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參數(shù)資料
| 型號： | TS472EIJT |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | Very Low Noise Microphone Preamplifier with 2V Biased Output and Active Low Standby Mode |
| 中文描述： | 極低噪聲麥克風(fēng)前置放大器，2V的偏壓輸出和有源低待機(jī)模式 |
| 文件頁數(shù)： | 4/20頁 |
| 文件大小： | 611K |
| 代理商： | TS472EIJT |
Electrical Characteristics
TS472
4/20
3
Electrical Characteristics
Table 4.
V
CC
= 3V, GND = 0V, T
amb
= 25°C (unless otherwise specified)
Symbol
Parameter
Min.
Typ.
Max.
Unit
e
n
Equivalent Input Noise Voltage Density
R
EQ
=100
at 1KHz
10
THD+N
Total Harmonic Distortion + Noise
20Hz
≤
F
≤
20kHz, Gain=20dB, Vin=50mV
RMS
0.1
%
V
IN
Input Voltage, Gain=20dB
10
70
mV
RMS
B
W
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
Z
IN
Input impedance referred to GND
80
100
120
k
R
LOAD
Resistive load
10
k
C
LOAD
Capacitive load
100
pF
I
CC
Supply current, Gain=20dB
1.8
2.4
mA
I
STANDBY
Standby current
1
μ
A
PSRR
Power Supply Rejection Ratio, Gain=20dB, F=217Hz,
Vripple=200mVpp, Inputs grounded
Differential Output
Single-Ended Outputs,
-70
-46
dB
Table 5.
Bias output: V
CC
= 3V, GND = 0V, T
amb
= 25°C (unless otherwise specified)
Symbol
Parameter
Min.
Typ.
Max.
Unit
V
OUT
No load condition
1.9
2
2.1
V
R
OUT
Output resistance
80
100
120
I
OUT
Output Bias Current
2
mA
PSRR
Power Supply Rejection Ratio, F=217Hz,
Vripple=200mVpp
70
80
dB
Hz
--nV
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