TDA2052_03 [STMICROELECTRONICS]
60W Hi-Fi AUDIO POWER AMPLIFIER WITH MUTE / STAND-BY; 60W高保真音频功率放大器静音/ STAND -BY
| 型号： | TDA2052_03 |
| 厂家： | 
ST |
| 描述： | 60W Hi-Fi AUDIO POWER AMPLIFIER WITH MUTE / STAND-BY |
| 文件： | 总14页 (文件大小：4117K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TDA2052
®
60W Hi-Fi AUDIO POWER AMPLIFIER
WITH MUTE / STAND-BY
SUPPLY VOLTAGE RANGE UP TO ±25V
SPLIT SUPPLY OPERATION
HIGH OUTPUT POWER
(UP TO 60W MUSIC POWER)
LOW DISTORTION
MUTE/STAND-BY FUNCTION
NO SWITCH ON/OFF NOISE
AC SHORT CIRCUIT PROTECTION
THERMAL SHUTDOWN
Heptawatt V
Heptawatt H
TDA2052H
ESD PROTECTION
ORDERING NUMBERS:
TDA2052V
DESCRIPTION
est power into both 4Ω and 8Ω loads even in
The TDA2052 is a monolithic integrated circuit in
Heptawatt package, intended for use as audio
class AB amplifier in TV or Hi-Fi field application.
Thanks to the wide voltage range and to the high
out current capability it’s able to supply the high-
presence of poor supply regulation.
The built in Muting/Stand-by function simplifies
the remote operations avoiding also switching on-
off noises.
TEST AND APPLICATION CIRCUIT
January 2003
1/14
This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
TDA2052
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
±25
Unit
V
VS
IO
DC Supply Voltage
Output Peak Current (internally limited)
Power Dissipation Tcase = 70°C
Operating Temperature Range
6
A
Ptot
30
W
Top
0 to +70
-40 to +150
°C
°C
Tstg, Tj
Storage and Junction Temperature
PIN CONNECTION (Top view)
7
6
5
4
3
2
1
NON INVERTING INPUT(PLAY)
INVERTING INPUT
NON INVERTING INPUT(MUTE)
-VS
STAND-BY/MUTE
+VS
OUTPUT
tab connected to pin 4
D95AU326
BLOCK DIAGRAM
2/14
TDA2052
THERMAL DATA
Symbol
Description
Value
Unit
Rth j-case
Thermal Resistance Junction-case
Max
2.5
°C/W
ELECTRICAL CHARACTERISTICS (Refer to the test circuit, GV = 32dB; VS + 18V; f = 1KHz; Tamb
=
°
25 C, unless otherwise specified.)
Symbol
VS
Parameter
Supply Range
Test Condition
Min.
Typ.
Max.
Unit
V
+6
20
+25
70
Iq
Total Quiescent Current
Input Bias Current
VS = +22V
40
mA
µA
mV
nA
Ib
+0.5
+15
+200
VOS
IOS
Input Offset Voltage
Input Offset Current
PO
Music Output Power
IEC268-3 Rules (*)
VS = + 22.5, RL = 4Ω,
d = 10%, t = 1s
50
60
W
PO
Output Power (continuous RMS) d = 10%
RL = 4Ω
RL = 8Ω
VS = +22V, RL = 8Ω
35
30
40
22
33
W
W
W
d = 1%
RL = 4Ω
RL = 8Ω
VS = +22V, RL = 8Ω
32
17
28
W
W
W
d
Total Harmonic Distortion
RL = 4Ω
PO = 0.1 to 20W;
f = 100Hz to 15KHz
0.1
0.7
0.5
%
VS + 22V, RL = 8Ω
PO = 0.1 to 20W;
f = 100Hz to 15KHz
0.1
5
%
V/µs
dB
SR
GV
eN
Slew Rate
3
Open Loop Voltage Gain
Total Input Noise
80
A Curve
f = 20Hz to 20KHz
2
3
µV
µV
10
Ri
SVR
TS
Input Resistance
500
40
KΩ
dB
°C
Supply Voltage Rejection
Thermal Shutdown
f = 100Hz, Vripple = 1VRMS
50
145
MUTE/STAND-BY FUNCTION (Ref. –VS)
VTST-BY
VTPLAY
Iq ST-BY
ATTST-BY
Ipin3
Stand-by - Threshold
Play Threshold
1
1.8
2.7
1
V
V
4
3
Quiescent Current @ Stand-by
Stand-by Attenuation
Pin 3 Current @ Stand-by
Vpin 3 = 0.5V
mA
dB
µA
70
90
–1
+10
Note (*):
MUSIC POWER CONCEPT
MUSIC POWER is ( according to the IEC clauses n.268-3 of Jan 83) the maximal power which the amplifier is capable of producing across the
rated load resistance (regardless of non linearity) 1 sec after the application of a sinusoidal input signal of frequency 1KHz.
