TDA8920J View Datasheet(PDF) - Unspecified

Part Name

Description

Manufacturer

TDA8920J

2×50 W class-D power amplifier

Unspecified 

Philips Semiconductors

2 × 50 W class-D power amplifier

Preliminary specification

TDA8920

AC CHARACTERISTICS

Stereo single-ended application

VDD = ±25 V; RL = 8 Ω; fi = 1 kHz; Tamb = 25 °C; measured in Fig.5; unless otherwise specified.

SYMBOL

Po

THD

Gv(cl)

η

SVRR

Zi

Vn(o)

αcs

∆Gv

Vo

CMRR

PARAMETER

CONDITIONS

output power

THD = 0.5%

THD = 10%

total harmonic distortion

closed loop voltage gain

THD = 0.5%; Vp = ±30 V

THD = 10%; Vp = ±30 V

Po = 1 W; note 1

fi = 1 kHz

fi = 10 kHz

efficiency

supply voltage ripple

rejection

Po = tbf W; fi = 1 kHz; note 2

on; note 3

on; note 4

mute; note 3

standby; note 3

input impedance

noise output voltage

on; note 5

on; note 6

mute; note 7

channel separation

note 8

channel unbalance

output signal

mute; note 9

common mode rejection ratio Vi(CM)(rms) = 1 V

MIN.

tbf

tbf

−

−

TYP.

30

35

40

50

MAX.

−

−

−

−

UNIT

W

W

W

W

−

0.1

0.15 %

−

0.2

−

%

29

30

31

dB

85

90

−

%

−

60

−

dB

tbf

tbf

−

dB

−

60

−

dB

−

80

−

dB

80

120

kΩ

−

100

200

µV

−

tbf

−

µV

−

100

−

µV

50

tbf

−

dB

−

−

1

dB

−

−

500

µV

−

65

−

dB

Notes

1. Total harmonic distortion is measured in a bandwidth of 22 Hz to 22 kHz, using an 11th-order low-pass filter. When

distortion is measured using a lower order low-pass filter a significantly higher value will be found, due to the

switching frequency outside the audio band.

2. Output power measured across the loudspeaker load.

3. Vripple = Vripple(max) = 2 V (p-p); fi = 100 Hz; Rs = 0 Ω.

4. Vripple = Vripple(max) = 2 V (p-p); fi = 1 kHz; Rs = 0 Ω.

5. B = 22 Hz to 22 kHz; Rs = 0 Ω.

6. B = 22 Hz to 22 kHz; Rs = 10 kΩ.

7. B = 22 Hz to 22 kHz; independent of Rs.

8. Po = tbf W; Rs = 0 Ω.

9. Vi = Vi(max) = 1 V (RMS).

1998 Dec 01

8

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