Electrical specifications

TDA7850

8/18

3.3

Electrical characteristics

Table 4.

Electrical characteristics

(Refer to the test and application diagram, VS = 14.4 V; RL = 4 ; Rg = 600 ; f = 1 kHz;

Tamb = 25 °C; unless otherwise specified).

Symbol

Parameter

Test condition

Min.

Typ.

Max.

Unit

Iq1

Quiescent current

RL = 

100

180

280

mA

VOS

Output offset voltage

Play mode / Mute mode

±50

mV

dVOS

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

Gv

Voltage gain

25

26

27

dB

dGv

Channel gain unbalance

±1

dB

Po

Output power

VS = 13.2 V; THD = 10 %

VS = 13.2 V; THD = 1 %

VS = 14.4 V; THD = 10 %

VS = 14.4 V; THD = 1 %

23

16

28

20

25

19

30

23

W

VS = 14.4 V; THD = 10 %, 2 

50

55

W

Po max.

Max. output power(1)

VS = 14.4 V; RL = 4 

VS = 14.4 V; RL = 2 

50

85

W

THD

Distortion

Po = 4W

Po = 15W; RL = 2

0.006

0.015

0.02

0.03

%

eNo

Output noise

"A" Weighted

Bw = 20 Hz to 20 kHz

35

50

50

70

V

SVR

Supply voltage rejection

f = 100 Hz; Vr = 1Vrms

50

75

dB

fch

High cut-off frequency

PO = 0.5 W

100

300

KHz

Ri

Input impedance

80

100

120

K



CT

Cross talk

f = 1 kHz PO = 4 W

f = 10 kHz PO = 4 W

60

70

60

-

-

dB

ISB

Standby current consumption

VST-BY = 1.5 V

20

A

VST-BY = 0 V

10

Ipin5

ST-BY pin current

VST-BY = 1.5 V to 3.5 V

±1

A

VSB out

Standby out threshold voltage

(Amp: ON)

2.75

V

VSB in

Standby in threshold voltage

(Amp: OFF)

1.5

V

AM

Mute attenuation

POref = 4 W

80

90

dB

VM out

Mute out threshold voltage

(Amp: Play)

3.5

V

VM in

Mute in threshold voltage

(Amp: Mute)

1.5

V