TDA8551T 查看數據表（PDF） - Philips Electronics
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TDA8551T Datasheet PDF : 20 Pages
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Philips Semiconductors
1 W BTL audio amplifier with digital volume control
Product specification
TDA8551
CHARACTERISTICS
VP = 5 V; Tamb = 25 °C; RL = 8 Ω; VMODE = 0 V; total gain setting at +7 dB (unless otherwise specified); measured in
test circuit of Fig.4.
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP. MAX. UNIT
DC characteristics
VP
Iq
Istb
VO
VOUT+ − VOUT−
supply voltage
quiescent current
standby current
DC output voltage
differential output offset
Mode select pin
VMODE
input voltage
IMODE
α
input current
mute attenuation
2.7
5
5.5
V
RL = ∞; note 1
−
VMODE = VP
−
note 2
−
6
10
mA
−
10
µA
2.5 −
V
−
−
50
mV
standby mode
mute mode
operating mode
0 < VMODE < VP
note 3
VP − 0.5 −
1
−
0
−
−
−
80
90
VP
V
VP − 1.4 V
0.5
V
100
nA
−
dB
Volume control
trep
Vth(UP)
Vfloat(max)
Vfloat(min)
Vth(DOWN)
IUP/DOWN
Gv(max)
pulse repetition time
100
−
−
ns
UP/DOWN pin up threshold level
4.2
−
VP
V
UP/DOWN pin floating high level
−
−
3.4
V
UP/DOWN pin floating low level
1.0
−
−
V
UP/DOWN pin down threshold level
0
−
0.6
V
input current UP/DOWN pin
0 < VUP/DOWN < VP −
−
200
µA
maximum voltage gain (including
power amplifier)
19
20 21
dB
Gv(min)
minimum voltage gain (including
power amplifier)
−62
−60 −58
dB
nvol
∆Gv
Zi
Vi(rms)(max)
number of volume steps
voltage gain variation per step
input impedance
maximum input voltage (RMS value)
−
64
−
−
1.25 −
dB
14
20
−
kΩ
−
−
2.0
V
AC characteristics (f = 1 kHz)
Po
output power
THD = 10%
1
1.4 −
W
THD = 0.5%
0.6
1.0 −
W
THD
Vn(o)
SVRR
total harmonic distortion
noise output voltage
supply voltage ripple rejection
Po = 0.5 W; note 4 −
note 5
−
note 6
48
0.15 0.5
%
60 100
µV
53
−
dB
Vi(IN)(max)
maximum input voltage on pin IN
THD = 1%;
−
−
2.0
V
Gv = −50 dB
to 0 dB
1998 Feb 23
6
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