JBL SP 150 Service Manual ▷ View online
TDA8920C_1
Preliminary data sheet
Rev. 01 — 29 September 2008
5 of 40
NXP Semiconductors
TDA8920C
2
×
110 W class-D power amplifier
7.2 Pin description
8.
Functional description
8.1 General
The TDA8920C is a two-channel audio power amplifier using class-D technology.
The audio input signal is converted into a digital pulse-width modulated signal using an
analog input stage and PWM modulator; see
analog input stage and PWM modulator; see
Figure 1
. To enable the output power
transistors to be driven, the digital PWM signal is applied to a control and handshake
block and driver circuits for both the high side and low side. This level-shifts the low-power
digital PWM signal from a logic level to a high-power PWM signal switching between the
main supply lines.
block and driver circuits for both the high side and low side. This level-shifts the low-power
digital PWM signal from a logic level to a high-power PWM signal switching between the
main supply lines.
A 2nd-order low-pass filter converts the PWM signal to an analog audio signal across the
loudspeakers.
loudspeakers.
Table 3.
Pin description
Symbol
Pin
Description
TDA8920CTH
TDA8920CJ
VSSA
1
18
negative analog supply voltage
SGND
2
19
signal ground
VDDA
3
20
positive analog supply voltage
IN2M
4
21
channel 2 negative audio input
IN2P
5
22
channel 2 positive audio input
MODE
6
23
mode selection input: Standby, Mute or Operating
mode
mode
OSC
7
1
oscillator frequency adjustment or tracking input
IN1P
8
2
channel 1 positive audio input
IN1M
9
3
channel 1 negative audio input
n.c.
10
4
not connected
n.c.
11
5
not connected
n.c.
12
6
not connected
PROT
13
7
decoupling capacitor for protection (OCP)
VDDP1
14
8
channel 1 positive power supply voltage
BOOT1
15
9
channel 1 bootstrap capacitor
OUT1
16
10
channel 1 PWM output
VSSP1
17
11
channel 1 negative power supply voltage
STABI
18
12
decoupling of internal stabilizer for logic supply
n.c.
19
-
not connected
VSSP2
20
13
channel 2 negative power supply voltage
OUT2
21
14
channel 2 PWM output
BOOT2
22
15
channel 2 bootstrap capacitor
VDDP2
23
16
channel 2 positive power supply voltage
VSSD
24
17
negative digital supply voltage
JBL
150P / 230V Service Manual
Page 32 of 50
TDA8920C_1
Preliminary data sheet
Rev. 01 — 29 September 2008
34 of 40
NXP Semiconductors
TDA8920C
2
×
110 W class-D power amplifier
14. Package outline
Fig 29. Package outline SOT411-1 (DBS23P)
UNIT A
2
REFERENCES
OUTLINE
VERSION
EUROPEAN
PROJECTION
ISSUE DATE
IEC
JEDEC
JEITA
mm
4.6
4.3
4.3
A
4
1.15
0.85
0.85
A
5
1.65
1.35
1.35
DIMENSIONS (mm are the original dimensions)
