LT1128 Linear Technology Corporation, LT1128 Datasheet - Page 5

• Manufacturer Part Number: LT1128
• Description: Ultra Low Noise Precision High Speed Op Amps
• Manufacturer: Linear Technology Corporation

TYPICAL PERFOR
10nV
100
180
160
140
120
100
0.1
80
40
60
20
10
0
1
0.6
1
0
10Hz Voltage Noise Distribution
Total Noise vs Matched Source
Resistance
0.1Hz to 10Hz Voltage Noise
V
T
A
S
0.8
= 25 C
MATCHED SOURCE RESISTANCE ( )
= 15V
3
VOLTAGE NOISE DENSITY (nV/ Hz)
R
R
S
S
8
70
148
2
10
1.0
–
+
158
57
28
AT 10Hz
2 R
30
1.2
7 4
TIME (SEC)
4
2 3 2 2
S
NOISE ONLY
100 300
1.4
6
1.6
1
2
V
T
500 UNITS
MEASURED
FROM 4 RUNS
S
A
LT1020/1120 • TPC01
LT1028/1128 • TPC04
= 25 C
AT 1kHz
= 15V
1k
3 2 1 1 1
1.8
LT1028/1128 • TPC07
V
T
A
S
W
8
= 25 C
= 15V
3k
2.0
A
10k
U
2.2
10
CE
C
10nV
100
0.1
HARA TERISTICS
10
1
1
0
0.01Hz to 1Hz Voltage Noise
Total Noise vs Unmatched
Source Resistance
Wideband Noise, DC to 20kHz
V
T
A
S
UNMATCHED SOURCE RESISTANCE ( )
= 15V
= 25 C
3
R
S
HORIZONTAL SCALE = 0.5ms/DIV
20
VERTICAL SCALE = 0.5 V/DIV
C
10
AT 10Hz
30
40
TIME (SEC)
2 R
100 300
S
NOISE ONLY
60
LT1028/1128 • TPC05
1k
AT 1kHz
V
T
LT1028/1128 • TPC08
A
S
80
= 25 C
= 15V
3k
10k
100
0.01
100
O.4
0.1
2.0
1.6
1.2
0.8
0.1
10
10
0
1
1
100
–50
10
Wideband Voltage Noise
(0.1Hz to Frequency Indicated)
Voltage Noise vs Temperature
Current Noise Spectrum
MAXIMUM
TYPICAL
V
V
T
S
S
A
–25
= 15V
= 15V
= 25 C
LT1028/LT1128
1k
0
TEMPERATURE ( C)
100
BANDWIDTH (Hz)
FREQUENCY (Hz)
AT 10Hz
10k
1/f CORNER = 250Hz
1/f CORNER = 800Hz
25
AT 1kHz
50
100k
1k
75
LT1028/1128 • TPC06
LT1028/1128 • TPC03
LT1028/1128 • TPC09
1M
100
5
10M
125
10k