Datasheet

TDA7491HV Electrical specifications
Doc ID 14242 Rev 6 11/41
V
UVP
Undervoltage protection
threshold
- --4.5V
R
dsON
Power transistor on resistance
High side - 0.2 -
Ω
Low side - 0.2 -
P
o
Output power
THD = 10% - 20 -
W
THD = 1% - 16 -
P
o
Output power
R
L
= 8 Ω, THD = 10%
V
CC
=12V
-9.5-
W
R
L
= 8 Ω, THD = 1%
V
CC
=12V
-7.2-
P
D
Dissipated power
P
o
= 20 W + 20 W,
THD = 10%
-4.0-W
η Efficiency P
o
= 20 W + 20 W 80 90 - %
THD Total harmonic distortion P
o
= 1 W - 0.1 %
G
V
Closed loop gain
GAIN0 = L, GAIN1 = L 18 20 22
dB
GAIN0 = L, GAIN1 = H 24 26 28
GAIN0 = H, GAIN1 = L 28 30 32
GAIN0 = H, GAIN1 = H 30 32 34
ΔG
V
Gain matching - -1 - 1 dB
CT Cross talk f = 1 kHz, Po= 1W - 70 - dB
eN Total input noise
A Curve, G
V
= 20 dB - 15 -
µV
f = 22 Hz to 22 kHz - 20
SVRR Supply voltage rejection ratio
fr = 100 Hz, Vr =1Vpp,
C
SVR
= 10 µF
50 - dB
T
r
, T
f
Rise and fall times - - 40 - ns
f
SW
Switching frequency
Internal oscillator,
master mode
290 320 350 kHz
f
SWR
Switching frequency range
(1)
250 - 400 kHz
V
inH
Digital input high (H)
-
2.3 - -
V
V
inL
Digital input low (L) - - 0.8
A
MUTE
Mute attenuation
V
MUTE
= low
V
STBY
= high
80 - dB
Function
mode
Standby, mute and play modes
V
STBY
< 0.5 V
V
MUTE
= X
Standby -
V
STBY
> 2.9 V,
V
MUTE
< 0.8 V
Mute -
V
STBY
> 2.9 V,
V
MUTE
> 2.9 V
Play -
1. Refer to Section 7.4: Internal and external clocks on page 35.
Table 5. Electrical specifications (continued)
Symbol Parameter Condition Min Typ Max Unit