LT6010 Linear Technology Corporation, LT6010 Datasheet - Page 11

• Manufacturer Part Number: LT6010
• Description: 135?a, 14nv/rthz, Rail-to-rail Output Precision Op Amp With Shutdown
• Manufacturer: Linear Technology Corporation

APPLICATIO S I FOR ATIO
Offset Voltage Adjustment
The input offset voltage of the LT6010 and its drift with
temperature are permanently trimmed at wafer testing to
the low level as specified in the electrical characteristic.
However, if further adjustment of V
a 50k potentiometer is possible and will not degrade drift
with temperature. Trimming to a value other than zero
INPUT
INPUT
U
2
3
2
3
1
1
+
+
–
–
LT6010
LT6010
Figure 1A
Figure 2A
50k
10k
50k
10k
U
8
4
8
4
V
V
ee
ee
7
7
6010 F01a
6010 F02a
6
6
OS
W
is desired, nulling with
V
OUTPUT
V
OUTPUT
CC
CC
Improved Sensitivity Adjustment
U
Standard Adjustment
creates a drift of (V
to 300 V, the change in drift will be 1 V/ C. The adjustment
range with a 50k pot is approximately 0.9mV (see Figures
1A and 1B). The sensitivity and resolution of the nulling can
be improved by using a smaller pot in conjunction with fixed
resistors. The configuration shown has an approximate
nulling range of 150 V (see Figures 2A and 2B).
–100
–150
–200
–0.2
–0.4
–0.6
–0.8
–1.0
200
150
100
–50
1.0
0.8
0.6
0.4
0.2
50
0
0
0
0
OS
0.2
0.2
POTENTIOMETER POSITION
POTENTIOMETER POSITION
/300 V) V/ C, e.g., if V
Figure 1B
Figure 2B
0.4
0.4
0.6
0.6
0.8
0.8
6010 F01b
6010 F02b
1.0
1.0
LT6010
OS
is adjusted
sn6010 6010fs
11