NCP2704 Datasheet, PDF (1/28 Pages) ON Semiconductor – Audio Management Integrated Circuit

NCP2704
Audio Management
Integrated Circuit with
2.8 W Class D and LongPlay
True Ground Headphone
Amplifier
http://onsemi.com
The NCP2704 is a cost effective audio subsystem designed for
MARKING
portable applications such as cellular phones and portable media
DIAGRAM
player. It has been designed to cover the power audio requirements in
portable equipment: including a high fidelity Class D speaker
amplifier and a Class G equivalent LongPlay true ground headphone
amplifier. This patented headphone amplifier circuitry allows the
removal of the bulky output capacitors and minimize audio playback
current consumption with minimum external components. In addition
the user can set the output swing to have enough output dynamic even
A1
20 PIN CSP
FC SUFFIX
CASE 499BH
NCP2704
AYWW
G
when a damping resistor is added.
Through a flexible I²C interface, NCP2704 can support both single
ended and differential types of analog input signal. In both cases, it
offers a zero pop noise signature. The same interface allows a user
defined architecture with an input control, highly accurate gain setting
NCP2704 = Specific Device Code
A
= Assembly Location
Y
= Year
WW
= Work Week
G
= Pb−Free Package
capability from −60 dB to +12 dB and output control. In addition
NCP2704 offers the possibility to reduce the EMI perturbation by
lowering the rise and fall times of the Class D outputs (software
PINOUT
programmable). The Loudspeaker also amplifier includes an AGC
which performs two functions: limiter and non−clipping.
Features
• Flexible MUX Capability and Volume Control
♦ Separated Mixer Control Between Louspeaker and Headset
♦ Support Either Differential or Single−ended Input
• High Sound Quality
♦ −100 dB PSRR on Headphone Amplifier
♦ −80 dB PSRR on Loudspeaker Amplifier
♦ 0.02% THD+N at 1 kHz on Headset Amplifier
A1
IN2B
B1
IN2A
C1
NC
D1
LPN
A2
IN1B
B2
IN1A
C2
GND
D2
PVDD
A3
A4
A5
HSR HSL PVM
B3
GND
B4
I2CEN
B5
C1N
C3
C4
C5
SCL SDA GND
D3
D4
D5
LPP HSVDD C1P
♦ 0.1% THD+N at 1 kHz on Loudspeaker Amplifier
• Low EMI Filterless Class D Loudspeaker Amplifier, Programmable
High Efficiency or Low EMI Mode
• Programmable AGC: Non−Clipping or Power Limit (Loudspeaker
ORDERING INFORMATION
Output)
See detailed ordering and shipping information in the package
• Long Play True Ground Headphone Amplifier,
• 20−Bump^dimC^ehⁿi^sp^ionS^sc^sa^el^ce^tioPⁿa^ocⁿk^pa^ag^ge^e (²2⁷.^o5^{f t}x^his2^d.0^atam^sm^he)^et.
Programmable Output Swing (Up to 5 V_pp)
• I²C Control
• Software Shutdown
• No Pop and Click Noise
• TDMA Noise Free
• This is a Pb−Free Device
Typical Applications
• Cellular Phones
• Portable Media Player
• Thermal and Short−Circuit Protection
© Semiconductor Components Industries, LLC, 2010
1
November, 2010 − Rev. 0
Publication Order Number:
NCP2704/D