MP3275 데이터 시트보기 (PDF) - Exar Corporation

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MP3275

Fault Protected 16 Channel, 12-Bit Data Acquisition Subsystem

Exar Corporation 

MP3275

WR

ADDRESS

t5

t3

t4

ADEN

STL

STS

SDO

RD = 0

SDO

RD = 1

t6

t7

t8

t 12

Previous ADC Data

HIGH Z

t9

t 10

t 11

t 13

t 14

New ADC Data

Figure 1. Timing for ADC Channel Select Start Conversion

ADC Read Timing

RD to Data Valid Delay

SDO Relinquish Time after

RD High

RD Pulse Width

Time

Interval 25°C

Tmin to

Tmax

t17

100

150

150

200

t18

100

150

t19

100

150

Limits

ns max

ns max

ns max

ns min

Comments/Test Conditions

Load ckt of Figure 3., CL = 20 pF

Load ckt of Figure 3., CL = 100 pF

Load ckt of Figure 4.

Table 3. ADC Read Timing

(See Figure 2.)

Rev. 4.00

RD

DATA

Valid

t 17

t 18

Figure 2. Timing for ADC Read

8

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