ADS8201IBRGER datasheet(5/33 Pages) TI

Part #	ADS8201IBRGER

Description	2.2V to 5.5V,Low-Power, 12-Bit, 100kSPS, 8-Channel Data Acquisition System with PGA and SPI??Interface

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Manufacturer	TI [Texas Instruments]

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ADCDataReadyN

ADCConversionN

2t

(SamplingN)

OSC

t

(CONVST)

WL

PGA

Settling

ConversionN

ConversionDelay

PGA

Settling

SamplingN+1

N

N+1

CONVST

BUSY

INT

ADCState

t (CONVST - sync)

D

t

CD

t

(MinimumN+1)

TP

t

CONV

t (

)=40t

-

CONVST

,Minimum

D

OSC

t

ACQ

ADDataN+1Ready

ADDataNReady

1t

OSC

PGA

Settling

ConversionN

ConversionDelay

Idle

PGA

Settling

ConversionN+1

ConversionDelay

N

N+1

RecommendedAD

ReadWindow

ADReadMayCause

ConversionNoise

RecommendedAD

ReadWindow

UpdatingFIFO/ODRN

CONVST

INT

ADCState

SPIPort

22t

OSC

18t

+Idle

OSC

t (CS

SDO

-

)

D

t (SCLK - SDOVALID)

D

t

(Last SCLK

CS

-

)

SU

t (SDI -

)

SCLK

H

t

(SDI - SCLK)

SU

1

2

3

4

5

6

7

8

9

10

11

12

13

16

15

14

D15

D0

D1

D2

D3

D4

D5

D6

D7

D8

D9

D10

D11

D12

D13

D14

D15

D0

D1

D2

D3

D4

D5

D6

D7

D8

D9

D10

D11

D12

D13

D14

CS

SDI

SCLK

SDO

t (SCLK - SDOINVALID)

D

t (CS - SDOVALID)

D

t

(CS

SCLK1

-

)

SU

t

SH

t

SL

t

SP

ADS8201

www.ti.com

SLAS534B – JULY 2009 – REVISED MAY 2010

TIMING CHARACTERISTICS

All specifications typical at –40°C to +85°C, 2.2V < VA = VREF < 5.5V, and 2.2V < VD < 5.5V, unless otherwise

noted.

Figure 1. Convert Timing

Figure 2. Read Timing

Figure 3. SPI Convert Timing

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ADS8201IBRGER Datasheet(PDF) 5 Page - Texas Instruments

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