參數(shù)資料
型號： ADS8517IDW
廠商： TEXAS INSTRUMENTS INC
元件分類： ADC
英文描述： 1-CH 16-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL/PARALLEL ACCESS, PDSO28
封裝： GREEN, PLASTIC, SOIC-28
文件頁數(shù)： 11/38頁
文件大?。?/td> 948K
代理商： ADS8517IDW
1
2
tsu1
CS
R/C
External
DATACLK
CS Set Low, Discontinuous Ext DATACLK
tsu1
R/C
CS
External
DATACLK
R/C Set Low, Discontinuous Ext DATACLK
tsu2
CS
R/C
tsu3
BUSY
External
DATACLK
CS Set Low, Discontinuous Ext DATACLK
td9
www.ti.com ................................................................................................................................................. SLAS527A – SEPTEMBER 2008 – REVISED JUNE 2009
Table 6. Timing Requirements (TA = –40°C to +85°C)
PARAMETER
MIN
TYP
MAX
UNIT
tw1
Pulse duration, convert
0.04
5
s
td1
Delay time, BUSY from R/C low
20
85
ns
tw2
Pulse duration, BUSY low
2.3
2.5
s
td2
Delay time, BUSY, after end of conversion
90
ns
td3
Delay time, aperture
40
ns
tconv
Conversion time
2.0
2.2
2.4
s
tacq
Acquisition time
2.6
2.7
s
tconv + tacq Cycle time
5
s
td4
Delay time, R/C low to internal DATACLK output
171
ns
tc1
Cycle time, internal DATACLK
92
96
98
ns
td5
Delay time, data valid to internal DATACLK high
2
3.5
ns
td6
Delay time, data valid after internal DATACLK low
41
43
ns
tc2
Cycle time, external DATACLK
35
ns
tw3
Pulse duration, external DATACLK high
15
ns
tw4
Pulse duration, external DATACLK low
15
ns
tsu1
Setup time, R/C rise/fall to external DATACLK high
15
ns
tsu2
Setup time, R/C transition to CS transition
10
ns
td8
Delay time, data valid from external DATCLK high
2
25
40
ns
td9
Delay time, CS rising edge to external DATACLK rising edge
15
ns
td10
Delay time, previous data available after CS, R/C low
1.8
2.2
s
tsu3
Setup time, BUSY transition to first external DATACLK
5
ns
td11
Delay time, final external DATACLK to BUSY rising edge
825
ns
tsu4
Setup time, TAG valid before rising edge of DATACLK
2
ns
th1
Hold time, TAG valid after rising edge of DATACLK
2
ns
Figure 32. Critical Timing Parameters
Copyright 2008–2009, Texas Instruments Incorporated
19
Product Folder Link(s): ADS8517
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