TDA7850 Datasheet, PDF (9/18 Pages) STMicroelectronics – 4 x 50 W MOSFET quad bridge power amplifier plus HSD

TDA7850
Electrical specifications
Table 4.
Symbol
Electrical characteristics (continued)
(Refer to the test and application diagram, V_S = 14.4V; R_L = 4Ω; R_g = 600Ω; f = 1KHz;
T_amb = 25°C; unless otherwise specified).
Parameter
Test Condition
Min. Typ. Max. Unit
V_{AM in} V_S automute threshold
I_pin23 Muting pin current
HSD section
(Amp: Mute)
Att ≥ 80dB; P_Oref = 4W
(Amp: Play)
Att < 0.1dB; P_O = 0.5W
V_MUTE = 1.5V
(Sourced Current)
V_MUTE = 3.5V
6.5
7
V
7.5
8
7
12
18
μA
-5
18
μA
V_dropout Dropout voltage
I_prot Current limits
Offset detector (Pin 25)
I_O = 0.35A; V_S = 9 to 16V
0.25 0.6
V
400
800 mA
V_{M_ON Mute voltage for DC offset}
V_{M_OFF} ^{detection enabled}
V_stby = 5V
V_OFF Detected differential output offset V_stby = 5V; V_mute = 8V
V_{25_T}
Pin 25 voltage for detection =
TRUE
V_stby = 5V; V_mute = 8V
V_OFF > ±4V
V_{25_F}
Pin 25 Voltage for detection =
FALSE
V_stby = 5V; V_mute = 8V
V_OFF > ±2V
1. Saturated square wave output.
8
V
6
V
±2
±3
±4
V
0
1.5
V
12
V
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