TDA8933T datasheet(21/47 Pages) NXP

21 / 47 page

TDA8933_1

Preliminary data sheet

Rev. 01 — 15 May 2007

21 of 47

NXP Semiconductors

TDA8933

Class-D audio ampliﬁer

13. Dynamic characteristics

Table 11.

Switching characteristics

VP = 25 V; Tamb = 25 °C; unless otherwise speciﬁed.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

Internal oscillator

fosc

oscillator frequency

Rosc = 39 kΩ

320

kHz

range

300

500

kHz

Timing PWM output: pins OUT1 and OUT2

rise time

IO = 0 A

fall time

IO = 0 A

tw(min)

minimum pulse width

IO = 0 A

Table 12.

SE characteristics

VP = 25 V, RL = 2 × 8 Ω, fi = 1 kHz, fosc = 320 kHz, RS < 0.1 Ω [6] and Tamb = 25 °C; unless otherwise speciﬁed.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

Po(RMS)

RMS output power

continuous time output power

per channel

[1]

RL = 4 Ω; VP = 17 V

THD+N = 0.5 %, fi = 1 kHz

5.9

6.5

THD+N = 0.5 %, fi = 100 Hz

6.5

THD+N = 10 %, fi = 1 kHz

7.5

8.3

THD+N = 10 %, fi = 100 Hz

8.3

RL = 8 Ω; VP = 25 V

THD+N = 0.5 %, fi = 1 kHz

7.3

8.1

THD+N = 0.5 %, fi = 100 Hz

8.1

THD+N = 10 %, fi = 1 kHz

9.3

10.3

THD+N = 10 %, fi = 100 Hz

10.3

short time output power per

channel; THD+N = 10 %,

see Figure 23 for details

[2]

RL = 8 Ω; VP = 31 V

THD+N = 0.5 %

11.2

12.4

THD+N = 10 %

14.1

15.7

THD+N

total harmonic

distortion-plus-noise

Po = 1 W

[3]

fi = 1 kHz

0.011

0.1

fi = 6 kHz

0.06

0.1

Gv(cl)

closed-loop voltage gain

Vi =100 mV; no load

∆GV|

voltage gain difference

0.5

αcs

channel separation

Po = 1 W; fi = 1 kHz

SVRR

supply voltage ripple

rejection

Operating mode

[4]

fi = 100 Hz

fi = 1 kHz

|Zi|

input impedance

differential

100

Ω

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