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參數資料
| 型號： | 935261315112 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 音頻控制 |
| 英文描述： | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDSO20 |
| 封裝： | PLASTIC, SOT-163, SO-20 |
| 文件頁數： | 2/31頁 |
| 文件大小： | 292K |
| 代理商： | 935261315112 |
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1998 Jun 02
10
Philips Semiconductors
Preliminary specication
2
× 1.4 W BTL audio ampliers 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
Voat(max)
UP/DOWN pin oating high
level
3.4
V
Voat(min)
UP/DOWN pin oating 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
A
twait
auto repeat wait time
500
ms
trep
repeat time
key pressed
130
ms
Volume attenuator
Gv(l)
low gain; maximum volume
(including power amplier)
19
20
21
dB
low gain; minimum volume
(including power amplier)
tbf
60
tbf
dB
Gv(h)
high gain; maximum volume
(including power amplier)
29
30
31
dB
high gain; minimum volume
(including power amplier)
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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