AD7655 Analog Devices, AD7655 Datasheet - Page 23

• 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

SDOUT
CNVST
SDOUT
BUSY
SCLK
EOC
BUSY
SCLK
SDIN
EOC
CS
CS
t
10
t
23
t
t
38
23
Figure 32. Slave Serial Data Timing for Reading (Read Previous Conversion During Convert)
t
3
t
t
40
38
X
X
t
Figure 31. Slave Serial Data Timing for Reading (Read After Convert)
1
43
t
1
43
CH A D15
X CH A
t
t
42
CH A
D15
42
t
D15
44
t
t
44
41
EXT/INT = 1
EXT/INT = 1
2
2
t
CH A D14
X CH A
11
CH A
D14
D14
t
t
39
39
3
3
CH A D13
X CH A
CH A
D13
Rev. B | Page 23 of 28
D13
INVSCLK = 0
t
12
INVSCLK = 0
30
31
31
CH B D1
X CH B
CH B D1
D1
RD = 0
t
32
13
32
RD = 0
CH B D0
X CH B
D0
CH B D0
33
A/B = 1
X CH A
Y CH A
D15
D15
A/B = 1
34
X CH A
Y CH A
D14
D14
AD7655