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TDA8946AJ 데이터시트(PDF) 1 Page - NXP Semiconductors

부품명 TDA8946AJ
상세설명  2 x 15 W BTL audio amplifier with DC gain control
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제조업체  NXP [NXP Semiconductors]
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TDA8946AJ
2 x 15 W BTL audio amplifier with DC gain control
Rev. 01 — 01 March 2002
Product data
M3D541
1.
General description
The TDA8946AJ is a dual-channel audio power amplifier with DC gain control. It has
an output power of 2
× 15 W at an 8 Ω load and an 18 V supply. The circuit contains
two Bridge-Tied Load (BTL) amplifiers with an all-NPN output stage and
standby/mute logic. The overall gain can be adjusted from +30 dB down to
−50 dB
using a DC control voltage. This feature can be used for volume control or for a preset
gain. The TDA8946AJ comes in a 17-pin DIL-bent-SIL (DBS) power package and is
pin compatible with the TDA8946J.
2.
Features
s Gain/volume adjustment via a DC control pin
s Soft clipping
s Operating at a low supply voltage
s Standby and mute mode
s No on/off switching plops
s Low standby current
s High supply voltage ripple rejection
s Outputs short-circuit protected to ground, supply and across the load
s Thermally protected
s Printed-circuit board compatible with TDA8944AJ and TDA8580J.
3.
Applications
s Mains fed applications (e.g. TV sound)
s PC audio
s Portable audio.
4.
Quick reference data
Table 1:
Quick reference data
Symbol Parameter
Conditions
Min
Typ
Max
Unit
VCC
supply voltage
4.5
18
18
V
Iq
quiescent supply current
VCC =18V; RL = ∞
-45
55
mA
Istb
standby supply current
-
-
10
µA
Po
output power
THD = 10%; RL =8 Ω;
VCC =18V
13
15
-
W
THD
total harmonic distortion
Po =1W
-
0.07
0.5
%


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