MAX1204_12 Datasheet, PDF (20/23 Pages) Maxim Integrated Products – 5V, 8-Channel, Serial, 10-Bit ADC with 3V Digital Interface

MAX1204
5V, 8-Channel, Serial, 10-Bit ADC
with 3V Digital Interface
OUTPUT CODE
11 . . . 111
11 . . . 110
11 . . . 101
FULL-SCALE
TRANSITION
FS = +4.096V
1 LSB = ^FS
1024
00 . . . 011
00 . . . 010
00 . . . 001
00 . . . 000
012 3
INPUT VOLTAGE (LSBs)
FS
FS - 3/2 LSB
Figure 15. Unipolar Transfer Function, 4.096V = Full Scale
+5V
100kΩ
510kΩ
24kΩ
0.01µF
MAX1204
REFADJ
12
Figure 17. Reference-Adjust Circuit
+5V
R* = 10Ω
SUPPLIES
-5V
+3V GND
OUTPUT CODE
011 . . . 111
011 . . . 110
000 . . . 010
000 . . . 001
000 . . . 000
111 . . . 111
111 . . . 110
111 . . . 101
FS = ^+4.096V
2
1 LSB = ^+4.096V
1024
100 . . . 001
100 . . . 000
-FS
0V
INPUT VOLTAGE (LSBs)
+FS - 1 LSB
Figure 16. Bipolar Transfer Function, ±4.096V/2 = Full Scale
20
V_DD
GND
V_SS V_L
+3V DGND
MAX1204
DIGITAL
CIRCUITRY
*OPTIONAL
Figure 18. Power-Supply Grounding Connection
Maxim Integrated