Audio Output for TV Application, 5.0 W x 2-Ch Class AB Power Amplifier

Ordering number : ENA0855
Monolithic Linear IC
LA42032
Audio Output for TV application
5W × 2ch Power Amplifier
Overview
LA42032 is 5W 2-channel AF power amplifier intended for televisions.
Functions
• 3W × 2 channels (VCC = 9V, RL = 8Ω, THD = 10%).
• 5W × 2 channels (VCC = 11V, RL = 8Ω, THD = 10%).
• Standby function.
• Built-in mute function.
• Built-in various protection circuit (short to VCC/short to groumd/load shorting/overheating).
Specifications
Maximum Ratings at Ta = 25°C
Parameter
Maximum supply voltage
Symbol
Allowable power dissipation
Pd max
Maximum junction temperature
Tj max
Thermal resistance
Conditions
Ratings
VCC max
Unit
16
Infinitely large heat sink
θjc
V
15
W
150
°C
3
°C/W
Operating temperature
Topr
-25 to +75
°C
Storage temperature
Tstg
-40 to +150
°C
Operating Conditions at Ta = 25°C
Parameter
Symbol
Conditions
Ratings
Unit
Recommended supply voltage
VCC
9
V
Recommended load resistance
RL
8
Ω
5.5 to 15
V
Allowable operating supply
voltage range
VCC op
Under conditions such that
Maximum ratings are not exceeded
Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to
"standard application", intended for the use as general electronics equipment (home appliances, AV equipment,
communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be
intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace
instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety
equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case
of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee
thereof. If you should intend to use our products for applications outside the standard applications of our
customer who is considering such use and/or outside the scope of our intended standard applications, please
consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our
customer shall be solely responsible for the use.
Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate
the performance, characteristics, and functions of the described products in the independent state, and are not
guarantees of the performance, characteristics, and functions of the described products as mounted in the
customer' s products or equipment. To verify symptoms and states that cannot be evaluated in an independent
device, the customer should always evaluate and test devices mounted in the customer' s products or
equipment.
62007 MS PC 20060203-S00001 No.A0855-1/7
LA42032
Electrical Characteristics at Ta = 25°C, VCC = 9V, RL = 8Ω, f = 1kHz, Rg = 600Ω
Parameter
Symbol
Ratings
Conditions
min
Standby current
Ist
ICCO
Rg = 0, RL = OPEN
Output power
PO1
THD = 10%
PO2
VCC = 11V, THD = 10%
THD
PO = 1W
Total harmonic distortion
Voltage gain
VG
Output noise voltage
VNO
Ripple rejection ratio
SVRR
Channel separation
CH.Sep
Mute attenuation value
μA
mA
2
3
33
Vst
W
W
0.06
0.2
%
35
37
dB
0.2
0.4
mVrms
Rg = 0, fR = 100Hz, VCCR = 0dBm
40
50
dB
Rg = 10kΩ, VO = 0dBm
50
60
dB
VO = 1Vrms, BPF = 20Hz to 20kHz
80
90
Mute ON *1
1.7
3.0
V
0
0.5
V
2.5
15
V
0
0.5
V
39
kΩ
Mute OFF
Amplifier ON *1
Amplifier OFF
Input resistance
10
140
Rg = 0, BPF = 20Hz to 20kHz
Vmute
Standby control voltage (pin 5)
0
70
5
VO = 0dBm
ATT
Mute control voltage (pin 6)
max
40
Amplifier OFF
Quiescent current
Unit
typ
Ri
21
dB
30
*1 : Note that the standby pin (pin 5) and MUTE pin (pin 6) incorporate the anti-electrostatic diode allowing the current to flow through the diode when the
potential of VCC 7 pin decreases below that of pin 5/6.
Package Dimensions
unit : mm (typ)
3107B
Pd max -- Ta
2.4
1
13
0.5
2.0
1.15
1.0 min
15.4max
4.5
(13.9)
3.4
2.0)
11.2
(11.8)
C0.7
(
(10.0)
3.0 min
25.6
0.4
1.2
Allowable power dissipation, Pd max – W
18
16
14
Infinitely large heat sink
15
100×100×1.5mm3
12
θjc=3ºC/W
11.7
10
8
50×50×1.5mm3
6
5.8
4
2
0
--20
No heat sink
0
20
40
60
80
100
120
140
160
Ambient temperature, Ta – ˚C
(0.8)
SANYO : SIP13H
No.A0855-2/7
LA42032
Block Diagram
Standby
VCC
5
7
Input amplifier
12 +OUT1
IN1 2
Output amplifier
Ri=
30kΩ
11 -OUT1
MUTE 6
VCC/ground shorting protection circuit
Load shorting protection circuit
Thermal protection circuit
PRE
GND 3
IN2 4
PWR
10 GND
8
+OUT2
9
-OUT2
Output amplifier
Ri=
30kΩ
Input amplifier
1
Ripple
Filter
Test Circuit
LA42032
Ripple
Filter
1
C3 +
47μF
/16V
*
IN1
PRE
GND
IN2
2
3
4
C1
4.7μF
/10V
*
STBY MUTE
5
C2
4.7μF
/10V
VCC
+OUT2 -OUT2
6
7
8
C4
C5
10μF
1000μF
/10V
/16V
R1
15kΩ
+
+
PWR
GND
9
RL
C8
0.1μF
R4
2.2Ω
10
C9
0.1μF
R5
2.2Ω
-OUT1 +OUT1
11
RL
C7
0.1μF
R3
2.2Ω
N.C.
