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参数资料
| 型号： | TS472IQT |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 1 CHANNEL, AUDIO PREAMPLIFIER, QCC24 |
| 封装： | 4 X 4 MM, LEAD FREE, QFN-24 |
| 文件页数： | 21/24页 |
| 文件大小： | 622K |
| 代理商： | TS472IQT |
Electrical characteristics
TS472
6/24
4
Electrical characteristics
Table 5.
Electrical characteristics at VCC = 3V
with GND = 0V, Tamb = 25°C (unless otherwise specified)
Symbol
Parameter
Min.
Typ.
Max.
Unit
en
Equivalent input noise voltage density
REQ=100Ω at 1KHz
10
THD+N
Total harmonic distortion + noise
20Hz
≤F ≤ 20kHz, Gain=20dB, Vin=50mVRMS
0.1
%
Vin
Input voltage, Gain=20dB
10
70
mVRMS
BW
Bandwidth @ -3dB
Bandwidth @ -1dB
pin A3, B3 floating
40
20
kHz
G
Overall output voltage gain (Rgs variable):
Minimum gain, Rgs infinite
Maximum gain, Rgs=0
-3
39.5
-1.5
41
0
42.5
dB
Zin
Input impedance referred to GND
80
100
120
k
Ω
RLOAD
Resistive load
10
k
Ω
CLOAD
Capacitive load
100
pF
ICC
Supply current, Gain=20dB
1.8
2.4
mA
ISTBY
Standby current
1
μA
PSRR
Power supply rejection ratio, Gain=20dB, F=217Hz,
Vripple=200mVpp, inputs grounded
Differential output
Single-ended outputs,
-70
-46
dB
Table 6.
Bias output: VCC = 3V, GND = 0V, Tamb = 25°C (unless otherwise specified)
Symbol
Parameter
Min.
Typ.
Max.
Unit
Vout
No load condition
1.9
2
2.1
V
Rout
Output resistance
80
100
120
W
Iout
Output bias current
2
mA
PSRR
Power supply rejection ratio, F=217Hz,
Vripple=200mVpp
70
80
dB
nV
Hz
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