TDF8599TH datasheet(32/52 Pages) NXP

32 / 52 page

TDF8599_1

Product data sheet

Rev. 01 — 13 November 2008

32 of 52

NXP Semiconductors

TDF8599

Class-D power ampliﬁer with load diagnostics

13. Dynamic characteristics

[1]

RS(L) is the sum of the inductor series resistance from the low-pass LC ﬁlter in the application together with all resistance from PCB

traces or wiring between the output pin of the TDF8599 and the inductor to the measurement point. LC ﬁlter dimensioning is L = 10

µH,

C=1

µF is used and for 2 Ω load L = 5 µH, C = 2.2 µF for 4 Ω load.

[2]

Output power is measured indirectly based on RDSon measurement.

[3]

Total harmonic distortion is measured at the bandwidth of 22 Hz to 20 kHz, AES brick wall. The maximum limit is guaranteed but may

not be 100 % tested.

[4]

Vripple =Vripple(max) = 1 V RMS; Rs =0 Ω.

Table 21.

Dynamic characteristics

Vp = 14.4 V; RL =4 Ω; fi = 1 kHz; fosc = 320 kHz; RsL < 0.04 Ω[1]; −40 °C < Tamb < +85 °C; Stereo mode; unless otherwise

speciﬁed.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

output power

Stereo mode;

THD = 1 %; RL =4 Ω

[2] 18

THD = 10 %; RL =4 Ω

square wave (EIAJ); RL =4 Ω

-40

THD = 1 %; RL =2 Ω

THD = 10 %; RL =2 Ω

square wave (EIAJ); RL =2 Ω

-70

Parallel mode

THD = 10 %; RL =1 Ω

[2] -85

THD

total harmonic distortion

fi = 1 kHz; Po =1 W

[3] -

0.02

0.1

fi = 10 kHz; Po =1 W

[3] -

0.02

0.1

Gv(cl)

closed-loop voltage gain

αcs

channel separation

fi = 1 kHz; Po = 1 W

SVRR

supply voltage rejection ratio

Operating mode

fripple = 100 Hz

[4] -70

fripple = 1 kHz

[4] -70

Mute mode

fripple = 1 kHz

[4] -70

off state and Standby mode

fripple = 1 kHz

[4] -90

|Zi(dif)|

differential input impedance

100

150

Ω

Vn(o)

output noise voltage

Operating mode

BD mode

[5] -60

µV

AD mode

[5] -

100

140

µV

Mute mode

BD mode

[6] -25

µV

AD mode

[6] -

110

µV

αbal(ch)

channel balance

αmute

mute attenuation

[7] 66

CMRR

common mode rejection ratio

Vi(CM) = 1 V RMS

ηpo

output power efﬁciency

Po = 20 W

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