TDA7293
120-volt, 100-watt, DMOS audio amplifier
with mute and standby
Features
Multipower BCD technology
Very high operating voltage range (±50 V)
DMOS power stage
High output power (100 W into 8
Ω
@ THD =10%, with V
S
= ±40 V)
Muting and stand-by functions
No switch on/off noise
Very low distortion
Very low noise
Short-circuit protected (with no input signal
applied)
Thermal shutdown
Clip detector
Modularity (several devices can easily be
connected in parallel to drive very low
impedances)
Multiwatt15V
Multiwatt15H
class AB amplifier in Hi-Fi field applications, such
as home stereo, self powered loudspeakers and
Topclass TV. Thanks to the wide voltage range
and to the high output current capability it is able
to supply the highest power into both 4-Ω and 8-Ω
loads.
The built-in muting function with turn-on delay
simplifies the remote operation avoiding on-off
switching noises.
Parallel mode is possible by connecting several
devices and using pin11. High output power can
be delivered to very low impedance loads, so
optimizing the thermal dissipation of the system
Table 1.
Device summary
Package
Multiwatt15V
Multiwatt15H
Description
The TDA7293 is a monolithic integrated circuit in
Multiwatt15 package, intended for use as audio
Figure 1.
TDA7293 block diagram
C7 100nF
R3 22K
C2
22µF
+Vs
R2
680Ω
C1 470nF
IN-
2
7
-
Order code
TDA7293V
TDA7293HS
+Vs
C6 1000µF
BUFFER DRIVER
11
+PWVs
13
14
OUT
BOOT
LOADER
C5
22µF
6
5
BOOTSTRAP
CLIP DET
VCLIP
(*)
IN+
3
+
12
R1 22K
SGND
(**)
VMUTE
R5 10K
MUTE
10
MUTE
VSTBY
R4 22K
1
STBY-GND
C3 10µF
C4 10µF
8
-Vs
C9 100nF
-Vs
15
-PWVs
C8 1000µF
STBY
9
STBY
THERMAL
SHUTDOWN
S/C
PROTECTION
4
D97AU805A
(*) see Application note
(**) for SLAVE function
September 2010
Doc ID 6744 Rev 8
1/21
www.st.com
21
Contents
TDA7293
Contents
1
2
Pin connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1
2.2
2.3
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3
Circuit description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.1
3.2
3.3
Output Stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Other Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4
Applications information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.1
4.2
4.3
4.4
4.5
Applications suggestions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
High efficiency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Bridge application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Modular application (ref. figure 12) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Bootstrap capacitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5
Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5.1
5.2
Vertically-mounted package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Horizontally-mounted package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
6
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
2/21
Doc ID 6744 Rev 8
TDA7293
Pin connections
1
Pin connections
Figure 2.
Pin connections
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
-V
S
(POWER)
OUT
+V
S
(POWER)
BOOTSTRAP LOADER
BUFFER DRIVER
MUTE
STAND-BY
-V
S
(SIGNAL)
+V
S
(SIGNAL)
BOOTSTRAP
CLIP AND SHORT CIRCUIT DETECTOR
SIGNAL GROUND
NON INVERTING INPUT
INVERTING INPUT
STAND-BY GND
TAB CONNECTED TO PIN 8
D97AU806
Doc ID 6744 Rev 8
3/21
Electrical specifications
TDA7293
2
2.1
Electrical specifications
Absolute maximum ratings
Table 2.
Symbol
V
S
V
1
V
2
V
2
- V
3
V
3
V
4
V
5
V
6
V
9
V
10
V
11
V
12
I
O
P
tot
T
op
T
stg
, T
j
V
S
V
1
Absolute maximum ratings
Parameter
Supply voltage (no signal)
V
STANDBY
GND voltage referred to -V
S
(pin 8)
Input voltage (inverting) referred to -V
S
Maximum differential inputs
Input voltage (non inverting) referred to -V
S
Signal GND voltage referred to -V
S
Clip detector voltage referred to -V
S
Bootstrap voltage referred to -V
S
Standby voltage referred to -V
S
Mute voltage referred to -V
S
Buffer voltage referred to -V
S
Bootstrap loader voltage referred to -V
S
Output peak current
Power dissipation T
case
= 70°C
Operating ambient temperature range
Storage and junction temperature
Supply voltage (no signal)
V
STANDBY
GND voltage referred to -V
S
(pin 8)
±60
90
90
±30
90
90
120
120
120
120
120
100
10
50
0 to 70
150
±60
90
±1500
Value
V
V
V
V
V
V
V
V
V
V
V
V
A
W
°C
°C
V
V
V
Unit
ESD maximum withstanding voltage range,
V
ESD_HBM
test condition CDF-AEC-Q100-002- ”Human body
model”
2.2
Thermal data
Table 3.
Symbol
R
thj-case
Thermal data
Parameter
Thermal resistance junction to case
-
Min
1
Typ
Max
1.5
Unit
°C/W
4/21
Doc ID 6744 Rev 8
TDA7293
Electrical specifications
2.3
Electrical characteristics
The specifications given here were obtained with the conditions V
S
= ±40 V, R
L
= 8
Ω,
R
g
= 50
Ω,
T
amb
= 25 °C, f = 1 kHz unless otherwise specified.
Table 4.
Symbol
V
S
I
q
I
b
Electrical characteristics
Parameter
Supply range
Quiescent current
Input bias current
Input offset voltage
Input offset current
-
-
-
-
-
d = 1%, R
L
= 4
Ω,
V
S
= ±29 V
d = 10%, R
L
= 4Ω,
V
S
= ±29 V
P
O
= 5 W, f = 1 kHz
Total harmonic distortion
(1)
Test conditions
Min
±12
-
-
-10
-
75
90
-
-
-
5
-
29
-
-
100
-
-
-
-
50
0.3
-
-
80
80
100
100
0.005
-
6.5
10
80
30
1
3
-
75
150
160
Typ
Max
±50
100
1
10
0.2
-
-
-
0.1
-
-
-
31
-
10
-
-
-
-
V
mA
µA
mV
µA
W
W
%
%
A
V/µs
dB
dB
µV
µV
kΩ
dB
°C
°C
Unit
.
V
OS
I
OS
P
O
Continuous output power
d
P
O
= 0.1 to 50 W,
f = 20 Hz to 15 kHz
V
S
≤ ±
40 V
-
-
-
A = curve
I
SC
SR
G
V
G
V
e
N
R
i
SVR
Current limiter threshold
Slew rate
Open loop voltage gain
Closed loop voltage gain
(2)
Total input noise
f = 20 Hz to 20 kHz
Input resistance
Supply voltage rejection
-
f = 100 Hz,
V
ripple
= 0.5 V RMS
Device mutes
T
S
Thermal protection
Device shuts down
Standby function (ref. to to pin 1)
V
ST on
V
ST off
ATT
st-by
I
q st-by
Standby on threshold
Standby off threshold
Standby attenuation
Quiescent current @ standby
-
-
-
-
-
3.5
70
-
-
-
90
0.5
1.5
-
-
1
V
V
dB
mA
Mute function (ref. to pin 1)
V
Mon
V
Moff
ATT
mute
Mute on threshold
Mute off threshold
Mute attenuatIon
-
-
-
-
3.5
60
-
-
80
1.5
-
-
V
V
dB
Doc ID 6744 Rev 8
5/21
京公网安备 11010802033920号
EEWORLD
