60911 SY/81810 SY / 60110 SY 20100528-S00002/41610 SY / 52009 MS No.A1468-1/15
http://onsemi.com
Semiconductor Components Industries, LLC, 2013
May , 2013
LV49821VH
Overview
The LV49821VH incorporates a 2-channel power circuit amplifier capable of low-voltage operation (2.7V and up). It
has a function for switching the headphone driver and also has a standby function to reduce the current drain. It is a
power amplifier IC optimal for driving the speakers used in portable equipment and low power output equipment.
Use
• Portable DVD-player, Note PC, Portable TV, LCD monitor, Active speaker, and more.
Features
• 2-cannels BTL power amplifier built-in: Standard output power = 1.4W (VCC = 5V, RL = 8Ω, THD = 10%)
Output coupling capacitor is unnecessary because of differential output
type.
• Standby function built-in: Standard standby current = 0.01μA (VCC = 5V)
• Second amplifier stop control function built-in: Headphone driver switch (for BTL/SE switch)
Audio mute (Only BTL power amplifier path)
• Supports beep signal input
• Thermal protection circuit built-in
• Operation at low voltage possible: VCC = 2.7V to 5.5V
• Gain setting possible: BTL voltage gain = 0 to 26dB
Specifications
Maximum Ratings at Ta = 25°C
Parameter Symbol Conditions Ratings Unit
Maximum supply voltage VCC max 6V
Allowable power dissipation Pd max Mounted on a specified board.* 1.5 W
Maximum junction temperature Tj max 150 °C
Operating temperature Topr -30 to +75 °C
Strage temperature Tstg -40 to +150
°
C
* Specified board (Our company Evaluation board): 70mm × 70mm × 1.6mm, glass epoxy both side.
Orderin
g
numbe
r
: ENA1468D
Bi-CMOS IC
For Portable Electronic Device Use
1.4W × 2ch BTL Power Amplifier
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating
Cond itions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability.
LV49821VH
No.A1468-2/15
Operating Conditions at Ta = 25°C
Parameter Symbol Conditions Ratings Unit
Recommended supply voltage VCC 5V
Recommended load resistance RL 4 to 32 Ω
Operation supply voltage range VCC op1 RL = 8Ω or more 2.7 to 5.5 V
VCC op2 RL = 4Ω or 6Ω 2.7 to 3.7 V
Note : Please determine supply voltage used with due consideration of allowable power dissipation.
Electrical Characteristics at Ta = 25°C, VCC = 5V, fin = 1kHz, RL = 8Ω, V2 = high, V6 = Low
Parameter Symbol Conditions Ratings Unit
min typ max
Quiescent current ICCOP1 No signal, RL = ∞ 7.1 13 mA
ICCOP2 No signal, RL = ∞,V6 = High (2 nd am plifier stop) 4.0 mA
Standby current ISTBY No signal, RL = ∞,V2 = Low (Standby mode) 0.01 10 μA
Maximum output power PO max THD = 10% 0.91 1.4 W
Voltage gain VG Vin = -25dBV 17.6 19.1 20.6 dB
Voltage gain difference VGR 0 26 dB
Channel balance CHB Vin = -25dBV -1.5 0 +1.5 dB
Total harmonic distortion THD Vin = -25dBV 0.3 1 %
