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TS4973 bảng dữ liệu(PDF) 4 Page - STMicroelectronics

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Giải thích chi tiết về linh kiện  1.2W TWO AUDIO INPUTS WITH GAIN CONTROL POWER AMPLIFIER WITH STANDBY MODE ACTIVE LOW
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
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TS4973 bảng dữ liệu(HTML) 4 Page - STMicroelectronics

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TS4973
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ELECTRICAL CHARACTERISTICS
V
CC = +3.3V, GND = 0V, Tamb = 25°C (unless otherwise specified)
4)
Symbol
Parameter
Min.
Typ.
Max.
Unit
ICC
Supply Current
No input signal, no load
5.5
8
mA
ISTANDBY
Standby Current 1)
No input signal, Vstdby = Vcc, RL = 8
1. Standby mode is actived when Vstdby is tied to Vcc
10
1000
nA
Voo
Output Offset Voltage
No input signal, RL = 8
520
mV
Po
Output Power
THD = 1% Max, f = 1kHz, RL = 8
350
500
mW
BTL GAIN
GS = Low
input signal Vin = 100mV rms, RL = 8
5.6
6
6.4
dB
THD + N
Total Harmonic Distortion + Noise
Po = 250mW rms, Gv = 2, 20Hz < f < 20kHz, RL = 8
0.1
%
PSRR
Power Supply Rejection Ratio2)
f = 217Hz, RL = 8
Ω, GS = Low, Vripple = 200mV rms
Input Grounded, Cin = 220nF, Cb = 1µF
2. Dynamic measurements - 20*log(rms(Vout)/rms(Vripple)). Vripple is an added sinus signal to Vcc @ f = 217Hz
50
53
dB
PSRR
Power Supply Rejection Ratio3)
f = 217Hz, RL = 8
Ω, GS = Low, Vripple = 200mV rms
Input floating, Cb = 1µF
3. Dynamic measurements - 20*log(rms(Vout)/rms(Vripple)). Vripple is an added sinus signal to Vcc @ f = 217Hz
4. All electrical values are made by correlation between 2.8V and 5V measurements
75
dB
Zin
Input Impedance
GS = Low
37.5
50
62.5
K
Rfeed
Internal Feedback Resistor
37.5
50
62.5
K
Φ
M
Phase Margin at Unity Gain
RL = 8Ω, CL = 500pF
70
Degrees
GM
Gain Margin
RL = 8Ω, CL = 500pF
20
dB
GBP
Gain Bandwidth Product
RL = 8Ω
2MHz


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