lt1001amj8/883 Linear Technology Corporation, lt1001amj8/883 Datasheet - Page 7

• Manufacturer Part Number: lt1001amj8/883
• Description: Precision Operational Amplifier
• Manufacturer: Linear Technology Corporation

APPLICATIONS
Offset Voltage Adjustment
The input offset voltage of the LT1001, and its drift with
temperature, are permanently trimmed at wafer test to a
low level. However, if further adjustment of Vos is neces-
sary, nulling with a 10k or 20k potentiometer will not
degrade drift with temperature. Trimming to a value other
than zero creates a drift of (Vos/300) V/ C, e.g., if Vos is
INPUT
TANTALUM
2.2 F
R
1k
INPUT
IN
Improved Sensitivity Adjustment
+
15pF
10k
U
2
3
1
–
+
LT1001
7.5k
TUSONIX # 519-3188
7.5k
–15V
1k
3
2
INFORMATION
U
4
+
–
8
15-60pF
LT1001
1k
R
2N5486
f
7
6
1k
+15V
OUTPUT
–15V
1001 F02
W
6
0.01 F
0.01 F
1N914
1N914
3.9k
3.9k
DC Stabilized 1000v/ sec Op Amp
U
30k
30k
0.001 F
300
300
FULL POWER
BANDWIDTH 8MHz
2N5160
2N3866
1.8k
470
200 *
200 *
adjusted to 300 V, the change in drift will be 1 V/ C. The
adjustment range with a 10k or 20k pot is approximately
and resolution of the nulling can be improved by using a
smaller pot in conjunction with fixed resistors. The ex-
ample below has an approximate null range of 100 V.
The device under test should be warmed up for three
minutes and shielded from air currents.
33
22
10
2.5mV. If less adjustment range is needed, the sensitivity
200pF
200pF
2N3904
–
+
LT1001
DEVICE
UNDER
TEST
390
100k
0.1 F
2N5160
2N3866
0.1Hz to 10Hz Noise Test Circuit
1.2k
*ADJUST FOR
BEST SQUARE WAVE
AT OUTPUT
4.7 F
2N3906
2k
2N3904
(PEAK-TO-PEAK NOISE MEASURED IN 10 SEC INTERVAL)
24.3k
2N4440
+
–
2N4440
0.5
0.5
22 F TANTALUM
VOLTAGE GAIN = 50,000
LT1001
–
+
0.1 F
0.1 F
22 F TANTALUM
100k
–15V
0.1 F
+
2.2 F
4.3k
LT1001
+15V
1001 F04
OUTPUT
22 F
R
110k
IN
SCOPE
1001fb
7
= 1M
1001 F03
1