ADS1018IDGST datasheet(5/37 Pages) TI1

Part #	ADS1018IDGST

Description	Ultra-Small, Low-Power, SPI??Compatible, 12-Bit, Analog-to-Digital Converter and Temperature Sensor with Internal Reference

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Manufacturer	TI1 [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

ADS1018

www.ti.com

SBAS526B – NOVEMBER 2012 – REVISED OCTOBER 2013

PARAMETER MEASUREMENT INFORMATION

SPI TIMING CHARACTERISTICS

Figure 1. Serial Interface Timing

TIMING REQUIREMENTS: SERIAL INTERFACE TIMING(1)

PARAMETER

MIN

MAX

UNIT

tCSSC

CS low to first SCLK: setup time(2)

100

ns

tSCLK

SCLK period

250

ns

tSPWH

SCLK pulse width: high

100

ns

100

ns

tSPWL

SCLK pulse width: low(3)

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(4)

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)

At TA = –40°C to +125°C and VDD = 2.0 V to 5.5 V, unless otherwise noted.

(2)

CS can be tied low.

(3)

Holding SCLK low longer than 28 ms resets the SPI interface.

(4)

DOUT load = 20 pF || 100 k

Ω to GND.

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