Datasheet

Electrical specifications TDA7850
8/18
3.3 Electrical characteristics
Table 4. Electrical characteristics
(Refer to the test and application diagram, V
S
= 14.4 V; R
L
= 4 ; R
g
= 600 ; f = 1 kHz;
T
amb
= 25 °C; unless otherwise specified).
Symbol Parameter Test condition Min. Typ. Max. Unit
I
q1
Quiescent current R
L
=  100 180 280 mA
V
OS
Output offset voltage Play mode / Mute mode ±50 mV
dV
OS
During mute ON/OFF output
offset voltage
ITU R-ARM weighted
see Figure 20
-10 +10 mV
During Standby ON/OFF output
offset voltage
-10 +10 mV
G
v
Voltage gain 25 26 27 dB
dG
v
Channel gain unbalance ±1 dB
P
o
Output power
V
S
= 13.2 V; THD = 10 %
V
S
= 13.2 V; THD = 1 %
V
S
= 14.4 V; THD = 10 %
V
S
= 14.4 V; THD = 1 %
23
16
28
20
25
19
30
23
W
V
S
= 14.4 V; THD = 10 %, 2  50 55 W
P
o max.
Max. output power
(1)
V
S
= 14.4 V; R
L
= 4 
V
S
= 14.4 V; R
L
= 2 
50
85
W
THD Distortion
P
o
= 4W
P
o
= 15W; R
L
= 2
0.006
0.015
0.02
0.03
%
e
No
Output noise
"A" Weighted
Bw = 20 Hz to 20 kHz
35
50
50
70
V
SVR Supply voltage rejection f = 100 Hz; V
r
= 1Vrms 50 75 dB
f
ch
High cut-off frequency P
O
= 0.5 W 100 300 KHz
R
i
Input impedance 80 100 120 K
C
T
Cross talk
f = 1 kHz P
O
= 4 W
f = 10 kHz P
O
= 4 W
60 70
60
-
-
dB
I
SB
Standby current consumption
V
ST-BY
= 1.5 V 20
A
V
ST-BY
= 0 V 10
I
pin5
ST-BY pin current V
ST-BY
= 1.5 V to 3.5 V ±1 A
V
SB out
Standby out threshold voltage (Amp: ON) 2.75 V
V
SB in
Standby in threshold voltage (Amp: OFF) 1.5 V
A
M
Mute attenuation P
Oref
= 4 W 80 90 dB
V
M out
Mute out threshold voltage (Amp: Play) 3.5 V
V
M in
Mute in threshold voltage (Amp: Mute) 1.5 V
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