AD7655 Analog Devices, AD7655 Datasheet - Page 21

• Manufacturer Part Number: AD7655
• Manufacturer: Analog Devices

Specifications of AD7655

• Resolution (bits): 16bit
• # Chan: 4
• Sample Rate: 1MSPS
• Interface: Par,Ser,SPI
• Analog Input Type: SE-Uni
• Ain Range: Uni (Vref) x 2
• Adc Architecture: SAR
• Pkg Type: CSP,QFP

CNVST
SDOUT
CS, RD
CS, RD
CNVST
SDOUT
BUSY
SYNC
BUSY
SCLK
SYNC
SCLK
EOC
EOC
t
23
t
t
3
10
Figure 29. Master Serial Data Timing for Reading (Read Previous Conversion During Convert)
t
t
t
t
10
23
21
22
t
X
t
24
11
t
t
25
29
t
t
22
21
t
t
36
Figure 28. Master Serial Data Timing for Reading (Read After Convert)
EXT/INT = 0
1
t
t
CH A
12
D15
EXT/INT = 0
3
t
1
27
t
26
X
t
t
13
28
t
25
t
29
CH A
D14
t
2
30
t
11
CH A
1
D15
t
RDC/SDIN = 1
26
t
RDC/SDIN = 0
28
Rev. B | Page 21 of 28
CH A
2
D14
t
30
16
CH A D0
t
35
t
16
27
CH A
t
D0
12
INVSCLK = INVSYNC = 0
t
26
INVSCLK = INVSYNC = 0
CH B
D15
1
CH B
17
D15
CH B
D14
t
2
CH B
31
13
D1
32
A/B = 1
t
31
CH B
A/B = 1
D0
16
CH B D0
t
37
t
31
t
t
t
t
t
t
33
34
33
34
32
32
AD7655