12
13
C6
0.1μF
R2
2.2Ω
+5V
* LA42032 employs the zero-bias type input circuit, with the input pin potential being nearly zero (about 0.01V).
Accordingly, the polarity must be determined according to the DC potential of a circuit connected to the previous stage
of LA42032.
No.A0855-3/7
LA42032
External Components
C1, C2
: Input coupling capacitors, for which 4.7μF or less is recommended. LA42032 employs the zero-bias type
input circuit, with the input pin potential being nearly zero. Accordingly, the polarity must be determined
according to the DC potential of a circuit connected to the previous stage of LA42032.
C3
: Capacitor for starting time of the ripple filter and amplifier, for which 47μF is recommended.
C4, R1 : Capacitor and resistor for mute. C4 is necessary even when the mute function is not used.
C5
: Power capacitor.
C6 to C9 : Capacitor and resistor for oscillation prevention. For C6 to C9, the polyester film capacitor with superior
R2 to R5 temperature characteristics (Mylar capacitor) is recommended. Use R2 to R5 of 2.2Ω along with the
capacitor.
1. Mute function (pin 6)
With the pin 6 voltage of 1.7V (minimum) or more, the mute function is turned ON.
Set the VM application voltage so that the pin 6 voltage becomes. 1.7V or more.
The mute time constant is determined by R1 and C4. Determine the constant after careful review because it is related
to the pop sound at mute ON/OFF.
C4 is necessary even when the mute function is not used because it is related to the pop sound when the amplifier is
turned ON.
Note that the MUTE pin (pin 6) incorporates the
anti-electrostatic diode, allowing the current to flow through the
diode when the potential of VCC 7 pin decreases below that of
pin 6.
Mute
VCC
R1
VM
2kΩ
6
C4 +
10μF
20kΩ
2kΩ
2. Standby function (pin 5)
The amplifier is turned ON when the voltage of 2.5V (minimum) or more is applied to pin 5.
Pin 5 control voltage
Standby
Pin 5 voltage
Amplifier
Standby
0 to 0.5
OFF
ON
2.5 to VCC
ON
OFF
To suppress the inrush current to pin 5 when the VSTB
application voltage is high, insert the control resistor (RSTB).
VCC
2VBE
VS
RSTB
15kΩ
5
30kΩ
1.5kΩ
Example : Tosuppress the pin 5 inrush current to 500μA or less
RSTB =
Applied voltage (VSTB) -2VBE (About 1.4V)
-15kΩ
500μA
Note that the standby pin (pin 5) incorporates the anti-electrostatic diode, allowing the cu orrent to flow through the
diode when the potential of VCC pin 7 decreases below that of pin 5.
No.A0855-4/7
LA42032
Cautions for us
1. Short-circuit (power-output short-circuit), ground fault (GND-output short-circuit), and load short-circuit protective
circuits are incorporated. They are activated in case of abnormal connection.
These circuits remain active while such abnormal connection continues and is reset automatically when the
abnormality is removed.
In certain conditions, the protective circuits may be locked and continue to be active even when the abnormality is
removed. In this case, either enter the standby mode or turn OFF the power supply.
2. The thermal protection circuit is incorporated and is activated when the junction temperature (Tj) rises to about 160°C
or more. The output is controlled to return gradually to the attenuated state.
3.
When the product is used near the maximum rating, even the slightest change in the condition may cause
exceeding of the maximum rating, resulting possibly in breakdown. Take the sufficient margin for the supply voltage, etc.
and always use the product within a range never exceeding the maximum rating.