Output noise voltage VNO Rg = 620Ω, 20 to 20kHz 35 100 μVrms
Channel separation CHsep Vout = -25dBv, 20 to 20kHz 50 60 dB
Output offset voltage VDCOS Rg = 620Ω -30 +30 mV
Muting attenuation level MUTE1 Vin = 0dBV, V2 = Low (Standby mode) -110 dBV
MUTE2 Vin = -10dBV,V6 = High (2nd amplifier stop) -85 dBV
Ripple rejection ratio SVRR Rg = 620Ω, fr = 100Hz, Vr = -20dBV 35 dB
Reference Voltage (pin 4) Vref 2.5 V
High level control voltage (pin 2) VSTBH Power amplifier operation mode 1.6 VCC V
Low level control voltage (pin 2) VSTBL Power amplifier standby mode 0 0.3 V
High level control voltage (pin 6) V2CNTH 2nd amplifier standby mode (SE mode) 4VCC/5 VCC V
Low level control voltage (pin 6) V2CNTH 2nd amplifier operation mode (BTL mode) 0 VCC/2 V
Package Dimensions
unit : mm (typ)
3377
SANYO : HSSOP13(225mil)
5.2
1.5
1.3
4.4
0.1 6.4
0.5
1
13
20.22
0.65 0.15
(0.33)
1.5 MAX
(1.3)
-30 0 20 40 60 80 100
0
1.6
1.2
0.8
0.4
Pd max -- Ta
-20
0.3
1.5
Ambient temperature, Ta -- C
Allowable power dissipation, Pd max -- W
Independent IC
With specified board Specified board: 70×70×1.6mm
3
glass epoxy both side
0.9
0.18
LV49821VH
No.A1468-3/15
Block Diagram
1 2 3 4 5 67 8
13 12 11 10 9
Rariator Fin
OUT1-1 OUT1-2 PWR-GND VCC OUT2-2 OUT2-1
TSD
1st-amp
2st-amp
2st-amp
1st-amp
BIAS
control
IN1 STBY BEEP VREF PRE-GND A2CNT NC IN2
2nd-amp
control
VCC
Test Circuit
1 2 3 4 5 6 7 8
13 12 11 10 9Rariator Fin
8Ω
100kΩ
0.1μF22kΩ
620ΩVin1
1.55V
0.35V
620ΩVin3
47nF 1μF
100kΩ
8Ω
22kΩ
620ΩVin2
0.1μF
2.2μF
0.1μF
VCC
GND
PWR-GND
PRE-GND
VCC
+
120kΩ330kΩ
100kΩ100kΩ
STBY PWR SEBTL
LV49821VH
No.A1468-4/15
Evaluation Board Circuit
1 2 3 4 5 6 7 8
13 12 11 10 9Rariator Fin
22nF
PWR
STBY
VCC
GND
PWR-GND
PRE-GND
VCC
+
OUT1-1 OUT1-2 OUT2-2 OUT2-1
SE1 SE2
+ +
SE BTL
from VCC
A2CNT IN2
use no use
IN1 STBY IN3
from VCC
(beep in)
Evaluation Board Layout (70mm × 70mm × 1.6mm)
Top layer Bottom Layer
LV49821VH
No.A1468-5/15
Application Circuit Example 1
(BTL/SE switching function use)
1 2 3 4 5 6 7 8
13 12 11 10 9Rariator Fin
VCC
PWR-GND
PRE-GND
VCC
+
Vin2Vin1
from CPU
C4
10nF
from CPU
+
Speaker
+
Speaker
Application Circuit Example 2
(Only BTL function use)
1 2 3 4 5 6 7 8
13 12 11 10 9Rariator Fin
R4
100kΩ
R3
22kΩ
C2
0.1μF
C7
2.2μF
C8
0.1μF
VCC
PWR-GND
PRE-GND
VCC
+
Vin2Vin1
from CPU
R2
100kΩR1
22kΩ
C1
0.1μF
R5
10kΩC3
1μF
SpeakerSpeaker
LV49821VH
No.A1468-6/15
Pin Function
Pin No. Pin name Pin voltage
VCC =5V Function Equivalent circuit
1
8 IN1
IN2 2.5V
2.5V Power amplifier input pin (1ch).
Power amplifier input pin (2ch).
18 VREF2
VCC
GND
VCC
2 STBY External apply Standby control pin.
• Standby mode (0 to 0. 3V)
• Operation mode (1.6V to VCC)
2BIAS
VCC
GND
VCC
30kΩ
100kΩ
3
4 BEEP
VREF 2.5V
2.5V Beep signal input pin.
Reference voltage pin.
