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TDA7491HV Datasheet(PDF) 8 Page - STMicroelectronics

Part # TDA7491HV
Description  20 W 20 W dual BTL class-D audio amplifier
PDF  50 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TDA7491HV Datasheet(HTML) 8 Page - STMicroelectronics

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4
Electrical specifications
Unless otherwise stated, the results in Table 1 below are given for the conditions: VCC = 18 V, RL (load) = 8 Ω,
ROSC = R3 = 39 kΩ, C8 = 100 nF, f = 1 kHz, GV = 20 dB and Tamb = 25 °C.
Table 5. Electrical specifications
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
VCC
Supply voltage
5
-
18
V
Iq
Total quiescent current
-
26
35
mA
IqSTBY
Quiescent current in standby
2.5
5.0
µA
VOS
Output offset voltage
Play mode
-100
+100
mV
Mute mode
-60
+60
IOCP
Overcurrent protection threshold
RL = 0 Ω
3
5
-
A
Tj
Junction temperature at thermal
shutdown
150
°C
Ri
Input resistance
Differential input
54
60
kΩ
VUVP
Undervoltage protection threshold
-
4.5
V
RDS(on)
Power transistor on resistance
High-side
0.2
Ω
Low-side
0.2
Po
Output power
THD = 10%
20
W
THD = 1%
16
Po
Output power
RL = 8 Ω, THD = 10%, VCC = 12
V
7.2
W
RL = 6 Ω, THD = 1% VCC = 25
V
4.0
PD
Dissipated power
Po =20W +20 W,
THD = 10%
4.0
W
η
Efficiency
Po = 20 W + 20W
80
90
%
THD
Total harmonic distortion
Po = 1 W
0.1
%
GV
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
ΔGV
Gain matching
-1
+1
dB
CT
Cross-talk
f = 1 kHz, Po=1 W
70
dB
eN
Total input noise
A curve, GV = 20 dB
20
µV
f = 22 Hz to 22 kHz
-
25
35
SVRR
Supply voltage rejection ratio
fr = 100 Hz, Vr = 1 Vpp, CSVR =
10 µF
50
dB
Tr, Tf
Rise and fall times
40
ns
fSW
Switching frequency
Internal oscillator, master mode
290
320
350
kHz
TDA7491HV
Electrical specifications
DS5624 - Rev 10
page 8/50



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