TDF8599B datasheet(32/54 Pages) NXP

32 / 54 page

TDF8599B_1

Product data sheet

Rev. 01 — 29 July 2009

32 of 54

NXP Semiconductors

TDF8599B

I2C-bus controlled dual channel class-D power ampliﬁer

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 TDF8599B and the inductor to the measurement point. LC ﬁlter dimensioning is

L=10

µH, C = 1 µF for 4 Ω load and L = 5 µH, C = 2.2 µF for 2 Ω load.

[2]

Output power is measured indirectly based on RDSon measurement.

Table 21.

Dynamic characteristics

VP =VDDA = 14.4 V; RL =4 Ω; fi = 1 kHz; fosc = 320 kHz; Rs(L) < 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:

[2]

VP = 14.4 V; THD = 1 %; RL =4 Ω

VP = 14.4 V; THD = 10 %; RL =4 Ω

square wave (EIAJ); RL =4 Ω

-40

VP = 24 V; THD = 10 %; RL =4 Ω

-70

VP = 14.4 V; THD = 1 %; RL =2 Ω

VP = 14.4 V; THD = 10 %; RL =2 Ω

square wave (EIAJ); RL =2 Ω

-70

Parallel mode:

[2]

VP = 14.4 V; THD = 10 %; RL =1 Ω

-85

VP = 24 V; THD = 10 %; RL =2 Ω

138

VP = 24 V; THD = 1 %; RL =1 Ω

135

150

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] 60

fripple = 1 kHz

[4] 60

Mute mode

fripple = 1 kHz

[4] 60

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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