Datasheet

MAX1444
10-Bit, 40Msps, 3.0V, Low-Power
ADC with Internal Reference
______________________________________________________________________________________ 15
MAX1444
T1
N.C.
V
IN
4
3
2
5
61
10pF
10pF
0.1μF
0.1μF
2.2μF
25Ω
25Ω
MINI-CIRCUITS
ADT1–1WT
IN-
IN+
COM
Figure 8. Using a Transformer for AC Coupling
MAX1444
0.1
μ
F
1k
Ω
1k
Ω

100
Ω
100Ω
C
IN
COM
C
IN
IN+
IN-
0.1
μ
F
R
ISO
R
ISO
REFP
REFN
R
ISO
= 50Ω
C
IN
= 22pF
V
IN
MAX4108
Figure 9. Single-Ended AC-Coupled Input
INPUT
300Ω
-5V
5V
0.1μF
0.1μF
0.1μF
C
IN
22pF
C
IN
22pF
R
ISO
50Ω
R
ISO
50Ω
-5V
600Ω
300Ω
300Ω
IN+
IN-
LOWPASS FILTER
COM
600Ω
5V
-5V
0.1μF
600Ω
300Ω
600Ω
300Ω
0.1μF
0.1μF
0.1μF
5V
0.1μF
300Ω
MAX4108
MAX1444
MAX4108
MAX4108
LOWPASS FILTER
Figure 7. Typical Application Circuit for Single-Ended to Differential Conversion