MAX1239EEE-T Datasheet, PDF (7/22 Pages) Maxim Integrated Products – 2.7V to 3.6V and 4.5V to 5.5V, Low-Power, 4-/12-Channel, 2-Wire Serial, 12-Bit ADCs

2.7V to 3.6V and 4.5V to 5.5V, Low-Power,
4-/12-Channel, 2-Wire Serial, 12-Bit ADCs
Typical Operating Characteristics (continued)
(V_DD = 3.3V (MAX1237/MAX1239), V_DD = 5V (MAX1236/MAX1238), f_SCL = 1.7MHz, (50% duty cycle), f_SAMPLE = 94.4ksps, single-
ended, unipolar, T_A = +25°C, unless otherwise noted.)
AVERAGE SUPPLY CURRENT vs.
CONVERSION RATE (EXTERNAL CLOCK)
800
750
A) INTERNAL REFERENCE ALWAYS ON
B) EXTERNAL REFERENCE
700
A
650
600
550
500
B
450
400
350
300
250
MAX1238
200
0 10 20 30 40 50 60 70 80 90 100
CONVERSION RATE (ksps)
1.0010
1.0008
INTERNAL REFERENCE VOLTAGE
vs. TEMPERATURE
NORMALIZED TO VALUE AT +25°C
1.0006
1.0004
MAX1238
1.0002
1.0000
0.9998
0.9996
MAX1239
0.9994
0.9992
0.9990
-40 -25 -10 5 20 35 50 65 80
TEMPERATURE (°C)
1.00010
1.00008
1.00006
1.00004
NORMALIZED REFERENCE VOLTAGE
vs. SUPPLY VOLTAGE
MAX1236/MAX1238
NORMALIZED TO
REFERENCE VALUE AT
V_DD = 5V
1.00002
1.00000
0.99998
0.99996
0.99994
MAX1237/MAX1239
NORMALIZED TO
0.99992 REFERENCE VALUE AT
0.99990 ^{VDD = 3.3V}
2.7 3.0 3.3 3.6 3.9 4.2 4.5 4.8 5.1 5.4
V_DD (V)
OFFSET ERROR vs. TEMPERATURE
0
-0.1
-0.2
-0.3
-0.4
-0.5
-0.6
-0.7
-0.8
-0.9
-1.0
-40 -25 -10 5 20 35 50 65 80
TEMPERATURE (°C)
OFFSET ERROR vs. SUPPLY VOLTAGE
2.0
1.6
1.2
0.8
0.4
0
-0.4
-0.8
-1.2
-1.6
-2.0
2.7 3.2 3.7 4.2 4.7 5.2 5.5
V_DD (V)
GAIN ERROR vs. TEMPERATURE
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
-40 -25 -10 5 20 35 50 65 80
TEMPERATURE (°C)
GAIN ERROR vs. SUPPLY VOLTAGE
2.0
1.6
1.2
0.8
0.4
0
-0.4
-0.8
-1.2
-1.6
-2.0
2.7 3.2 3.7 4.2 4.7 5.2 5.5
V_DD (V)
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