Amplifiers



Feature


LN4890 Low-Cost, Mono/Stereo, 1 W Differ ential Audio Power Amplifiers ■ Gener al Description The LN4890 is an audio p ower amplifier primarily designed for d emanding applications in mobile phones and other portable communication device applications. It is capable of deliver ing 1 watt of continuous average power to an 8Ω BTL load with less than 1% di stortion (THD+N) from.
Manufacture

natlinear

Datasheet
Download LN4890 Datasheet




 LN4890
LN4890
Low-Cost, Mono/Stereo, 1 W Differential Audio Power Amplifiers
General Description
The LN4890 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 8Ω
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
LN4890 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 LN4890 features a low-power consumption shutdown
mode, which is achieved by driving the shutdown pin with
logic low. Additionally, the LN4890 features an internal
thermal shutdown protection mechanism. The LN4890
contains advanced pop & click circuitry which eliminates
noises which would otherwise occur during turn-on and
turn-off transitions. The LN4890 is unity-gain stable and
can be configured by external gain-setting resistors.
Key Specifications
PSRR @fIN =217Hz, VDD = 5V
62dB(typ.)
Power Output@VDD= 5.0V &1% THD
1W(typ.)
Power Output @VDD=3.3V &1% THD 400mW(typ.)
Shutdown Current
0.1μA(typ.)
Features
Available in space-saving packages
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 - 5.0V operation
No output coupling capacitors, snubber networks or
bootstrap capacitors required
Thermal shutdown protection
Unity-gain stable
External gain configuration capability
Applications
Mobile Phones
PDAs
Portable electronic devices
Package
MSOP-8
SOP-8
Ordering Information
Ordering Number
LN4890MM
LN4890M
Package
MSOP-8
SOP-8
Operating Ratings
Temperature Range
TMIN ≤ TA ≤ TMAX----------------------------------------------------------------------------------------------------- −40°C ≤ TA ≤ 85°C
Supply Voltage ------------------------------------------------------------------------------------------------------------ 2.2V ≤ VDD ≤ 5.0V
Rev.1.0 Nov. 24, 2011
1
www.natlinear.com
Free Datasheet http://www.datasheet4u.com/




 LN4890
Pin Configuration
LN4890
SHUTDOWN 1
BYPASS 2
+IN 3
-IN 4
MSOP-8
(Top View)
SHUTDOWN 1
8 VO2
7 GND
6 VDD
5 VO1
BYPASS 2
+IN 3
-IN 4
SOP-8
(Top View)
Pin Function Description
Pin Number
1
2
3
4
5
6
7
8
Pin Name
SHUTDOWN
BYPASS
+IN
-IN
VO1
VDD
GND
VO2
Function Description
Chip Enable (Low Effective)
Bypass Capacitance Input Pin
Positive Input Terminal (Differential +)
Negative Input Terminal (Differential -)
Negative Output Terminal (Differential -)
Power Supply
Ground Pin
Positive Output Terminal (Differential +)
Marking Rule
MSOP-8SOP-8
Marking
LN4890
XXXX
8 VO2
7 GND
6 VDD
5 VO1
Pin 1
XXXX: Date Code
Rev.1.0 Nov. 24, 2011
2
www.natlinear.com
Free Datasheet http://www.datasheet4u.com/




 LN4890
Typical Application Circuit
Audio Input
C2
0.39uF
R2
20K
VDD
R1
20K
C3
1.0uF
R3
20K
-IN VO1
+IN VO2
BYPASS
SHUTDOWN
VDD
GND
LN4890
VDD
C1
1uF
Absolute Maximum Ratings
Parameter
Supply Voltage
Input Voltage
Operation Temperature
Storage Temperature
ESD Susceptibility
Symbol
VDD
VIN
Topr
Tstg
-
Value
-0.3—5.0
-0.3—VDD+0.3
-40—85
-65—150
2000
Unit
V
V
V
Rev.1.0 Nov. 24, 2011
3
www.natlinear.com
Free Datasheet http://www.datasheet4u.com/






Recommended third-party LN4890 Datasheet






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