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參數(shù)資料
| 型號： | AD7801BR |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | DAC |
| 英文描述： | +2.7 V to +5.5 V, Parallel Input, Voltage Output 8-Bit DAC |
| 中文描述： | PARALLEL, 8 BITS INPUT LOADING, 1.2 us SETTLING TIME, 8-BIT DAC, PDSO20 |
| 封裝： | SOIC-20 |
| 文件頁數(shù)： | 6/16頁 |
| 文件大小： | 219K |
| 代理商： | AD7801BR |
AD7801
–6–
REV. 0
1
2
M20.0ms
V
OUT
V
DD
CH1
5.00V CH2 5.00V
CH1
T
T
Figure 11. Power-On—Reset
INPUT CODE (15 to 245)
I
0
256
32
64
96
128
160
192
224
–0.5
0.4
0.1
–0.1
–0.3
–0.4
0.3
0.2
0
–0.2
0.5
V
= 5V
INTERNAL REFERENCE
5k
100pF LOAD
LIMITED CODE RANGE (15–245)
T
A
= +25
°
C
Figure 14. Integral Linearity Plot
–Typical Performance Characteristics
–25
4
0
7
6
2
1
5
3
8
9
10
–50
0
TEMPERATURE – C
25
50
75
100
125
Z
VDD = 2.7 TO 5.5V
DAC LOADED WITH ALL ZEROES
INTERNAL REFERENCE
Figure 12. Zero Code Error vs.
Temperature
V
= 5V
INTERNAL REFERENCE
0.5
0.4
0.3
0.2
0.1
0
–0.1
–0.2
–0.3
–0.4
–0.5
–60 –40 –20
0
20
40
60
80 100 120 140
I
TEMPERATURE – C
Figure 15. Typical INL vs. Temperature
2
←
1
←
WR
V
OUT
V
= 5V
INTERNAL VOLTAGE
REFERENCE
10 LSB STEP CHANGE
T
A
= +25
8
C
CH1 5.00V, CH2 50.0mV, M 250ns
Figure 13. Small-Scale Settling Time
V
= 5V
INTERNAL REFERENCE
0.5
0.4
0.3
0.2
0.1
0
–0.1
–0.2
–0.3
–0.4
–0.5
–60 –40 –20
0
20
40
60
80 100 120 140
TEMPERATURE – C
D
Figure 16. Typical DNL vs. Temperature
V
DD
= 5V
0.6
0.4
0.2
0
–60 –40 –20
0
TEMPERATURE – C
20
40
60
80 100 120 140
I
0.8
1.0
Figure 17. Typical Internal Reference
Error vs. Temperature
TEMPERATURE – C
0
–50
–25
150
V
= 5V
LOGIC INPUTS = V
DD
OR GND
100
200
300
400
500
600
700
800
900
1000
P
0
25
50
75
100
Figure 18. Power-Down Current vs.
Temperature
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