VCC
GND
VCC
50kΩ
100kΩ
3
4
VREF2 VREF
450kΩ
100kΩ
5 PRE-GND 0V Pre-stage block ground pin
6 A2CNT External apply 2nd amplifier stop control pin.
6
VCC
GND
VCC
100kΩ50kΩ
7 NC − Unused pin.
9
13 OUT2-1
OUT1-1 2.5V
2.5V BTL 1st output pin (2ch).
BTL 1st output pin (1ch).
9
VCC
13
30kΩ
15kΩ
VCC
GND
VREF2
10
12 OUT2-2
OUT1-2 2.5V
2.5V BTL 2nd output pin (2ch).
BTL 2nd output pin (1ch).
10
VCC
12
VCC
GND
VREF
11 VCC External apply Power supply pin.
FIN PW R-GND 0V Power system ground pin, Radiation fin.
LV49821VH
No.A1468-7/15
Usage Note
1. Input coupling capacitor (C1 and C2)
C1 and C2 are input coupling capacitors that are used to cut the DC component. The input coupling capacitors C1, C2
and the input resistors R1 and R3 make up the high-pass filter, attenuating the bass frequency. Therefore, the
capacitance value must be selected with due consideration of the cut-off frequency.
The cut-off frequencies are expressed by the following formulas.
1ch = 1/(2π × C1 × R1)
2ch = 1/(2π × C2 × R3)
This capacitor affects the pop sound at startup. Note with care that increasing the capacitance value lengthens the
charging time of the capacitor, which will make the pop sound louder.
2. BTL voltage gain
The voltage gain of the first amplifier is determined by the ratio between the resistors R1 and R2 (R3 and R4).
1ch Vg1 = 20 × log(R2/R1) …unit: dB
2ch Vg2 = 20 × log(R4/R3) … unit: dB
Therefore, the BTL voltage gain is expressed by the following formulas.
1ch VgBTL1 = 6 + 20 × log(R2/R1) … unit: dB
2ch VgBTL2 = 6 + 20 × log(R4/R3) … unit: dB
The BTL voltage gain must be set in the range of 0 to 26 dB.
3. Beep signal input pin (pin 3)
This pin is connected to the non-inverting input block of the first amplifier of the BTL amplifier, and is biased
internally by a 50kΩ resistor. The input coupling capacitor C4 and the bias resistor make up a high-pass filter that
attenuates bass band signals, so when determining the C4 capacitance value, the value must be set with due
consideration of the cut-off frequency. The cut-off frequency is expressed by the following formula.
fc3 = 1/(2π× C4 × 50000)
In addition, when input from Pin 3, the BTL voltage gain is expressed by the following formulas.
1ch VgBTL1 = 6 + 20 × log(1+R2/(R1 + ro)) … unit: dB
2ch VgBTL2 = 6 + 20 × log(1+R4/(R3 + ro)) … unit: dB
When setting the signal level, the signal should be attenuated and input as shown in Fig.1.
When not using this input pin, connect it to pin 4 as shown in Application Circuit Example-2.
1
OUT
other IC
C1
ro R1
13
R2
3
4
C4
C3
LV49821VH
VREF
Beep signal in
Fig.1
4. pin 4 capacitor (C3)
This capacitor is a ripple filter capacitor. The internal resistors (100kΩ + 450kΩ) and C3 make up a low-pass filter that
is used to reduce the power supply ripple component and increase the ripple rejection ratio.
Note that inside the IC, the rising-transient-response-characteristic of the pin 4 voltage (reference voltage) is used to
activate the automatic pop sound reduction circuit. Therefore, when reducing the C3 capacitance value to increase the
voltage rise speed, the design should take into account that the pop sound increases during voltage rise.
5. Power supply line capacitor (C7and C8)
The bypass capacitor C8 is used to remove the high frequency component that cannot be eliminated by the power
supply capacitor C7 (chemical capacitor). Place the bypass capacitor C8 as near to the IC as possible, and use a
ceramic capacitor with good high frequency characteristics.
