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AD7804 Datasheet(PDF) 21 Page - Analog Devices

No. de pieza AD7804
Descripción Electrónicos  3.3 V to 5 V Quad/Octal 10-Bit DACs
PDF  28 Pages
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Fabricante Electrónico  AD [Analog Devices]
Página de inicio  http://www.analog.com
Logo AD - Analog Devices

AD7804 Datasheet(HTML) 21 Page - Analog Devices

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CURRENT – mA
0.150000
0.075000
0.000000
–0.5
0.5
–0.4 –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
VDD = 5.5V
VDD = 3V
MAIN DAC = ZERO SCALE
SUB DAC = MID SCALE
VBIAS = VDD/2
TA = +25 C
Figure 29. Sink and Source Current with Zero Scale
Loaded to DAC. VDD = 5 V and VDD = 3 V
5.200000
5.140000
5.100000
–6.0
6.0
–4.0
–2.0
0.0
2.0
4.0
5.180000
5.160000
5.120000
SINK CURRENT
SOURCE CURRENT
RL =
RL = 2k
CURRENT – mA
VDD = 5.5V
MAIN DAC = FULL SCALE
SUB DAC = MID SCALE
VBIAS = VDD/2
TA = +25 C
Figure 30. Sink and Source Current at Full Scale with
VDD = 5 V
2.850000
2.790000
2.750000
–6.0
6.0
–4.0
–2.0
0.0
2.0
4.0
2.830000
2.810000
2.770000
SINK CURRENT
SOURCE CURRENT
RL =
RL = 2k
CURRENT – mA
VDD = 3V
MAIN DAC = FULL SCALE
SUB DAC = MID SCALE
VBIAS = VDD/2
TA = +25 C
Figure 31. Sink and Source Current at Full Scale with
VDD = 3 V
2.0
1.0
0.0
–1.0
–2.0
0
100
200
300
400
500
600
700
800
900 1023
DAC CODE
1.5
0.5
–0.5
–1.5
AVDD = DVDD = 5V
VBIAS = VDD/2
TA = +25 C
SUB DAC LOADED WITH
1/2 SCALE
Figure 32. Integral Linearity with 5 V Operation
2.0
1.0
0.0
–1.0
–2.0
0
100
200
300
400
500
600
700
800
900 1023
DAC CODE
1.5
0.5
–0.5
–1.5
AVDD = DVDD = 3V
VBIAS = VDD/2
TA = +25 C
SUB DAC LOADED WITH
1/2 SCALE
Figure 33. Integral Linearity with 3 V Operation
1.225
1.216
0
200
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
VDD = 3V
RL = 2k ||100pF
CODE CHANGE
011111 1111 TO
100000 0000
TA = +25 C
Figure 34. Digital-to-Analog Glitch Impulse
Typical Performance Characteristics–AD7804/AD7805/AD7808/AD7809
REV. A
–21–



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