DS1023 Dallas Semiconducotr, DS1023 Datasheet - Page 7
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DS1023
Manufacturer Part Number
DS1023
Description
8-Bit Programmable Timing Element
Manufacturer
Dallas Semiconducotr
Datasheet
1.DS1023.pdf
(16 pages)
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DELAY LINE DETAIL (CONCEPTUAL) - DS1023-25, DS1023-50, DS1023-100
Figure 7
PART NUMBER TABLE Table 1
1. In “Normal” mode (MS=0). Measured with respect to REF output. The minimum delay time is zero
2. In PWM mode (MS=1). The minimum output pulse width for reliable operation is 5 ns; programmed
3. This is the deviation from a straight line drawn between the step zero value and the maximum
OSCILLATOR CONFIGURATION Table 2
4. Step size in output period (in ns).
5. Maximum output frequency depends on the actual step zero delay value, worst case values are shown
DS1023-025
DS1023-050
DS1023-100
DS1023-200
DS1023-500
NUMBER
(or less, by 1.5 ns typically)
values less than this may produce reduced output voltage levels or no output at all.
programmed delay time.
in the table. The output period is given by: 2 * t
PART NUMBER
PART
DS1023-025
DS1023-050
DS1023-100
DS1023-200
DS1023-500
DELAYS RANGES AND TOLERANCE (all times measured in ns)
STEP
SIZE
0.25
0.50
1.0
2.0
5.0
MAX. DELAY TIME (1)/
MAX. OUTPUT PULSE
WIDTH (2)
63.75
127.5
SIZE (4)
1275
255
510
STEP
10.0
0.5
1.0
2.0
4.0
7 of 16
D
where: t
DEVIATION (3)
MAXIMUM
FREQUENCY (5)
MINIMUM O/P
D
20
1
2
4
8
0.98 MHz
6.6 MHz
3.6 MHz
1.9 MHz
0.4 MHz
= absolute delay value.
MAXIMUM
I/P FREQ
25 MHz
25 MHz
25 MHz
25 MHz
10 MHz
FREQUENCY (5)
MAXIMUM O/P
MINIMUM I/P
22 MHz
22 MHz
22 MHz
22 MHz
22 MHz
WIDTH
PULSE
20
20
20
20
50
DS1023