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TDA8552T Datasheet(PDF) 10 Page - NXP Semiconductors

No. de pieza TDA8552T
Descripción Electrónicos  2 x 1.4 W BTL audio amplifiers with digital volume control and headphone sensing
Download  28 Pages
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Fabricante Electrónico  PHILIPS [NXP Semiconductors]
Página de inicio  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

TDA8552T Datasheet(HTML) 10 Page - NXP Semiconductors

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1998 Jun 02
10
Philips Semiconductors
Preliminary specification
2
× 1.4 W BTL audio amplifiers with digital
volume control and headphone sensing
TDA8552T; TDA8552TS
Notes
1. With a load connected at the outputs the quiescent current will increase, the maximum of this increase being equal
to
2. The DC output voltage with respect to ground is approximately 0.5VDD.
3. Output voltage in mute position is measured with an input of 1 V (RMS) in a bandwidth of 20 kHz, so including noise,
gain select pin is LOW (0 V).
Volume control
tW
pulse width
50
−−
ns
trep
pulse repetition time
100
−−
ns
Vth(up)
UP/DOWN pin UP threshold
level
4.1
VDD
V
Vfloat(max)
UP/DOWN pin floating high
level
−−
3.4
V
Vfloat(min)
UP/DOWN pin floating low
level
1.0
−−
V
Vth(down)
UP/DOWN pin DOWN
threshold level
0
0.6
V
II(up/down)
input current UP/DOWN pin
0 < VUP/DOWN <VDD
−−
200
µA
twait
auto repeat wait time
500
ms
trep
repeat time
key pressed
130
ms
Volume attenuator
Gv(l)
low gain; maximum volume
(including power amplifier)
19
20
21
dB
low gain; minimum volume
(including power amplifier)
tbf
−60
tbf
dB
Gv(h)
high gain; maximum volume
(including power amplifier)
29
30
31
dB
high gain; minimum volume
(including power amplifier)
tbf
−50
tbf
dB
Nstep
number of gain steps
64
∆G
v
variation of gain per step
1.25
dB
Zi
input impedance
14
20
k
Vi(max)(rms)
maximum input voltage
(RMS value)
−−
1.75
V
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
2
DC output offset voltage
R
L
----------------------------------------------------------------


×


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