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LTC6910-1ITS8 查看數據表(PDF) - Linear Technology
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产品描述 (功能)
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LTC6910-1ITS8
Digitally Controlled Programmable Gain Amplifiers in SOT-23
Linear Technology
LTC6910-1ITS8 Datasheet PDF : 24 Pages
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LTC6910-1
LTC6910-2/LTC6910-3
TYPICAL PERFOR A CE CHARACTERISTICS
(LTC6910-1)
LTC6910-1 Gain Shift
vs Temperature
0.2
V
S
=
±
2.5V
OUTPUT UNLOADED
0.1
GAIN = 100
GAIN = 10
0
GAIN = 1
–0.1
–0.2
–50
0
50
100
TEMPERATURE (
°
C)
150
6910 G01
LTC6910-1 Frequency Response
50
GAIN OF 100
40
GAIN OF 50
V
S
=
±
5V, V
IN
= 5mV
RMS
30
GAIN OF 20
GAIN OF 10
20
GAIN OF 5
10
GAIN OF 2
GAIN OF 1
0
–10
100
1k 10k 100k 1M 10M
FREQUENCY (Hz)
6910 G02
LTC6910-1 –3dB Bandwidth
vs Gain Setting
8.0
7.5
7.0
•
6.5
6.0
•
5.5
5.0
•
4.5
4.0
•
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
1
V
IN
= 5mV
RMS
•
V
S
= 2.7V
•
V
S
=
±
5V
•
•
••
••
10
GAIN
••
100
6910 G03
LTC6910-1 Output Voltage Swing
vs Load Current
+V
S
+V
S
– 0.5
+V
S
– 1.0
V
S
=
±
2.5V
125
°
C
25
°
C
–40
°
C
SOURCE
+V
S
– 1.5
+V
S
– 2.0
–V
S
+ 2.0
–V
S
+ 1.5
–V
S
+ 1.0
–V
S
+ 0.5
–V
S
0.01
SINK
0.1
1
10
OUTPUT CURRENT (mA)
100
6910 G04
LTC6910-1 Power Supply
Rejection vs Frequency
90
V
S
=
±
2.5V
80
GAIN = 1
70
+SUPPLY
60
–SUPPLY
50
40
30
20
10
0
0.1
1
10
100
1000
FREQUENCY (kHz)
6910 G05
LTC6910-1 Noise Density
vs Frequency
100
INPUT-REFERRED
V
S
=
±
2.5V
T
A
= 25
°
C
GAIN = 1
GAIN = 10
10
GAIN = 100
1
1
10
100
FREQUENCY (kHz)
6910 G06
LTC6910-1 Distortion with Light
Loading (R
L
= 10k)
–30
3
V
S
=
±
2.5V
–40
V
OUT
= 1V
RMS
(2.83V
P-P
)
THD MEASURES HD2 AND HD3
1
–50
0.3
–60
GAIN = 100
–70
GAIN = 10
–80
GAIN = 1
–90
0.1
0.03
0.01
0.003
–100
0
50
100
150
FREQUENCY (kHz)
0.001
200
6910 G07
LTC6910-1 Distortion with Heavy
Loading (R
L
= 500
Ω
)
–30
3
–40
GAIN = 100
1
–50
0.3
GAIN = 10
–60
0.1
–70
0.03
GAIN = 1
–80
0.01
–90
V
S
=
±
2.5V
V
OUT
= 1V
RMS
(2.83V
P-P
)
THD MEASURES HD2 AND HD3
–100
0
50
100
150
FREQUENCY (kHz)
0.003
0.001
200
6910 G08
LTC6910-1 THD + Noise
vs Input Voltage
–20
f
IN
= 1kHz
–30
V
S
=
±
5V
NOISE BW = 22kHz
–40
GAIN SETTING = 100
–50
–60
GAIN SETTING = 10
–70
–80
–90
–100
–110
0.01
GAIN SETTING = 1
0.1
1
INPUT VOLTAGE (V
P-P
)
10
6910 G09
6910123fa
11
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