3.3

Electrical specifications

Unless otherwise stated, the results in Table 1 below are given for the conditions: VCC = 22 V, RL= 6 Ω, ROSC =

R3 = 33 kΩ, f = 1 kHz, GV = 20.8 dB and Tamb = 25 °C.

Table 4. Electrical specifications

Symbol

Parameter

Condition

Min.

Typ.

Max.

Unit

VCC

Supply voltage for pins PVCCA,

PVCCB, SVCC

-

7

-

26

V

Iq

Total quiescent current

No LC filter, no load

-

40

mA

IqSTBY

Quiescent current in standby

-

-

1

-

µA

VOS

Output offset voltage

Vi = 0, no load

20

mV

IOCP

Overcurrent protection threshold

to switch off the device

9

10

13

A

Tj

Junction temperature at thermal

shutdown

-

140

150

160

°C

Ri

Input resistance

Differential input

60

-

kΩ

RdsON

Power transistor on-resistance

High side

-

0.2

-

Ω

Low side

-

0.2

-

GV

Closed-loop gain

GAIN < 0.25*Vdd

20.8

-

dB

0.25*Vdd < GAIN < 0.5*Vdd

-

26.8

-

0.5*Vdd < GAIN < 0.75*Vdd

-

30

-

GAIN1 > 0.75*Vdd

-

32.8

-

ΔGV

Gain matching

-

-

±1

dB

CT

Cross talk

f = 1 kHz, PO = 1 W

70

-

dB

SVRR

Supply voltage rejection ratio

fr = 100 Hz, Vr = 0.5 Vpp,

CSVR = 10 µF

-

60

-

dB

Tr, Tf

Rise and fall times

-

-

24

40

ns

fSW

Switching frequency

Internal oscillator

500

kHz

fSWR

Output switching frequency

range

With internal oscillator by changing

Rosc(1)

450

-

550

kHz

VinH

Digital input high (H)

-

2.0

-

-

V

VinL

Digital input low (L)

-

-

0.8

Function

mode

Standby, Mute, Play

STBY < 0.5 V Mute = X

Standby

STBY > 2.5 V Mute < 0.8 V

Mute

STBY > 2.5 V Mute > 2.5 V

Play

AMUTE

Mute attenuation

VMUTE = 1 V

60

80

-

dB

1. fSW = 106 / [( ROSC * 12 + 110) * 4] kHz, fSYNCLK = 2 * fSW (where ROSC is in kΩ. and fSW in kHz) with Rosc = 33 kΩ.

TDA7492PE

Electrical specifications

DS10652 - Rev 3

page 6/19