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MAX11634 Datasheet(PDF) 16 Page - Maxim Integrated Products

Part No. MAX11634
Description  12-Bit, 300ksps ADCs with Differential
Download  24 Pages
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Maker  MAXIM [Maxim Integrated Products]
Homepage  http://www.maxim-ic.com
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MAX11634 Datasheet(HTML) 16 Page - Maxim Integrated Products

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12-Bit, 300ksps ADCs with Differential
Track/Hold, and Internal Reference
16
______________________________________________________________________________________
Table 3. Setup Register*
BIT NAME
BIT
FUNCTION
7 (MSB)
Set to 0 to select setup register
6
Set to 1 to select setup register
CKSEL1
5
Clock mode and
CNVST configuration. Resets to 1 at power-up.
CKSEL0
4
Clock mode and
CNVST configuration
REFSEL1
3
Reference mode configuration
REFSEL0
2
Reference mode configuration
DIFFSEL1
1
Unipolar/bipolar mode register configuration for differential mode
DIFFSEL0
0 (LSB)
Unipolar/bipolar mode register configuration for differential mode
CKSEL1
CKSEL0
CONVERSION CLOCK
ACQUISITION/SAMPLING
CNVST CONFIGURATION
0
0
Internal
Internally timed
CNVST
0
1
Internal
Externally timed through
CNVST
CNVST
1
0
Internal
Internally timed
AIN7*
1
1
External (4.8MHz max)
Externally timed through SCLK
AIN7*
REFSEL1
REFSEL0
VOLTAGE REFERENCE
AutoShutdown
REF- CONFIGURATION
0
0
Internal
Reference off after scan; need
wake-up delay
AIN6
0
1
External single-ended
Reference off; no wake-up delay
AIN6
1
0
Internal
Reference always on; no wake-
up delay
AIN6
1
1
External differential
Reference off; no wake-up delay
REF-*
DIFFSEL1
DIFFSEL0
FUNCTION
0
0
No data follows the setup byte. Unipolar mode and bipolar mode registers remain unchanged.
0
1
No data follows the setup byte. Unipolar mode and bipolar mode registers remain unchanged.
1
0
1 byte of data follows the setup byte and is written to the unipolar mode register.
1
1
1 byte of data follows the setup byte and is written to the bipolar mode register.
*
See below for bit details.
*
The MAX11634/MAX11635 have a dedicated CNVST pin.
*
The MAX11634/MAX11635 have a dedicated REF- pin.


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