Note
1. Plastic or metal protrusions of 0.25 mm maximum per side are not included.
SOT411-1
98-02-20
02-04-24
02-04-24
0
5
10 mm
scale
D
L
L
1
L
2
E
2
E
c
A
4
A
5
A
2
m
L
3
E
1
Q
w
M
b
p
1
d
Z
e
2
e
e
1
23
j
DBS23P: plastic DIL-bent-SIL power package; 23 leads (straight lead length 3.2 mm)
SOT411-1
v
M
D
x
h
Eh
non-concave
view B: mounting base side
B
β
e
1
b
p
c
D
(1)
E
(1)
Z
(1)
d
e
D
h
L
L
3
m
0.75
0.60
0.60
0.55
0.35
0.35
30.4
29.9
29.9
28.0
27.5
27.5
12
2.54
12.2
11.8
11.8
10.15
9.85
1.27
e
2
5.08
2.4
1.6
1.6
E
h
6
E
1
14
13
13
L
1
10.7
9.9
L
2
6.2
5.8
5.8
E
2
1.43
0.78
0.78
2.1
1.8
1.8
1.85
1.65
1.65
4.3
3.6
2.8
2.8
Q
j
0.25
w
0.6
v
0.03
x
45
°
β
JBL
150P / 230V Service Manual
Page 33 of 50
TDA8920C_1
Preliminary data sheet
Rev. 01 — 29 September 2008
35 of 40
NXP Semiconductors
TDA8920C
2
×
110 W class-D power amplifier
Fig 30. Package outline SOT566-3 (HSOP24)
UNIT
A4
(1)
REFERENCES
OUTLINE
VERSION
EUROPEAN
PROJECTION
ISSUE DATE
03-02-18
03-07-23
03-07-23
IEC
JEDEC
JEITA
mm
+
0.08
−
0.04
3.5
0.35
DIMENSIONS (mm are the original dimensions)
Notes
1. Limits per individual lead.
2. Plastic or metal protrusions of 0.25 mm maximum per side are not included.
SOT566-3
0
5
10 mm
scale
HSOP24: plastic, heatsink small outline package; 24 leads; low stand-off height
SOT566-3
A
max.
detail X
A2
3.5
3.2
3.2
D2
1.1
0.9
0.9
HE
14.5
13.9
13.9
Lp
1.1
0.8
0.8
Q
1.7
1.5
1.5
2.7
2.2
2.2
v
0.25
w
0.25
y
Z
8
°
0
°
θ
0.07
x
0.03
D1
13.0
12.6
12.6
E1
6.2
5.8
5.8
E2
2.9
2.5
2.5
bp
c
0.32
0.23
0.23
e
1
D
(2)
16.0
15.8
15.8
E
(2)
11.1
10.9
10.9
0.53
0.40
0.40
A3
A4
A2
(A3)
Lp
θ
A
Q
D
y
x
HE
E
c
v
M
A
X
A
bp
w
M
Z
D1
D2
E2
E1
e
24
13
1
12
pin 1 index
JBL
150P / 230V Service Manual
Page 34 of 50
PROGRAMMABLE PRECISION SHUNT REGULATOR
TL431/A /C
PROGRAMMABLE PRECISION REFERENCES
The TL431 is three-terminal adjustable shunt regulator
with specified termal stability.
with specified termal stability.
The output voltage may be set to any value between
V
REF
(Approx. 2.5V) and 36V with two external resistors.
This device has a typical output inpedance of 0.2
•
.
Active output circuitry provides a very sharp turn-on
characteristic, making this device excellent
replacement for zener diodes in many application.
characteristic, making this device excellent
replacement for zener diodes in many application.
FEATURES
•
Equivalent Full Range Temperature Coefficient 50PPM/
•
•
Temperature Compensated For Operation Over
ORDERING INFORMATION
Full Rate Operating Temperature Range
•
Adjustable Output Voltage
TL431
•
Fast Turn-on Response
TL431-A
•
Sink Current Capability 1
•
to 100
•
TL431-C
•
Low (0.2
•
Typ.) Dynamic Output Impedance
TL431F
•
Low Output Noise
TL431-AF
TL431-CF
TL431-CF
FUNCTION BLOCK DIAGRAM
HTC
TL431
TL431-A
TL431-C
TL431-C
4N
SOT-89
TO-92
Package
Device
4A
4C
4C
Marking
For more information, or to purchase call E.C.C. Inc @ 1-800-214-8769
2.5V
REF
BLOCK DIAGRAM
REFERENCE
CATHODE
ANODE
REFERENCE(R)
ANODE(A)
CATHODE(K)
1. REF
2. ANODE
3. CATHODE
TO-92 PKG (TOP VIEW)
3. CATHODE
2. ANODE
1. REF
1 2
SOT-89 PKG (FRONT VIEW)
1. REF
2. ANODE
3. CATHODE
2. ANODE
3. CATHODE
JBL
150P / 230V Service Manual
Page 35 of 50
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