MAX11626 Datasheet, PDF (11/22 Pages) Maxim Integrated Products – 12-Bit, 300ksps ADCs with FIFO and Internal Reference

12-Bit, 300ksps ADCs
with FIFO and Internal Reference
CS
SCLK
DIN
DOUT
t_CSS0
t_CH
t_CL
t_DH
t_DS
t_DOE
t_CP
t_DOT
t_CSH1
t_CSH0
t_CSS1
t_DOD
Figure 1. Detailed Serial-Interface Timing Diagram
CS
DIN
SCLK
SERIAL
INTERFACE
DOUT
OSCILLATOR
CONTROL
EOC
CNVST
AIN1
AIN2
AIN15
REF
T/H
12-BIT
SAR
ADC
FIFO AND
ACCUMULATOR
INTERNAL
REFERENCE
MAX11626–MAX11629/MAX11632/MAX11633
Figure 2. Functional Diagram
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 single-
ended inputs. Data is converted from analog voltage
sources in a variety of channel and data-acquisition con-
figurations. 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 internal
architecture. The MAX11632/MAX11633 have 16 sin-
gle-ended analog input channels. The MAX11628/
MAX11629 have 8 single-ended analog input channels.
The MAX11626/MAX11627 have 4 single-ended analog
input channels.
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