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© Semiconductor Components Industries, LLC, 2007
1
Publication Order Number
:
novembre, 2010 – Rev1.0
NCP2824EVB/D
NCP2824:
Evaluation Board Manual
Prepared by: Dominique ROMEO
Overview
The NCP2824 is a Filterless Class D amplifier
capable of delivering up to 2.4 W to a 4 Ω load
with a 5 V supply voltage. With the same battery
voltage, it can deliver 1.2 W to an 8 Ω load with
less than 1% THD+N. The Non-clipping function
adjusts automatically the output voltage in order to
control the distortion when an excessive input is
applied to the amplifier. This adjustment is done
thanks to an Automatic Gain Control circuitry
(AGC) built-in the chip. A simple Single wire
interface allows to enable/disable the non Clipping
function and also to configure the maximum
distortion level in the output. A programmable
power limit function is also embedded in order to
protect speakers from damage caused by an
excessive sound level.
..
The intent of the demo boards is to illustrate
typical operation of the NCP2824 device for
laboratory characterization. The NCP2824EVB
schematic is depicted Figure 1
Title
Size Document Number Rev
Date: Sheet of
NCP2824 EVB TLS-P-001-A-0310-DR <RevCode>
NCP2824 EVB
Custom
1 1Friday, November 05, 2010
U1
NCP2824
INP
A1
VDD
A2
OUTP
A3
AGND
B1
NC
B2
PGND
B3
INM
C1
CNTL
C2
OUTM
C3
C1
100n
C2
100n
C3
4.7µF
0
OUTN
OUTP
0 0
J1
Jumper3
1
1
2
2
3
3
0
Vdd
J2
Jumper2
1
1
2
2
J3
Jumper2
1
1
2
2
0
0
J4
CUT H
1
1
2
2
J5
CUT H
1
1
2
2
INPF
J6
TP 1.0D
1
1
J7
TP 1.0D
1
1
J8
TP 1.0D
1
1
CNTL
J9
TP 1.0D
1
1
Vdd
J10
TP 1.0D
1
1
J11
TP 1.0D
1
1
J13
GND
1
1
2
2
0
0
INMF
J14
CON2
1
1
2
2
0
J15
CON2
1
1
2
2
C4
NC
0
C5
100µF-NC
C6
4.7µF
0
J16
FIX 3.2 H
1
1
J17
FIX 3.2 H
1
1
J18
FIX 3.2 H
1
1
J19
FIX 3.2 H
1
1
0
J12
TP 1.0D
1
1
ENABLE- SINGLE WIRE
BOARD FIXATION HOLES
POWER SUPPLY
SPEAKER CONNECTION
Figure 1. NCP2824EVB Schematic
http://onsemi.com
EVALUATION BOARD MANUAL
