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NCP4894: Audio Power Amplifier, 1.8 Watt, with Selectable Shutdown

Datasheet: Audio Power Amplifier, 1.8 Watt, with Selectable Shutdown
Rev. 9 (170.0kB)
Product Overview
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The NCP4894 is a differential audio power amplifier designed for portable communication device applications. The excellent audio characteristics of the NCP4894 are a guarantee of high quality sound, for example, in mobile phone applications. With less than 0.01% distortion (THD+N), the NCP4894 is capable of delivering 1.0W of continuous average power to an 8.0Ω load from a 5.0V power and still 250mW from 2.6V.

The NCP4894 provides high quality audio while requiring few external components and minimal power consumption. It features a low-power consumption shutdown mode.To be flexible, shutdown may be enabled by either a logic high or low depending on the voltage applied on the SD MODE pin.

The NCP4894 contains circuitry to prevent from "pop and click" noise that would otherwise occur during turn-on and turn-off transitions.

For maximum flexibility, the NCP4894 provides an externally controlled gain (with resistors), as well as an externally controlled turn-on time (with bypass capacitor).

Due to its excellent PSRR, it can be directly connected to the battery, saving the use of an LDO.

This device is available in the 9-Pin Flip-Chip CSP, Micro10 and DFN 3x3 mm package.
  • Differential Amplification
  • Shutdown High or Low Selectivity
  • 1.0 W to an 8.0 load from a 5.0 V Power Supply
  • Superior PSRR: Direct Connection to the Battery
  • Pop and Click Noise Protection Circuitry
  • Ultra Low Current Shutdown Mode
  • 2.2 - 5.5 V Operation
  • External Gain Configuration Capability
  • Thermal Overload Protection Circuitry
  • External Turn-on Time Configuration Capability
Applications   End Products
  • Audio Amplification
  • Mobile Phones
  • PDAs
Technical Documentation & Design Resources
Data Sheets (1) Package Drawings (3)
Budgetary Price/Unit
Case Outline
NCP4894DMR2G Last Shipments
Halide free
NCP4894 Micro10 846B 1 260 Tape and Reel 4000  
NCP4894FCT1G Obsolete
Halide free
NCP4894 Flip-Chip-9 499AL 1 260 Die Surf Tape and Reel 3000  
NCP4894MNR2G Obsolete
Halide free
NCP4894 DFN-10 485C 1 260 Tape and Reel 3000  
Market Leadtime (weeks) : Contact Factory
PandS   (2020-09-14 00:00) : >1K
Market Leadtime (weeks) : Contact Factory
PandS   (2020-09-14 00:00) : <1K
Market Leadtime (weeks) : Contact Factory
PandS   (2020-09-14 00:00) : <1K
Case Outlines
485C    846B    499AL   
NCP4894: Audio Power Amplifier, 1.8 Watt, with Selectable Shutdown
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