According to this definition our method of measurement comprises the following steps:
1) Set the voltage supply at the maximum operating value -10%
2) Apply a input signal in the form of a 1KHz tone burst of 1 sec duration; the repetition period of the signal pulses is > 60 sec
3) The output voltage is measured 1 sec from the start of the pulse
4) Increase the input voltage until the output signal show a THD = 10%
5) The music power is then V2out/R1, where Vout is the output voltage measured in the condition of point 4) and R1 is the rated load impedance
The target of this method is to avoid excessive dissipation in the amplifier.
3/14
TDA2052
APPLICATIONS SUGGESTIONS (See Test and Application Circuit)
The recommended values of the external components are those shown on the application circuit. Differ-
ent values can be used; the following table can help the designer.
Comp.
Value
Purpose
Larger Than
Smaller Than
R1
22KΩ (*)
Input Impedance
Increase of Input
Impedance
Decrease of Input
Impedance
R2
R3
R4
R5
R6
C1
560Ω
22KΩ (*)
22KΩ (*)
22KΩ
Closed Loop Gain set to
32dB (**)
Decrease of Gain
Increase of Gain
Increase of Gain
Decrease of Gain
Input Impedance @ Mute
Stand-by Time Constant
Frequency Stability
4.7Ω
Danger of oscillations
Danger of oscillations
1µF
Input DC Decoupling
Higher Low-frequency
cut-off
C2
10µF
Feedback DC Decoupling
Higher Low-frequency
cut-off
C3
C4
10µF
Stand-by Time Constant
Frequency Stability
0.100µF
1000µF
Danger of Oscillations
C5, C6
Supply Voltage Bypass
(*) R1 = R3 = R4 for POP optimization
(**) Closed Loop Gain has to be ≥ 30dB
TYPICAL CHARACTERISTICS
Figure 2: Distortion vs. Output Power
Figure 1: Output Power vs. Supply Voltage
4/14
TDA2052
Figure 3: Output Power vs. Supply Voltage.
Figure 4: Distortion vs. Output Power.
Figure 5: Distortion vs. Frequency.
Figure 6: Distortion vs. Frequency.
Figure 8: Supply Voltage Rejection vs. Frequency.
Figure 7: Quiescent Current vs. Supply Voltage
5/14
TDA2052
Figure 9: Bandwidth.
Figure 10: Output Attenuation & Quiescent Cur-
rent vs. Vpin3
.
Figure 11: Total Power Dissipation & Efficiency
Figure 12: Total Power Dissipation & Efficiency
vs. Output Power.
vs. Output Power.
6/14
TDA2052
Figure 13: P.C. Board and Components Layout of the Circuit of Fig. 14 (1:1 scale)
Figure 14: Demo Board Schematic.
7/14
TDA2052
ators are off. Only the input MUTE stage is on in
order to prevent pop-on problems.
At Vpin3=1.8V the final stage current generators
are switched on and the amplifier operates in
MUTE.
MUTE/STAND-BY FUNCTION
The pin 3 (MUTE/STAND-BY) controls the ampli-
fier status by three different thresholds, referred
to -VS.
When its voltage is lower than the first threshold
(1V, with a +70mV hysteresis), the amplifier is in
STAND-BY and all the final stage current gener-
For Vpin3 =2.7V the amplifier is definitely on
(PLAY condition)
Figure 15.
