Datasheet

MAX873/MAX875/MAX876
Low-Power, Low-Drift, +2.5V/+5V/+10V
Precision Voltage References
______________________________________________________________________________________ 11
Temperature Coefficient vs. Operating
Temperature Range for a
1 LSB Maximum Error
In a data converter application, the reference voltage
of the converter must stay within a certain limit to keep
the error in the data converter smaller than the resolu-
tion limit through the operating temperature range.
Figure 1 shows the maximum allowable reference-volt-
age temperature coefficient to keep the conversion
error to less than 1 LSB, as a function of the operating
temperature range (T
MAX
- T
MIN
) with the converter
resolution as a parameter. The graph assumes the ref-
erence-voltage temperature coefficient as the only
parameter affecting accuracy.
In reality, the absolute static accuracy of a data con-
verter is dependent on the combination of many para-
meters such as integral nonlinearity, differential
nonlinearity, offset error, gain error, as well as voltage-
reference changes.
IN
OUT
GND
*OPTIONAL.
*
( V
OUT
+ 2V) TO 40V INPUT
REFERENCE
OUTPUT
MAX5436
50kΩ
POTENTIOMETER
TRIM
TEMP
MAX873
MAX875
MAX876
Figure 2. Applications Circuit Using the MAX5436 Potentiometer
Chip Information
TRANSISTOR COUNT: 429
PROCESS: BiCMOS
OUT
TRIMGND
*INTERNALLY CONNECTED. DO NOT CONNECT.
1
2
8
7
I.C.*
N.C.IN
TEMP
I.C.*
SO
TOP VIEW
3
4
6
5
MAX873
MAX875
MAX876
Pin Configuration