Datasheet

Electrical specifications TDA7493
10/30 Doc ID 14570 Rev 6
Pd Dissipated power
Po = 2.8 W + 2.8 W,
THD = 10%
-1.1-W
η Efficiency
Po = 2.8 W + 2.8 W,
R
L
=4Ω
-83-%
THD
Total harmonic
distortion
R
L
= 4 Ω, Po = 0.5 W - 0.05 - %
Tj
Thermal shut-down
junction temperature
--150-°C
G
V
Closed loop gain
GAIN0 = low
GAIN1 = low - 6.0 -
dB
GAIN1 = high - 12.0 -
GAIN0 = high
GAIN1 = low - 15.6 -
GAIN1 = high - 18.0 -
GV Gain matching - -1 - 1 dB
CT Crosstalk f = 1 kHz - 60 - dB
eN Total output noise
A curve, Gv = 18 dB - 50 - µV
f = 22 Hz to 22 kHz,
Gv = 18 dB
-60-µV
Ri Input resistance Differential Input - 60 - k
Ω
SVRR
Supply voltage
rejection ratio
f
r
= 100 Hz, Vr = 0.5 V,
C
SVR
=1µF
-55-dB
V
OVP
Overvoltage protection
threshold
--5.8-V
t
r
, t
f
Rising and falling time - - 10 - ns
R
DSON
Power transistor on
resistance
High side - 0.44 -
Ω
Low side - 0.36 -
f
SW
Switching frequency Internal oscillator - 315 - kHz
f
SWR
Output switching
frequency range
With internal oscillator
(1)
250 - 400 kHz
With external oscillator
(2)
250 - 400 kHz
I
qSTANDBY
Quiescent current in
standby
--1-µA
Function
mode
Standby and play
STANDBY = high Play
-
STANDBY = low Standby
Digital inputs Digital input thresholds
High
0.7 *
V
CC
--V
Low - -
0.3 *
V
CC
V
1. f
SW
= 10
6
/ (R
OSC
* 64 + 840)
f
SYNC
= 2 * f
SW
with R1 = 39 kΩ and f
SW
in kHz
2. f
SW
= f
SYNC
/ 2 with the frequency of external oscillator
Table 5. Electrical characteristics (continued)
Symbol Parameter Condition Min Typ Max Unit