When using a stabilized power supply, these capacitors can also be combined into a single 2.2μF ceramic capacitor.
Note that when the power supply line is relatively unstable, the power supply capacitor C7 capacitance value must be
increased.
LV49821VH
No.A1468-8/15
6. Standby pin (pin 2)
By controlling the standby pin, the mode changeover can be made between standby and operation modes. Direct
control is possible using the CPU output port, but inserting a series resistor R5 (1 kΩ or more) is recommended in case
the pin is affected by digital noise from the CPU.
Standby mode … V2 = 0V to 0.3V
Operating mode…V2 = 1.6V to VCC
In addition, when not using standby mode, this pin can also be used interlocked
with the power supply as shown in Fig. 2. The series resistor R5 can be
eliminated, but the current I2 expressed by the following formula flows through
the standby pin, so this should be taken into account in the design.
Pin 2 inflow current (unit: A): I2 = 7 × 10-6 + (VCC − 0.7) / (R5 + 30000)
2
R5
11
VCC
STBY
VCC
Fig.2
7. Pin 6 control (2nd amplifier stop control function)
Pin 6 performs on/off control for the BTL amplifier’s second amplifier operation. This function enables switching
between speaker drive (BTL output system) and headphone drive (single end output system). The control comparator
is connected to this pin, and this threshold voltage is generated by resistance division from the supply voltage. For this
reason, care should be taken, as the threshold value varies according to the supply voltage. When switching using a
headphone jack switch, the connection method shown in Application Circuit Example-1 is recommended.
Comparator threshold value: Vth = VCC × 2/3
In addition, when controlling this pin with the CPU (BTL amplifier mute function), care should be taken for the
relationship between the supply voltage used by the CPU and the supply voltage used by the power amplifier IC. When
the supply voltage used by the power amplifier IC is higher, open/low format control as shown in Fig.3 and Fig.4 is
recommended. In addition, there is also a control method that uses three resistors as shown in Fig.5. The recommended
ratio between the resistance values of these three resistors is as follows.
RC1, RC2, RC3 resistance ratio … RC1 : RC2 : RC3 = 1 : 1 : 3
CPU
LV49821VH
VSS
I/O port
6
11
VCC
A2CNT
VCC
CPU
LV49821VH
VSS
I/O port
VDD
6
11
VCC
A2CNT
VCC
RC2
RC3
CPU
LV49821VH
VSS
I/O port
VDD
6
11
VCC
A2CNT
VCC RC1
Figure 3 Figure 4 Figure 5
8. Headphone drive
When also using the BTL amplifier’s first amplifier as the headphone amplifier, it is recommended to adjust the level
by inserting series resistors R6 and R8 to the signal line as shown in Application Circuit Example-1.
Note that this series resistor, the headphone load resistance and the output coupling capacitors C5 and C6 make up a
high-pass filter, so this should be taken into account in the design. The cut-off frequencies are expressed by the
following formulas.
1ch = 1 / (2π × C5 × (R6 + RL))
2ch = 1 / (2π × C6 × (R8 + RL))
9. Load capacitance
When connecting a capacitor between the output pin and ground to suppress electromagnetic radiation or other
purposes, the effects of this capacitor may cause the power amplifier phase margin to be reduced, resulting in
oscillation. When adding this capacitor, care should be taken for the capacitance value.
Recommended capacitance value: 0.033μF to 0.33μF
10. Thermal protection circuit
The IC has a built-in thermal protection circuit that can reduce the risk of breakdown or degradation when the IC
becomes abnormally hot for some reason. When the internal chip junction temperature Tj rises to approximately 170°
C, this protective circuit operates to cut off the power supply to the power amplifier block and stop signal output.
Operation recovers automatically when the chip temperature drops to approximately 130°C.
Note that this circuit cannot always prevent breakdown or degradation, so sufficient care should be taken for using the
IC. When the chip becomes abnormally hot, immediately turn off the power and determine the cause.
LV49821VH
No.A1468-9/15
11. Short-circuit between pins
Turning on the power supply with the short-circuit between terminals leads to the deterioration and destruction of IC.
