Low Voltage 0.16 W x 2-Ch SE Class AB Power Amplifier for Portable Applications

Ordering number : ENA0932
Bi-CMOS IC
For Portable Audio Equipment
LV4992TT
Stereo SE Power Amplifier
Overview
The LV4992TT is the best LSI for the speaker drive for portable equipment that is battery drive, including the power
amplifier circuit capable of low voltage (from 2.7V) operation and stand-by function to reduce the consumption
current.
Functions and Features
• Built-in stereo SE power amplifier
Output power 1= 160mW (VCC = 3.6V, RL = 8Ω and THD = 10%)
Output power 2= 340mW (VCC = 5.0V, RL = 8Ω and THD = 10%)
Output power 3= 55mW (VCC = 3.6V, RL = 32Ω and THD = 10%)
Output power 4= 110mW (VCC = 5.0V, RL = 32Ω and THD = 10%)
• Enabling low voltage operation : VCC = from 2.7V
• Standby function : (supply current in standby mode : 0.1μA (standard) : (VCC = 3.6V)
• Thermal shut down circuit
• Enabling gain setting : Voltage gain (0 to 14dB)
• No capacitor for output phase compensation is necessary.
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Maximum supply voltage
Allowable power dissipation
Symbol
Conditions
VCC max
Pd max
Ratings
Unit
6
Substrate mounted*
V
750
mV
Operating temperature
Topr
-40 to +85
°C
Storage temperature
Tstg
-40 to +150
°C
* When mounted on the specified printed circuit board ( 58 × 89 × 1.6mm, glass epoxy, both side)
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.
92607 MS PC 20070903-S00001 No.A0932-1/10
LV4992TT
Operating Conditions at Ta = 25°C
Parameter
Symbol
Recommended supply voltage
VCC
Recommended load resistance
RL
Operating supply voltage range
VCC op
Conditions
Ratings
Unit
3.6
V
8 to 32
Ω
2.7 to 5.5
V
Note : Please determine supply voltage used with due consideration of allowable power dissipation
Electrical Characteristics Ta = 25°C, VCC = 3.6V, fin = 1kHz, RL = 8Ω
Parameter
Symbol
Ratings
Conditions
min
typ
Unit
max
Supply current during no signal
ICCOP
No signal
2.7
4.5
mA
Standby supply current
ISTBY
No signal, V2 = LOW
0.1
10
μA
Output power
POMX
THD = 10%
Voltage gain
VG
Voltage gain difference
100
160
5
6.5
VIN = -30dBV
VGR
Total harmonic distortion
THD
mW
0
8
dB
14
dB
VIN = -10dBV
0.1
1
Output noise voltage
VNOUT
Rg = 620Ω, 20 to 20kHz
65
195
Channel separation
CHSEP
PO = 50mW, Rg = 620Ω and 20 to 20kHz
Ripple rejection ratio
SVRR
Reference voltage (pin 3)
VREF
50
Rg = 620Ω, fr = 100Hz and Vr = -20dBV
%
μVrms
60
dB
47
dB
1.81
High level control voltage (pin 2)
VSTBH
Power amplifier operation mode
Low level control voltage (pin 2)
VSTBL
Power amplifier standby mode
V
1.9
VCC
V
0
0.3
V
Package Dimensions
3.0
0.5
3.0
4.9
8
2
0.65
0.125
1.1MAX
(0.85)
0.25
1000
900
Pd max – Ta
When mounted on the
specified printed circuit board :58×89×1.6mm3
glass epoxy board
Specified printed circuit board
800 (Both sides)
750
Specified printed circuit board
700 (Single sides)
650
600
500
400
390
338
300
200
100
0
– 40
– 20
0
20
40
60
80
100
Ambient temperature, Ta – °C
0.08
1
(0.53)
Allowable power dissipation, Pd max – mW
unit : mm (typ)
3245B
SANYO : MSOP8(150mil)
No.A0932-2/10
LV4992TT
Recommended Board Layout
1. Both side
Size : 58mm×89mm×1.6mm
Top Layer
Bottom Layer
2. Single side
Size : 58mm×89mm×1.6mm
Top Layer
Bottom Layer
No.A0932-3/10
LV4992TT
Block Diagram and Sample Application Circuit
R2
22kΩ
R1
C3
0.22μF 10kΩ
IN1
R3
10kΩ STBY
from CPU
VREF
C5
0.22μF
C4
1μF
IN2
R4
10kΩ
+
1
VCC
BIAS
2
AMP1
8
VCC
TSD
GND
3
+
-
4
V
+ C1 CC
2.2μF
C2
0.1μF
AMP2
7
6
5
OUT1
C6
220μF
+
VCC
SPEAKER
8Ω
GND
OUT2
C7
220μF
+
R5
22kΩ
SPEAKER
8Ω
Test Circuit
22kΩ
S1
0.22μF
10kΩ
620Ω
10kΩ
VSTBY
VIN
10kΩ
VCC
2.2μF
220μF
1
8
2
7
+
SPEAKER
8Ω
LA4992TT
1μF
0.22μF
S2
+
0.1μF
3
6
4
5
220μF
+
620Ω
22kΩ
SPEAKER
8Ω
No.A0932-4/10
LV4992TT
Pin Function
Pin No.
