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PDF TDA1910 Data sheet ( Hoja de datos )
| Número de pieza | TDA1910 | |
| Descripción | 10W AUDIO AMPLIFIER WITH MUTING | |
| Fabricantes | ST Microelectronics | |
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TDA1910
10W AUDIO AMPLIFIER WITH MUTING
DESCRIPTION
The TDA 1910 is a monolithic integrated circuit in
MULTIWATT® package, intended for use in Hi-Fi
audio power applications, as high quality TV sets.
The TDA 1910 meets the DIN 45500 (d = 0.5%)
guaranteed output power of 10W when used at
24V/4W. At 24V/8W the output power is 7W min.
Features:
– muting facility
– protection against chip over temperature
– very low noise
– high supply voltage rejection
– low ”switch-on” noise.
The TDA 1910 is assembled in MULTIWATT®
package that offers:
– easy assembly
– simple heatsink
ABSOLUTE MAXIMUM RATINGS
Symbol
Vs
Io
Io
Vi
Vi
V11
Ptot
Tstg, Tj
Parameter
Supply voltage
Output peak current (non repetitive)
Output peak current (repetitive)
Input voltage
Differential input voltage
Muting thresold voltage
Power dissipation at Tcase = 90°C
Storage and junction temperature
TEST CIRCUIT
Multiwatt 11
ORDERING NUMBERS:
TDA1910 (Multiwatt11 Vertical)
TDA1910HS (Multiwatt11 Horizontal)
– space and cost saving
– high reliability
Value
30
3.5
3.0
0 to + Vs
±7
Vs
20
-40 to 150
Unit
V
A
A
V
V
V
W
°C
May 1997
(*) See fig. 13.
1/14
1 page  
TDA1910
ELECTRICAL CHARACTERISTICS (continued)
Symbol
Parameter
Test condition
Min. Typ. Max. Unit
h Efficiency
Vs = 24V
RL = 4Ω
RL = 8Ω
f = 1 KHz
Po = 12W
Po = 7.5W
62
65
%
BW Small signal bandwidth
Vs = 24V
RL = 4Ω Po = 1W
10 to 120,000
Hz
BW Power bandwidth
Vs = 24V
Po = 12W
RL = 4Ω
d ≤ 5%
40 to 15,000
Hz
Gv Voltage gain (open loop)
f = 1 KHz
75 dB
Gv Voltage gain (closed loop)
Vs = 24V
f = 1 KHz
RL = 4Ω
Po = 1W
29.5 30 30.5 dB
eN Total input noise
Rg = 50Ω
Rg = 1KΩ
Rg = 10KΩ
(°)
1.2 3.0
1.3 3.2 µV
1.5 4.0
Rg = 50Ω
Rg = 1KΩ
Rg = 10KΩ
(°°)
2.0 5.0
2.0 5.2 µV
2.2 6.0
S/N Signal to noise ratio
Vs = 24V
Po = 12W
RL = 4Ω
Rg = 10KΩ
Rg = 0
Rg = 10KΩ
Rg = 0
(°)
(°°)
103
97 105
100
93 100
dB
dB
SVR Supply voltage rejection
Vs = 24V
RL = 4Ω
fripple = 100 Hz Rg = 10 KΩ
50 60
dB
Tsd Thermal sjut-down case (*)
temperature
Ptot = 8W
110 125
°C
MUTING FUNCTION (Refer to Muting circuit)
VT Muting-off threshold voltage
(pin 11)
VT
Muting-on threshold voltage
(pin 11)
R1 Input resistance (pin 1)
R11 Input resistance (pin 11)
AT Muting attenuation
Muting off
Muting on
Rg + R1 = 10 KΩ
1.9 4.7 V
0 1.3
V
6 Vs
80 200
KΩ
10 30 Ω
150 KΩ
50 60
dB
Note :
(°) Weighting filter = curve A.
(° °) Filter with noise bandwidth: 22 Hz to 22 KHz.
(*) See fig. 29 and fig. 30.
5/14
5 Page 
TDA1910
APPLICATION SUGGESTION
The recommended values of the components are those shown on application circuit of fig. 21. Different
values can be used.
The following table can help the designer.
Component
Raccom.
value
Purpose
Larger than
Smaller than
recommended value recommended value
Allowed range
Min.
Max.
Rg + R1
10KΩ
Input signal imped.
for muting operation
Increase of the atte- Decrease of the
nuation in muting-on attenuation in muting
condition. Decrease on condition.
of the input sensitivity.
R2
3.3KΩ Close loop gain
Increase of gain.
Decrease of gain.
9 R3
setting.
Increase quiescent
current.
R3
100Ω Close loop gain
Decrease of gain.
Increase of gain.
setting.
R2/9
R4 1Ω Frequency stability Danger of oscillation
at high frequencies
with inductive loads.
P1 20KΩ Volume
potentiometer.
Increase of the
switch-on noise.
Decrease of the input
impedance and of the
input level.
10KΩ
100KΩ
C1 1 µF Input DC decoupling.
C2 1 µF
C3 0.22µF
Higher low frequency
cutoff.
C4
2.2µF Inverting input DC
Increase of the
Higher low frequency 0.1µF
decoupling.
switch-on noise.
cutoff.
C5 0.1µF Supply voltage
bypass.
Danger of oscillations.
C6
10µF Ripple rejection.
Increase of SVR.
Degradation of
Increase of the
SVR
switch-on time
2.2µF 100µF
C7 47µF Bootstrap.
Increase of the distor- 10µF
tion at low frequency.
100µF
C8 0.22µF Frequency stability.
C9 2200µF Output DC
(RL = 4Ω) decoupling.
1000 µF
(RL = 8Ω)
Danger of oscillation.
Higher low frequency
cutoff.
11/14
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