MAX11129_12 Datasheet, PDF (12/36 Pages) Maxim Integrated Products – 3Msps, Low-Power, Serial 12-/10-Bit,8-/16-Channel ADCs

MAX11129–MAX11132
3Msps, Low-Power, Serial 12-/10-Bit,
8-/16-Channel ADCs
Pin Description
MAX11129
MAX11131
(16 CHANNEL)
MAX11130
MAX11132
(8 CHANNEL)
NAME
FUNCTION
26, 27, 28, 1–11
—
12
—
13
—
14, 16
—
26, 27, 28, 1–5
—
12
—
13
6–11, 14, 16
AIN0–AIN13 Analog Inputs
AIN0–AIN7 Analog Inputs
CNVST/ _{Active-Low Conversion Start Input/Analog Input 14}
AIN14
CNVST Active-Low Conversion Start Input
REF-/AIN15 External Differential Reference Negative Input /Analog Input 15
REF- External Differential Reference Negative Input
GND Ground
15
15
REF+
External Positive Reference Input. Apply a reference voltage at REF+. Bypass to
GND with a 0.47FF capacitor.
17, 18
17, 18
V_DD
Power-Supply Input. Bypass to GND with a 10FF in parallel with a 0.1FF
capacitors.
19
19
SCLK Serial Clock Input. Clocks data in and out of the serial interface
20
20
CS
Active-Low Chip Select Input. When CS is low, the serial interface is enabled.
When CS is high, DOUT is high impedance or three-state.
21
21
DIN
Serial Data Input. DIN data is latched into the serial interface on the rising edge
of SCLK.
22
22
DGND Digital I/O Ground
23
23
OVDD
Interface Digital Power-Supply Input. Bypass to GND with a 10FF in parallel with
a 0.1FF capacitors.
24
24
DOUT ^{Serial Data Output. Data is clocked out on the falling edge of SCLK. When CS is}
high, DOUT is high impedance or three-state.
25
25
EOC End of Conversion Output. Data is valid after EOC pulls low (internal clock mode only).
—
—
EP
Exposed Pad. Connect EP directly to GND plane for guaranteed performance.
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