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/Title (NCP2815 - NOCAP Longplay Headphone Amplifier)
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BroadVision, Inc.
2020-11-23T14:53:23+08:00
2012-01-30T10:32:34-07:00
2020-11-23T14:53:23+08:00
application/pdf
NCP2815 - NOCAP Longplay Headphone Amplifier
ON Semiconductor
NCP2815 is a dual LongPlay true ground headphone amplifier
designed for portable communication device applications such as
mobile phones. This part is capable of delivering 26 mW of
continuous average power into a 32 Ohm load from a 1.8 V power supply
with a THD+N of 1%.
Based on the power supply delivered to the device, an internal
power management block generates a symmetrical positive and
negative voltage. Thus, the internal amplifiers provide outputs
referenced to Ground and the losses are reduced which helps to
increase the battery life. In this NOCAP configuration, the two
external heavy coupling capacitors can be removed. This provides a
significant space and cost savings compared to a typical stereo
application.
NCP2815 is available with an external adjustable gain (version A),
or internal gain of −1.5 V/V (version B). It reaches a superior −100 dB
PSRR and noise floor. Thus, it offers high fidelity audio sound, as well
as a direct connection to the battery. It contains circuitry to prevent
“Pop & Click” noise that would otherwise occur during turn−on and
turn−off transitions. The device is available in 12 bump CSP package
(1.2 x 1.6 mm) which helps to save space on the board.
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