Datasheet

Electrical specifications TDA7498E
8/20 Doc ID 022595 Rev 1
3.4 Electrical specifications
Unless otherwise stated, the values in the table below are specified for the conditions:
V
CC
=36V, R
L
= 4 Ω, R
OSC
= R3 = 39 kΩ, C8 = 100 nF, f = 1 kHz, G
V
= 23.6 dB
Tam b = 25 °C.
Table 6. Electrical specifications
Symbol Parameter Condition Min Typ Max Unit
I
q
Total quiescent current No LC filter, no load - 60 mA
I
qSTBY
Quiescent current in standby - - 1 µA
V
OS
Output offset voltage
Vi = 0 Av = 23.6 dB,
no load
-20 - 20 mV
I
OCP
Overcurrent protection threshold R
L
= 0 Ω 10 11 14 A
T
j
Junction temperature at thermal
shutdown
- 140 150 160 °C
R
i
Input resistance Differential input 69 - kΩ
V
UVP
Undervoltage protection threshold - - - 8 V
R
dsON
Power transistor on resistance
High side - 0.15 -
Ω
Low side - 0.15 -
P
o
Output power
THD = 10% - 160 -
W
THD = 1% - 125 -
P
o
Parallel BTL (mono) output power,
R
L
= 3 ohm, Vcc = 36 V
THD = 10% - 220 -
W
THD = 1% - 170 -
η Efficiency - 85 - %
THD Total harmonic distortion P
o
= 1 W - 0.05 - %
G
V
Closed-loop gain
GAIN0 < 0.25*VDD 23.8
dB
0.25*VDD < GAIN < 0.5*VDD 29.8
0.5*VDD < GAIN < 0.75*VDD 33.3
GAIN > 0.75*VDD 35.8
ΔG
V
Gain matching - -1 - 1 dB
C
T
Crosstalk f = 1 kHz, P
o
= 1 W 50 60 - dB
Vn Total output noise
Inputs shorted and to Ground A
curve
231 µV
Inputs shorted and to Ground
f = 20 Hz to 20 kHz
400 µV
SVRR Supply voltage rejection ratio
fr = 100 Hz, Vr = 0.5 Vpp,
C
SVR
= 10 µF
-55-dB
T
r
, T
f
Rise and fall times - - 35 - ns
f
SW
Switching frequency Internal oscillator 240 310 400 kHz
f
SWR
Output switching frequency range
With internal oscillator by changing
Rosc
(1)
240 - kHz