TDA7493 datasheet(10/30 Pages) STMICROELECTRONICS

10 / 30 page

Electrical specifications

TDA7493

10/30

Doc ID 14570 Rev 6

Dissipated power

Po = 2.8 W + 2.8 W,

THD = 10%

-1.1

-W

Efficiency

Po = 2.8 W + 2.8 W,

RL =4 Ω

-83

THD

Total harmonic

distortion

RL = 4 Ω, Po = 0.5 W

0.05

Thermal shut-down

junction temperature

150

°C

Closed loop gain

GAIN0 = low

GAIN1 = low

6.0

GAIN1 = high -

12.0

GAIN0 = high

GAIN1 = low

15.6

GAIN1 = high -

18.0

Gain matching

-1

Crosstalk

f = 1 kHz

Total output noise

A curve, Gv = 18 dB

µV

f = 22 Hz to 22 kHz,

Gv = 18 dB

-60

µV

Input resistance

Differential Input

Ω

SVRR

Supply voltage

rejection ratio

fr = 100 Hz, Vr = 0.5 V,

CSVR =1 µF

-55

VOVP

Overvoltage protection

threshold

5.8

tr, tf

Rising and falling time

RDSON

Power transistor on

resistance

High side

0.44

Ω

Low side

0.36

fSW

Switching frequency

Internal oscillator

315

kHz

fSWR

Output switching

frequency range

With internal oscillator (1)

250

400

kHz

With external oscillator (2)

250

400

kHz

IqSTANDBY

Quiescent current in

standby

µA

Function

mode

Standby and play

STANDBY = high

Play

STANDBY = low

Standby

Digital inputs

Digital input thresholds

High

0.7 *

VCC

Low

0.3 *

VCC

fSW = 10

6 / (R

OSC * 64 + 840)

fSYNC = 2 * fSW with R1 = 39 kΩ and fSW in kHz

fSW = fSYNC / 2 with the frequency of external oscillator

Table 5.

Electrical characteristics (continued)

Symbol

Parameter

Condition

Min

Typ

Max

Unit

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