NCP4894
NCP4894 is Differential Audio Power Amplifier manufactured by onsemi.
feature and the excellent audio characteristics of the NCP4894 are a guarantee of a high quality sound, for example, in mobile phones applications. With a 10% THD+N value the NCP4894 is capable of delivering 1.8 W of continuous average power to an 8.0 W load from a 5.5 V power supply. With the same load conditions and a 5.0 V battery voltage, it ensures 1.0 W to be delivered with less than 0.01% distortion.
The NCP4894 provides high quality audio while requiring few external ponents 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 9- Pin Flip- Chip, Micro- 10 and DFN10 3x3 mm packages.
Features
- Differential Amplification
- Shutdown High or Low Selectivity
- 1.0 W to an 8.0 W Load from a 5.0 V Power Supply
- Superior PSRR: Direct Connection to the Battery
- “Pop and Click” Noise Protection Circuit
- Ultra Low Current Shutdown Mode
- 2.2 V- 5.5 V Operation
- External Gain Configuration Capability
- External Turn- on Configuration Capability
- Thermal Overload Protection Circuitry
- Pb- Free Packages are Available
Typical Applications
- Portable Electronic Devices
- PDAs
- Mobile Phones http://onsemi.
MARKING DIAGRAMS
9- PIN FLIP- CHIP FC SUFFIX CASE 499AL
A3 xxx G AYWW
C1
A1
8 1
Micro- 10 DM SUFFIX CASE 846B xxxx AYWG
DFN10
MN SUFFIX xxx
CASE 485C
ALYWG
1G xxxx = Specific Device Code A = Assembly Location L = Wafer Lot Y = Year W, WW = Work Week G = Pb- Free Package (Note:...