Datasheet
MAX11618–MAX11621/MAX11624/MAX11625
10-Bit, 300ksps ADCs
with FIFO and Internal Reference
10 ______________________________________________________________________________________
Pin Description
PIN
MAX11618
MAX11619
(4 CHANNELS)
MAX11620
MAX11621
(8 CHANNELS)
MAX11624
MAX11625
(16 CHANNELS)
NAME FUNCTION
1–4 — — AIN0–AIN3 Analog Inputs
5, 6, 7 — — N.C. No Connection. Not internally connected.
— — 1–15 AIN0–AIN14 Analog Inputs
— 1–7 — AIN0–AIN6 Analog Inputs
—— 16CNVST/AIN15
Active-Low Conversion Start Input/Analog Input 15. See
Table 3 for details on programming the setup register.
—8 —CNVST/AIN7
Active-Low Conversion Start Input/Analog Input 7. See Table
3 for details on programming the setup register.
8——CNVST
Active-Low Conversion Start Input. See Table 3 for details on
programming the setup register.
9 9 17 REF Reference Input. Bypass to GND with a 0.1µF capacitor.
10 10 18 GND Ground
11 11 19 V
DD
Power Input. Bypass to GND with a 0.1µF capacitor.
12 12 20 CS
Active-Low Chip-Select Input. When CS is low, the serial
interface is enabled. When CS is high, DOUT is high
impedance.
13 13 21 SCLK
Serial Clock Input. Clocks data in and out of the serial
interface (duty cycle must be 40% to 60%). See Table 3 for
details on programming the clock mode.
14 14 22 DIN
Serial Data Input. DIN data is latched into the serial interface
on the rising edge of SCLK.
15 15 23 DOUT
S er i al D ata Outp ut. D ata i s cl ocked out on the fal l i ng ed g e of
S C LK. H i g h i m p ed ance w hen CS i s connected to V
D D
.
16 16 24 EOC End of Conversion Output. Data is valid after EOC pulls low.
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
AIN0
TOP VIEW
EOC
DOUT
DIN
CS
SCLK
V
DD
GND
REF
MAX11618–
MAX11621
QSOP
AIN1
AIN2
AIN5 (N.C.)
AIN3
AIN4 (N.C.)
AIN6 (N.C.)
AIN7/(CNVST)
() MAX11618/MAX11619 ONLY
+
24
23
22
21
20
19
18
17
2
1
3
4
5
6
7
8
EOC
DOUT
DIN
CS
AIN3
AIN2
AIN1
AIN0
SCLK
V
DD
GND
REFAIN7
AIN6
AIN5
AIN4
16
15
14
13
9
10
11
12
AIN14
CNVST/AIN15
AIN13
AIN12 AIN11
AIN10
AIN9
AIN8
QSOP
MAX11624–
MAX11625
+
Pin Configurations