TDA7570 Datasheet, PDF (8/17 Pages) STMicroelectronics – 250W PWM high efficiency power audio amplifier

Electrical specifications
TDA7570
Table 5.
Electrical characteristics (continued)
(V_S = ±25V, R_L = 4Ω, f = 100Hz, T_j = 25°C, Gain = 28dB, application circuit shown in
Figure 3, 2x65/1x130W system, unless otherwise specified.)
Symbol
Parameter
Test condition
Min. Typ. Max. Unit
P_dt
Power dissipation of the external @ P_out = 25W, bridge
power transistors (total)
configuration
10
W
THD Total harmonic distortion
G Gain
@ P_out = 10 W, single ended
@ P_out = 40 W, bridge
single-ended
0.1
%
0.03 0.1
%
27
28
29
dB
G Gain
Bridge
33
34
35
dB
E_n Output noise Single_Ended
E Output noise bridge
"A" weighted
"A" weighted
200
μV
150
μV
ΔG_e
Delta gain error between
channels
f = 1kHz, after output filter of TBD
order, 20kHz butterworth
0.5
dB
R_i
R_i
V_gspth
Input resistance
Input resistance
Threshold voltage of the
Pchannel V_gs sensor
(VSpx1 - VGpxs)
Single-ended
Bridge
7
10
13
KΩ
3.5
5
6.5 KΩ
2.5
3
3.5
V
V_gsnth
Threshold voltage of the
Pchannel V_gs sensor
(VGnxs - VSnx1)
2.5
3
3.5
V
c_t
A_m
SVR
F_SW
V_il
V_ih
Crosstalk
Mute attenuation
Supply voltage rejection
Switching frequency
Logic inputs low level voltage
Logic inputs high level voltage
f = 1kHz, V_o = 2Vrms
V_o = 2Vrms
f = 100Hz, V_r = 0.5V
50
60
dB
70
80
dB
50
60
dB
250 310 360 KHz
1.5
V
2.3
V
CLIP DETECTOR
Vcd
Clip detector pin max operating
voltage (open drain)
CDl Clip detector pin leakage current CD off
CDs
Clip detector pin saturation
voltage
CD on, 1mA
5.5
V
1
μA
1
V
CDsel1=0, CDsel2=0
(near clipping detection)
CDi Clip detector THD intervention ^{CDsel1=0, CDsel2=1}
CDsel1=1, CDsel2=0
CDsel1=1, CDsel2=1
0.5
%
1
%
5
%
8
%
8/17