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TS4974IQT Folha de dados(PDF) 4 Page - STMicroelectronics

Nome de Peças TS4974IQT
Descrição Electrónicos  1W Differential Audio Power Amplifier with Up/Down Digital Volume Control Pins
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TS4974IQT Folha de dados(HTML) 4 Page - STMicroelectronics

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TS4974
Electrical Characteristics
4/8
2
Electrical Characteristics
Table 3: V
CC = +5V, GND = 0V, Tamb = 25°C (unless otherwise specified)
Symbol
Parameter
Min.
Typ.
Max.
Unit
ICC
Supply Current
No input signal, no load
3.2
mA
ISTANDBY
Standby Current
No input signal, Vstdby = Gnd, RL = 8
300
2000
nA
Voo
Output Offset Voltage
No input signal, RL = 8
Ω, Floating inputs
520
mV
Po
Output Power
THD = 1% Max, f = 1kHz, RL = 8
0.8
1
W
THD + N
Total Harmonic Distortion + Noise
Po = 500mW rms,
20Hz < F < 20kHz, RL = 8
Ω, 0dB gain, Cb=1µF, Cin=330nF
0.5
%
PSRR
Power Supply Rejection Ratio1
F = 217Hz, RL = 8
Ω, )
Vripple = 200mVpp, Input Grounded, Cb=1µF, Cin=330nF
1)
Dynamic measurements - 20*log(rms(Vout)/rms(Vripple)). Vripple is an added sinus signal to Vcc @ F = 217Hz.
75
85
dB
CMRR
Common Mode Rejection Ratio2
F = 217Hz, RL = 8
Ω,
Vincm = 200mVpp, Cb = 1µF, Cin=330nF
2)
Dynamic measurements - 20*log(rms(Vout)/rms(Vincm)).
45
61
dB
SNR
Signal-to-Noise Ratio ( Weighted A, 6dB gain )
( RL = 8
Ω, THD + N ≤ 0.5%, 20Hz < F < 20kHz)
100
dB
Gs
Start up Gain
-12
dB
G
Digital Gain Range
-33
+12
dB
Gain Step
size
3dB
Gain accu-
racy
-1
+1
dB
Twu
Wake-up Time
15
ms
VN
Output Voltage Noise F = 20Hz to 20kHz, RL = 8
Unweighted
Weighted A
21
17
µV
RMS
Zin
Differential input impedance
48
60
75
k
Tdebounce
Debouncing time
10
ms
Tautorepeat Time between volume changes
160
ms
Trange
During autorepeat mode, necessary time to cover the whole gain
range
2500
ms


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