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TDA8552T_02 Datasheet, PDF (10/27 Pages) NXP Semiconductors – 2 x 1.4 W BTL audio amplifiers with digital volume control and headphone sensing | |||
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NXP Semiconductors
2 x 1.4 W BTL audio amplifiers with digital
volume control and headphone sensing
Product specification
TDA8552T; TDA8552TS
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX. UNIT
Volume control
tW
pulse width
50
trep
pulse repetition time
100
Vth(up)
UP/DOWN pin UP threshold
4.1
level
Vfloat(max)
UP/DOWN pin floating high
â
level
Vfloat(min)
UP/DOWN pin floating low
1.0
level
Vth(down)
UP/DOWN pin DOWN
0
threshold level
II(up/down)
twait
trep
input current UP/DOWN pin 0 < VUP/DOWN < VDD
â
auto repeat wait time
â
repeat time
key pressed
â
Volume attenuator
Gv(l)
low gain; maximum volume
19
(including power amplifier)
low gain; minimum volume
tbf
(including power amplifier)
Gv(h)
high gain; maximum volume
29
(including power amplifier)
high gain; minimum volume
tbf
(including power amplifier)
Nstep
number of gain steps
â
ÎGv
variation of gain per step
â
Zi
input impedance
14
Vi(max)(rms)
maximum input voltage
â
(RMS value)
â
â
ns
â
â
ns
â
VDD
V
â
3.4
V
â
â
V
â
0.6
V
â
200
μA
500
â
ms
130
â
ms
20
21
dB
â60
tbf
dB
30
31
dB
â50
tbf
dB
64
â
1.25
â
dB
20
â
kΩ
â
1.75
V
Notes
1. With a load connected at the outputs the quiescent current will increase, the maximum of this increase being equal
to
2
Ã
â
â
D-----C------o---u----t-p----u---t---Ro----f-Lf--s---e---t----v---o---l-t--a---g----e-â â
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).
2002 Jan 04
10
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