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參數(shù)資料
| 型號： | TDA8547T-T |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 1.2 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO16 |
| 文件頁數(shù)： | 20/24頁 |
| 文件大小： | 182K |
| 代理商： | TDA8547T-T |
1997 Oct 07
5
Philips Semiconductors
Preliminary specication
2
× 1 W BTL audio amplier with output
channel switching
TDA8547
operate and the power amplifier of channel 2 will be in the
standby mode. In this case only the loudspeaker at
channel 1 can operate and the loudspeaker at channel 2
will be switched off. Setting the SELECT pin to a LOW or
a HIGH voltage results in a reduction of quiescent current
consumption by a factor of approximately 2.
Switching with the SELECT pin during operating is not
plop-free, because the input capacitor of the channel
which is coming out of standby needs to be charged first.
For plop-free channel selecting the device has first to be
set in mute condition with the MODE pin (between 1.5 V
and VCC 1.5 V), then set the SELECT pin to the new
level, after a delay set the MODE pin to a LOW level.
The delay needed depends on the values of the input
capacitor and the feedback resistors. Time needed is
approx. 10
× C1 × (R1 + R2), so approximately 0.6 s. for
the values in Fig.4.
Table 1
Control pins MODE and SELECT versus status of output channels
Voltage levels at control pins at VP = 5 V; for other supply voltages see Figs. 14 and 15.
Notes
1. HIGH = Vpin >VCC 0.5 V.
2. NC = not connected or floating.
3. X = don’t care.
4. HVP = 1.5 V < Vpin <VCC 1.5 V.
5. LOW = Vpin < 0.5 V.
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134).
QUALITY SPECIFICATION
In accordance with
“SNW-FQ-611-E”. The number of the quality specification can be found in the “Quality Reference
Handbook”. The handbook can be ordered using the code 9397 750 00192.
CONTROL PIN
STATUS OF OUTPUT CHANNEL
TYP. Iq
(mA)
MODE
SELECT
CHANNEL 1
CHANNEL 2
HIGH(1)/NC(2)
X(3)
standby
0
HVP(4)
HVP(4)/NC(2)
mute
15
LOW(5)
HVP(4)/NC(2)
on
15
HVP(4)/LOW(5)
HIGH(1)
mute/on
standby
8
HVP(4)/LOW(5)
HVP(4)/NC(2)
mute/on
15
HVP(4)/LOW(5)
LOW(5)
standby
mute/on
8
SYMBOL
PARAMETER
CONDITIONS
MIN.
MAX.
UNIT
VCC
supply voltage
operating
0.3
+18
V
VI
input voltage
0.3
VCC + 0.3
V
IORM
repetitive peak output current
1A
Tstg
storage temperature
55
+150
°C
Tamb
operating ambient temperature
40
+85
°C
VPsc
AC and DC short-circuit safe voltage
10
V
Ptot
total power dissipation
SO16
1.2
W
DIP16
2.2
W
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