SANYO LA4815M_10

Ordering number : ENA1373C
LA4815M
Monolithic Linear IC
Monaural Power Amplifier
Overview
The LA4815M incorporates a 1-channel power amplifier with a wide operating supply voltage range built into a
surface-mounted package. This IC also has a mute function and requires only a few external components, making it
suitable for low-cost set design. There is also a surface-mounted package type with heat sink (LA4815VH).
Applications
Intercoms, door phones, transceivers, radios, toys, home appliances with voice guidance, etc.
Features
• Built-in 1-channel power amplifier
Output power 1 = 370mW typ. (VCC = 6V, RL = 8Ω, THD = 10%)
Output power 2 = 620mW typ. (VCC = 6V, RL = 4Ω, THD = 10%)
Output power 3 = 230mW typ. (VCC = 5V, RL = 8Ω, THD = 10%)
Output power 4 = 1,000mW typ. (VCC = 12V, RL = 16Ω, THD = 10%)
• Mute function
• Selectable voltage gain : 2 types
26dB/40dB
* Gain values between 26 and 40dB can also be set by adding external components (two resistors).
• Only a few external components
4 components/total
• Wide supply voltage range
4 to 13V (When using 9V or more, another package product, LA4815VH, is recommended.)
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.
72210 SY / 090209 SY / 31109 MS 20090226-S00007 / D1008 MS PC No.A1373-1/14
LA4815M
Specifications
Maximum Ratings at Ta = 25°C
Parameter
Symbol
Maximum power supply voltage
VCC max
Allowable power dissipation
Pd max
Conditions
Ratings
* Mounted on the board
Unit
15
V
0.9
W
Maximum junction temperature
Tj max
150
°C
Operating temperature
Topr
-30 to +75
°C
Storage temperature
Tstg
-40 to +150
°C
* Mounted on SANYO evaluation board : Double-sided board with dimensions of 50mm × 50mm × 1.6mm (glass epoxy)
Operating Conditions at Ta = 25°C
Parameter
Recommended power supply
Symbol
Conditions
Ratings
Unit
VCC
6
V
voltage
Recommended load resistance
RL
4 to 32
Ω
Allowable operating supply
VCC op
4 to 13
V
voltage range
* The supply voltage level to be used must be determined with due consideration given to the allowable power dissipation of the IC.
Electrical Characteristics at Ta = 25°C, VCC = 6V, RL = 8Ω, fin = 1kHz
Parameter
Symbol
Ratings
Conditions
min
typ
Unit
max
Quiescent current drain-1
ICCOP1
No signal
4.6
Quiescent current drain-2
ICCOP2
No signal, pin 7 = LOW
1.6
8.3
mA
Maximum output power-1
POMAX1
THD = 10%
250
370
mW
Maximum output power-2
POMAX2
THD = 10%, RL = 4Ω
Voltage gain-1
VG1
VIN = -30dBV
23.9
25.9
27.9
dB
Voltage gain-2
VG2
VIN = -40dBV, pin 1/pin8 = GND
37
39.5
42
dB
Total harmonic distortion
THD
VIN = -30dBV
0.11
0.7
Mute attenuation
MT
VIN = -10dBV, pin 7 = LOW
-90
-115
Output noise voltage
VNOUT
Rg = 620Ω, 20 to 20kHz
40
Ripple rejection ratio
SVRR
Rg = 620Ω, fr = 100Hz, Vr = -20dBV
44
Mute control voltage-LOW
V7cntL
Mute mode
Mute control voltage-HIGH1
V7cntH1
Mute released, VCC = 6.5V or lower
1.8
Mute control voltage-HIGH2
V7cntH2
Mute released, VCC = 6.5V or higher
2.4
Input resistance
Ri
620
mA
mW
%
dBV
100
μVrms
dB
0.3
V
V
V
100
kΩ
No.A1373-2/14
LA4815M
Package Dimensions
unit : mm (typ)
3032D
Pd max – Ta
5.0
5
0.63
4.4
6.4
8
4
0.15
0.35
(1.5)
1.27
1.7max
1
(0.65)
Allowable power dissipation, Pd max – W
1.2
1.0
0.9
SANYO evaluation board (double-sided),
50 × 50 × 1.6mm3 (glass epoxy)
0.8
0.6
0.54
0.4
Independent IC
0.3
0.2
0
– 30 – 20
0.18
0
20
40
60
75 80
100
0.1
Ambient temperature, Ta – °C
SANYO : MFP8(225mil)
Evaluation board
1. Double-sided circuit board
Dimensions : 50mm × 50mm × 1.6mm
Top Layer(Top view)
Bottom Layer(Top view)
No.A1373-3/14
LA4815M
Block Diagram and Sample Application Circuit
VCC
from CPU
+
+
GAIN2
8
MUTE
OUT
VCC
7
6
5
MUTE
VCC
-
Vbias
+ PreAMP
Power
AMP
3
4
BIAS
1
GAIN1
2
GND1
IN
PGND
Vin
Test Circuit
+
0.35V
VCC
S3
+
S2
8
7
6
5
GAIN2
MUTE
VCC
OUT
GAIN1
1
GND1
2
IN
3
PGND
4
VOUT
S1
S11
Vin
No.A1373-4/14
LA4815M
Pin Functions
Pin No.
