5

Electrical characteristics

Refer to the test circuit VS = ± 35 V, RL = 8 Ω, GV = 30 dB; Rg = 50 Ω; Tamb = 25 °C, f = 1 kHz; unless otherwise

specified.

Table 3. Electrical characteristics

Symbol

Parameter

Test condition

Min.

Typ.

Max.

Unit

VS

Supply range

10

40

V

Iq

Quiescent current

20

30

65

mA

Ib

Input bias current

500

nA

VOS

Input offset voltage

±10

mV

IOS

Input offset current

±100

nA

PO

RMS continuous output power

d = 0.5%:

VS = ± 35 V, RL = 8 Ω

VS= ± 31 V, RL = 6 Ω

VS = ± 27 V, RL = 4 Ω

60

60

60

70

70

70

W

W

W

Music Power (RMS)

IEC268.3 RULES - ∆t = 1 s (1)

d = 10%

RL = 8 Ω; VS = ± 38 V

RL = 6 ; VS = ± 33 V

RL = 4 Ω; VS = ± 29 V (2)

100

100

100

W

W

W

d

Total harmonic distortion (3)

PO = 5 W; f = 1 kHz

PO = 0.1 to 50 W; f = 20 Hz to 20 kHz

0.005

0.1

%

%

VS = ± 27 V, RL = 4 Ω

PO = 5 W; f = 1 kHz

PO = 0.1 to 50 W; f = 20 Hz to 20 kHz

0.01

0.1

%

%

SR

Slew rate

7

10

V/μs

GV

Open loop voltage gain

80

dB

Closed loop voltage gain

24

30

40

dB

eN

Total input noise

A = curve

f = 20 Hz to 20 kHz

1

2

5

μV

fL, fH

Frequency response (-3 dB)

PO = 1 W

20 Hz to 20 kHz

Ri

Input resistance

100

kΩ

SVR

Supply voltage rejection

f = 100 Hz; Vripple = 0.5 Vrms

60

75

dB

TS

Thermal shutdown

145

°C

Stand-by function (Ref: -VS or GND)

VST on

Stand-by on threshold

1.5

V

VST off

Stand-by off threshold

3.5

V

ATTst-by

Stand-by attenuation

70

90

dB

Iq st-by

Quiescent current @ Stand-by

1

3

mA

Mute function (Ref: -VS or GND)

TDA7294

Electrical characteristics

DS0013 - Rev 8

page 6/31