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AD7293 Fiches technique(PDF) 19 Page - Analog Devices

No de pièce AD7293
Description  12-Bit Power Amplifier Current Controller with ADC, DACs, and Temperature and Current Sensors
PDF  79 Pages
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Fabricant  AD [Analog Devices]
Site Internet  http://www.analog.com
Logo AD - Analog Devices

AD7293 Fiches technique(HTML) 19 Page - Analog Devices

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Data Sheet
AD7293
Rev. D | Page 19 of 79
–4.65
–5.05
–5.00
–4.95
–4.90
–4.85
–4.80
–4.75
–4.70
–16
–14
–12
–10
–8
–6
–4
–2
0
LOAD CURRENT (mA)
–5V TO 0V, CODE 246 (ZERO SCALE + 300mV)
–5V TO 0V, CODE 0 (ZERO SCALE)
Figure 20. BI-VOUT0 Output Voltage (Zero Scale) vs. Load Current
6
–6
–4
–2
0
2
4
–80
–60
–40
–20
0
20
40
60
80
LOAD CURRENT (mA)
BI-VOUT0 0/4 SCALE
BI-VOUT0 1/4 SCALE
BI-VOUT0 2/4 SCALE
BI-VOUT0 3/4 SCALE
BI-VOUT0 4/4 SCALE
Figure 21. BI-VOUT0 Output Voltage vs. Load Current
500
–500
–400
–300
–200
–100
0
100
200
300
400
–40
120
100
80
60
40
20
0
–20
TEMPERATURE (°C)
UNIPOLAR GAIN ERROR, +2.5V TO +7.5V
UNIPOLAR GAIN ERROR, +5V TO +10V
UNIPOLAR GAIN ERROR, 0V TO +5V
BIPOLAR GAIN ERROR, 0V TO +5V
BIPOLAR GAIN ERROR, –4V TO +1V
BIPOLAR GAIN ERROR, –5V TO 0V
Figure 22. DAC Gain Error vs. Temperature
16
–4
–2
0
2
4
6
8
10
12
14
–40
120
100
80
60
40
20
0
–20
TEMPERATURE (°C)
UNIPOLAR OFFSET ERROR 0V TO +5V
UNIPOLAR OFFSET ERROR +2.5V TO +7.5V
UNIPOLAR OFFSET ERROR +5V TO +10V
BIPOLAR OFFSET ERROR 0V TO +5V
BIPOLAR OFFSET ERROR –4V TO +1V
BIPOLAR OFFSET ERROR –5V TO 0V
Figure 23. DAC Offset Error vs. Temperature
12
11
10
9
8
7
6
5
4
3
2
1
0
–1
–4.45
–5.10
–5.05
–5.00
–4.95
–4.90
–4.85
–4.80
–4.75
–4.70
–4.65
–4.60
–4.55
–4.50
0
5
10
15
20
25
30
35
40
TIME (ms)
AVDD
PA_ON
AVSS
DAC BIPOLAR OUTPUT
Figure 24. Bipolar DAC Response to AVDD Failure
10
5
0
–5
–10
–15
–20
0
500
1000
1500
2000
2500
3000
3500
4000
CODE
UNIPOLAR, 0V TO 5V, HIGH TO LOW
UNIPOLAR, 5V TO 10V, LOW TO HIGH
UNIPOLAR, 0V TO 5V, LOW TO HIGH
BIPOLAR, 0V TO 5V, HIGH TO LOW
UNIPOLAR, 5V TO 10V, HIGH TO LOW
BIPOLAR, 0V TO 5V, LOW TO HIGH
Figure 25. DAC Glitch Energy vs. Code



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