Pin Name
Pin Voltage
Description
Equivalent Circuit
VCC = 6V
GAIN1
0.2
Gain switching pin.
• 26dB mode when left open.
VCC
• 40dB mode when connected to ground.
(Both pins 1 and 8 must be reconfigured at
122Ω
BIAS
1
10kΩ
1
the same time.)
500Ω
GND
2
GND1
0
3
IN
1.57
Preamplifier system ground pin.
Input pin.
VCC
Pre-Amp
+
3
100kΩ
Vbias
4
PGND
0
Power amplifier ground pin.
5
OUT
2.94
Power amplifier output pin.
VCC
VCC
10kΩ
Pre-Amp
5
GND
6
VCC
6
7
MUTE
2.3
Power supply pin.
Mute control pin.
VCC
• Mute ON ⇒ Low
VCC
• Mute OFF ⇒ High
40kΩ
10kΩ
7
30kΩ
30kΩ
GND
8
GAIN2
0.2
Gain switching pin.
• 26dB mode when left open.
VCC
• 40dB mode when connected to ground.
(Both pins 1 and 8 must be reconfigured at
the same time.)
125Ω
10kΩ
OUT
8
500Ω
GND
No.A1373-5/14
LA4815M
Notes on Using the IC
1. Voltage gain settings (Pins 1 and 8)
The voltage gain of the power amplifier is fixed by the internal resistors.
• Pins 1 and 8 be left open : Approximately 26dB
• Pins 1 and 8 connected to GND : Approximately 39.5dB
Note that the voltage gain can be changed using two resistors. (See Fig. 1)
• Voltage gain setting : According to the resistor connected between Pin 8 and Pin 2 (GND1)
* Voltage gain = 20log (20 × (625 + Rvg1)/(125 + Rvg1))
• Output DC voltage setting : According to the resistor connected between Pin 1 and Pin 2 (GND1)
* Rvg1 = Rvg2 must be satisfied.
In addition, the voltage gain can also be lowered to approximately 20dB (when using 5V or 6V power supply) by an
application such as shown in Fig. 2 below.
• Voltage gain setting : According to the resistor connected between Pin 8 and Pin 5 (OUT)
* Voltage gain = 20log (20 × (125 + Rvg3)/(10,125 + Rvg3))
• Output DC voltage setting : According to the resistor connected between Pin 1 and Pin 6 (VCC)
* Set the resistor values so that the Pin 5 (OUT) DC voltage is approximately half the supply voltage.
Example : When Rvg3 = 10kΩ, Rvg4 = 22kΩ (when VCC = 6V)
However, note that using this method to greatly lower the voltage gain deteriorates the characteristics, so the voltage
gain should be lowered only to approximately 20dB. In addition, when using a high supply voltage (7V or more), the
clipped waveform may invert, so this voltage gain reduction method must not be used in these cases.
Rvg1
Rvg3
8
GAIN2
7
6
VCC
5
OUT
8
GAIN2
LA4815M
GAIN1 GND1
1
2
7
6
VCC
5
OUT
LA4815M
3
GAIN1 GND1
1
2
4
Rvg2
3
4
Rvg4
Figure 1
Figure 2
2. Signal source impedance : rg
The signal source impedance value rg affects the ripple rejection ratio together with input coupling capacitor Cin, so rg
should be as small as possible. Therefore, when attenuating the signal at the Cin front end as shown in Fig. 4, the
constants should be set in consideration of these characteristics. Using the smallest resistor Rg1 value possible is
recommended.
