TDA8948J datasheet(2/26 Pages) NXP

2 / 26 page

TDA8948J_1

Product data sheet

Rev. 01 — 27 February 2008

2 of 26

NXP Semiconductors

TDA8948J

4-channel audio ampliﬁer

Quick reference data

[1]

A minimum load is required at supply voltages of VCC > 22 V; RL = 3 Ω for SE and RL = 6 Ω for BTL.

[2]

The ampliﬁer can deliver output power with non-clipping output signals into nominal loads as long as the

ratings of the IC are not exceeded.

[3]

With a load connected at the outputs the quiescent current will increase.

Table 1.

Quick reference data

SE: VCC =17V; Tamb =25 °C; RL =4 Ω;fi = 1 kHz; VMODE1 =VCC;VMODE2 =VCC; measured in test

circuit Figure 11; unless otherwise speciﬁed.

BTL: VCC =17V; Tamb =25 °C; RL =8 Ω; f = 1 kHz; VMODE1 =VCC;VMODE2 =VCC; measured in test

circuit Figure 11; unless otherwise speciﬁed.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

VCC

supply voltage

operating

[1]

917

no (clipping signal)

[2]

quiescent current

VCC =17V; RL = ∞

[3]

100

145

Istb

standby current

µA

Po(SE)

SE output power

VCC = 17 V;

see Figure 7:

THD = 10 %;

RL =4 Ω

6.5

THD = 0.5 %;

RL =4 Ω

-6

-W

VCC = 20 V:

THD = 10 %;

RL =4 Ω

-12

Po(BTL)

BTL output power

VCC = 17 V;

see Figure 7:

THD = 10 %;

RL =8 Ω

THD = 0.5 %;

RL =8 Ω

-12

VCC = 20 V:

THD = 10 %;

RL =8 Ω

-24

THD

total harmonic

distortion

SE; Po = 1 W

0.1

0.5

BTL; Po = 1 W

0.05

0.5

voltage gain

BTL

SVRR

supply voltage ripple

rejection

SE:

fripple = 1 kHz

[4]

-60

fripple =

100 Hz to 20 kHz

[4]

-60

BTL:

fripple = 1 kHz

[4]

-65

fripple =

100 Hz to 20 kHz

[4]

-65

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