MP3274SG datasheet(8/16 Pages) EXAR

Part #	MP3274SG

Description	Fault Protected 32 Channel, 12-Bit Data Acquisition Subsystem

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Manufacturer	EXAR [Exar Corporation]

Direct Link	http://www.exar.com

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MP3274

8

Rev. 4.00

CS

WR

ADDRESS

Figure 1. Timing for ADC Channel Select Start Conversion

t 1

STL

ADEN

STS

DB0-DB11

RD = 0

DB0-DB11

RD = 1

HIGH Z

Previous ADC Data

New ADC Data

t 2

t 3

t 4

t 5

t 6

t 7

t 8

t 9

t 11

10

t

t 12

t 14

t 13

Table 3. ADC Read Timing

(

See Figure 2.)

25

°C

Tmin to

Tmax

Limits

Comments/Test Conditions

CS to RD Set-Up Time

t15

0

ns min

CS to RD Hold Time

t16

0

ns min

RD to Data Valid Delay

t17

100

150

ns max

Load ckt of

Figure 3., CL = 20 pF

150

200

ns max

Load ckt of

Figure 3., CL = 100 pF

Bus Relinquish Time after RD

t18

100

150

ns max

Load ckt of

Figure 4.

High

RD Pulse Width

t19

100

150

ns min

ADC Read Timing

Time

Interval

CS

RD

DATA

Figure 2. Timing for ADC Read

t 15

t 18

t 19

t 16

t

Valid

17

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