TDA7492P Datasheet, PDF (9/26 Pages) STMicroelectronics – 25-watt + 25-watt dual BTL class-D audio amplifier

TDA7492P
Electrical specifications
Table 5.
Symbol
Electrical specifications (continued)
Parameter
Condition
Min Typ Max Unit
V_OVP
V_UVP
Overvoltage protection threshold -
Undervoltage protection
threshold
-
28 29 -
V
-
-
7
V
R_dsON
Power transistor on resistance
High side
Low side
-
0.2 -
Ω
-
0.2 -
P_o
Output power
THD = 10%
THD = 1%
-
25 -
W
-
20 -
P_o
Output power
V_CC = 12 V, THD = 10% -
9.5 -
W
V_CC = 12 V, THD = 1% -
7.2 -
P_D
Power dissipated by device
P_o = 25 W + 25 W,
THD = 10%
-
5.0 -
W
η
THD
Efficiency
Total harmonic distortion
P_o = 10 W + 10 W
P_o = 1 W
GAIN0 = L, GAIN1 = L
80 90 -
%
-
0.1 0.4 %
20.6 21.6 22.6
G_V
Closed-loop gain
GAIN0 = L, GAIN1 = H
GAIN0 = H, GAIN1 = L
26.6 27.6 28.6
dB
30.1 31.1 32.1
GAIN0 = H, GAIN1 = H 32.6 33.6 34.6
ΔG_V
Gain matching
CT
Cross talk
-
f = 1 kHz
-
-
±1 dB
-
50 -
dB
eN
Total input noise
A Curve, G_V = 20 dB
-
20 -
µV
f = 22 Hz to 22 kHz
-
25 35
SVRR
T_r, T_f
f_SW
f_SWR
Supply voltage rejection ratio
Rise and fall times
Switching frequency
Output switching frequency
range
fr = 100 Hz, Vr = 0.5 V,
C_SVR = 10 µF
40
50
-
dB
-
-
50 -
ns
Internal oscillator
290 310 330 kHz
With internal oscillator ⁽¹⁾ 250 -
With external oscillator ⁽²⁾ 250 -
400
kHz
400
V_inH
Digital input high (H)
-
V_inL
Digital input low (L)
2.3 -
-
-
-
V
0.8
A_MUTE Mute attenuation
V_MUTE = 1 V
60 80 -
dB
1. f_SW = 10⁶ / ((16 * R_OSC + 182) * 4) kHz, f_SYNCLK = 2 * f_SW with R3 = 39 kΩ, see Figure 20.
2. f_SW = f_SYNCLK / 2 with the frequency of the external oscillator.
Doc ID 15068 Rev 5
9/26