In addition, when setting the signal level, the voltage gain should be set on the LA4815M side and the input front-end
should be configured using only the input coupling capacitor, Cin, as shown in Fig. 5 in order to maximize the ripple
rejection ratio.
Rg2
OUT
Cin
3 IN
ro
LA4815M
Cin
Rg1
other IC
Pre-Amp
-
IN
3
+
100kΩ
rg
Vbias
Figure 4
OUT
Cin
3 IN
ro
Figure 3
LA4815M
other IC
Figure 5
No.A1373-6/14
LA4815M
3. Mute control pin (Pin 7)
The internal power amplifier circuit can be disabled and audio mute is turned on by controlling the voltage applied to
Pin 7. Control can be performed directly using the CPU output port, but digital noise from the CPU may worsen the
LA4815M noise floor. Therefore, inserting a series resistor, Rm1 (1 to 2.2kΩ) as shown in Fig. 6, is recommended.
• Mute ON : Low
• Mute OFF : High or open
In addition, the Pin 7 DC voltage is dependent on the supply voltage, so a reverse current flows to the CPU power
supply line when the Pin 7 voltage is higher than the CPU supply voltage. In these cases, connect a resistor, Rm2 (see
Fig. 7) between Pin 7 and GND to lower the Pin 7 DC voltage as shown in Fig. 6.
Note that when not using the mute function, Pin 7 must be left open.
LA4815M
VCC
VDD
10kΩ
40kΩ
7
I/O port
1kΩ
Rm1
30kΩ
Rm2
30kΩ
VSS
CPU
* For reverse
current prevention
GND
Figure 6
Reverse current prevention resistor value : Rm2 (reference value) ← When V7 is set to approximately 2.5V
Rm2 – VCC
1000
7
Impedance, Rm2 – kΩ
5
3
2
100
7
5
3
2
10
7
9
11
15
13
Supply voltage, VCC – V
Figure 7
4. Mute control timing
When performing mute control, exercise control at the timing shown in Fig. 8.
During power-on : Twu = 0 to 50ms
* Pins 6 and 7 can also rise simultaneously.
During power-off : Twd = 100 to 200ms
Pin 6
(VCC)
Pin 7
(MUTE)
Twu
Twd
Figure 8
No.A1373-7/14
LA4815M
5. Popping noise reduction during power-off
The power supply line can be directly controlled ON and OFF without using the mute function. However, when using
a high supply voltage, the shock noise and aftersound during power-off tends to worsen. One method of coping with
this is to connect a capacitor between Pin 6 (VCC) and Pin 7 (MUTE) as shown in Fig. 9 so that the auto mute function
operates during power-off.
Recommended value = 1μF
LA4815M
6 VCC
CVCC
+
Cmt +
1μF
7 MUTE
Figure 9
6. Input coupling capacitor (Cin)
Cin is an input coupling capacitor, and is used for DC cutting. However, this capacitor is also used to improve the ripple
rejection ratio, which changes according to the capacitance value (recommended value = 1μF). In addition, this
capacitor also affects the transient response characteristics during power-on and when mute is canceled, so the constant
should be set in consideration of these characteristics.
Design reference value = approximately 0.33 to 3.3μF
• Ripple rejection ratio : Increasing the capacitance value increases the rate, and reducing the value reduces the rate.
• Rise response speed : Increasing the capacitance value reduces the speed, and reducing the value increases the
speed.
• Popping noise : Increasing the capacitance value reduces the noise, and reducing the value increases the noise.
7. Output coupling capacitor (Cout)
Cout is an output coupling capacitor used for DC cutting. However, this capacitor, Cout, in combination with load
impedance RL forms a high-pass filter and attenuates the low frequency signal. Take into account the cutoff frequency
when determining the capacitance value. In addition, normally a chemical capacitor is used for this capacitor, but the
capacitance value of chemical capacitors decreases at low temperatures, so the value should be set in accordance with
this characteristic.
The cutoff frequency is expressed by the following formula.
fc = 1/(2π × RL × Cout)
8. Output phase compensation capacitor (Cosc)
The Cosc capacitor is used to prevent output oscillation. Use a ceramic capacitor (recommended value = 0.1μF) with
good high frequency characteristics, and locate this capacitor as close to the IC as possible.
