MAX1149 Maxim Integrated Products, MAX1149 Datasheet - Page 7

• Manufacturer Part Number: MAX1149
• Description: (MAX1146 - MAX1149) 14-Bit ADCs
• Manufacturer: Maxim Integrated Products

(V
(50% duty cycle), 18 clocks/conversion (116ksps), V
nal +2.500V reference at REF (MAX1147/MAX1149), C
DD
1200
1000
-0.5
-1.0
-1.5
800
600
400
200
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1.5
1.0
0.5
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
0
0
= +5.0V (MAX1146/MAX1148), V
4.75
0.01
SUPPLY CURRENT vs. SUPPLY VOLTAGE
0
4.80
FAST POWER-DOWN
4.85 4.90 4.95 5.00
0.1
INTERNAL REFERENCE
EXTERNAL REFERENCE
4096
vs. CONVERSION RATE
INL vs. OUTPUT CODE
(MAX1146/MAX1148)
CONVERSION RATE (ksps)
SUPPLY CURRENT
SUPPLY VOLTAGE (V)
OUTPUT CODE
1
_______________________________________________________________________________________
8192
5.05 5.10
10
POWER-DOWN
12288
5.15
100
FULL
5.20
16384
DD
1000
5.25
= +3.3V (MAX1147/MAX1149), SHDN = V
Multichannel, True-Differential,
-0.5
-1.0
-1.5
1.5
1.0
0.5
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
2.5
2.0
1.5
1.0
0.5
0
0
0
vs. SUPPLY VOLTAGE (MAX1147/MAX1149)
2.7
-40
0
REFADJ
SUPPLY CURRENT vs. TEMPERATURE
MAX1146/MAX1148 INTERNAL REFERENCE
MAX1147/MAX1149 INTERNAL REFERENCE
MAX1146/MAX1148 EXTERNAL REFERENCE
MAX1147/MAX1149 EXTERNAL REFERENCE
REF
2.8
SHUTDOWN SUPPLY CURRENT
-15
= 2.2µF, C
2.9 3.0 3.1
4096
DNL vs. OUTPUT CODE
= V
SUPPLY VOLTAGE (V)
TEMPERATURE (°C)
DD
OUTPUT CODE
10
, external +4.096V reference at REF (MAX1146/MAX1148), exter-
8192
LOAD
3.2 3.3
Typical Operating Characteristics
35
= 50pF, T
12288
3.4
60
Serial, 14-Bit ADCs
3.5
16384
A
3.6
DD
85
= +25°C, unless otherwise noted.)
, V
COM
0.45
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
0
0
vs. SUPPLY VOLTAGE (MAX1146/MAX1148)
= 0, f
4.75
-40
2.7
SUPPLY CURRENT vs. SUPPLY VOLTAGE
EXTERNAL REFERENCE
INTERNAL REFERENCE
MAX1147/MAX1149
SCLK
SHUTDOWN SUPPLY CURRENT
SHUTDOWN SUPPLY CURRENT
4.85
-15
(MAX1147/MAX1149)
vs. TEMPERATURE
SUPPLY VOLTAGE (V)
= 2.1MHz, external clock
SUPPLY VOLTAGE (V)
TEMPERATURE (°C)
3.0
4.95
MAX1146/MAX1148
10
5.05
35
3.3
5.15
60
5.25
3.6
85
7