TDA7498 Datasheet, PDF (9/28 Pages) STMicroelectronics – 100-watt + 100-watt dual BTL class-D audio amplifier

TDA7498
Electrical specifications
Table 6.
Symbol
Electrical specifications (continued)
Parameter
Condition
Min Typ Max Unit
T_j
R_i
V_OVP
V_UVP
R_dsON
P_o
P_o
P_D
η
THD
G_V
ΔG_V
C_T
eN
SVRR
T_r, T_f
f_SW
f_SWR
V_inH
V_inL
Junction temperature at thermal
shutdown
-
-
150 -
°C
Input resistance
Differential input
48 60 -
kΩ
Overvoltage protection threshold -
42 43 -
V
Undervoltage protection
threshold
-
-
-
8
V
Power transistor on resistance
High side
Low side
-
0.2 -
Ω
-
0.2 -
Output power
THD = 10%
THD = 1%
-
100 -
W
-
78 -
Output power
Dissipated power
R_L = 8 Ω, THD = 10% -
80 -
W
P_o = 100 W + 100 W,
THD = 10%
-
20 -
W
Efficiency
Total harmonic distortion
P_o = 100 W + 100 W
P_o = 1 W
GAIN0 = L, GAIN1 = L
-
90 -
%
-
0.1 -
%
24.6 25.6 26.6
Closed-loop gain
GAIN0 = L, GAIN1 = H
GAIN0 = H, GAIN1 = L
30.6 31.6 32.6
dB
34.1 35.1 36.1
GAIN0 = H, GAIN1 = H 36.6 37.6 38.6
Gain matching
-
-1 -
1
dB
Crosstalk
Total input noise
f = 1 kHz, P_o = 1 W
A Curve, G_V = 20 dB
f = 22 Hz to 22 kHz
50 70 -
dB
-
15 -
µV
-
25 50
Supply voltage rejection ratio
fr = 100 Hz, Vr = 0.5 Vpp,
C_SVR = 10 µF
-
70 -
dB
Rise and fall times
-
-
50 -
ns
Switching frequency
Output switching frequency
range
Internal oscillator
290 310 330 kHz
With internal oscillator ⁽¹⁾ 250 -
With external oscillator ⁽²⁾ 250 -
400
kHz
400
Digital input high (H)
-
Digital input low (L)
2.3 -
-
-
-
V
0.8
Doc ID 16107 Rev 8
9/28