9. Power supply capacitor (CVCC)
The CVCC capacitor is used to suppress the ripple component of the power supply line. Normally a chemical capacitor
(recommended value = 10μF) is used for this capacitor. However, chemical capacitors have poor high frequency
characteristics, so when using a CPU, DSP or other IC that generates digital noise in the set, it is recommended that a
power supply bypass capacitor (ceramic capacitor, recommended value = approximately 0.1μF) be added to reject
high-frequency components. Locate this bypass capacitor as close to the IC as possible.
No.A1373-8/14
LA4815M
10. Signal mixing methods
The following methods can be used to mix a beep, key tone or other signal into the audio signal. Note that when input
to Pin 8 is selected, amplification of signals input from Pin 3 changes according to impedance Z8 connected to Pin 8.
10-1. Mixing method using resistors in the Pin 3 input front end
OUT2
Signal-2
Vout2
ro
OUT1
Signal-1
ro
Rg3
Pin 3 input impedance : Zin = 100kΩ
Rg2
IN
Vin
Vout1
Rg1
Pre-Amp
+
3
Cin
100kΩ
Vbias
LA4815M
other IC
Figure 10
10-2. Method using input to Pin 8
• First signal system (Signal-1) voltage gain : Vg1
Vg1 = 20log (Vout/Vin1) = 20log (4 × (125 + Z8) (500 + (125 × Z8/(125 + Z8)))/(25 × Z8))
* Z8 = R1 + ro
• Second signal system (Signal-2) voltage gain : Vg2
Vg2 = 20log (Vout/Vin2) = 20log (10000/(125 + R1))
* fc2 = 1/(2π × Cin2 × (R1 + 125))
8
+
Cin2
OUT2
Signal-2
125Ω
R1
Vin2
10kΩ
OUT
5 Vout
GAIN2
500Ω
ro
OUT1
Signal-1
Rg2
Pre-Amp
Vin1
ro
Rg1
3
Cin
IN
+
100kΩ
+
PWR - Amp
Vbias
LA4815M
other IC
Figure 11
11. Short-circuit between pins
Turning on the power supply with some pins short-circuited may cause deterioration or breakdown. Therefore, when
mounting the IC on a board, check to make sure that no short-circuit is formed between pins by solder or other foreign
substances before turning on the power supply.
12. Load short circuit
Leaving the IC for a long time in the condition with a load short circuit may cause deterioration or breakdown.
Therefore, never short-circuit the load.
13. Maximum ratings
When used under conditions near the maximum ratings, even a slight fluctuation in the conditions may cause the
maximum ratings to be exceeded, possibly resulting in a breakdown or other accidents. Therefore, always provide
enough margin for fluctuations in the supply voltage and other conditions, and use within a range not exceeding the
maximum ratings.
No.A1373-9/14
LA4815M
General characteristics (1)
1
7
5
3
2
0.1
7
5
0.01
2
3
5
7 0.1
2
3
5
7
2
1
3
5
3
2
THD – PO
RL = 4Ω
Vg = 26dB
fin = 1kHz
10
7
5
3
2
1
7
5
3
2
0.1
7
5
0.01
2
3
5
THD – f
VCC = 6V
RL = 8Ω
PO = 100mW
3
2
B
0d
VG
1
7
5
VG
3
2
=4
B
6d
=2
0.1
7
5
3
2
0.01
100
2
3
5
7 1k
2
