MAX1448 Datasheet, PDF (15/21 Pages) Maxim Integrated Products – 10-Bit, 80Msps, Single 3.0V, Low-Power ADC with Internal Reference

10-Bit, 80Msps, Single 3.0V, Low-Power
ADC with Internal Reference
300Ω
300Ω
5V
0.1µF
0.1µF
MAX4108
600Ω
-5V
0.1µF
600Ω
5V
INPUT
0.1µF
MAX4108
0.1µF
-5V
300Ω
300Ω
0.1µF
600Ω
300Ω
300Ω
5V
0.1µF
MAX4108
-5V
0.1µF
600Ω
LOWPASS FILTER
R_ISO
50Ω
C_IN
22pF
IN+
MAX1448
COM
LOWPASS FILTER
IN-
R_ISO
50Ω
C_IN
22pF
Figure 7. Typical Application Circuit Using the Internal Reference
25Ω
22pF
0.1µF
V_IN
3 T1 4
N.C. ₅
2
2.2µF
1
6
MINI-CIRCUITS
ADT1-1WT
25Ω
0.1µF
22pF
IN+
MAX1448
COM
IN-
REFP
VIN
0.1µF
1kΩ
RISO
MAX4108
100Ω
CIN
1kΩ
RISO = 50Ω
CIN = 22pF
100Ω
REFN
0.1µF
RISO
CIN
IN+
MAX1448
COM
IN-
Figure 8. Using a Transformer for AC Coupling
Figure 9. Single-Ended AC-Coupled Input
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