TDA7493 STMicroelectronics, TDA7493 Datasheet - Page 11
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TDA7493
Manufacturer Part Number
TDA7493
Description
Audio Amplifiers 3W + 3W Dual BTL Class-D 4-Select dB
Manufacturer
STMicroelectronics
Datasheet
1.TDA7493.pdf
(30 pages)
Specifications of TDA7493
Amplifier Class
D
No. Of Channels
2
Output Power
3W
Supply Voltage Range
3V To 5.5V
Thd + N
0.05% @ 0.5W, 4ohm, VCC=5V
Load Impedance
4ohm
Operating Temperature Range
0°C To +70°C
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
TDA7493-13TR
Manufacturer:
ST
Quantity:
20 000
Company:
Part Number:
TDA749313TR
Manufacturer:
MXIC
Quantity:
1 101
TDA7493
5
5.1
Note:
5.2
Note:
Application information
Mode selection
Pin STANDBY selects the operating mode, namely standby or play.
During the turn on/off sequence, there are four operational states: standby, pre-charge,
mute and play. The pre-charge and mute states are two internal transient states to set up
the normal operating condition and to reduce the speaker pop noise.
Table 6.
An internal pull-down resistor on pin STANDBY ensures that the default mode is standby.
Gain setting
The close loop gain is set by pins GAIN0 and GAIN1 as shown below in
setting is implemented by changing the feedback resistors of the amplifiers.
Table 7.
Internal pull-down resistors on pins GAIN0 and GAIN1 ensure that the default gain is 6 dB.
0
1
0
0
1
1
Logic level on pin GAIN0
In standby mode, all the circuits are turned off and there is very low leakage current.
In play mode, the amplifiers are powered up.
Logic level on pin STANDBY
Mode selection
Gain selection
Doc ID 14570 Rev 5
0
1
0
1
Logic level on pin GAIN1
Standby
Play
6.0 dB
12.0 dB
15.6 dB
18.0 dB
Mode
Application information
Gv (nominal)
Table
7. The gain
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