TDA7265B
30 W + 30 W stereo amplifier with mute and standby
Features
■
Wide-range supply voltage (up to ± 35 V ABS
max.)
■
Split supply
■
High output power
■
30 W + 30 W at THD=10%, RL = 8 Ω, VS ± 23 V
■
25 W + 25 W at THD=1%, RL = 8 Ω, VS ± 23 V
■
No “pop” at turn-on/off
■
Mute (“pop-free”)
■
Standby feature (low IQ)
■
Short-circuit protection
■
Thermal overload protection
Multiwatt11 (vertical)
applications such as home entertainment
systems and stereo TV sets.
The device is pin-to-pin compatible with the
TDA7265, TDA7269A and TDA7292.
Description
Table 1.
The TDA7265B is class-AB dual audio power
amplifier assembled in the Multiwatt package,
especially designed for high-quality sound
Figure 1.
Device summary
Order code
Package
Packing
TDA7265B
Multiwatt11 (vertical)
Tube
Typical application circuit in split supply
+VS
15K
1000μF
1µF
MUTE/
ST-BY
IN (L)
7
+5V
+
4
OUT (L)
8
IN- (L)
-
1µF
15K
3
5
18K
GND
18K
4.7Ω
RL (L)
100nF
560Ω
9
µP
10
IN- (R)
560Ω
18K
1µF
IN (R)
11
-
2
+
1
6
-VS
OUT (R)
4.7Ω
RL (R)
100nF
1000mF
D94AU085
December 2011
Doc ID 022601 Rev 1
1/18
www.st.com
1
Contents
TDA7265B
Contents
1
Pin connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2
Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.1
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.2
Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.3
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3
Typical operating characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4
Mute standby function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
5
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5.1
Stereo configuration circuit and PCB layout . . . . . . . . . . . . . . . . . . . . . . . 11
5.2
Application suggestions for stereo configuration . . . . . . . . . . . . . . . . . . . 13
5.3
Single supply circuit configuration and PCB layout . . . . . . . . . . . . . . . . . 14
6
Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
7
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2/18
Doc ID 022601 Rev 1
TDA7265B
List of tables
List of tables
Table 1.
Table 2.
Table 3.
Table 4.
Table 5.
Table 6.
Table 7.
Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Electrical characteristcs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Recommended values of the external components in the TDA7265B demonstration
board schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Mute, standby truth table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Doc ID 022601 Rev 1
3/18
List of figures
TDA7265B
List of figures
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Figure 7.
Figure 8.
Figure 9.
Figure 10.
Figure 11.
Figure 12.
Figure 13.
Figure 14.
Figure 15.
Figure 16.
Figure 17.
Figure 18.
Figure 19.
Figure 20.
4/18
Typical application circuit in split supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Pin connections (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Quiescent current vs. supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Frequency response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
THD vs. output power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Output power vs. supply voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Quiescent current vs. pin 5 voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Attenuation vs. pin 5 voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Crosstalk vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Power dissipation vs. output power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Mute/standby thresholds on pin 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Test and application circuit (stereo configuration) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Soldering side (bottom). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Component side (top) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Typical application circuit in single supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Soldering side (bottom). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Component side (top) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Multiwatt 11 (vertical) mechanical data & package dimensions . . . . . . . . . . . . . . . . . . . . . 16
Doc ID 022601 Rev 1
TDA7265B
1
Pin connections
Pin connections
Figure 2.
Pin connections (top view)
TAB CONNECTED TO PIN 6
Doc ID 022601 Rev 1
11
IN+(1)
10
IN-(1)
9
GND
8
IN-(2)
7
IN+(2)
6
-VS
5
MUTE/St-By
4
OUTPUT(2)
3
+VS
2
OUTPUT(1)
1
-VS
D95AU316
5/18
Electrical specifications
TDA7265B
2
Electrical specifications
2.1
Absolute maximum ratings
Table 2.
Absolute maximum ratings
Symbol
Description
Value
Unit
±35
V
VS
DC supply voltage
IO
Output peak current (internally limited)
5
A
Ptot
Power dissipation Tcase = 70 °C
40
W
Top
Operating temperature
-20 to 85
°C
-40 to +150
°C
Tstg, Tj
Storage and junction temperature
2.2
Thermal data
Table 3.
Thermal data
Symbol
Parameter
Rth j case
Thermal resistance junction-casetyp.
2.3
Value
Unit
1.5
°C/W
Electrical characteristics
Refer to the test circuit, VS = ± 23 V; RL = 8 Ω; Rs = 50 Ω; GV = 30 dB; f = 1 kHz;
Tamb = 25 °C, unless otherwise specified.
Table 4.
Electrical characteristcs
Symbol
Parameter
VS
Supply range
Iq
Total quiescent current
VOS
Test condition
Non-inverting input bias current
PO
Output power
Typ.
±8
50
Input offset voltage
Ib
Min.
–20
Max.
