DAC08 Analog Devices, DAC08 Datasheet - Page 15

• Manufacturer Part Number: DAC08
• Description: 8-Bit, High Speed, Multiplying D/A Converter (Universal Digital Logic Interface)
• Manufacturer: Analog Devices

Specifications of DAC08

• Resolution (bits): 8bit
• Dac Update Rate: 11.8MSPS
• Dac Settling Time: 85ns
• Max Pos Supply (v): +18V
• Single-supply: No
• Dac Type: Current Out
• Dac Input Format: Par

RC damping of the output is difficult to prevent while main-
taining adequate sensitivity. However, the major carry from
01111111 to 10000000 provides an accurate indicator of settling
time. This code change does not require the normal 6.2 time
constants to settle to within ±0.2% of the final value, and thus
settling time is observed at lower values of I
DAC08 switching transients or “glitches” are very low and can
be further reduced by small capacitive loads at the output at a
+V
0.7V
V
REF
CL
R
R15
REF
0.1µF
14
15
0.1µF
5
+15V
6 7 8 9 10 11 12
13
REF
DAC08
.
V
–15V
IN
FOR TURN-ON, V
FOR TURN-OFF, V
3
Figure 33. Settling Time Measurement
16
CAPACITANCE
0.01µF
0.1µF
MINIMUM
4
2
Rev. C | Page 15 of 20
L
L
= 2.7V
= 0.7V
I
OUT
Q1
V
L
1kΩ
minor sacrifice in settling time. Fastest operation can be
obtained by using short leads, minimizing output capacitance
and load resistor values, and by adequate bypassing at the
supply, reference, and V
large electrolytic bypass capacitors because the supply current
drain is independent of input logic states; 0.1 µF capacitors at
the supply pins provide full transient protection.
100kΩ
1kΩ
1µF
2kΩ
1µF
50µF
–15V
+5V
Q2
15kΩ
V
PROBE
OUT
LC
terminals. Supplies do not require
1
×
+0.4V
0.1µF
–0.4V
0V
0V
DAC08