TDA8950 datasheet(16/39 Pages) NXP

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TDA8950_1

Preliminary data sheet

Rev. 01 — 9 September 2008

16 of 39

NXP Semiconductors

TDA8950

× 150 W class-D power ampliﬁer

12.3 Mono BTL application characteristics

[1]

RsL is the series resistance of inductor of low-pass LC ﬁlter in the application.

[2]

Output power is measured indirectly; based on RDSon measurement. See also Section 13.3.

[3]

Total harmonic distortion is measured in a bandwidth of 22 Hz to 20 kHz, using an AES17 20 kHz brickwall

ﬁlter. Maximum limit is guaranteed but may not be 100 % tested.

[4]

Vripple = Vripple(max) = 2 V (p-p); Rs = 0 Ω.

[5]

B = 22 Hz to 20 kHz, using an AES17 20 kHz brickwall ﬁlter. Low noise due to BD modulation.

[6]

B = 22 Hz to 20 kHz, using an AES17 20 kHz brickwall ﬁlter; independent of Rs.

[7]

Vi = Vi(max) = 1 V (RMS); fi = 1 kHz.

Table 10.

Dynamic characteristics

VP = ±35 V; RL = 8 Ω; fi = 1 kHz; fosc = 345 kHz; RsL < 0.1 Ω [1]; Tamb = 25 °C; unless otherwise

speciﬁed.

Symbol Parameter

Conditions

Min

Typ

Max

Unit

output power

L = 22

µH; C = 680 nF;

Tj =85 °C; RL =8 Ω

[2]

THD = 10 %; VP = ±39 V

340

THD = 10 %; VP = ±37 V

300

THD = 0.5 %; VP = ±37 V

200

THD

total harmonic

distortion

Po = 1 W; fi = 1 kHz

[3] -

0.05

Po = 1 W; fi = 6 kHz

[3] -

0.05

Gv(cl)

closed-loop voltage

gain

-36

SVRR

supply voltage ripple

rejection

between pin VDDPn and

SGND

operating; fi = 100 Hz

[4] -80

operating; fi = 1 kHz

[4] -80

mute; fi = 100 Hz

[4] -95

standby; fi = 100 Hz

[4] -

120

between pin VSSPn and

SGND

operating; fi = 100 Hz

[4] -75

operating; fi = 1 kHz

[4] -75

mute; fi = 100 Hz

[4] -90

standby; fi = 100 Hz

[4] -

130

input impedance

measured between the input

pins and SGND

Ω

Vn(o)

output noise voltage

operating; Rs =0 Ω

[5] -

190

µV

mute

[6] -45

µV

αmute

mute attenuation

fi = 1 kHz; Vi = 2 V (RMS)

[7] -82

CMRR

common mode

rejection ratio

Vi(CM) = 1 V (RMS)

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