ZXCD1000
VCC
D2
A1a
R4
47k
R5
56R
Q1
ZXM64P03X
D2
C18
C10
68µF
100n
A1b
L1
ZXFN1000
1/2 NE5532
AUDIO INPUT
C2
22µF
C11
C3
R16
2k7
1
100n
D1
C13 C15 C34
100n
16
15
14
13
12
11
10
9
22µF
100µF
20uH
C17
100n
A4b
R1
100R
U2
22µF
R3
56R
Q2
ZXM64N03X
ZXCD1000
Audio A
Triangle A
OscA
Dist
Cosc
OscB
Triangle B
Audio B
U1
5V5
Out A
9VA
VCC
9VB
Gnd2
Out B
Gnd
C23
C27
470n
470n
C24
470n
C1
2n2
Gnd INPUT
C8
2n2
2
C4
47n
3
4
5
6
D1
A4a
12V REG
R2
47k
SPEAKER A
R13
2k7
R17
****
VCC
2
GND
6
12V REG
R10
10k
R14
2k7
C6
270pF
C5
47n
7
8
D3
A1a
R6
47k
R7
C12 C14 C16
100n
22µF
100µF
56R
C35
Q3
ZXM64P03X
L2
****
SPEAKER B
1/2 NE5532
C7
R11
2k7
U2
22µF
R15
2k7
D3
C19
100n
A1b
ZXFN1000
20uH
C9
2n2
R12
2k7
C22
22µF
C21
100n
D4
C20
100n
A4b
R8
56R
Q4
ZXM64N03X
C28
470n
C25
470n
C26
470n
78L12
U3
VCC
1
VI
VO
3
12V REG
D4
A4a
R9
47K
ISSUE 1 - MARCH 2001
C29
2200µF
C32
100µF
C33
100n
C30
100n
C31
22µF
R17 / C35 are optional components
Figure 4
Zetex Class D 25W Mono Open Loop Solution
ETC [ ETC ]