When fixing the IC to the substrate, please check that the solder is not short-circuited between the terminals before
turning on the power.
12. Load Short-circuit
Leaving the IC in the load short-circuit for many hours leads to the deterioration and destruction of the IC.
The load must not be short-circuited absolutely.
13. Maximum rating
When the rated value used is just below to the absolute maximum ratings value, there is a possibility to exceed the
maximum rating value with slight extrusion variable. Also, it can be a destructive accident.
Please use within the absolute maximum ratings with sufficient variation margin of supply voltage.
In addition, the package of this IC has low thermal radiation characteristics, so secure sufficient thermal radiation by
providing a copper foil land on the printed circuit board near the heat sink.
When VCC = 5V and load = 8Ω, a ground line copper foil area of approximately 50mm × 50mm is recommended.
LV49821VH
No.A1468-10/15
THD -- POTHD -- PO
VCC
=
5V
VG
=
19.1dB
fin
=
1kHz
VCC
=
3.3V
VG
=
19.1dB
fin
=
1kHz
8Ω
RL
=
16Ω
RL
=
16Ω
8Ω
4Ω
VCC
=
5V
PO
=
200mW
RL
=
8Ω
VG
=
26dB
12.5dB
19.1dB
VCC
=
5V
PO
=
200mW
RL
=
16Ω
8Ω
THD -- f THD -- f
PO -- VCC PO -- VCC
THD
=
10%
VG
=
19.1dB
f
=
1kHz
THD
=
1%
VG
=
19.1dB
f
=
1kHz
RL
=
4Ω
8Ω
16Ω
RL
=
4Ω
8Ω
16Ω
VCC
=
5V
PG
=
19.1dB
fin
=
1kHz
VCC
=
5V
RL
=
8Ω
Cin
=
0.1μF
THD
=
10%
1%
0.01 0.1 1 10
23 57 23 57 23 57 0.01 0.1 1 10
23 57 23 57 23 57
0.1
1
10
100
2
3
5
7
2
3
5
7
2
3
5
7
0.1
1
10
100
2
3
5
7
2
3
5
7
2
3
5
7
0.1
1
10
2
3
5
7
2
3
5
7
10 100 1k 10k 10k
23 57 23 57 23 57 23 57 0.1
1
10
2
3
5
7
2
3
5
7
10 100 1k 10k 10k
23 57 23 57 23 57 23 57
10 100 1k 10k 100k
2 3 57 2 3 57 2 3 57 2 3 57
0.1
1
10
2
3
5
7
2
3
5
7
1 10 100
23 57 23 57
0
2.0
1.0
1.5
0.5
0
2.0
1.0
1.5
0.5
2.5 3.0 3.5 4.0 4.5 5.0 5.5 2.5 3.0 3.5 4.0 4.5 5.0 5.5
4
24
20
16
12
8
PO -- RLVG -- f
Total harmonic distortion, THD -- %
Output power, PO --W
Total harmonic distortion, THD -- %
Output power, PO --W
Total harmonic distortion, THD -- %
Total harmonic distortion, THD -- %
Frequency, f -- Hz Frequency, f -- Hz
Output power, PO --W
Output power, PO --W
Supply voltage, VCC -- V Supply voltage, VCC -- V
Output power, PO --W
Load resistance, RL -- ΩFrequency, f -- Hz
Voltage gain, VG -- dB
LV49821VH
No.A1468-11/15
0
1.0
0.8
0.6
0.4
0.2