3
5
7 10k
2
3
10
7
5
5
PO max – VCC
3
1
=
VG
Max. output power, PO max – W
Ω
RL
8Ω
=4
2
3
5
7
5
VG
2
3
5
40d
B
6d
=2
3
2
0.1
7
5
3
2
2
3
5 7
2
1k
3
5 7 10k
PO max – RL
VCC = 6V
Vg = 26dB
THD = 10%
7
R
L=
6Ω
1.5
RL
=1
1
0.5
5
3
2
0.1
7
5
3
2
0.01
9
12
15
2
1
3
2V
C
=
(P
0.3
OP
I CC
V CC
0
0.01
= 6V
1
1
0.4
0.2
0.5
0.4
VC
0.6
1.2
0.2
(Pd)
0.1
0
2
3
5
7 0.1
2
3
5
7
Output power, PO – W
1
2
3
5
Power dissipation, Pd – W
d)
0.8
0.6
Supply current, ICCOP – A
Pd – PO
RL = 8Ω
Vg = 26dB
fin = 1kHz
5
7
2
10
3
5
7
Load impeadance, RL – Ω
Supply voltage, VCC – V
100
Pd – PO
0.6
RL = 4Ω
Vg = 26dB
fin = 1kHz
0.5
d)
0.8
C
=
9V
(P
0.4
VC
0.6
V
0.4
V CC
=6
)
(Pd
0.3
0.2
0.1
0.2
0
0.01
Supply current, ICCOP – A
6
OP
3
IC
C
Max. output power, PO max – W
7
B
2
1
1
0
Power dissipation, Pd – W
5
Frequency, f – Hz
Vg = 26dB
THD = 10%
2
1
3
THD – f
0.01
100
2.5
1.2
2
VCC = 6V
RL = 4Ω
PO = 200mW
Frequency, f – Hz
3
7 0.1
Output power, PO – W
Total harmonic distortion, THD – %
Total harmonic distortion, THD – %
Output power, PO – W
10
7
5
VCC = 9V
Total harmonic distortion, THD – %
VCC = 1
2V
3
2
VCC = 9V
10
7
5
VCC = 6
V
3
2
VCC = 5
V
Total harmonic distortion, THD – %
5
RL = 8Ω
Vg = 26dB
fin = 1kHz
VCC = 5V
VCC = 6V
THD – PO
5
0
2
3
5
7 0.1
2
3
5
7
1
2
3
5
Output power, PO – W
No.A1373-10/14
LA4815M
General characteristics (2)
20
15
10
5
0
10
2 3
5 7100
2 3
5 7 1k
2 3
5 7 10k
2 3
5 7100k
55
50
45
40
35
10
2 3
5 7100
50
VG
=2
VG = 40dB
40
35
30
25
20
0.1
2
3
5
7
2
1
3
5
7
Capacitance, Cin – μF
10
VOUT – VIN
20
Vg = 26dB
RL = 8Ω
fin = 1kHz
15
Output level, VOUT – dBV
B
6d
45
5 7 1k
2 3
5 7 10k
2 3
5 7100k
55
50
2 3
5 7 10k
10
VG = 40dB
40
35
30
25
1
– 20
VCC = 6V
5
0
–5
– 10
– 15
– 20
VG = 26dB
45
0
VCC = 12V
SVRR – Rg
VCC = 6V
RL = 8Ω
Vr = -20dBV
fr = 100Hz
Cin = 1μF
2 3
5 7 10
2 3
5 7100
2 3
5 7 1k
Impeadance, Rg – Ω
Vmute – VIN
VCC = 6V
RL = 8Ω
VG = 40dB
VG = 26dB
55
Supply voltage ripple rejection, SVRR – dB
SVRR – Cin
VCC = 6V
RL = 8Ω
Vr = -20dBV
fr = 100Hz
Rg = 620Ω
2 3
Frequency, f – Hz
Muting level, Vmute – dBV
Supply voltage ripple rejection, SVRR – dB
Frequency, f – Hz
60
=4
0d
B
VG = 26dB
25
60
B
30
65
VG
35
6d
VG = 40dB
SVRR – f
VCC = 6V
RL = 8Ω
Rg = 620Ω
Vr = -20dBV
Cin = 1μF
=2
Voltage gain, VG – dB
40
70
VG
VCC = 6V
RL = 8Ω
Supply voltage ripple rejection, SVRR – dB
VG – f
45
– 40
– 60
– 80
– 100
– 120
– 25
– 30
– 50
– 40
– 30
– 20
– 10
– 140
– 30
0
– 25
– 20
Input level, VIN – dBV
Vmute – VCC
– 110
RL = 8Ω
Vg = 26dB
VIN = -10dBV
fin = 1kHz
Muting level, Vmute – dBV
Muting level, Vmute – dBV
– 110
– 15
– 10
–5
0
Input level, VIN – dBV
– 115
– 120
– 125
Vmute – fin
VCC = 6V
RL = 8Ω
Vg = 26dB
VIN = -10dBV
– 115
– 120
– 125
– 130
– 130
4
6
8
10
12
Supply voltage, VCC – V
14
16
10
2 3
5 7 100
