Datasheet

TDA7498L Electrical specifications
Doc ID 16504 Rev 3 9/27
3.4 Electrical specifications
Unless otherwise stated, the results in Ta bl e 6 below are given for the conditions:
V
CC
=32V, R
L
(load) = 6 Ω, R
OSC
= R3 = 39 kΩ, C8 = 100 nF, f = 1 kHz, G
V
= 25.6 dB and
Tamb = 2 5 ° C.
Table 6. Electrical specifications
Symbol Parameter Condition Min Typ Max Unit
I
q
Total quiescent current No LC filter, no load - 40 60 mA
I
qSTBY
Quiescent current in standby - - 1 10 µA
V
OS
Output offset voltage
Play mode -100 - 100
mV
Mute mode -60 - 60
I
OCP
Overcurrent protection threshold R
L
= 0 Ω 5.0 6.0 - A
T
jS
Junction temperature at thermal
shutdown
- - 150 - °C
R
i
Input resistance Differential input 48 60 - kΩ
V
OVP
Overvoltage protection threshold - 42 43 - V
V
UVP
Undervoltage protection
threshold
- --8V
R
dsON
Power transistor on resistance
High side - 0.2 -
Ω
Low side - 0.2 -
P
o
Output power
THD = 10% - 80 -
W
THD = 1% - 65 -
P
o
Output power
R
L
= 8 Ω, THD = 10%,
V
CC
= 32V
-65-W
P
D
Dissipated power
P
o
= 80 W + 80 W,
THD = 10%
-16-W
η Efficiency P
o
= 80 W + 80W - 90 - %
THD Total harmonic distortion P
o
= 1 W - 0.1 - %
G
V
Closed-loop gain
GAIN0 = L, GAIN1 = L 24.6 25.6 26.6
dB
GAIN0 = L, GAIN1 = H 30.6 31.6 32.6
GAIN0 = H, GAIN1 = L 34.1 35.1 36.1
GAIN0 = H, GAIN1 = H 36.6 37.6 38.6
ΔG
V
Gain matching - -1 - 1 dB
CT Crosstalk f = 1 kHz, P
o
= 1 W 5070- dB
eN Total input noise
A Curve, G
V
= 20 dB - 15 -
µV
f = 22 Hz to 22 kHz - 25 50
SVRR Supply voltage rejection ratio
fr = 100 Hz, Vr = 0.5 Vpp,
C
SVR
= 10 µF
-70-dB
T
r
, T
f
Rise and fall times - - 50 - ns