MAX1449 Datasheet, PDF (9/18 Pages) Maxim Integrated Products – 10-Bit, 105Msps, Single +3.3V, Low-Power ADC with Internal Reference

10-Bit, 105Msps, Single +3.3V, Low-Power
ADC with Internal Reference
PIN
1
2
3, 9, 10
4, 5, 8, 11,
14, 30
6
7
12
13
15
NAME
REFN
COM
V_DD
GND
IN+
IN-
CLK
PD
OE
Pin Description
FUNCTION
Lower Reference. Conversion range is ±(V_REFP - V_REFN).
Bypass to GND with a > 0.1µF capacitor.
Common-Mode Voltage Output. Bypass to GND with a > 0.1µF capacitor.
Analog Supply Voltage. Bypass to GND with a capacitor combination of 2.2µF in parallel with 0.1µF.
Analog Ground
Positive Analog Input. For single-ended operation connect signal source to IN+.
Negative Analog Input. For single-ended operation connect IN- to COM.
Conversion Clock Input
Power Down Input.
High: Power-down mode
Low: Normal operation
Output Enable Input.
High: Digital outputs disabled
Low: Digital outputs enabled
16–20
D9–D5 Three-State Digital Outputs D9–D5. D9 is the MSB.
21
22
23
24–28
29
31
32
OV_DD
T.P.
OGND
Output Driver Supply Voltage. Bypass to GND with a capacitor combination of 2.2µF in parallel with
0.1µF.
Test Point. Do not connect.
Output Driver Ground
D4–D0 Three-State Digital Outputs D4–D0. D0 is the LSB.
REFOUT
REFIN
REFP
Internal Reference Voltage Output. May be connected to REFIN through a resistor or a resistor-
divider.
Reference Input. V_REFIN = 2 ✕ (V_REFP - V_REFN). Bypass to GND with a > 0.1µF capacitor.
Upper Reference. Conversion range is ±(V_REFP - V_REFN). Bypass to GND with a > 0.1µF capacitor.
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