Owner's manual

MAX1365/MAX1367
Stand-Alone, 4.5-/3.5-Digit Panel Meters
with 4–20mA Output
_______________________________________________________________________________________ 7
INTERNAL REFERENCE VOLTAGE
vs. TEMPERATURE
MAX1365/67 toc10
TEMPERATURE (°C)
REFERENCE VOLTAGE (V)
605040302010
2.046
2.045
2.047
2.049
2.048
2.051
2.050
2.053
2.052
2.054
2.044
070
INTERNAL REFERENCE VOLTAGE
vs. ANALOG SUPPLY VOLTAGE
MAX1365/67 toc11
SUPPLY VOLTAGE (V)
REFERENCE VOLTAGE (V)
4.754.253.753.25
2.045
2.046
2.047
2.048
2.049
2.050
2.044
2.75 5.25
DATA OUTPUT RATE
vs. TEMPERATURE
MAX1365/67 toc12
TEMPERATURE (°C)
DATA OUTPUT RATE (Hz)
6035-15 10
4.92
4.98
4.96
4.94
5.00
5.02
5.04
5.06
5.08
5.10
4.90
-40 85
DATA OUTPUT RATE
vs. SUPPLY VOLTAGE
MAX1365/67 toc13
SUPPLY VOLTAGE (V)
DATA OUTPUT RATE (Hz)
4.744.233.21 3.72
4.995
4.990
4.985
5.000
5.005
5.010
5.015
5.020
4.980
2.70 5.25
OFFSET ERROR
vs. COMMON-MODE VOLTAGE
MAX1365/67 toc14
COMMON-MODE VOLTAGE (V)
OFFSET ERROR (LSB)
1.51.0-1.5 -1.0 -0.5 0 0.5
-0.15
-0.10
-0.05
0
0.05
0.10
0.15
0.20
-0.20
-2.0 2.0
V
NEG
STARTUP SCOPE SHOT
MAX1365/67 toc15
20ms/div
2V/div
1V/div
V
DD
V
NEG
CHARGE-PUMP OUTPUT VOLTAGE
vs. ANALOG SUPPLY VOLTAGE
MAX1365/67 toc16
SUPPLY VOLTAGE (V)
V
NEG
VOLTAGE (V)
4.754.253.753.25
-2.48
-2.46
-2.44
-2.42
-2.40
-2.50
2.75 5.25
SEGMENT CURRENT
vs. SUPPLY VOLTAGE
MAX1365/67 toc17
SUPPLY VOLTAGE (V)
SEGMENT CURRENT (µA)
4.744.233.723.21
5
10
15
20
25
30
0
2.70 5.25
R
ISET
= 25kΩ
-0.2
0
-0.1
0.2
0.1
0.3
0.4
-40 10-15 35 60 85
DAC ZERO-CODE OFFSET ERROR
vs. TEMPERATURE
MAX1365/67 toc18
TEMPERATURE (°C)
OFFSET ERROR (LSB)
Typical Operating Characteristics (continued)
(A
VDD
= D
VDD
= +5V, V
DAC_VDD
= +5.0V, GND = 0, LEDG = 0, V
LEDV
= +2.7V to +5.25V, V
REF+
- V
REF-
= 2.048V (external refer-
ence), V
EXT
= 7V, C
REF+
= C
REF-
= 0.1µF, C
NEGV
= 0.1µF. Internal clock mode, unless otherwise noted. T
A
= +25°C, unless other-
wise noted.)