Datasheet

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SBAS314BAPRIL 2004 − REVISED JANUARY 2009
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14
SYMBOL DESCRIPTION MIN MAX UNITS
t
2
DRDY/DOUT low to first SCLK rising edge 0 ns
t
3
SCLK positive or negative pulse width 100 ns
t
4
SCLK rising edge to new data bit valid: propagation delay 50 ns
t
5
SCLK rising edge to old data bit valid: hold time 0 ns
t
6
(1)
Data updating; no readback allowed 48 µs
t
7
(1)
Conversion time (1/data rate) 8.32 8.32 ms
(1)
Values given for f
CLK
= 2MHz. For different f
CLK
frequencies, scale proportional to CLK period.
DRDY/DOUT 23 22 21
124
0
LSBMSB
Data
Data Ready
SCLK
t
2
t
7
t
3
t
3
t
6
New Data Ready
t
4
t
5
Figure 25. Data Retrieval Timing
23
12425
22 21 0
Data
25th SCLK to Force DRDY/DOUT High
Data Ready
New Data Ready
DRDY/DOUT
SCLK
Figure 26. Data Retrieval with DRDY/DOUT Forced High Afterwards