NCP2815 Datasheet, PDF (1/11 Pages) ON Semiconductor – LongPlay Headphone Amplifier

NCP2815
NOCAPt LongPlay
Headphone Amplifier
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 W 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.
Features
• NOCAP Output Eliminates DC−Blocking Capacitors:
♦ Saves Board Area
♦ Saves Component Cost
♦ No Low−Frequency Response Attenuation
• LongPlay Architecture: Increase the Battery Life
• High PSRR (−100 dB): Direct Connection to the Battery
• “Pop and Click” Noise Protection Circuitry
• Internal Gain (−1.5 V/V) or External Adjustable Gain
• Ultra Low Current Shutdown Mode
• High Impedance Mode
• 1.6 V – 3.6 V Operation
• Thermal Overload Protection Circuitry
• CSP 1.2 x 1.6 mm
• These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS
Compliant
Typical Applications
• Headset Audio Amplifier for
♦ Cellular Phones
♦ MP3 player
♦ Personal Digital Assistant and Portable Media Player
♦ Portable Devices
http://onsemi.com
12 PIN CSP
FC SUFFIX
CASE 499BJ
MARKING
DIAGRAM
815xz
AYWW
G
x = A for NCP2815A
= B for NCP2815B
z = C for Backside laminate
A = Assembly Location
Y = Year
WW = Work Week
G = Pb−Free Package
Pin Configuration
A1
CPM
B1
PGND
C1
CPP
A2
A3
A4
PVM
INL
INR
B2
B3
B4
/SD
HiZ SGND
C2
C3
C4
VP OUTL OUTR
(Top View)
ORDERING INFORMATION
See detailed ordering and shipping information on page 10 of
this data sheet.
© Semiconductor Components Industries, LLC, 2012
1
January, 2012 − Rev. 1
Publication Order Number:
NCP2815/D