Pin name
1
IN1
4
IN2
Pin voltage
Description
VCC = 3.6V
1.81
Equivalent circuit
Input pin
VCC
1
4
2
STBY
3kΩ
+
Standby pin
•Standby mode (0 to 0.3V)
VCC
•Operation mode (1.9 to VCC)
21kΩ
3
VREF
1.81
40.7kΩ
121.4kΩ
2
GND
Ripple filter pin
(Capacity connection for filter)
100kΩ
VCC
VCC
450kΩ
101kΩ
3
GND
5
OUT2
8
OUT1
1.81
Power amplifier output pin
VCC
+
5
8
10kΩ
6
GND
0
7
VCC
3.6
Ground pin
Power supply pin
No.A0932-5/10
LV4992TT
Usage Note
1. Input coupling capacitor (C3 and C5)
Since the high pass filter is formated by the input coupling capacitor C3, C5 and the input resistance R1, R4, low
frequency attenuates. Therefore, it is necessary to select the capacitance value with due considelation of passband. The
capacitance value influences a shock noise when the switch is turned on, caution is demanded because the level of
shock noise becomes large when a bigger capacitance value is set.
2. The 3rd pin capacitor (C4)
The power supply ripple is reduced by the 3rd pin capacitor C4. The Ripple rejection ratio improves when the
capacitance value is large. However, this capacitor influences the shock noise and rise time of amplifier.
Please design with both characteristics in mind.
3. Standby pin (pin 2)
The standby mode and the operation mode can be switched by controlling the standby pin.
Standby mode ⇒ V2 = 0 to 0.3V
Operation mode ⇒ V2 = 1.9 to VCCV
In addition, caution is necesssary since the current IST flows to the standby pin when the standby pin is used by
working with power supply as shown in FIG.1.
VCC
VCC−1.4V
IST =
(Approximate value)
R3+21kΩ
VCC
R3
7
STBY
2
Fig. 1
4. Power supply bypass capacitor (C2)
The bypass capacitor must be inserted, as close as possible to the power supply pin (pin 7).
5. Short-circuit between terminals
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.
6. 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.
7. Maximum rating
When the rated value used is just below to the absolute maximum ratings value, there is a possibillity to exceed the
maxixmum 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.
