TDA8920B Datasheet, PDF(15/34 Page) NXP Semiconductors – 2 X 100 W class-D power amplifier

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TDA8920B Datasheet, PDF (15/34 Pages) NXP Semiconductors – 2 X 100 W class-D power amplifier

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Philips Semiconductors

TDA8920B

2 Ã 100 W class-D power ampliï¬er

12.3 Mono BTL application

Table 10: Mono BTL application characteristics

VP = Â±27 V; RL = 8 â¦; fi = 1 kHz; fosc = 317 kHz; RsL < 0.1 â¦ [1]; Tamb = 25 Â°C; unless otherwise speciï¬ed.

Symbol Parameter

Conditions

Min Typ

output power

RL = 6 â¦; VP = Â±27 V

THD = 0.5 %

[2]

174

THD = 10 %

210

RL = 8 â¦; VP = Â±27 V

THD = 0.5 %

[2]

138

THD = 10 %

173

THD

total harmonic distortion

Gv(cl)

SVRR

closed loop voltage gain

supply voltage ripple rejection

Po = 1 W

fi = 1 kHz

fi = 6 kHz

operating

[3]

[4]

0.02

0.03

ï£´Ziï£´

Vn(o)

input impedance

noise output voltage

fi = 100 Hz

fi = 1 kHz

mute; fi = 100 Hz

standby; fi = 100 Hz

operating

Rs = 0 â¦

mute

[4] -

[5] -

300

[6] -

220

Vo(mute)

CMRR

output signal in mute

common mode rejection ratio

Vi(CM) = 1 V (RMS)

[7] -

200

Max

0.05

Unit

kâ¦

ÂµV

[1] RsL is the series resistance of inductor of low-pass LC ï¬lter 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 ï¬lter. Maximum limit is

guaranteed but may not be 100 % tested.

[4] Vripple = Vripple(max) = 2 V (p-p); Rs = 0 â¦.

[5] B = 22 Hz to 20 kHz, using an AES17 20 kHz brickwall ï¬lter.

[6] B = 22 Hz to 20 kHz, using an AES17 20 kHz brickwall ï¬lter; independent of Rs.

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

13. Application information

13.1 BTL application

When using the power ampliï¬er in a mono BTL application the inputs of both channels

must be connected in parallel and the phase of one of the inputs must be inverted (see

Figure 6). In principle the loudspeaker can be connected between the outputs of the two

single-ended demodulation ï¬lters.

9397 750 13356

Preliminary data sheet

Rev. 01 â 1 October 2004

15 of 34

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