參數(shù)資料
型號(hào): AD7809BST
廠商: ANALOG DEVICES INC
元件分類(lèi): DAC
英文描述: +3.3 V to +5 V Quad/Octal 10-Bit DACs
中文描述: PARALLEL, 8 BITS INPUT LOADING, 1.5 us SETTLING TIME, 10-BIT DAC, PQFP44
封裝: PLASTIC, TQFP-44
文件頁(yè)數(shù): 21/28頁(yè)
文件大?。?/td> 300K
代理商: AD7809BST
CURRENT – mA
0.150000
0.075000
0.000000
–0.5
0.5
–0.4
V
O
–0.3
–0.2
–0.1
0.0
0.1
0.2
0.3
0.4
0.125000
0.100000
0.050000
0.025000
SINK CURRENT
SOURCE CURRENT
V
DD
= 5.5V
V
DD
= 3V
MAIN DAC = ZERO SCALE
SUB DAC = MID SCALE
V
BIAS
= V
DD
/2
T
A
8
C
Figure 29. Sink and Source Current with Zero Scale
Loaded to DAC. V
DD
= 5 V and V
DD
= 3 V
5.200000
5.140000
5.100000
–6.0
6.0
V
O
–4.0
–2.0
0.0
2.0
4.0
5.180000
5.160000
5.120000
SINK CURRENT
SOURCE CURRENT
R
L
=
R
L
= 2k
V
CURRENT – mA
V
= 5.5V
MAIN DAC = FULL SCALE
SUB DAC = MID SCALE
V
BIAS
= V
DD
/2
T
A
8
C
Figure 30. Sink and Source Current at Full Scale with
V
DD
= 5 V
2.850000
2.790000
2.750000
–6.0
6.0
V
O
–4.0
–2.0
0.0
2.0
4.0
2.830000
2.810000
2.770000
SINK CURRENT
SOURCE CURRENT
R
L
=
R
L
= 2k
V
CURRENT – mA
V
DD
= 3V
MAIN DAC = FULL SCALE
SUB DAC = MID SCALE
V
BIAS
= V
DD
/2
T
A
= +25
8
C
Figure 31. Sink and Source Current at Full Scale with
V
DD
= 3 V
2.0
1.0
0.0
–1.0
–2.00
100
200
300
400
500
600
700
800
900 1023
DAC CODE
I
1.5
0.5
–0.5
–1.5
AV
DD
= DV
DD
= 5V
V
BIAS
= V
DD
/2
T
= +25
8
C
SUB DAC LOADED WITH
1/2 SCALE
Figure 32. Integral Linearity with 5 V Operation
2.0
1.0
0.0
–1.0
–2.00
100
200
300
400
500
600
700
800
900 1023
DAC CODE
I
1.5
0.5
–0.5
–1.5
AV
DD
= DV
DD
= 3V
V
BIAS
= V
DD
/2
T
= +25
8
C
SUB DAC LOADED WITH
1/2 SCALE
Figure 33. Integral Linearity with 3 V Operation
1.225
1.2160
200
D
40
80
120
160
1.224
ns
1.223
1.222
1.221
1.220
1.219
1.218
1.217
180
20
60
100
140
V
DD
= 3V
R
= 2k
V
||
100pF
CODE CHANGE
011111 1111 TO
100000 0000
T
A
= +25
8
C
Figure 34. Digital-to-Analog Glitch Impulse
Typical Performance Characteristics–AD7804/AD7805/AD7808/AD7809
REV. A
–21–
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