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ADS1118IDGST Datasheet(PDF) 6 Page - Texas Instruments

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Part No. ADS1118IDGST
Description  Ultra-Small, Low-Power, SPI-Compatible, 16-Bit Analog-to-Digital Converter and Temperature Sensor with Internal Reference
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Maker  TI1 [Texas Instruments]
Homepage  http://www.ti.com
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ADS1118IDGST Datasheet(HTML) 6 Page - Texas Instruments

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SCLK
CS
DIN
DOUT
t
SCLK
t
CSSC
t
SPWH
t
DIHD
t
SPWL
t
CSDOZ
t
DOHD
t
DOPD
t
SCCS
t
SCSC
t
CSH
t
CSDOD
t
DIST
Hi-Z
Hi-Z
ADS1118
SBAS457A
– OCTOBER 2010 – REVISED JULY 2011
www.ti.com
SPI TIMING CHARACTERISTICS
Figure 1. Serial Interface Timing
TIMING REQUIREMENTS: SERIAL INTERFACE TIMING
At TA = –40°C to +125°C and VDD = 2V to 5.5V, unless otherwise noted.
SYMBOL
DESCRIPTION
MIN
MAX
UNIT
tCSSC
CS low to first SCLK: setup time(1)
100
ns
tSCLK
SCLK period
250
ns
tSPWH
SCLK pulse width: high
100
ns
100
ns
tSPWL
SCLK pulse width: low(2)
28
ms
tDIST
Valid DIN to SCLK falling edge: setup time
50
ns
tDIHD
Valid DIN to SCLK falling edge: hold time
50
ns
tDOPD
SCLK rising edge to valid new DOUT: propagation delay(3)
50
ns
tDOHD
SCLK rising edge to DOUT invalid: hold time
0
ns
tCSDOD
CS low to DOUT driven: propagation delay
100
ns
tCSDOZ
CS high to DOUT Hi-Z: propagation delay
100
ns
tCSH
CS high pulse
200
ns
tSCCS
Final SCLK falling edge to CS high
100
ns
(1)
CS can be tied low.
(2)
Holding SCLK low longer than 28ms resets the SPI interface.
(3)
DOUT load = 20pF || 100k
Ω to DGND.
6
Copyright
© 2010–2011, Texas Instruments Incorporated


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