NCP2817 Datasheet, PDF (1/10 Pages) ON Semiconductor – Headphone Amplifier

NCP2817
NOCAP] LongPlay
Headphone Amplifier
NCP2817 is a dual LongPlay true ground headphone amplifier
designed for portable communication device applications such as
mobile phones. This part is capable of delivering typical 27 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. It offers
significant space and cost savings compared to a typical stereo
application.
NCP2817 is available with internal gain of −1.5 V/V. 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 from “Pop & Click” noise that would otherwise
occur during turn−on and turn−off transitions. The device is available
in 12 bump CSP package (1.62 x 1.22, 0.4P) 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
• High SNR Performance (100 dB)
• “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 − 5.5 V Operation
• Thermal Overload Protection Circuitry
• CSP 1.62 x 1.22, 0.4P
• 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
www.onsemi.com
12 PIN CSP
FC SUFFIX
CASE 499BJ
MARKING
DIAGRAM
817BC
ALYWW
G
A = Assembly Location
L = Wafer Lot
Y = Year
WW = Work Week
G = Pb−Free Package
PIN ASSIGNMENT
A1
A2
A3
A4
CPM
PVM
INL
INR
B1
B2
B3
B4
PGND
/SD
AGND
SGND
C1
C2
C3
C4
CPP
VP
OUTL
OUTR
(Top View)
12−Pin 1.2 x 1.6 mm CSP
ORDERING INFORMATION
See detailed ordering and shipping information on page 9 of
this data sheet.
© Semiconductor Components Industries, LLC, 2015
1
November, 2015 − Rev. 0
Publication Order Number:
NCP2817/D