MAX1238EEE Maxim Integrated Products, MAX1238EEE Datasheet - Page 7

• Manufacturer Part Number: MAX1238EEE
• Description: ADC (A/D Converters)
• Manufacturer: Maxim Integrated Products

Specifications of MAX1238EEE

• Number Of Adc Inputs: 12
• Architecture: SAR
• Conversion Rate: 94.4 KSPs
• Resolution: 12 bit
• Interface Type: I2C
• Voltage Reference: Internal 4.096 V
• Supply Voltage (max): 5 V
• Mounting Style: SMD/SMT
• Package / Case: QSOP-16
• Lead Free Status / Rohs Status: No

(V
ended, unipolar, T
DD
800
750
700
650
600
550
500
450
400
350
300
250
200
= 3.3V (MAX1237/MAX1239), V
0
0
CONVERSION RATE (EXTERNAL CLOCK)
A) INTERNAL REFERENCE ALWAYS ON
B) EXTERNAL REFERENCE
10
AVERAGE SUPPLY CURRENT vs.
20 30 40
CONVERSION RATE (ksps)
2.7V to 3.6V and 4.5V to 5.5V, Low-Power,
A
4-/12-Channel, 2-Wire Serial, 12-Bit ADCs
= +25°C, unless otherwise noted.)
-0.1
-0.2
-0.3
-0.4
-0.5
-0.6
-0.7
-0.8
-0.9
-1.0
_______________________________________________________________________________________
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
50
0
-40
-40
60
OFFSET ERROR vs. TEMPERATURE
-25
-25
GAIN ERROR vs. TEMPERATURE
70
-10
-10
MAX1238
80
TEMPERATURE (°C)
TEMPERATURE (°C)
90
5
5
DD
A
B
100
20
20
= 5V (MAX1236/MAX1238), f
35
35
1.0010
1.0008
1.0006
1.0004
1.0002
1.0000
0.9998
0.9996
0.9994
0.9992
0.9990
50
50
Typical Operating Characteristics (continued)
-40
65
65
NORMALIZED TO VALUE AT +25°C
INTERNAL REFERENCE VOLTAGE
-25
80
80
-10
vs. TEMPERATURE
MAX1239
TEMPERATURE (°C)
MAX1238
5
20
SCL
35
= 1.7MHz, (50% duty cycle), f
50
-0.4
-0.8
-1.2
-1.6
-2.0
-0.4
-0.8
-1.2
-1.6
-2.0
2.0
1.6
1.2
0.8
0.4
2.0
1.6
1.2
0.8
0.4
0
0
65
2.7
2.7
OFFSET ERROR vs. SUPPLY VOLTAGE
GAIN ERROR vs. SUPPLY VOLTAGE
80
3.2
3.2
3.7
1.00010
1.00008
1.00006
1.00004
1.00002
1.00000
0.99998
0.99996
0.99994
0.99992
0.99990
3.7
V
V
DD
DD
4.2
2.7
4.2
(V)
(V)
NORMALIZED REFERENCE VOLTAGE
MAX1237/MAX1239
NORMALIZED TO
REFERENCE VALUE AT
V
3.0
DD
= 3.3V
4.7
4.7
3.3 3.6 3.9
SAMPLE
vs. SUPPLY VOLTAGE
5.2 5.5
5.2 5.5
MAX1236/MAX1238
NORMALIZED TO
REFERENCE VALUE AT
V
V
DD
= 94.4ksps, single-
DD
= 5V
4.2 4.5 4.8 5.1 5.4
(V)
7