Datasheet

MAX11634–MAX11637
12-Bit, 300ksps ADCs with Differential
Track/Hold, and Internal Reference
6 _______________________________________________________________________________________
Typical Operating Characteristics (continued)
(V
DD
= 3V, V
REF
= 2.5V, f
SCLK
= 4.8MHz, C
LOAD
= 30pF, T
A
= +25°C for MAX11635/MAX11637, unless otherwise noted. V
DD
= 5V,
V
REF
= 4.096V, f
SCLK
= 4.8MHz, C
LOAD
= 30pF, T
A
= +25°C for MAX11634/MAX11636, unless otherwise noted.)
DIFFERENTIAL NONLINEARITY
vs. OUTPUT CODE
MAX11634 toc04
OUTPUT CODE (DECIMAL)
DNL (LSB)
307220481024
-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
f
SAMPLE
= 300ksps
SINAD vs. FREQUENCY
MAX11634 toc05
FREQUENCY (kHz)
SINAD (dB)
10010
55
60
65
70
75
80
50
1 1000
MAX11635/MAX11637
MAX11634/MAX11636
SFDR vs. FREQUENCY
MAX11634 toc06
FREQUENCY (kHz)
SFDR (dB)
10010
60
70
80
90
100
50
11000
MAX11635/MAX11637
MAX11634/MAX11636
THD vs. FREQUENCY
MAX11634 toc07
FREQUENCY (kHz)
THD (dB)
10010
-90
-80
-70
-60
-50
-100
1 1000
MAX11634/MAX11636
MAX11635/MAX11637
SUPPLY CURRENT vs. SAMPLING RATE
MAX11634 toc08
SAMPLING RATE (ksps)
I
DD
(µA)
10010
500
1000
1500
2000
2500
3000
0
11000
MAX11634/MAX11636
V
DD
= 5V
INTERNAL REFERENCE
EXTERNAL REFERENCE
SUPPLY CURRENT vs. SAMPLING RATE
MAX11634 toc09
SAMPLING RATE (ksps)
I
DD
(µA)
10010
200
400
600
800
1000
1200
1400
1600
1800
0
1 1000
INTERNAL REFERENCE
EXTERNAL REFERENCE
MAX11635/MAX11637
V
DD
= 3V
SUPPLY CURRENT vs. SUPPLY VOLTAGE
MAX11634 toc10
V
DD
(V)
I
DD
(µA)
5.154.85 5.054.95
1200
1400
1600
1800
2000
2200
2400
2600
1000
4.75 5.25
MAX11634/MAX11636
f
SAMPLE
= 300ksps
INTERNAL REFERENCE
EXTERNAL REFERENCE