8/14
TDA2052
SHORT-CIRCUIT PROTECTION
THERMAL PROTECTION
The TDA 2052 has an original circuit which pro-
tects the device during accidental short-circuit be-
tween output and GND / -Vs / +Vs, taking it in
STAND-BY mode, so limiting also dangerous DC
current flowing throught the loudspeaker.
The thermal protection operates on the 125µA
current generator, linearly decreasing its value
from 90°C on. By doing this, the A voltage slowly
decreases thus switching the amplifier first to
MUTE (at 145°C) and then to STAND-BY
°
(155 C).
If a short-circuit or an overload dangerous for the
final transistors are detected, the concerned SOA
circuit sends out a signal to the latching circuit
µ
Thermal Protection Block Diagram
(with a 10 s delay time that prevents fast random
Figure 16:
spikes from inadvertently shutting the amplifier
off) which makes Q1 and Q2 saturate (see Block
Diagram). Q1 immediately short-circuits to ground
the A point turning the final stage off while Q2
short-circuits to ground the external capacitor
driving the pin 3 (Mute/Stand-by) towards zero
potential.
Only when the pin 3 voltage becomes lower than
1V, the latching circuit is allowed to reset itself
and restart the amplifier, provided that the short-
circuit condition has been removed. In fact, a win-
dow comparator is present at the output and it is
aimed at preventing the amplifier from restarting if
the output voltage is lower than 0.35 Total Supply
Voltage or higher than 0.65 Total Supply Voltage.
If the output voltage lies between these two
thresholds, one may reasonably suppose the
short-circuit has been removed and the amplifier
may start operating again.
The maximum allowable power dissipation de-
pends on the size of the external heatsink (ther-
mal resistance case-ambient); figure 17 shows
the dissipable power as a function of ambient
temperature for different thermal resistance.
The PLAY/MUTE/STAND-BY function pin (pin 3)
is both ground- and positive supply-compatible
and can be interfaced by means of the R5, C3 net
µ
either to a TTL or CMOS output ( -Processor) or
to a specific application circuit.
The R5, C3 net is fundamental, because connect-
ing this pin directly to a low output impedance
driver such as TTL gate would prevent the correct
operation during a short-circuit. Actually a final
stage overload turns on the protection latching
circuit that makes Q2 try to drive the pin 3 voltage
under 0.8 V. Since the maximum current this pin
can stand is 3 mA, one must make sure the fol-
lowing condition is met:
Figure 17: Maximum Allowable Power Dissipa-
tion vs. Ambient Temperature.
(
−
3mA
)
VA 0.7V
≥
R5
Ω
that yields: R5, min = 1.5 K with VA=5V.
In order to prevent pop-on and -off transients, it is
advisable to calculate the C3, R5 net in such a
way that the STAND-BY/MUTE and MUTE/PLAY
threshold crossing slope (positive at the turn-on
and vice-versa) is less than 100 V/sec.
9/14
TDA2052
- reduced power level required of each individ-
ual amplifier
- complete separation of the ways (if an ampli-
fier is affected by clipping distortion, the oth-
ers are not)
- protection of tweeters (the high power har-
monics generated by low frequency clipping
can not damage the delicate tweeters that are
driven by independent power amplifier)
- high power dedicated to low frequencies
APPLICATION NOTES
90W MULTIWAY SPEAKER SYSTEM
The schematic diagram of figure 18, shows the
solution that we have closen as a suggestion for
Hi-Fi and especially TV applications.
The multiway system provides the separation of
the musical signal not only for the loudspeakers,
but also for the power amplifiers with the following
advantages:
Figure 18: Multiway Application Circuit
10/14
TDA2052
As shown in Figure 19, the R-C passive network
for low-pass and High-pass give a cut with a
slope of 12dB/octave
Figure 19: Frequency Response
A further advantage of this application is that con-
necting each speaker direcly to its amplifier, the
musical signal is not modified by the variations of
the impedance of the crossover over frequency.
The subwoofer is designed for obtaining high
sound pressure level with low distortion without
stereo effect.
In the application of figure 18, the subwoofer
plays the 20 to 300 Hz frequency range, while the
remaining 300 Hz to 20KHz are sent to two sepa-
rate channels with stereo effect.
