TDA1905 STMicroelectronics, TDA1905 Datasheet - Page 11

• Manufacturer Part Number: TDA1905
• Description: IC AMP AUDIO 5.5W MONO AB 16DIP
• Manufacturer: STMicroelectronics
• Type: Class ABr

Specifications of TDA1905

• Output Type: 1-Channel (Mono)
• Max Output Power X Channels @ Load: 5.5W x 1 @ 8 Ohm
• Voltage - Supply: 4 V ~ 30 V
• Features: Depop, Mute, Thermal Protection
• Mounting Type: Through Hole
• Package / Case: 16-DIP (0.300", 7.62mm)
• Amplifier Class: AB
• No. Of Channels: 1
• Output Power: 5W
• Supply Voltage Range: 4V To 30V
• Thd + N: 0.1% @ 1.5W, 4ohm, VS=9V
• Load Impedance: 4ohm
• Operating Temperature Range: -40°C To +150°C
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-2160-5

APPLICATION SUGGESTION
The recommended values of the external components are those shown on the application circuit of fig. 21.
When the supply voltage V
in order to obtain the maximum output power.
Different values can be used. The following table can help the designer.
Component
R
g
R
R
R
R
C
C
C
C
C
C
C
C
C
P
+ R
2
3
4
5
1
1
2
3
4
5
6
7
8
9
1
Raccom.
1000 F Output DC decoupling.
0.22 F
0.22 F
2.2 F
0.1 F
value
10K
10K
100
100
20K
10 F
47 F
1K
Input signal imped. for
muting operation
Feedback resistors
Frequency stability
Increase of the output
swing with low supply
voltage.
Volume potentiometer Increase of the
Input DC
decoupling.
Inverting input DC
decoupling.
Supply voltage
bypass.
Ripple rejection
Bootstrap.
Frequency stability.
s
is less than 10V, a 100 resistor must be connected between pin 2 and pin 3
Purpose
Increase of the
attenuation in muting-on
condition. Decrease of
the input sensitivity.
Increase of gain.
Decrease of gain.
Danger of oscillation at
high frequencies with
inductive loads.
switch-on noise.
Higher cost
lower noise.
Increase of the switch-
on noise.
Increase of SVR
increase of the
switch-on time
recommended value
Larger than
Decrease of the attenu-
ation in muting on
condition.
Decrease of gain.
Increase quiescent
current.
Increase of gain.
Decrease of the input
impedance and of the
input level.
Higher low
frequency cutoff.
Higher noise.
Higher low frequency
cutoff.
Danger of
oscillations.
Degradation of SVR
Increase of the
distortion at low
frequency.
Danger of oscillation.
Higher low frequency
cutoff.
recommended value
Smaller than
Allowed range
10K
0.1 F
2.2 F 100 F
10 F
Min.
9 R
47
TDA1905
3
100K
100 F
Max.
1K
330
11/14