LTC1043 查看數據表（PDF） - Linear Technology
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LTC1043 Datasheet PDF : 16 Pages
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LTC1043
TYPICAL APPLICATIO S
Single 5V Supply, Ultra Precision
Instrumentation Amplifier
+
INPUT
–
LTC1043
7
8
11
1µF
12
13
14
1µF
100Ω
5V
3+ 7
LTC1052 6
2–
8
1
4 0.1µF 0.1µF
OUTPUT
AV = 1000
99.9k
43k
V+ = 5V
6
5
0.22µF
10k
2
1N914
1µF
1µF
NONPOLARIZED
3
18
16
17
0.0047
15
≈ –0.5V
4
INPUT AND OUTPUT VOLTAGE RANGE INCLUDES GROUND.
5V
INPUT REFERRED OFFSET ERRORS ARE TYPICALLY 3µV WITH
1µV OF NOISE
CMRR ~ 120dB
LTC1043 • A10
Voltage Controlled Current Source with
Ground Referred Input and Output
5V
INPUT
0V TO 2V
3+
8
1
1/2 LT1013
2–
4
0.68µF
5V
1k
4
8
7
11
1µF
1µF
100Ω
12
14
13
1/2 LTC1043
17
16
1OUT =
VIN
100Ω
0.001µF
OPERATES FROM A SINGLE 5V SUPPLY
LTC1043 • A11
Precision Instrumentation Amplifier
+ INPUT
5V
4
1/2 LTC1043
6
5
– INPUT 18
2
1µF
3
15
16
17
0.01µF
CHOPPER
1/4 LTC1043
7
1µF
11
8
1µF
AC AMPLIFIER
5V
PHASE
SENSITIVE
DEMODULATOR
3+ 7
LT1056
1M 2 –
4
– 5V
1µF
6
1/4 LTC1043
13
100k
12
100k 100k
14
100Ω
DC
OUTPUT AMPLIFIER
1µF
5V
2–
7
6
LT1056
OUTPUT
3+
4
–5V
0.01
R2
100k
– 5V
OFFSET = 10µV
DRIFT = 0.1µV/°C
FULL DIFFERENTIAL INPUT
R1
100Ω
CMRR = 140dB
OPEN LOOP GAIN > 108
GAIN = R2/R1 + 1
IBIAS = 1nA
LTC1043 • A12
10
1043fa
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