5.1 Stereo and mono BTL operation selection using the MODE
pin
The TDA7498E can be used in stereo applications or mono BTL applications. Connecting
the MODE pin to the VDDS pin configures the device in mono BTL. The output of the two
channels can be paralleled. When the MODE pin is connected to ground or floating (pulled
down internally) the device works as a stereo amplifier.
5.2 Gain setting
The gain of the TDA7498E is set by GAIN (pin 30).
Table 7.Gain settings
GAIN0Total GainApplication suggestion
VGAIN < 0.25*VDDS23.6 dBGAIN pin connected to SGND
0.25*VDDS < VGAIN < 0.5*VDDS29.6 dBRc10 = Rc11= Rc12 = 100 K max
VGAIN > 0.75*VDDS35.6 dBGAIN pin connected to VDDS
5.3 Smart protection
To avoid dynamic impedance drop, two overcurrent thresholds are set. The first threshold is
for the overcurrent limit. The device limits the output current to the first threshold but does
not shut down the PWM outputs.
If the device is shorted and at least one of the two output currents reaches the second
threshold, the device is shut down immediately. The device will recover automatically when
the fault is removed from the BTL outputs.
16/20Doc ID 022595 Rev 1
TDA7498EPackage mechanical data
6 Package mechanical data
In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK
specifications, grade definitions and product status are available at: www.st.com.
ECOPACK
®
packages, depending on their level of environmental compliance. ECOPACK®
®
is an ST trademark.
The TDA7498E comes in a 36-pin PowerSSO package with exposed pad up.
Figure 12 shows the package outline and Tab le 8 gives the dimensions.
Table 8.PowerSSO36 EPU dimensions
Dimensions in mmDimensions in inches
Symbol
MinTypMaxMinTypMax
A2.15-2.450.085-0.096
A22.15-2.350.085-0.093
a10-0.100-0.004
b0.18-0.360.007-0.014
c0.23-0.320.009-0.013
D10.10-10.500.398-0.413
E7.40-7.600.291-0.299
e-0.5--0.020-
e3-8.5--0.335-
F-2.3--0.091-
G--0.10 --0.004
H10.10-10.500.398-0.413
h--0.40 --0.016
k0-8 degrees--8 degrees
L0.60-1.000.024-0.039
M-4.30--0.169-
N--10 degrees--10 degrees
O-1.20--0.047-
Q-0.80--0.031-
S-2.90--0.114-
T-3.65--0.144-
U-1.00--0.039-
X4.10-4.700.161-0.185
Y4.90-7.100.193-0.280
Doc ID 022595 Rev 117/20
Doc ID 022595 Rev 118/20
Figure 12. PowerSSO36 EPU outline drawing
TDA7498EPackage mechanical data
h x 45°
TDA7498ERevision history
7 Revision history
Table 9.Document revision history
DateRevisionChanges
12-Dec-20111Initial release.
Doc ID 022595 Rev 119/20
TDA7498E
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