
MAX11634–MAX11637
12-Bit, 300ksps ADCs with Differential
Track/Hold, and Internal Reference
6
_______________________________________________________________________________________
Typical Operating Characteristics (continued)
(VDD = 3V, VREF = 2.5V, fSCLK = 4.8MHz, CLOAD = 30pF, TA = +25°C for MAX11635/MAX11637, unless otherwise noted. VDD = 5V,
VREF = 4.096V, fSCLK = 4.8MHz, CLOAD = 30pF, TA = +25°C for MAX11634/MAX11636, unless otherwise noted.)
DIFFERENTIAL NONLINEARITY
vs. OUTPUT CODE
MAX11634
toc04
OUTPUT CODE (DECIMAL)
DNL
(LSB)
3072
2048
1024
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1.0
-1.0
0
4096
MAX11635/MAX11637
fSAMPLE = 300ksps
SINAD vs. FREQUENCY
MAX11634
toc05
FREQUENCY (kHz)
SINAD
(dB)
100
10
55
60
65
70
75
80
50
1
1000
MAX11635/MAX11637
MAX11634/MAX11636
SFDR vs. FREQUENCY
MAX11634
toc06
FREQUENCY (kHz)
SFDR
(dB)
100
10
60
70
80
90
100
50
11000
MAX11635/MAX11637
MAX11634/MAX11636
THD vs. FREQUENCY
MAX11634
toc07
FREQUENCY (kHz)
THD
(dB)
100
10
-90
-80
-70
-60
-50
-100
1
1000
MAX11634/MAX11636
MAX11635/MAX11637
SUPPLY CURRENT vs. SAMPLING RATE
MAX11634
toc08
SAMPLING RATE (ksps)
I DD
(A)
100
10
500
1000
1500
2000
2500
3000
0
11000
MAX11634/MAX11636
VDD = 5V
INTERNAL REFERENCE
EXTERNAL REFERENCE
SUPPLY CURRENT vs. SAMPLING RATE
MAX11634
toc09
SAMPLING RATE (ksps)
I DD
(A)
100
10
200
400
600
800
1000
1200
1400
1600
1800
0
1
1000
INTERNAL REFERENCE
EXTERNAL REFERENCE
MAX11635/MAX11637
VDD = 3V
SUPPLY CURRENT vs. SUPPLY VOLTAGE
MAX11634
toc10
VDD (V)
I DD
(A)
5.15
4.85
5.05
4.95
1200
1400
1600
1800
2000
2200
2400
2600
1000
4.75
5.25
MAX11634/MAX11636
fSAMPLE = 300ksps
INTERNAL REFERENCE
EXTERNAL REFERENCE