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/Title (NCP2991 - 1.35 W Audio Power Amplifier with Selectable Fast Turn On Time)
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ON Semiconductor
NCP2991 - 1.35 W Audio Power Amplifier with Selectable Fast Turn On Time
The NCP2991 is an audio power amplifier designed for portable
communication device applications such as mobile phone
applications. The NCP2991 is capable of delivering 1.35 W of
continuous average power to an 8.0 Ohm BTL load from a 5.0 V power
supply, and 1.1 W to a 4.0 Ohm BTL load from a 3.6 V power supply.
The NCP2991 provides high quality audio while requiring few
external components and minimal power consumption. It features a
low−power consumption shutdown mode, which is achieved by
driving the SHUTDOWN pin with logic low.
The NCP2991 contains circuitry to prevent from “pop and click”
noise that would otherwise occur during turn−on and turn−off
transitions. It is a zero pop noise device when a single ended or a
differential audio input is used.
For maximum flexibility, the NCP2991 provides an externally
controlled gain (with resistors). In addition, it integrates 2 different
Turn On times (15 ms or 30 ms) adjustable with the TON pin.
Due to its superior PSRR, it can be directly connected to the
battery, saving the use of an LDO.
2009-11-18T10:06:34-07:00
BroadVision, Inc.
2020-11-19T13:48:30+01:00
2020-11-19T13:48:30+01:00
Acrobat Distiller 8.1.0 (Windows)
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