AD7676 Просмотр технического описания (PDF) - Analog Devices
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AD7676 Datasheet PDF : 20 Pages
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AD7676
TIMING SPECIFICATIONS (–40؇C to +85؇C, AVDD = DVDD = 5 V, OVDD = 2.7 V to 5.25 V, unless otherwise noted.)
Parameter
Symbol
Min
Typ
Max
Refer to Figures 11 and 12
Convert Pulsewidth
t1
Time between Conversions
t2
CNVST LOW to BUSY HIGH Delay
t3
BUSY HIGH All Modes except in Master Serial Read
t4
Convert Mode
Aperture Delay
t5
End of Conversion to BUSY LOW Delay
t6
Conversion Time
t7
Acquisition Time
t8
RESET Pulsewidth
t9
Refer to Figures 13, 14, and 15 (Parallel Interface Modes)
CNVST LOW to DATA Valid Delay
t10
DATA Valid to BUSY LOW Delay
t11
Bus Access Request to DATA Valid
t12
Bus Relinquish Time
t13
Refer to Figures 16 and 17 (Master Serial Interface Modes)1
CS LOW to SYNC Valid Delay
t14
CS LOW to Internal SCLK Valid Delay
t15
CS LOW to SDOUT Delay
t16
CNVST LOW to SYNC Delay
t17
SYNC Asserted to SCLK First Edge Delay2
t18
Internal SCLK Period2
t19
Internal SCLK HIGH2
t20
Internal SCLK LOW2
t21
SDOUT Valid Setup Time2
t22
SDOUT Valid Hold Time2
t23
SCLK Last Edge to SYNC Delay2
t24
CS HIGH to SYNC HI-Z
t25
CS HIGH to Internal SCLK HI-Z
t26
CS HIGH to SDOUT HI-Z
t27
BUSY HIGH in Master Serial Read after Convert2
t28
CNVST LOW to SYNC Asserted Delay
t29
SYNC Deasserted to BUSY LOW Delay
t30
5
2
30
1.25
2
10
1.25
750
10
1.25
45
40
5
15
10
10
10
525
3
25
40
12
7
4
2
3
10
10
10
See Table I
1.25
25
Refer to Figures 18 and 19 (Slave Serial Interface Modes)
External SCLK Setup Time
t31
5
External SCLK Active Edge to SDOUT Delay
t32
3
18
SDIN Setup Time
t33
5
SDIN Hold Time
t34
5
External SCLK Period
External SCLK HIGH
t35
25
t36
10
External SCLK LOW
t37
10
NOTES
1In serial interface modes, the SYNC, SCLK, and SDOUT timings are defined with a maximum load CL of 10 pF; otherwise, the load is 60 pF maximum.
2In Serial Master Read during Convert Mode, see Table II.
Specifications subject to change without notice.
Unit
ns
µs
ns
µs
ns
ns
µs
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
µs
ns
ns
ns
ns
ns
ns
ns
ns
REV. B
–3–
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