Datasheet

Detailed Description
The MAX11626–MAX11629/MAX11632/MAX11633 are
low-power, serial-output, multichannel ADCs with FIFO
capability for system monitoring, process-control, and
instrumentation applications. These 12-bit ADCs have
internal track and hold (T/H) circuitry supporting sin-
gleended inputs. Data is converted from analog voltage
sources in a variety of channel and data-acquisition
configurations. Microprocessor (μP) control is made easy
through a 3-wire SPI-/QSPI-/MICROWIRE-compatible
serial interface.
Figure 2 shows a simplified functional diagram of the
MAX11626–MAX11629/MAX11632/MAX11633 inter-
nal architecture. The MAX11632/MAX11633 have 16
single-ended analog input channels. The MAX11628/
MAX11629 have 8 single-ended analog input channels.
The MAX11626/MAX11627 have 4 single-ended analog
input channels.
Figure 1. Detailed Serial-Interface Timing Diagram
Figure 2. Functional Diagram
SCLK
DIN
DOUT
CS
t
DH
t
DOE
t
DS
t
CH
t
CL
t
CSS0
t
CP
t
CSH1
t
CSH0
t
CSS1
t
DOD
t
DOT
12-BIT
SAR
ADC
CONTROL
SERIAL
INTERFACE
OSCILLATOR
FIFO AND
ACCUMULATOR
T/H
CNVST
SCLK
CS
DIN
EOC
DOUT
AIN15
AIN1
AIN2
INTERNAL
REFERENCE
REF
MAX11626–MAX11629/MAX11632/MAX11633
MAX11626–MAX11629/
MAX11632/MAX11633
12-Bit, 300ksps ADCs
with FIFO and Internal Reference
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