Datasheet

______________________________________________________________________________________ 17
MAX11661–MAX11666
500ksps, Low-Power,
Serial 12-/10-/8-Bit ADCs
Typical Operating Characteristics (continued)
(MAX11665AUT+, T
A
= +25°C, unless otherwise noted.)
SOT23 TYPICAL OPERATING CHARACTERISTICS
SUPPLY CURRENT vs. TEMPERATURE
MAX11661 toc10
TEMPERATURE (°C)
I
VDD
(mA)
1109580655035205-10-25
1.3
1.4
1.5
1.6
V
DD
= 3.6V
V
DD
= 3V
V
DD
= 2.2V
1.2
-40 125
SIGNAL-TO-NOISE AND DISTORTION RATIO
(SINAD) vs. ANALOG INPUT FREQUENCY
MAX11661 toc08
f
IN
(kHz)
SINAD (dB)
20015010050
72
74
76
70
0 250
HISTOGRAM FOR 30,000 CONVERSIONS
MAX11661 toc12
DIGITAL CODE OUTPUT
CODE COUNT
2050204920482047
5000
10,000
15,000
20,000
25,000
30,000
35,000
0
2046
SIGNAL-TO-NOISE RATIO (SNR)
vs. SUPPLY VOLTAGE (V
DD
)
MAX11661 toc11
V
DD
(V)
SNR (dB)
3.43.23.02.82.62.4
72
73
74
75
71
2.2 3.6
FREQUENCY (kHz)
MAGNITUDE (dB)
20015010050
-100
-80
-60
-40
A
HD2
= - 88dB
-20
0
-120
0 250
100kHz SINE-WAVE INPUT
MAX11661 toc09
f
IN
= 99.4kHz
f
S
= 500ksps
V
DD
= 3V
THD vs. INPUT RESISTANCE
MAX11661 toc13
R
IN
(I)
THD (dB)
80604020
-95
-90
-85
-80
-75
f
S
= 500ksps
f
IN
= 250kHz
-100
0 100