No.A0932-6/10
LV4992TT
2.5
2
1.5
1
0.5
0
0
1
2
3
4
5
6
10
7
5
3
2
1
7
5
3
2
0.1
7
5
3
2
0.01
10
2
3
Total harmonic distortion, THD – %
1
7
5
3
2
0.1
7
5
3
2
0.01
2
10
3
5
7
2
100
3
5
7
1000
100
7
5
3
2
THD – f
10
7
5
3
2
1
7
5
3
2
0.1
7
5
3
2
0.01
10
600
VCC = 3.6V
RL = 8Ω
PO = 50mW
100Hz<BW<80kHz
500
dB
1
7
5
4
=1
dB
=6
G
V
dB
=0
G
V
VG
3
2
0.1
7
5
0.01
100
2
3
2
3
5 7 1k
2
3
5 7 10k
2
3
7 1000
5
7
2
100
3
5
7
1000
PO – VCC
THD = 10%
400
300
THD = 1%
200
0
1.5
5 7 100k
2.5
PO – VCC
180
fin = 1kHz
VG = 6dB
RL = 16Ω
160
250
THD = 10%
200
THD = 1%
150
100
50
0
1.5
3.5
4.5
5.5
6.5
Supply voltage, VCC – V
Output power, PO – mW
Output power, PO – mW
5
fin = 1kHz
VG = 6dB
RL = 8Ω
Frequency, f – Hz
300
3
100
3
2
350
2
Output power, PO – mW
Output power, PO – mW
Total harmonic distortion, THD – %
3
2
100
THD – PO
Output power, PO – mW
10
7
5
7
RL = 32Ω
VG = 6dB
fin = 1kHz
100Hz<BW<80kHz
VCC =
3V
THD – PO
RL = 16Ω
VG = 6dB
fin = 1kHz
100Hz<BW<80kHz
10
7
5
3
2
5
Output power, PO – mW
VCC =
5V
100
7
5
3
2
VCC =
3V
VCC =
3.6V
Total harmonic distortion, THD – %
Supply voltage, VCC – V
VCC = 5V
3
THD – PO
RL = 8Ω
VG = 6dB
fin = 1kHz
100Hz<BW<80kHz
VCC =
3.6V
Total harmonic distortion, THD – %
Supply current, ICCO – mA
3.5
100
7
5
3
2
VCC =
3V
ICCO – VCC
RL = Open
VCC = 5V
4
VCC =
3.6V
General
Characteristics
PO – VCC
fin = 1kHz
VG = 6dB
RL = 32Ω
140
THD = 10%
120
100
THD = 1%
80
60
40
20
2.5
3.5
4.5
Supply voltage, VCC – V
5.5
6.5
0
1.5
2.5
3.5
4.5
5.5
6.5
Supply voltage, VCC – V
No.A0932-7/10
LV4992TT
3
VCC = 5V
250
200
VCC = 3.6V
150
VCC = 3V
100
50
0
10
2
3
5
7
2
100
3
5
7
ICCO – VSTBY
VCC = 3.6V
VG = 6dB
RL = 8Ω
2.5
2
1.5
1
0.5
0
1000
0
1
65
60
SVRR – f
50
45
– 57
– 58
ch1 to ch2
– 59
ch2 to ch1
– 60
– 61
– 62
– 63
– 64
40
10
2
3
5 7 100
2
3
5 7 1k
2
3
– 65
5 7 10k
100
2
3
5 7 1k
Frequency, f – Hz
3
5 7 10k
2
3
5 7 100k
VG = 14dB
100
80
VG = 6dB
60
VG = 0dB
40
VCC = 3.6V
Rg = 620Ω
RL = 8Ω
20Hz<BW<20kHz
20
0
2.5
Temperature
Characteristics
3
3.5
4
4.5
5
5.5
Supply voltage, VCC – V
ICCO – Ta
3
Supply current, ICCO – mA
2.5
2
1.5
1
0.5
0
– 50
VCC = 3.6V
VG = 6dB
RL = Open
0
ICCO – VSTBY
3
50
Ambient temperature, Ta – °C
100
2.5
Ta = -40°C
Noise voltage, VNO – μVrms
120
2
Frequency, f – Hz
VNO – VCC
140
Supply current, ICCO – mA
4
RL = 8Ω
VG = 6dB
PO = 50mW
20Hz<BW<20kHz
– 56
55
3
CHSEP – f
– 55
VCC = 3.6V
VG = 6dB
RL = 8Ω
Rg = 620Ω
Vr = -20dBV
CVCC = 0.1μF
Channel separation, CHSEP – dB
Supply voltage ripple rejection, SVRR – dB
70
2
2pin voltage, VSTBY – V
Output power, PO – mW
2
1.5
Ta = 25°C
Ta = 85°C
Power dissipation, Pd – mW
300
Pd – PO
RL = 8Ω
VG = 6dB
fin = 1kHz
100Hz<BW<80kHz
Supply current, ICCO – mA
350
1
0.5
0
VCC = 3.6V
VG = 6dB
RL = 8Ω
0
1
2
3
