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PDF TDA8547TS Data sheet ( Hoja de datos )
| Número de pieza | TDA8547TS | |
| Descripción | 2 x 0.7 W BTL audio amplifier with output channel switching | |
| Fabricantes | NXP Semiconductors | |
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INTEGRATED CIRCUITS
DATA SHEET
TDA8547TS
2 × 0.7 W BTL audio amplifier with
output channel switching
Product specification
Supersedes data of 1997 Oct 14
1998 Apr 01
1 page  
NXP Semiconductors
2 × 0.7 W BTL audio amplifier with
output channel switching
Product specification
TDA8547TS
SELECT pin
If the voltage at the SELECT pin is in the range between
1.5 V and VCC − 1.5 V, or if it is kept floating, then both
channels can be operational. If the SELECT pin is set to a
LOW voltage or grounded, then only channel 2 can
operate and the power amplifier of channel 1 will be in the
standby mode. In this case only the loudspeaker at
channel 2 can operate and the loudspeaker at channel 1
will be switched off. If the SELECT pin is set to a
HIGH level or connected to VCC, then only channel 1 can
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.
CONTROL PIN
STATUS OF OUTPUT
CHANNEL
MODE
HIGH(1)/NC(2)
HVP(4)
LOW(5)
HVP(4)/LOW(5)
HVP(4)/LOW(5)
HVP(4)/LOW(5)
SELECT
X(3)
HVP(4)/NC(2)
HVP(4)/NC(2)
HIGH(1)
HVP(4)/NC(2)
LOW(5)
CHANNEL 1 CHANNEL 2
standby
mute
on
standby
mute
on
mute/on
mute/on
standby
standby
mute/on
mute/on
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.
TYP. Iq
(mA)
0
15
15
8
15
8
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134).
SYMBOL
PARAMETER
CONDITIONS
VCC
VI
IORM
Tstg
Tamb
VPsc
Ptot
supply voltage
input voltage
repetitive peak output current
storage temperature
operating ambient temperature
AC and DC short-circuit safe voltage
power dissipation
operating
MIN.
−0.3
−0.3
−
−55
−40
−
−
MAX.
+18
VCC + 0.3
1
+150
+85
10
1.1
UNIT
V
V
A
°C
°C
V
W
1998 Apr 01
5
5 Page 
NXP Semiconductors
2 × 0.7 W BTL audio amplifier with
output channel switching
Product specification
TDA8547TS
10
handbook, halfpage
THD
(%)
1
10−1
MGK989
(1)
10−2
10
102 103 104 f (Hz) 105
Po = 0.5 W; Gv = 20 dB.
(1) VCC = 5 V; RL = 8 Ω.
Fig.7 THD as a function of frequency.
−60
handbook, halfpage
αcs
(dB)
−70
−80
−90
MGK699
(1)
(2)
(3)
−100
10
102 103
VCC = 5 V; Vo = 2 V; RL = 8 Ω.
(1) Gv = 30 dB.
(2) Gv = 20 dB.
(3) Gv = 6 dB.
104 f (Hz) 105
Fig.8 Channel separation as a function of
frequency.
handbook−,2h0alfpage
SVRR
(dB)
−40
−60
MGD894
(1)
(2)
(3)
−80
10 102 103
VCC = 5 V; RS = 0 Ω; Vr = 100 mV.
(1) Gv = 30 dB.
(2) Gv = 20 dB.
(3) Gv = 6 dB.
104 f (Hz) 105
Fig.9 SVRR as a function of frequency.
1998 Apr 01
2
handbook, halfpage
Po
(W)
1.5
1
(1) (2)
MGK990
0.5
0
0 4 8 VCC (V) 12
THD = 10%.
(1) RL = 8 Ω.
(2) RL = 16 Ω.
Fig.10 Po as a function of VCC.
11
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| PDF Descargar | [ Datasheet TDA8547TS.PDF ] | |
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