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DDC232CGXGR Datasheet(数据表) 7 Page - Texas Instruments

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部件型号  DDC232CGXGR
说明  32-Channel, Current-Input Analog-to-Digital Converter
下载  34 Pages
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制造商  TI1 [Texas Instruments]
网页  http://www.ti.com
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DDC232CGXGR Datasheet(HTML) 7 Page - Texas Instruments

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Serial
Interface
DVALID
DCLK
DOUT
DIN
Configuration
and
Control
IN2
IN1
DGND
AGND
IN4
IN3
IN30
IN29
DS
ADC
IN32
IN31
CLK
CONV
DIN_CFG
CLK_CFG
RESET
Dual
Switched
Integrator
Dual
Switched
Integrator
Dual
Switched
Integrator
Dual
Switched
Integrator
Dual
Switched
Integrator
Dual
Switched
Integrator
Dual
Switched
Integrator
Dual
Switched
Integrator
VREF
DVDD
AVDD
0.1 F
m
0.1 F
m
0.1 F
m
DS
ADC
DS
ADC
DS
ADC
DDC232
www.ti.com
SBAS331D – AUGUST 2004 – REVISED APRIL 2010
THEORY OF OPERATION
GENERAL DESCRIPTION
converters via multiplexers. With the DDC232 in the
The block diagram of the DDC232 is shown in
continuous integration mode, the output of the
Figure 2. The device contains 32 identical input
integrators from one side of the inputs will be digitized
channels
that
perform
the
function
of
while the other 32 integrators are in the integration
current-to-voltage
integration
followed
by
a
mode. This integration and A/D conversion process is
multiplexed A/D conversion. Each input has two
controlled by the system clock, CLK. The results from
integrators so that the current-to-voltage integration
side A and side B of each signal input are stored in a
can be continuous in time. The output of the 64
serial output shift register. The DVALID output goes
integrators are switched to 16 delta-sigma (
∆Σ)
low when the shift register contains valid data.
Figure 2. DDC232 Block Diagram
Copyright © 2004–2010, Texas Instruments Incorporated
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