MAX6143AASA25 Datasheet, PDF (15/16 Pages) Maxim Integrated Products – High-Precision Voltage Reference with Temperature Sensor

High-Precision Voltage Reference with
Temperature Sensor
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.
( V_OUT + 2V) TO 40V INPUT
IN
SHDN
OUT
*
MAX6143
TEMP
TRIM
GND
REFERENCE
OUTPUT
MAX5436
50kΩ
POTENTIOMETER
*OPTIONAL.
Figure 2. Applications Circuit Using the MAX5436 Potrntiometer
Pin Configuration
TOP VIEW
I.C.* 1
IN 2
TEMP 3
GND 4
MAX6143
8 I.C.*
7 SHDN
6 OUT
5 TRIM
SO
*INTERNALLY CONNECTED. DO NOT CONNECT.
Chip Information
TRANSISTOR COUNT: 429
PROCESS: BiCMOS
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