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LM4923

Features: Fully differential amplificationAvailable in space-saving LLP packageUltra low current shutdown modeCan drive capacitive loads up to 100pFImproved pop & click circuitry eliminates noises during turn-on and turn-off transitions2.4 - 5.5V operationNo output coupling capacitors, snubber...

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SeekIC No. : 004395892 Detail

LM4923: Features: Fully differential amplificationAvailable in space-saving LLP packageUltra low current shutdown modeCan drive capacitive loads up to 100pFImproved pop & click circuitry eliminates nois...

LM4923 Data Sheet

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Part Number:
LM4923
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

Fully differential amplification
Available in space-saving LLP package
Ultra low current shutdown mode
Can drive capacitive loads up to 100pF
Improved pop & click circuitry eliminates noises during turn-on and turn-off transitions
2.4 - 5.5V operation
No output coupling capacitors, snubber networks or bootstrap capacitors required




Application

Mobile phones
PDAs
Portable electronic devices




Pinout

Connection Diagram




Specifications

Supply Voltage................................................... 6.0V
Storage Temperature ....................−65°C to +150°C
Input Voltage .............................−0.3V to VDD +0.3V
Power Dissipation (Note 3)............ Internally Limited
ESD Susceptibility (Note 4).............................. 2000V
ESD Susceptibility (Note 5) ................................200V
Junction Temperature ......................................150°C
Thermal Resistance
JA (LLP) ...................................................140°C/W

Power@ 8Ohms, 1% THD 1.1 Watt
Power@ 8Ohms, 10% THD 1.5 Watt
THD 0.02 %
PSRR 85 dB
Supply Range +2.4 - +5.5 V
THD Conditions Po = 0.4 Wrms; f = 1kHz
PSRR Conditions 217Hz, Vripple = 200mV sine p-p
User Supply 5 Volt
Mute/Shutdown Mute
Shutdown Type High
Mono/Stereo Mono
Temperature Min -40 deg C
Temperature Max +85 deg C
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Description

The LM4923 is a fully differential audio power amplifier primarily designed for demanding applications in mobile phones and other portable communication device applications. It is capable of delivering 1.1 watt of continuous average power to an 8 BTL load with less than 1% distortion (THD+N) from a 5VDC power supply.

Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. The LM4923 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 LM4923 features a low-power consumption shutdown mode. To facilitate this, Shutdown may be enabled by logic low. Additionally, the LM4923 features an internal thermal shutdown protection mechanism.

The LM4923 contains advanced pop & click circuitry which eliminates noises which would otherwise occur during turn-on and turn-off transitions.






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