LT1031_15 Datasheet, PDF (11/12 Pages) Linear Technology – Precision 10V Reference

APPLICATIO CIRCUITS
LT1031/LH0070
Precision DAC Reference with System TC Trim
LT1031
15V IN
OUT
GND
8.87k
1%
1.24k
1%
D1
IN457
50k
TC TRIM*
10k
1%
50k
ROOM TEMP
TRIM
10k
1%
D2
200k
IN457 1%
10.36k
1%
50k
1mA
8.45k
*TRIMS 1mA REFERENCE CURRENT
TC BY ± 40ppm/°C. THIS TRIM
SCHEME HAS VERY LITTLE EFFECT ON ROOM
TEMPERATURE CURRENT TO MINIMIZE ITERATIVE
TRIMMING.
DAC
LT1031 • AC09
EQUIVALENT SCHEMATIC
INPUT
Q3
D1
D2
D3
OUTPUT
R1
Q1
–+
A1
D4
6.3V
R2
Q2
GND
LT1031 • ES01
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
1031fb
11