TDA8947J Datasheet, PDF (11/24 Pages) NXP Semiconductors – 4-channel audio amplifier (SE: 1 W to 25 W; BTL: 4 W to 50 W)

Philips Semiconductors
TDA8947J
4-channel audio amplifier
10⁷
V_o
(µV)
10⁶
coc005
10⁵
10⁴
10³
10²
10
1
0
4
8
12
16
20
V_MODE1 (V)
BTL; V_CC = 18 V; V_i = 50 mV.
Fig 4. AC output voltage as function of voltage on pin MODE1.
MCE485
MCE484
60
60
Po
Po
(W)
(W)
4Ω 6Ω
40
40
8Ω
20
RL = 1 Ω
2Ω
3Ω
4Ω
8Ω
20 ^{RL = 2 Ω}
0
8
12
16
20
24
28
VCC (V)
0
8
12
16
THD = 10 %; one channel.
THD = 10 %; one channel.
a. SE
b. BTL
Fig 5. Output power as function of supply voltage at various loads
16 Ω
20
24
28
VCC (V)
9397 750 10779
Preliminary data
Rev. 01 — 06 February 2004
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
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