Unit
±33
V
130
mA
+20
mV
500
nA
THD = 10%; RL = 8 Ω
30
W
THD = 1%; RL = 8 Ω
25
W
4
A
0.02
%
70
dB
IPeak
Output peak current
(Internally limited)
THD
Total harmonic distortion
RL = 8 Ω, Po = 1 W
CT
Crosstalk
f = 1 kHz
SR
Slew rate
11
V/ms
Gol
Open-loop voltage gain
80
dB
eN
Total input noise
4
µV
Ri
Input resistance
20
kΩ
6/18
F = 20 Hz – 22 kHz
Doc ID 022601 Rev 1
3.6
TDA7265B
Table 4.
Symbol
SVR
Tj
Electrical specifications
Electrical characteristcs (continued)
Parameter
Test condition
Min.
Typ.
Max.
Unit
Supply voltage rejection
75
dB
Thermal shutdown
145
°C
Mute function { ref.: +Vs }
VTmute Mute / play threshold
Am
-7
Mute attenuation
-6
-5
75
V
dB
Standby function { ref.: +Vs }
VTst-by Standby / mute threshold
Ast-by
Iq
-3.5
Standby attenuation
Quiescent current at standby
Doc ID 022601 Rev 1
-2.5
-1.5
V
110
dB
8
mA
7/18
Typical operating characteristics
TDA7265B
3
Typical operating characteristics
Figure 3.
Quiescent current vs. supply
voltage
Figure 4.
Iq (mA)
Frequency response
Ampl (dB)
55
+5
+4
50
Vs=+/-23V
+3
Rl = 8 Ohm
+2
0dB = 1W
Iq+
45
+1
+0
40
Iq-
-1
-2
35
-3
-4
30
8
10
12
14
16
18
20
22
24
26
28
30
32
34
-5
20
10
50
100 200
500
Vs (+/-V)
Figure 5.
THD vs. output power
Figure 6.
2k
5k
10k 20k
50k
200k
Output power vs. supply voltage
Pout (W)
THD (%)
10
50
5
45
Vs= +/-23V
2
1k
Freq(Hz)
Rl = 8 Ohm
40
Rl= 8 Ohm
f = 1Kz
35
1
30
0.5
THD=10%
25
0.2
f = 15KHz
20
0.1
15
0.05
0.02
0.01
100m
THD=1%
10
f = 1KHz
5
0
200m
500m
1
2
5
10
20
40
10
12
8/18
14
26
28
20
Vs (+/-V)
Pout (W)
Doc ID 022601 Rev 1
22
24
26
28
30
TDA7265B
Figure 7.
Typical operating characteristics
Quiescent current vs. pin 5 voltage Figure 8.
Attenuation vs. pin 5 voltage
Attenuation (dB)
Iq (mA)
+10
100
90
+0
80
-10
70
Vs=+/-20V
60
Rl=8Ohm
-20
Vs= +/-20V
-30
Rl= 8 Ohm
50
0V = +Vs
-40
f =1KHz
40
Vi = 0
-50
OdB = 1V
30
-60
0V = +Vs
20
-70
10
-80
0
-90
-10
-9
-8
-7
-6
-5
-4
-3
-2
-1
0
-100
-10
Vpin # 5 (V)
-9
-8
-7
-6
-5
-4
-3
-2
-1
-0
Vpin #5 (V)
Figure 9.
Crosstalk vs. frequency
Figure 10. Power dissipation vs. output power
Crosstalk (dB)
Pdiss (W)
-30
40
-35
35
Vs=+/- 26V
-40
A
f = 1KHz
Rl = 8 Ohm
-45
Rl =8 Ohm
30
Rs= 50 Ohm
Vs= +/- 24V (A)
Vs= +/-20V (B)
25
-50
20
-55
B
Right to
Left
-60
15
10
-65
5
-70
Left to Right
-75
0
0.1
-80
20
50
100
200
500
1k
2k
5k
10k
20k
1
2xPout (W)
10
100
Frequency (Hz)
Doc ID 022601 Rev 1
9/18
Mute standby function
4
TDA7265B
Mute standby function
Pin 5 (MUTE/St-By) controls the amplifier status using two different thresholds with
reference to +VS :
●
when Vpin5 is greater than or equal to +VS - 2.5 V, the amplifier is in standby mode and
the final stage generators are off
●
when Vpin5 is between +VS - 2.5V and +VS 6 V, the final stage current generators are
switched on and the amplifier is in mute mode
●
when Vpin5 is less than +VS - 6 V, the amplifier is in play mode.
