TDA7571 datasheet(8/21 Pages) STMICROELECTRONICS

8 / 21 page

Electrical specifications

TDA7571

8/21

Pdt

Power dissipation of the external

power transistors

@ Pout = 25W, bridge

configuration, 1x250W system

THD

Total harmonic distortion

@ Pout = 10 W, single ended

0.1

@ Pout = 40 W, bridge

0.05

Vohs

Half scale output voltage

single-ended, output voltage

@ IN

= −6dBFS

Vrms

Output noise @ IN = -999dBFS

"A" weighted, single-ended

“A” weighted, bridge

180

100

µV

Dynamic range

“A” weighted, -60dBFS, Single-

ended PLL option circuit

“A” weighted, -60dBFS, Bridge

free running oscillation option

S/N

Signal-to-noise ratio (noise floor)

"A" weighted, single-ended

“A” weighted, bridge

100

110

Gain error

f = 1kHz

1.5

ΔG

Delta gain error between

channels

f = 1kHz

0.2

Crosstalk

f = 1kHz, Vo = 1Vrms

Vgspth

Threshold voltage of the

Pchannel Vgs sensor

(VSpx1 - VGpxs)

2.533.5

Vgsnth

Threshold voltage of the

Pchannel Vgs sensor

(VSnxs - VSnx1)

2.533.5

Mute attenuation

Vo = 1Vrms

SVR

Supply voltage rejection

f = 100Hz, Vr = 0.5V

FSW

Switching frequency

FS x 8

KHz

Vil

3.3V Logic inputs low level

voltage

pin: ST-BY, MUTE, SD, WS,

SCK, MCLK bridge

1.5

Vih

3.3V Logic inputs high level

voltage

2.3

Vil

5V Logic inputs low level voltage

pin: L/R, CD SEL1, CD SEL2, P/O,

D1, D2. (these pins are typically

connected to the DGND or 5V

dig pins)

1.5

Vih

5V Logic inputs high level voltage

3.5

Table 5.

Electrical characteristics (continued)

(VS = ±25V, RL = 4Ω, f = 1kHz, Tj = 25°C, FS = 44.1kHz, Single-Ended, application circuit shown

in Figure 3, 2 x 65W/1 x 130W system, unless otherwise specified.)

Symbol

Parameter

Test condition

Min.

Typ.

Max.

Unit

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