4
2pin voltage, VSTBY – V
No.A0932-8/10
LV4992TT
9
Voltage gain, VG – dB
8
VG – Ta
80
VCC = 3.6V
RL = 8Ω
VIN = -30dB
fin = 1kHz
20Hz<BW<20kHz
70
Noise voltage, VNO – μV
10
7
6
5
4
3
2
VNO – Ta
VCC = 3.6V
Rg = 6Ω
RL = 8Ω
20Hz<BW<20kHz
60
50
40
30
20
10
1
0
– 50
0
50
0
– 50
100
Ambient temperature, Ta – °C
Output power, PO – mW
700
600
PO – Ta
800
RL = 8Ω
VG = 6dB
THD = 10%
fin = 1kHz
200Hz<BW<80kHz
700
Output power, PO – mW
800
500
VCC = 5V
400
300
200
VCC = 3.6V
100
VCC = 3V
0
– 50
0
50
600
500
400
VCC = 5V
300
200
VCC = 3.6V
VCC = 3V
0
– 50
100
0
PO – Ta
400
VCC = 5V
200
VCC = 3.6V
300
PO – Ta
RL = 16Ω
VG = 6dB
THD = 1%
fin = 1kHz
200Hz<BW<80kHz
200
VCC = 5V
100
VCC = 3.6V
VCC = 3V
0
– 50
0
50
VCC = 3V
0
– 50
100
Ambient temperature, Ta – °C
0
PO – Ta
300
RL = 32Ω
VG = 6dB
THD = 10%
fin = 1kHz
200Hz<BW<80kHz
200
VCC = 5V
100
VCC = 3.6V
PO – Ta
RL = 32Ω
VG = 6dB
THD = 1%
fin = 1kHz
200Hz<BW<80kHz
200
VCC = 5V
100
VCC = 3.6V
VCC = 3V
0
– 50
0
50
Ambient temperature, Ta – °C
100
50
Ambient temperature, Ta – °C
Output power, PO – mW
Output power, PO – mW
300
100
50
Ambient temperature, Ta – °C
RL = 16Ω
VG = 6dB
THD = 10%
fin = 1kHz
200Hz<BW<80kHz
100
100
PO – Ta
100
Output power, PO – mW
Output power, PO – mW
300
50
RL = 8Ω
VG = 6dB
THD = 1%
fin = 1kHz
200Hz<BW<80kHz
Ambient temperature, Ta – °C
400
0
Ambient temperature, Ta – °C
VCC = 3V
100
0
– 50
0
50
10
Ambient temperature, Ta – °C
No.A0932-9/10
Supply voltage ripple rejection, SVRR – dB
LV4992TT
SVRR – Ta
70
60
50
40
30
20
VCC = 3.6V
VG = 6dB
RL = 8Ω
Rg = 620Ω
Vr = -20dBV
10
0
– 50
0
50
100
Ambient temperature, Ta – °C
Shock Noise
1. Rising edge
2. Falling edge
2pin : 5V/div, DC
2pin : 5V/div, DC
STBY→PWR
STBY→PWR
speaker out : 10mV/div, AC
speaker out : 10mV/div, AC
3pin : 2V/div, DC
3pin : 2V/div, DC
200ms/div
200ms/div
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.
SANYO Semiconductor Co.,Ltd. strives to supply high-quality high-reliability products, however, any and all
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.
In the event that any or all SANYO Semiconductor Co.,Ltd. products described or contained herein are
controlled under any of applicable local export control laws and regulations, such products may require the
export license from the authorities concerned in accordance with the above law.
No part of this publication may be reproduced or transmitted in any form or by any means, electronic or
mechanical, including photocopying and recording, or any information storage or retrieval system, or otherwise,
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 September, 2007. Specifications and information herein are subject
to change without notice.
PS No.A0932-10/10