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參數(shù)資料
| 型號(hào)： | 8547TS |
| 廠商： | NXP Semiconductors N.V. |
| 元件分類： | 音頻放大器 |
| 英文描述： | 2 x 0.7 W BTL audio amplifier with output channel switching |
| 中文描述： | 2 × 0.7糯橋接音頻放大器的輸出開(kāi)關(guān)通道 |
| 文件頁(yè)數(shù)： | 4/20頁(yè) |
| 文件大?。?/td> | 162K |
| 代理商： | 8547TS |
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1998 Apr 01
4
Philips Semiconductors
Product specification
2
×
0.7 W BTL audio amplifier with
output channel switching
TDA8547TS
PINNING
SYMBOL PIN
DESCRIPTION
GND1
n.c.
OUT1+
1
2
3
ground, channel 1
not connected
positive loudspeaker terminal,
channel 1
operating mode select (standby, mute,
operating)
half supply voltage, decoupling ripple
rejection
input for selection of operating channel
not connected
positive loudspeaker terminal,
channel 2
not connected
ground, channel 2
supply voltage, channel 2
not connected
negative loudspeaker terminal,
channel 2
negative input, channel 2
positive input, channel 2
positive input, channel 1
negative input, channel 1
negative loudspeaker terminal,
channel 1
not connected
supply voltage, channel 1
MODE
4
SVRR
5
SELECT
n.c.
OUT2+
6
7
8
n.c.
GND2
V
CC2
n.c.
OUT2
9
10
11
12
13
IN2
IN2+
IN1+
IN1
OUT1
14
15
16
17
18
n.c.
V
CC1
19
20
Fig.2 Pin configuration.
handbook, halfpage
GND1
n.c.
OUT1
+
MODE
SVRR
SELECT
n.c.
OUT2
+
n.c.
GND2
VCC1
n.c.
OUT1
IN1
IN2
+
IN2
IN1
+
OUT2
n.c.
VCC2
1
2
3
4
5
6
7
8
9
10
11
12
20
19
18
17
16
15
14
13
TDA8547TS
MGK998
FUNCTIONAL DESCRIPTION
The TDA8547TS is a 2
×
0.7 W BTL audio power amplifier
capable of delivering 2
×
0.7 W output power to a 16
load at THD = 10% using a 5 V power supply. Using the
MODE pin the device can be switched to standby and
mute condition. The device is protected by an internal
thermal shutdown protection mechanism. The gain can be
set within a range from 6 to 30 dB by external feedback
resistors.
Power amplifier
The power amplifier is a Bridge-Tied Load (BTL) amplifier
with a complementary PNP-NPN output stage.
The voltage loss on the positive supply line is the
saturation voltage of a PNP power transistor, on the
negative side the saturation voltage of a NPN power
transistor. The total voltage loss is <1 V and with a 5 V
supply voltage and a 16
loudspeaker an output power of
0.7 W can be delivered, when two channels are operating.
If only one channel is operating then an output power of
1.2 W can be delivered (5 V, 8
)
.
MODE pin
The whole device (both channels) is in the standby mode
(with a very low current consumption) if the voltage at the
MODE pin is >(V
CC
0.5 V), or if this pin is floating. At a
MODE voltage level of less than 0.5 V the amplifier is fully
operational. In the range between 1.5 V and V
CC
1.5 V
the amplifier is in mute condition. The mute condition is
useful to suppress plop noise at the output caused by
charging of the input capacitor.
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