EVAL-AD7490CBZ Analog Devices Inc, EVAL-AD7490CBZ Datasheet - Page 15
![BOARD EVAL CONTROL FOR AD7490](/photos/9/11/91124/eval-ad7490cbz_sml.jpg)
EVAL-AD7490CBZ
Manufacturer Part Number
EVAL-AD7490CBZ
Description
BOARD EVAL CONTROL FOR AD7490
Manufacturer
Analog Devices Inc
Datasheet
1.AD7490BRUZ.pdf
(28 pages)
Specifications of EVAL-AD7490CBZ
Number Of Adc's
1
Number Of Bits
12
Sampling Rate (per Second)
1M
Data Interface
Serial
Inputs Per Adc
16 Single Ended
Input Range
0 ~ 5 V
Power (typ) @ Conditions
12.5mW @ 1MSPS, 5 V
Voltage Supply Source
Single Supply
Operating Temperature
-40°C ~ 85°C
Utilized Ic / Part
AD7490
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Figure 14 shows how a sequence of consecutive channels can be
converted on without having to program the Shadow register or
write to the part on each serial transfer. Again, to exit this mode
of operation and revert back to the normal mode of operation
CS
CS
CS
Figure 14. SEQ Bit = 1, SHADOW Bit = 1 Flowchart
DIN: WRITE TO CONTROL REGISTER,
WRITE BIT = 1,
SELECT CODING, RANGE, AND POWER MODE
SELECT CHANNEL ADD3 TO ADD0 FOR
CONVERSION,
SEQ = 1 SHADOW = 1
DOUT: CONVERSION RESULT FROM
CHANNEL 0
CONTINUOUSLY CONVERTS ON A
CONSECUTIVE SEQUENCE OF CHANNELS
FROM CHANNEL 0 UP TO AND INCLUDING
THE PREVIOUSLY SELECTED ADD3 TO ADD0
IN THE CONTROL REGISTER
CONTINUOUSLY CONVERTS ON THE
SELECTED SEQUENCE OF CHANNELS BUT
WILL ALLOW RANGE, CODING, AND SO ON,
TO CHANGE IN THE CONTROL REGISTER
WITHOUT INTERRUPTING THE SEQUENCE
PROVIDED, SEQ = 1, SHADOW = 0
DUMMY CONVERSIONS
DIN = ALL 1s
Rev. C | Page 15 of 28
POWER ON
WRITE BIT = 1,
SEQ = 1,
SHADOW = 0
of a multichannel ADC (as outlined in Figure 12), ensure that
the WRITE = 1 and SEQ = SHADOW = 0 on the next serial
transfer.
WRITE
BIT = 0
WRITE BIT = 1,
SEQ = 1,
SHADOW = 0
AD7490