AD7665 Analog Devices, AD7665 Datasheet - Page 4

• Manufacturer Part Number: AD7665
• Manufacturer: Analog Devices

Specifications of AD7665

• Resolution (bits): 16bit
• # Chan: 1
• Sample Rate: 570kSPS
• Interface: Par,Ser,SPI
• Analog Input Type: Diff-Bip,Diff-Uni
• Ain Range: Bip (Vref),Bip (Vref) x 2,Bip (Vref) x 4,Uni (Vref),Uni (Vref) x 2,Uni (Vref) x 4
• Adc Architecture: SAR
• Pkg Type: CSP,QFP

AD7665
TIMING SPECIFICATIONS
Parameter
Refer to Figures 19 and 21 (Slave Serial Interface Modes)
NOTES
1
2
3
Specifications subject to change without notice.
DIVSCLK[1]
DIVSCLK[0]
SYNC to SCLK First Edge Delay Minimum
Internal SCLK Period Minimum
Internal SCLK Period Maximum
Internal SCLK HIGH Minimum
Internal SCLK LOW Minimum
SDOUT Valid Setup Time Minimum
SDOUT Valid Hold Time Minimum
SCLK Last Edge to SYNC Delay Minimum
BUSY HIGH Width Maximum (Warp)
BUSY HIGH Width Maximum (Normal)
BUSY HIGH Width Maximum (Impulse)
In Warp Mode only, the maximum time between conversions is 1 ms, otherwise, there is no required maximum time.
In Serial Interface Modes, the SYNC, SCLK, and SDOUT timings are defined with a maximum load C
In Serial Master Read During Convert Mode. See Table II for Master Read after Convert Mode.
Refer to Figures 17 and 18 (Master Serial Interface Modes)
CS LOW to SYNC Valid Delay
CS LOW to Internal SCLK Valid Delay
CS LOW to SDOUT Delay
CNVST LOW to SYNC Delay (Read during Convert)
SYNC Asserted to SCLK First Edge Delay
Internal SCLK Period
Internal SCLK HIGH
Internal SCLK LOW
SDOUT Valid Setup Time
SDOUT Valid Hold Time
SCLK Last Edge to SYNC Delay
CS HIGH to SYNC HI-Z
CS HIGH to Internal SCLK HI-Z
CS HIGH to SDOUT HI-Z
BUSY HIGH in Master Serial Read after Convert
CNVST LOW to SYNC Asserted Delay
SYNC Deasserted to BUSY LOW Delay
External SCLK Setup Time
External SCLK Active Edge to SDOUT Delay
SDIN Setup Time
SDIN Hold Time
External SCLK Period
External SCLK HIGH
External SCLK LOW
(Warp Mode/Normal Mode/Impulse Mode)
(Warp Mode/Normal Mode/Impulse Mode)
Master Serial Read after Convert
3
3
3
3
3
Table II. Serial Clock Timings in Master Read after Convert
3
(continued)
3
3
t
t
t
t
t
t
t
t
t
t
t
18
19
19
20
21
22
23
24
28
28
28
2
–4–
0
0
4
25
40
15
9.5
4.5
2
3
1.5
1.75
2
Symbol
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
0
1
20
50
70
25
24
22
4
60
2
2.25
2.5
Min
4
25
15
9.5
4.5
2
3
5
3
5
5
25
10
10
L
of 10 pF; otherwise, the load is 60 pF maximum.
1
0
20
100
140
50
49
22
30
140
3
3.25
3.5
Typ
25/275/525
See Table II
0.75/1/1.25
25
1
1
20
200
280
100
99
22
90
300
5.25
5.5
5.75
Max
10
10
10
40
10
10
10
16
ns
Unit
ns
ns
ns
ns
ns
ns
ns
µs
µs
µs
REV.
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
µs
µs
ns
ns
ns
ns
ns
ns
ns
ns
C