AD7621 Analog Devices, AD7621 Datasheet - Page 23

• Manufacturer Part Number: AD7621
• Description: 16-Bit, 2 LSB INL, 3 MSPS PulSAR® ADC
• Manufacturer: Analog Devices

Specifications of AD7621

• Resolution (bits): 16bit
• # Chan: 1
• Sample Rate: 3MSPS
• Interface: Byte,Par,Ser,SPI
• Analog Input Type: Diff-Uni
• Ain Range: (2Vref) p-p
• Adc Architecture: SAR
• Pkg Type: CSP,QFP

SDOUT
CS, RD
CNVST
SDOUT
CS, RD
CNVST
BUSY
SYNC
SCLK
BUSY
SYNC
SCLK
t
16
t
3
t
t
14
15
t
t
t
t
14
15
16
X
Figure 38. Master Serial Data Timing for Reading (Read Previous Conversion During Convert)
17
t
t
29
t
22
18
t
EXT/INT = 0
1
EXT/INT = 0
Figure 37. Master Serial Data Timing for Reading (Read After Convert)
t
D15
3
t
1
20
t
X
t
19
22
t
21
t
20
D14
t
2
23
D15
1
t
t
18
19
RDC/SDIN = 1
Rev. 0 | Page 23 of 32
RDC/SDIN = 0
3
t
D14
21
t
2
23
t
28
3
14
D2
INVSCLK = INVSYNC = 0
INVSCLK = INVSYNC = 0
14
D2
D1
15
15
D1
16
t
24
16
t
30
D0
t
D0
24
t
t
25
26
t
t
t
t
25
26
27
27
AD7621