2 3
5 7 1k
2 3
5 7 10k
2 3
5 7100k
Input frequency, fin – Hz
No.A1373-11/14
LA4815M
General characteristics (3)
VNO – VCC
7
RL = 8Ω
Rg = 620Ω
DIN AUDIO
ICCO – VCC
RL = OPEN
Rg = 0Ω
6
Supply current, ICCO – mA
Noise voltage, VNO – μVrms
200
150
VG = 40dB
100
50
VG = 26dB
F
E-OF
MUT
5
4
3
E-ON
MUT
2
1
0
4
6
8
10
12
14
0
0
16
2
4
Supply voltage, VCC – V
Vpin – VCC
8
2
B)
6d
Pin voltage, Vpin – V
n
Pi
2
5(
n
Pi
5
B)
Control voltage, V7 cont – V
7
6
6
8
10
14
12
16
Supply voltage, VCC – V
0d
4
5(
n7
Pi
4
3
2
V7 cont – VCC
Vg = 26dB
Vin = -20dBV
RL = 8Ω
1.5
1
0.5
1
0
0
2
4
6
8
10
12
14
0
4
16
6
8
Supply voltage, VCC – V
10
12
16
14
Supply voltage, VCC – V
Temperature characteristics (1)
3
2
1
7
5
3
2
0.1
0.01
2
3
5
7
0.1
2
Output power, PO – W
3
5
7
1
2
10
7
5
°C
Ta = 25°C
°C
Ta = 25°C
Ta = 75°C
10
7
5
3
THD – PO
VCC = 6V
RL = 4Ω
VG = 26dB
fin =1kHz
3
Ta = -2
5
2
5
Total harmonic distortion, THD – %
3
THD – PO
VCC = 6V
RL = 8Ω
VG = 26dB
fin =1kHz
Ta = 25
Total harmonic distortion, THD – %
5
2
1
7
5
3
Ta = 75°C
2
0.1
0.01
2
3
5
7
0.1
2
3
5
7
1
Output power, PO – W
No.A1373-12/14
LA4815M
Temperature characteristics (2)
PO – Ta
RL = 8Ω
VG = 26dB
fin = 1kHz
THD = 10%
3
2
10
7
5
3
VCC = 12V
1
7
5
Output power, PO – W
Output power, PO – W
10
7
5
VCC = 6V
3
2
VCC = 5V
0.1
7
5
PO – Ta
RL = 4Ω
VG = 26dB
fin = 1kHz
THD = 10%
2
VCC = 9V
1
7
5
VCC = 6V
3
2
VCC = 5V
0.1
7
5
3
2
3
0.01
– 50
0.01
– 50
2
– 25
0
25
50
75
100
– 25
Ambient temperature, Ta – °C
VG – Ta
50
VG = 40dB
Noise voltage, VNO – μVrms
Voltage gain, VG – dB
60
VCC = 6V
RL = 8Ω
40
30
VG = 26dB
20
10
0
– 50
– 25
0
25
50
75
V7 – Ta
50
100
75
100
40
30
20
10
– 25
0
25
50
V7cont – VCC
2.1
Control voltage, V7cont – V
Pin 7 voltage, V7 – V
75
Ambient temperature, Ta – °C
2
1.5
1
RL = 8Ω
VG = 26dB
fin = 1kHz
VIN = -30dBV
1.8
Ta =
1.5
Ta
=
-25
°C
25°
C
Ta
=
1.2
75°
C
0.9
0.6
0.5
0
– 50
0.3
– 25
0
25
50
75
100
Ambient temperature, Ta – °C
4
6
8
10
12
14
16
Supply voltage, VCC – V
ICCO – VCC
7
RL = OPEN
Rg = 0Ω
6
Supply current, ICCO – mA
50
VNO – Ta
0
– 50
100
VCC = 6V
RL = OPEN
Rg = 0Ω
2.5
25
VCC = 6V
RL = 8Ω
Rg = 620Ω
DIN AUDIO
Ambient temperature, Ta – °C
3
0
Ambient temperature, Ta – °C
Ta = 75°C
5°C
Ta = 2 C
-25°
Ta =
5
4
3
2
1
0
0
2
4
6
8
10
12
14
16
Supply voltage, VCC – V
No.A1373-13/14
LA4815M
Muting on and off transient characteristics
VCC = 6V
RL = 8Ω
Cin = 1μF
VCC = 6V
RL = 8Ω
Cin = 2.2μF
200ms/div
VCC = 12V
RL = 8Ω
Cin = 1μF
200ms/div
OUT : 200mV/div, AC
OUT : 200mV/div, AC
Pin 7 : 2V/div, DC
Pin 7 : 2V/div, DC
200ms/div
VCC = 12V
RL = 8Ω
Cin = 2.2μF
200ms/div
OUT : 200mV/div, AC
OUT : 200mV/div, AC
Pin 7 : 2V/div, DC
Pin 7 : 2V/div, DC
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to change without notice.
PS No.A1373-14/14