Datasheet

TDA7492P Electrical specifications
Doc ID 15068 Rev 5 9/26
V
OVP
Overvoltage protection threshold - 28 29 - V
V
UVP
Undervoltage protection
threshold
- --7V
R
dsON
Power transistor on resistance
High side - 0.2 -
Ω
Low side - 0.2 -
P
o
Output power
THD = 10% - 25 -
W
THD = 1% - 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 Efficiency P
o
= 10 W + 10 W 80 90 - %
THD Total harmonic distortion P
o
= 1 W - 0.1 0.4 %
G
V
Closed-loop gain
GAIN0 = L, GAIN1 = L 20.6 21.6 22.6
dB
GAIN0 = L, GAIN1 = H 26.6 27.6 28.6
GAIN0 = H, GAIN1 = L 30.1 31.1 32.1
GAIN0 = H, GAIN1 = H 32.6 33.6 34.6
ΔG
V
Gain matching - - - ±1 dB
CT Cross talk f = 1 kHz - 50 - dB
eN Total input noise
A Curve, G
V
= 20 dB - 20 -
µV
f = 22 Hz to 22 kHz - 25 35
SVRR Supply voltage rejection ratio
fr = 100 Hz, Vr = 0.5 V,
C
SVR
= 10 µF
40 50 - dB
T
r
, T
f
Rise and fall times - - 50 - ns
f
SW
Switching frequency Internal oscillator 290 310 330 kHz
f
SWR
Output switching frequency
range
With internal oscillator
(1)
250 - 400
kHz
With external oscillator
(2)
250 - 400
V
inH
Digital input high (H)
-
2.3 - -
V
V
inL
Digital input low (L) - - 0.8
A
MUTE
Mute attenuation V
MUTE
= 1 V 60 80 - dB
1. f
SW
= 10
6
/ ((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.
Table 5. Electrical specifications (continued)
Symbol Parameter Condition Min Typ Max Unit