Rainbow Electronics MAX1448 - Manual (Page 9)

MAX1448
10-Bit, 80Msps, Single +3.0V, Low-Power
ADC with Internal Reference
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Pin Description
PIN NAME FUNCTION
1 REFN
Lower Reference. Conversion range is ±(V
REFP - V REFN ). Bypass to GND with a >0.1µF
capacitor.
2 COM Common-Mode Voltage Output. Bypass to GND with a >0.1µF capacitor.
3, 9, 10 V DD
Analog Supply Voltage. Bypass to GND with a capacitor combination of 2.2µF in parallel with
0.1µF.
4, 5, 8, 11,
14, 30
GND Analog Ground
6 IN+ Positive Analog Input. For single-ended operation, connect signal source to IN+.
7 IN- Negative Analog Input. For single-ended operation, connect IN- to COM.
12 CLK Conversion Clock Input
13 PD
Power-Down Input
High: power-down mode
Low: normal operation
15 OE
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 OV DD
Output Driver Supply Voltage. Bypass to GND with a capacitor combination of 2.2µF in
parallel with 0.1µF.
22 T.P. Test Point. Do not connect.
23 OGND Output Driver Ground
24–28 D4–D0 Three-State Digital Outputs D4–D0. D0 is the LSB.
29 REFOUT
Internal Reference Voltage Output. May be connected to REFIN through a resistor or a
resistor-divider.
31 REFIN Reference Input. V REFIN = 2 × (V
REFP - V REFN ). Bypass to GND with a >0.1µF capacitor.
32 REFP
Upper Reference. Conversion range is ±(V
REFP - V REFN ). Bypass to GND with a >0.1µF
capacitor.