ICC -- POPd -- PO
Pd -- POPd -- PO
0
2.0
1.5
1.0
0.5
0.01 0.1 1 10
23 57 23 57 23 57 0.01 0.1 1 10
23 57 23 57 23 57
0.01 0.1 1 10
23 57 23 57 23 57 0.01 0.1 1 10
23 57 23 57 23 57
0
2.0
1.5
1.0
0.5
0
2.0
1.5
1.0
0.5
10 100 1k 10k 100k
23 57 23 57 23 57 23 57
4
10 100 1k 10k 100k
23 57 23 57 23 57 23 57
20
60
50
40
30
VNO -- VCC CHsep -- f
MUTE -- Vin MUTE -- f
3.02.5 3.5 4.0 4.5 5.0 5.5 6.0
-130
-80
-90
-110
-120
-100
-130
-80
-90
-110
-120
-100
-30-40 -20 -10 0
VCC
=
5V
VG
=
19.1dB
fin
=
1kHz
RL
=
8Ω
VG
=
19.1dB
fin
=
1kHz
RL
=
4Ω
VG
=
19.1dB
fin
=
1kHz
RL
=
8Ω
16Ω
VCC
=
5V
VG
=
19.1dB
fin
=
1kHz
RL
=
8Ω
16Ω
VCC
=
5V
4.2V
3.6V
VCC
=
3.6V
3V
VCC
=
5V
RL
=
8Ω
Rg
=
620Ω
VG
=
19.1dB
VO
=
1Vrms
RL
=
8Ω
Rg
=
6208Ω
Din Audio Filter
VCC
=
5V
RL
=
8Ω
Vin
=
-10dBV
VG
=
19.1dB
VCC
=
5V
RL
=
8Ω
fin
=
1kHz
VG
=
19.1dB
A2CNT (V6
=
4V)
STBY (V2
=
0.3V)
A2CNT (V6
=
4V)
STBY (V2
=
0.3V)
ch2
→
ch1
ch1
→
ch2
Output power, PO -- W/ch
Current drain, ICC -- A
Output power, PO -- W/ch
Power dissipation, Pd -- W
Output power, PO -- W/ch
Power dissipation, Pd -- W
Output power, PO -- W/ch
Power dissipation, Pd -- W
Supply voltage, VCC -- V
Noise voltage, VNO -- μVrms
Channel separation, CHsep -- dB
Frequency, f -- Hz
Frequency, f -- Hz
MUTE attenuation level, MUTE -- dBV
MUTE attenuation level, MUTE -- dBV
Input voltage, Vin -- dBV
LV49821VH
No.A1468-12/15
10 100 1k 10k 100k
23 57 23 57 23 57 23 57
10 0.1 1 10
23 57 23 57
SVRR -- f SVRR -- Cref
tr -- Cref
ICCO -- VCC ISTBY -- VCC
ICCO -- V2 ICCO -- V6
VCC
=
5V
RL
=
8Ω
Rg
=
620Ω
VG
=
19.1dB
Vr
=
-20dBV
Cref
=
1μF
VCC
=
5V
RL
=
8Ω
Rg
=
620Ω
VG
=
19.1dB
Vr
=
−20dBV
VCC
=
5V
RL
=
8Ω
70
20
30
40
50
60
10
70
20
30
40
50
60
0.1 1
23 57
0.01 10
23 57
0.1
1
10
2
3
5
7
2
3
5
7
2
3
5
7
0123456
0
10
2
4
6
8
0
0.05
0.01
0.02
0.03
0.04
0123456
0 0.5 1.0 1.5 2.0 2.5 3.0
0
10
2
4
6
8
0
10
2
4
6
8
0123456
Ripple rejection ratio, SVRR -- dB
Ripple rejection ratio, SVRR -- dB
Frequency, f -- Hz Capacitance, Cref -- μF
Capacitance, Cref -- μF
Rise time, tr -- secQuiescent current, ICCO -- mA
No load No load
V2
= 0.3V
BTL mode
SE mode
Supply voltage, VCC -- V
Quiescent current, ICCO -- mA
Quiescent current, ICCO -- mA
No load No load
Stnadby current, ISTBY -- μA
2pin voltage, V2 -- V 6pin voltage, V6 -- V
Supply voltage, VCC -- V
LV49821VH
No.A1468-13/15
THD -- POICCO -- VCC