The multiway system makes use of three
TDA2052, one for driving the subwoofer with
POUT higher than 40W (THD = 10%), 28W undis-
torted (THD = 0.01%), while the others two
TDA2052 are used for driving the mid/high fre-
quency speakers of L/R channels, delivering
POUT = 25W (THD = 10%) and 20W @ THD =
0.01%
Figure 20: Distortion vs Output Power
Figure 21:Distortion vs Output Power
(Subwoofer)
(Midrange/Tweeter)
11/14
TDA2052
mm
inch
DIM.
MIN. TYP. MAX. MIN. TYP. MAX.
OUTLINE AND
A
C
D
D1
E
E1
F
4.8
1.37
2.8
1.35 0.047
0.55 0.014
0.97 0.028
0.189
0.054
0.110
0.053
0.022
0.038
0.031
MECHANICAL DATA
2.4
1.2
0.35
0.7
0.094
Weight: 1.90gr
0.6
0.8
0.024
G
2.34
4.88
7.42
2.54
5.08
7.62
2.74 0.095 0.100 0.105
5.28 0.193 0.200 0.205
7.82 0.295 0.300 0.307
G1
G2
H2
H3
L
L1
L2
L3
L4
L5
L6
L7
L9
L10
L11
M
10.4
10.4 0.396
0.409
0.409
10.05
16.7
16.9
14.92
17.1 0.657 0.668 0.673
0.587
21.24 21.54 21.84 0.386 0.848 0.860
22.27 22.52 22.77 0.877 0.891 0.896
1.29
3
0.051
0.102 0.110 0.118
2.6
15.1
6
2.8
15.5
6.35
0.2
15.8 0.594 0.610 0.622
6.6
0.236 0.250 0.260
0.008
2.1
4.3
2.55
4.83
2.7
4.8
0.082
0.169
0.106
0.190
2.8
5.08
3.05 0.100 0.110 0.120
5.33 0.190 0.200 0.210
40 (typ.)
M1
V4
Dia
Heptawatt V
3.65
3.85 0.144
0.152
L
E
L1
M1
M
A
D
C
D1
H2
L2
L3
F
L5
E1
E
V4
L9
H3
G
G1 G2
Dia.
F
L10
L4
H2
L11
L7
L6
HEPTAMEC
0016069
12/14
TDA2052
mm
inch
DIM.
MIN.
TYP. MAX. MIN.
4.80
TYP. MAX.
0.188
OUTLINE AND
MECHANICAL DATA
A
C
1.37
0.054
D
2.40
1.20
0.35
0.70
0.60
2.34
4.88
7.42
2.80 0.094
1.35 0.047
0.55 0.014
0.11
D1
E
0.053
0.022
E1
F
0.97
0.03
0.036
0.80 0.024
2.74 0.092
5.28 0.192
0.031
G
2.54
5.08
7.62
0.1
0.2
0.3
0.108
0.208
0.307
0.41
G1
G2
H2
H3
L1
L2
L3
L4
L5
L6
L7
L9
L10
L13
V5
DIA
7.8
0.292
10.40
10.05
3.90
10.40 0.395
0.409
4.20
4.50 0.153 0.165 0.177
18.10 18.40 18.70 0.712 0.724 0.736
4.88
5.08
5.28 0.192
1.29
0.2
0.208
0.05
2.60
15.10
6.00
3.9
3.00 0.102
15.80 0.594
6.60 0.236
0.118
0.622
0.260
4.2
4.5
0.153 0.165 0.177
2.10
4.30
2.70 0.083
4.80 0.169
0.106
0.189
Heptawatt H
89˚ (Min.), 90˚ (Typ.), 91˚ (Max.)
3.85 0.143
3.65
0.151
C
A
V5
D
D1
L1
L9
L3
E
L2
F
G
L7
L4
L5
G1
G2
H2
H2
H3
F
E1
E
F
Dia.
L10
Resin between
leads
L11
L6
HEPTHMEC.EPS
0080180
13/14
TDA2052
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences
of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is
granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specification mentioned in this publication are
subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products
are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.
The ST logo is a registered trademark of STMicroelectronics
© 2003 STMicroelectronics – Printed in Italy – All Rights Reserved
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14/14
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