MAX11634 Datasheet, PDF (11/24 Pages) Maxim Integrated Products – 12-Bit, 300ksps ADCs with Differential

12-Bit, 300ksps ADCs with Differential
Track/Hold, 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
AIN0
AIN1
T/H
12-BIT
SAR
ADC
FIFO AND
ACCUMULATOR
AIN7
REF-
REF+
MAX11634–MAX11637
INTERNAL
REFERENCE
Figure 2. Functional Diagram
Detailed Description
The MAX11634–MAX11637 are low-power, serial-out-
put, multichannel ADCs for temperature-control,
process-control, and monitoring applications. These
12-bit ADCs have internal track and hold (T/H) circuitry
that supports single-ended and fully differential 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
MAX11634–MAX11637 internal architecture. The
MAX11636/MAX11637 have eight single-ended analog
input channels or four differential channels. The
MAX11634/MAX11635 have four single-ended analog
input channels or two differential channels.
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