Symbol

Parameter

Condition

Min.

Typ.

Max.

Unit

(Continued)

RdsON

(Continued)

Power transistor on-resistance

Low side

(Contin

ued)

Ω

-

0.15

-

Po

Output power

THD = 10%

-

160

-

W

THD = 1%

-

125

-

Po

Parallel BTL (mono) output power,

RL = 3 ohm, Vcc = 36 V

THD = 10%

-

220

-

W

THD = 1%

-

170

-

η

Efficiency

-

85

-

%

THD

Total harmonic distortion

Po = 1 W

-

0.05

-

%

GV

Closed-loop gain

GAIN < 0.25*VDD

23.8

dB

0.25*VDD < GAIN < 0.5*VDD

29.8

0.5*VDD < GAIN < 0.75*VDD

33.3

GAIN > 0.75*VDD

35.8

ΔGV

Gain matching

-

-1

-

1

dB

CT

Crosstalk

f = 1 kHz, Po = 1 W

50

60

-

dB

Vn

Total output noise

Inputs shorted and to ground,

A Curve

231

µV

Inputs shorted and to ground,

f = 20 Hz to 20 kHz

400

SVRR

Supply voltage rejection ratio

fr = 100 Hz, Vr = 0.5 Vpp,

CSVR = 10 µF

-

55

-

dB

Tr, Tf

Rise and fall times

-

-

35

-

ns

fSW

Switching frequency

Internal oscillator

240

310

400

kHz

fSWR

Output switching frequency range

With internal oscillator by changing

ROSC (1)

240

-

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 < L

Mute

STBY > 2.5 V; MUTE > H

Play

AMUTE

Mute attenuation

VMUTE < L, VSTBY = H

-

75

-

dB

1. fSW = 106 / ((16 * ROSC + 182) * 4) kHz, fSYNCLK = 2 * fSW with R3 = 39 kΩ (see Figure 3. Test circuit stereo application and

mono BTL mode).

TDA7498E

Electrical specifications

DS8807 - Rev 4

page 6/17