Sharp SD-PX15H (serv.man20) Service Manual ▷ View online
SD-PX15H
8 – 17
ICA101, ICA201, ICA301 RH-iX0498AWZZ: 7th Order
Modulation Conversion LSI (IX0498AW)
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
Pin No.
Terminal Name
Input/Output
Function
1
VDDL
Input
Power supply terminal of Channel L digital output section.
2
OUTL(+)
Output
Channel L normal rotation output terminal.
3
OUTL(-)
Output
Channel L inversion output terminal.
4
GNDD
—
Ground terminal of the digital output section.
5
OUTR(-)
Output
Channel R inversion output terminal.
6
OUTR(+)
Output
Channel R normal rotation output terminal.
7
VDDR
Input
Power supply terminal of Channel R digital output section.
8
VDDX
Input
Power supply terminal of the oscillating section.
9
XI
Input
Crystal oscillator connection terminal. Generates clock necessary for the system.
10
XO
Output
Crystal oscillator connection terminal. Generates clock necessary for the system.
11
GNDX
—
Oscillating section ground terminal.
12*
MCK
Output
System clock output terminal.
13*
TEST
Input
Test terminal. Normally used in “L”.
14
NFR1(+)
Input
Normal rotation signal feedback input terminal of Channel L.
15
NFR2(-)
Input
Inversion signal feedback input terminal of Channel L.
16
GNDA
—
Analog ground terminal for AD converter.
17
RCH IN
Input
Channel R analog input terminal.
18
RCH VREF
Input
Channel R reference voltage terminal.
19
LCH VREF
Input
Channel L reference voltage terminal.
20
LCH IN
Input
Channel L analog input terminal.
21
RESET
Input
Reset terminal. Reset with “L”.
22
NFL2(-)
Input
Inversion signal feedback input terminal of Channel L.
23
NFL1(+)
Input
Normal rotation signal feedback input terminal of Channel L.
24
VDDA
Input
Analog power supply terminal for AD converter.
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
VDDL
VDDA
NFL1(+)
NFL2(-)
RESET
Lch IN
Lch Vref
Rch Vref
Rch IN
GNDA
NFR2(- )
NFR1(+)
TEST
OUTL(+)
OUTL(-)
GNDD
OUTR(-)
OUTR(+)
VDDR
VDDX
XI
XO
GNDX
MCK
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
VDA
NFL1(+)
NFL2(-)
RESET
Lch
IN
Lch
Vref
Rch
Vref
Rch
IN
GNDA
NFR2(-)
NFR1(+)
TEST
VDDL
OUTL(+)
OUTL(-)
GNDD
OUTR(-)
OUTR(+)
VDDR
VDDX
XI
XO
GNDX
MCK
Rch 7th order
∆Σ
Modulation Circuit
Rch 7th order
∆Σ
Modulation Circuit
Comparator
Comparator
Amplitude Doubling
Converter
Amplitude Doubling
Converter
Oscillator
Figure 8-17 BLOCK DIAGRAM OF IC
SD-PX15H
8 – 18
ICA102, ICA202, ICA302 VHiSTA505++-1: Switching Audio Power Amp. (STA505)
IN1A
29
V
CC
1A
15
17
OUT1A
OUT1A
16
GND1A
14
V
CC
1B
12
M3
M2
PROTECTIONS
&
LOGIC
REGULATORS
M5
M4
M17
M15
M16
M14
11
OUT1B
OUT1B
10
GND1B
13
V
CC
2A
7
8
OUT2A
OUT2A
9
GND2A
6
V
CC
2B
4
OUT2B
3
OUT2B
2
GND2B
5
IBIAS
23
CONFIG
24
PWRDN
25
FAULT
27
TRI-STATE
26
TH_WAR
28
IN1B
30
V
DD
21
V
DD
22
V
SS
33
V
SS
34
V
CC
SIGN
35
V
CC
SIGN
36
IN2A
31
GND-Reg
20
GND-Clean
19
IN2B
32
GNDSUB
1
Figure 8-18 BLOCK DIAGRAM OF IC
SD-PX15H
8 – 18
ICA102, ICA202, ICA302 VHiSTA505++-1: Switching Audio Power Amp. (STA505)
IN1A
29
V
CC
1A
15
17
OUT1A
OUT1A
16
GND1A
14
V
CC
1B
12
M3
M2
PROTECTIONS
&
LOGIC
REGULATORS
M5
M4
M17
M15
M16
M14
11
OUT1B
OUT1B
10
GND1B
13
V
CC
2A
7
8
OUT2A
OUT2A
9
GND2A
6
V
CC
2B
4
OUT2B
3
OUT2B
2
GND2B
5
IBIAS
23
CONFIG
24
PWRDN
25
FAULT
27
TRI-STATE
26
TH_WAR
28
IN1B
30
V
DD
21
V
DD
22
V
SS
33
V
SS
34
V
CC
SIGN
35
V
CC
SIGN
36
IN2A
31
GND-Reg
20
GND-Clean
19
IN2B
32
GNDSUB
1
Figure 8-18 BLOCK DIAGRAM OF IC
SD-PX15H
8 – 18
ICA102, ICA202, ICA302 VHiSTA505++-1: Switching Audio Power Amp. (STA505)
IN1A
29
V
CC
1A
15
17
OUT1A
OUT1A
16
GND1A
14
V
CC
1B
12
M3
M2
PROTECTIONS
&
LOGIC
REGULATORS
M5
M4
M17
M15
M16
M14
11
OUT1B
OUT1B
10
GND1B
13
V
CC
2A
7
8
OUT2A
OUT2A
9
GND2A
6
V
CC
2B
4
OUT2B
3
OUT2B
2
GND2B
5
IBIAS
23
CONFIG
24
PWRDN
25
FAULT
27
TRI-STATE
26
TH_WAR
28
IN1B
30
V
DD
21
V
DD
22
V
SS
33
V
SS
34
V
CC
SIGN
35
V
CC
SIGN
36
IN2A
31
GND-Reg
20
GND-Clean
19
IN2B
32
GNDSUB
1
Figure 8-18 BLOCK DIAGRAM OF IC
