PT2001 Ver la hoja de datos (PDF) - Princeton Technology
Número de pieza
componentes Descripción
Fabricante
PT2001 Datasheet PDF : 4 Pages
| |||
2.2W×2 Class-D Audio Power Amp.
with Headphone Output
APPICATION CIRCUIT DIAGRAM
+5V
Tel: 886-2-66296288
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
Preliminary PT2001
L1
L2
FB
FB
C9
10uF
R-IN
L-IN
C1 0.22uF
C2 0.22uF
C3 1uF
C4 1uF
C5 0.22uF
C6 0.22uF
SW1
shutdown
1 NC
OUTRP 20
2 INRP GND
19
3 INRN GNDR 18
C7
1uF
4 VCC VDDR 17
5 HPIN OUTRN 16
6 SD
OUTLN 15
7 REF VDDL 14
C8
1uF
8 INLN GNDL 13
9 INLP GND
12
10 NC
OUTLP 11
PT2001
R1
150K
R2
L3 FB
C10
1nF
SP1
L4 FB
L5 FB
R-SPEAKER
C11
1nF
C12
1nF
SP2
C13
1nF
L6 FB
L-SPEAKER
R3
L7
C16 220uF
82
100uH
C14
0.22uF
R4
L8
C15
0.22uF
R5
1K
2 U1
10
11
R6
1K
3
1
PHONEJACK
82
100uH
C17 220uF
150K
Notes:
1. R3 and R4 is use to reduce gain when headphone is attached to the PT2001, recommend range is
from 56Ω to 82Ω value depends on headphone’s sensitivity. Larger resistance will limit the
maximum volume of headphone and also reduced residual noise.
2. Speaker Output CAN NOT use LC low pass filter because the chip would malfunction.
3. Parts List :
PTC Parts No.
L1, L2,
L3,L4,L5,L6
L7,L8
Vendor‘s
Name
3L COILS
3L COILS
Component
Type
Ferrite Bead
Inductor
Vendor No.
SMB-201209-F2-121P
SMTSDR322520C-101K
Specification
DCR<0.1Ω
Isat>3A,
Z=120Ω@100MHz
L=100µH, Isat=100mA
PT2001 PRE1.0
-3-
October , 2007
Share Link: 