PO -- Ta VG -- Ta
VNO -- Ta CHsep -- Ta
MUTE -- Ta MUTE -- Ta
Ta
=
-40°C
85°C
25°C
Ta
=
85°C
-40°C
25°C
VCC
=
5V
RL
=
8Ω
VG
=
19.1dB
fin
=
1kHz
VCC
=
5V
RL
=
8Ω
VG
=
19.1dB
fin
=
1kHz
VCC
=
5V
RL
=
8Ω
VG
=
19.1dB
fin
=
1kHz
Vin
=
-25dB
BTL mode
THD
=
10%
1%
VCC
=
5V
RL
=
8Ω
Rg
=
620Ω
VG
=
19.1dB
VCC
=
5V
RL
=
8Ω
VG
=
19.1dB
fin
=
1kHz
VO
=
-25dB
0.1 1 10
23 57 23 57 23 57
0.1
1
10
100
2
3
5
7
2
3
5
7
2
3
5
7
0.01 0123456
0
10
2
4
6
8
2.0
1.0
1.2
1.4
1.6
1.8
-40 -20 0 20 40 60 80 100 -40 -20 0 20 40 60 80 100
21
18
19
20
-40 -20 0 20 40 60 80 100 -40 -20 0 20 40 60 80 100
-40 -20 0 20 40 60 80 100 -40 -20 0 20 40 60 80 100
70
20
30
40
50
60
100
60
70
80
90
-80
-130
-120
-110
-100
-90
-60
-120
-110
-100
-90
-80
-70
Total harmonic distortion, THD -- %
Output power, PO --W
Quiescent current, ICCO -- mA
Supply voltage, VCC -- V
No load
Output power, PO --W
Voltage gain, VG -- dB
Noise voltage, VNO -- μVrms
Channel separation, CHsep -- dB
MUTE attenuation level, MUTE -- dBV
MUTE attenuation level, MUTE -- dBV
Ambient temperature, Ta -- °C Ambient temperature, Ta -- °C
Ambient temperature, Ta -- °C Ambient temperature, Ta -- °C
Ambient temperature, Ta -- °C Ambient temperature, Ta -- °C
VCC
=
5V
RL
=
8Ω
fin
=
1kHz
VG
=
19.1dB
V2
=
0.3V
Stabdby mode
VCC
=
5V
RL
=
8Ω
fin
=
1kHz
VG
=
19.1dB
V6
=
4V
2nd amplifier power down mode
LV49821VH
No.A1468-14/15
ICCO -- Ta ISTBY -- Ta
V2th -- Ta V6th -- Ta
-40 -20 0 20 40 60 80 100 -40 -20 0 20 40 60 80 100
-40 -20 0 20 40 60 80 100 -40 -20 0 20 40 60 80 100
10
0
2
4
6
8
0.0001
0.001
0.1
1
2
3
5
7
0.01
2
3
5
7
2
3
5
7
2
3
5
7
1.0
0.6
0.7
0.8
0.9
3.6
3.2
3.3
3.4
3.5
100ms/div
BTL OUT: 50mV/div, AC
t -- ms 100ms/divt -- ms
10ms/divt -- ms 10ms/divt -- ms
BTL OUT: 50mV/div, AC
BTL OUT: 50mV/div, AC BTL OUT: 50mV/div, AC
Quiescent current, ICCO -- mA
Ambient temperature, Ta -- C Ambient temperature, Ta -- C
2pin threshold voltage, V2th -- V
6pin threshold voltage, V6th -- V
Ambient temperature, Ta -- CAmbient temperature, Ta -- C
Standby Power ON Power ON Standby
4pin voltage: 2V/div
2pin voltage: 2V/div
4pin voltage: 2V/div
6pin voltage: 5V/div
6pin: High Low 6pin: Low High
4pin voltage: 2V/div
6pin voltage: 5V/div
4pin voltage: 2V/div
2pin voltage: 2V/div
BTL mode
SE mode
LV49821VH
PS No.A1468-15/15
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