AD5254 Просмотр технического описания (PDF) - Analog Devices
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AD5254 Datasheet PDF : 32 Pages
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240
220
200
180
160
140
120
100
80
60
40
20
0
0
VDD = 2.7V
TA = 25°C
DATA = 0x00
VDD = 5.5V
TA = 25°C
1
2
3
4
5
6
VBIAS (V)
Figure 9. Wiper Resistance vs. VBIAS
6
4
2
0
–2
–4
–6
–40 –20
0
20
40
60
80 100 120
TEMPERATURE (°C)
Figure 10. Change of RWB vs. Temperature
90
80
VDD = 5V
TA = –40°C/+85°C
70
VA = VDD
VB = 0V
60
50
40
30
20
10
0
0
32
64
96 128 160 192 224 256
CODE (Decimal)
Figure 11. Rheostat Mode Tempco (∆RWB/RWB)/∆T × 106 vs. Code
AD5253/AD5254
30
VDD = 5V
25
TA = –40°C/+85°C
VA = VDD
VB = 0V
20
15
10
5
0
0
32
64
96 128 160 192 224 256
CODE (Decimal)
Figure 12. Potentiometer Mode Tempco (∆VWB/VWB)/∆T × 106 vs. Code
0
0xFF
–6
0x40
0x80
–12
0x20
–18
0x10
–24
–30
–36
0x08 0x04
0x02
–42
0x01 0x00
–48
–54
–60
10
100
1k
10k
100k
1M
10M
FREQUENCY (Hz)
Figure 13. Gain vs. Frequency vs. Code, RAB = 1 kΩ, TA = 25°C
0
0xFF
–6
0x80
–12
0x40
–18
0x20
–24
0x10
–30
0x08
–36
0x04
–42
0x01
–48
0x00
–54
0x02
–60
10
100
1k
10k
100k
1M
10M
FREQUENCY (Hz)
Figure 14. Gain vs. Frequency vs. Code, RAB = 10 kΩ, TA = 25°C
Rev. B | Page 11 of 32
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