Obsolete Product(s) - Obsolete Product(s)
5/11
TDA7490L
*: Po = measured across the load using the following inductor: COIL58120 MPPA 2 (magnectics) TURNS= 20∅ 1 mm
(1) L = 15µH, C = 470nF
(3) ∆Gv is intended with R2, R17, R5, R9 1% precision
(4) Fsw = 0.25 · (1/(300ns + R13 · (C17 + 76pF) . 0.85)
(5) V
RMAX
= (+Vcc) - (-Vcc) when V
R
≥V
RMAX
the device goes in Stand-By mode
Table 5. Electrical Characteristics
(Refer to the test circuit, V
CC
= ±19V; R
L
= 8Ω; Demod. filter L = 30µH, C = 220nF; f = 1KHz; f
sw
= 200kHz;
T
amb
= 25°C unless otherwise specified.)
Symbol Parameter Test Condition Min. Typ. Max. Unit
V
S
Supply Range ±10 ±25 V
I
q
Total Quiescent Current R
L
= ∞ no LC filter 70 120 mA
V
OS
Output Offset Voltage -150 +150 mV
P
o
Output Power THD = 10%
THD= 1%
20
16
W
W
P
o(BTL)
Output Power in Bridge
Configuration
V
S
= ±20V; R
L
= 16Ω
THD = 10%
THD=1%
40
32
W
W
V
S
=±15.5V; R
L
= 8Ω
THD = 10%
THD=1%
40
32
W
W
P
o
(1)
Output Power R
L
= 4Ω Vcc=±13.5V
THD = 10%
THD=1%
18
14.5
W
W
P
D
Maximum Dissipated Power V
CC
= ±19V; R
L
= 8Ω
Pο = 20W + 20W; THD = 10%
5.6 W
η Efficiency (') P
o
= 20W + 20W 86 %
THD Total Harmonic Distortion R
L
= 8Ω; Po = 1 W 0.1 %
I
max
Overcurrent Protection
Threshold
R
L
= 0 5 A
T
j
Thermal Shut-down Junction
Temperature
150 °C
G
v
Closed Loop Gain 29 30 31 dB
∆G
v
(3)
Gain Matching -1 +1 dB
e
N
Total Input Noise
R
G
= 50Ω
A Curve
f = 20Hz to 22KHz
7
12
µV
µV
C
T
Cross talk f = 1 KHz, P
o
= 1W 55 dB
R
i
Input Resistance 20 30 kΩ
SVR Supply Voltage Rejection f = 100Hz; V
r
= 0.5 60 dB
V
rmax
Overvoltage Threshold
(5)
55 60 V
T
r
, T
t
Rising and Falling Time 50 70 ns
R
DSON
Power Transistor on Resistance 0.4 0.8 Ω
Fsw
(4)
Switching Frequency Range 100 200 230 KHz
MUTE & STAND-BY FUNCTIONS
V
ST-BY
Stand-by range 0 0 7 V
V
MUTE
Mute Range 1.7 2.5 V
V
PLAY
Play Range 4 5 V
A
MUTE
Mute Attenuation 55 60 dB
I
qST-BY
Quiescent Current @ Stand-by 3 5 mA