Figure 11. Mute/standby thresholds on pin 5
+VS
(V)
26
t
-VS
-26
VIN
(mV)
Vpin5
(V)
VS
VS-2.5
VS-6
VS-10
Iq
(mA)
0
VOUT
(V)
PLAY
OFF
STDBY
PLAY
OFF
STDBY
STDBY
MUTE
10/18
D04AU1570
MUTE
Doc ID 022601 Rev 1
MUTE
MUTE
TDA7265B
Applications
5
Applications
5.1
Stereo configuration circuit and PCB layout
Figure 12. Test and application circuit (stereo configuration)
+VS
R2
C3
MUTE/
ST-BY
Q1
R1
IN (L)
SW1
ST-BY DZ
7
R3
+
4
OUT (L)
8
IN- (L)
-
GND
C5
3
5
C1
R4
C4
+VS
R7
R5
RL (L)
C8
R6
9
SW2
MUTE
10
R9
IN- (R)
R8
C2
IN (R)
11
-
2
+
1
R10
6
-VS
C7
OUT (R)
RL (R)
C9
C6
D94AU087B
Figure 13. Soldering side (bottom)
Doc ID 022601 Rev 1
11/18
Applications
TDA7265B
Figure 14. Component side (top)
Figure 15. Components
12/18
Doc ID 022601 Rev 1
TDA7265B
5.2
Applications
Application suggestions for stereo configuration
The recommended values of the external components are those shown in the application
circuit of Figure 12. If different values are used, the following table can be helpful.
Table 5.
Component
R1
R2
R3
R4
R5, R8
R6, R9
R7, R10
C1, C2
C3
C4, C6
C5, C7
C8, C9
Dz
Q1
1.
Recommended values of the external components in the TDA7265B demonstration
board schematic
Recomm.
Purpose
value
10 kΩ
15 kΩ
18 kΩ
15 kΩ
18 kΩ
560 Ω
4.7 Ω
1 µF
1 µF
1000 µF
0.1 µF
0.1 µF
5.1 V
BC107
Larger than
Smaller than
recommended value
recommended value
Mute circuit
Mute circuit
Mute circuit
Mute circuit
Increase of Dz biasing current
Vpin # 5 shifted downward
Vpin # 5 shifted upward
Vpin # 5 shifted upward
Increase of gain
Closed-loop gain setting(1)
Decrease of gain
Frequency stability
Danger of oscillations
Input DC decoupling
St-By/Mute time constant Larger on/off time
Supply voltage bypass
Supply voltage bypass
Frequency stability
Mute circuit
Mute circuit
Vpin # 5 shifted upward
Vpin # 5 shifted downward
Vpin # 5 shifted downward
Danger of oscillations
Higher low-frequency cutoff
Smaller on/off time
Danger of oscillations
Danger of oscillations
Closed-loop gain has to be ≥ 29 dB
Table 6.
Mute, standby truth table
SW1
SW2
B
B
A
A
A
B
A
B
Doc ID 022601 Rev 1
Standby
Standby
Mute
Play
13/18
Applications
5.3
TDA7265B
Single supply circuit configuration and PCB layout
Figure 16. Typical application circuit in single supply
+VS
D1 5.1V
R1
10K
R3
15K
C1
1μF
C5
1000μF
MUTE
PLAY
5V
IN (L)
Q1
BS107
0
MUTE
R2
15K
C2
100μF
3
5
7
C3 1μF
+
4
OUT (L)
8
IN- (L)
-
9
C4 1μF
IN (R)
11
C6
0.1μF
C9 470μF
R4
30K
R5
1K
+
2
IN- (R)
R8
4.7Ω
C7
0.1μF
OUT
(L)
C10 470μF
10
OUT (R)
R6
30K
R9
4.7Ω
C8
0.1μF
1
6
GND
R7
1K
D96AU444A
Figure 17. Soldering side (bottom)
14/18
Doc ID 022601 Rev 1
OUT
(R)
TDA7265B
Applications
Figure 18. Component side (top)
Figure 19. Components
Doc ID 022601 Rev 1
15/18
Package mechanical data
6
TDA7265B
Package mechanical data
In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK® packages, depending on their level of environmental compliance. ECOPACK®
specifications, grade definitions and product status are available at: www.st.com.
ECOPACK® is an ST trademark.
Figure 20. Multiwatt 11 (vertical) mechanical data & package dimensions
DIM.
mm
MIN.
TYP.
inch
MAX.
MIN.
TYP.
MAX.
A
5
0.197
B
2.65
0.104
C
1.6
D
OUTLINE AND
MECHANICAL DATA
0.063
1
0.039
E
0.49
0.55
0.019
F
0.88
0.95
0.035
0.022
G
1.45
1.7
1.95
0.057
0.067
0.077
G1
16.75
17
17.25
0.659
0.669
0.679
H1
19.6
0.037
0.772
H2
20.2
0.795
L
21.9
22.2
22.5
0.862
0.874
L1
21.7
22.1
22.5
0.854
0.87
0.886
L2
17.4
18.1
0.685
L3
17.25
17.5
17.75
0.679
0.689
0.699
L4
10.3
10.7
10.9
0.406
0.421
0.429
0.191
0.886
0.713
L7
2.65
2.9
0.104
M
4.25
4.55
4.85
0.167
0.179
0.114
M1
4.73
5.08
5.43
0.186
0.200
S
1.9
2.6
0.075
0.102
S1
1.9
2.6
0.075
0.102
Dia1
3.65
3.85
0.144
0.152
0.214
Multiwatt11 (Vertical)
0016035 H
16/18
Doc ID 022601 Rev 1
TDA7265B
7
Revision history
Revision history
Table 7.
Document revision history
Date
Revision
19-Dec-2011
1
Changes
Initial release.
Doc ID 022601 Rev 1
17/18
TDA7265B
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