No.A0855-5/7
LA42032
ICCO – VCC
12
RL = open
Rg = 0
120
10
Output power, PO – W
Quiescent current, ICCO – mA
140
100
80
60
40
PO – VCC
Rg = 600Ω
f = 1kHz
THD = 10%
8
6
4
2
20
0
0
2
4
6
8
10
12
14
0
4
16
6
8
10
7
5
3
2
THD – PO
7
1
7
5
10kHz
0.1
7
5
1kHz
100Hz
3
2
0.01
0.1
3
5
7
2
1
3
5
7
5
3
2
0.1
7
5
3
2
10
10
2 3
5 7 100
Channel separation, CHSep. – dB
0
Response – dB
0
–2
–4
–6
VCC = 9V
RL = 8Ω
Rg = 600Ω
VO = 0dBm
2 3
5 7 100
2 3
5 7 1k
2 3
5 7 10k
2 3
5 7100k
5 7100k
– 10
2 3
5 7100k
CHSep. – f
– 20
– 30
– 40
– 50
CH1→2
– 60
10
2 3
5 7 100
0.2
0.1
5 7 1k
2
3
5 7 10k
2 3
5 7 1k
2 3
5 7 10k
MUTE ATT – Mute Pin
0
Mute attenuation value, Mute ATT – dB
Output noise voltage, VNO – mVrms
2 3
Frequency, f – Hz
0.3
3
5 7 10k
CH2→1
VNO – Rg
2
2 3
– 70
VCC = 9V
RL = 8Ω
DIN AUDIO
0
100
5 7 1k
VCC = 9V
RL = 8Ω
VO = 0dBm
Rg = 10kΩ
Frequency, f – Hz
0.4
2 3
Frequency, f – Hz
Response – f
10
16
0.01
2
2
– 10
14
VCC = 9V
RL = 8Ω
Rg = 600Ω
PO = 1W
Output power, PO – W
–8
12
THD – f
1
VCC = 9V
RL = 8Ω
Rg = 600Ω
3
2
10
Supply voltage, VCC – V
Total harmonic distortion, THD – %
Total harmonic distortion, THD – %
Supply voltage, VCC – V
2
3
Resistance for signal generation, Rg – Ω
5 7 100k
VCC = 9V
RL = 8Ω
DIN AUDIO
– 20
– 40
– 60
– 80
– 100
0.5
0.7
0.9
1.1
1.3
1.5
1.7
Mute contorol pin voltage – Ω
No.A0855-6/7
LA42032
SVRR – VCC
0
RL = 8Ω
Rg = 0
fr = 100Hz
νr = 0dBm
CVCC = 0.1μF
– 10
– 20
Ripple rejection ratio, SVRR – dB
Ripple rejection ratio, SVRR – dB
0
– 30
ch2
– 40
ch1
– 50
– 60
– 70
– 10
– 20
SVRR – fr
VCC = 9V
RL = 8Ω
Rg = 0
νr = 0dBm
CVCC = 0.1μF
– 30
– 40
ch2
– 50
ch1
– 60
– 70
4
6
8
10
12
14
16
10
2 3
5 7 100
Supply voltage, VCC – V
SVRR – VCCR
8
VCC = 9V
SVRR = 20log (νo/VCCR)
RL = 8Ω
Rg = 0
fr = 100Hz
CVCC = 0.1μF
– 10
– 20
Allowable power dissipation, Pd – W
Ripple rejection ratio, SVRR – dB
0
– 30
– 40
– 50
– 60
– 70
0
0.2
0.4
0.6
0.8
1
1.2
1.4
VCCR– Vrms
1.6
2 3
5 7 1k
2 3
5 7 10k
2 3
5 7100k
Ripple frequency, fr – Hz
1.8
2
2.2
7
Pd – PO
VCC = 9V
Rg = 600Ω
f = 1kHz
6
5
4
3
2
1
0
0.1
2
3
5
7
1
2
3
5
7
10
Output power, PO – W
SANYO Semiconductor Co.,Ltd. assumes no responsibility for equipment failures that result from using
products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition
ranges, or other parameters) listed in products specifications of any and all SANYO Semiconductor Co.,Ltd.
products described or contained herein.
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semiconductor products fail or malfunction with some probability. It is possible that these probabilistic failures or
malfunction could give rise to accidents or events that could endanger human lives, trouble that could give rise
to smoke or fire, or accidents that could cause damage to other property. When designing equipment, adopt
safety measures so that these kinds of accidents or events cannot occur. Such measures include but are not
limited to protective circuits and error prevention circuits for safe design, redundant design, and structural
design.
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without the prior written consent of SANYO Semiconductor Co.,Ltd.
Any and all information described or contained herein are subject to change without notice due to
product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification" for the
SANYO Semiconductor Co.,Ltd. product that you intend to use.
Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed
for volume production.
Upon using the technical information or products described herein, neither warranty nor license shall be granted
with regard to intellectual property rights or any other rights of SANYO Semiconductor Co.,Ltd. or any third
party. SANYO Semiconductor Co.,Ltd. shall not be liable for any claim or suits with regard to a third party's
intellctual property rights which has resulted from the use of the technical information and products mentioned
above.
This catalog provides information as of June, 2007. Specifications and information herein are subject
to change without notice.
PS No.A0855-7/7
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