AD5245 Analog Devices, AD5245 Datasheet - Page 8

• Manufacturer Part Number: AD5245
• Description: 256-Position I2C Compatible Digital Potentiometer
• Manufacturer: Analog Devices

AD5245
–12
–18
–24
–30
–36
–42
–48
–54
–60
–20
REF LEVEL
0.000dB
–6
160
140
120
100
START 1 000.000Hz
80
60
40
20
200
150
100
–50
0
0
Figure 16. Potentiometer Mode Tempco ∆V
50
1k
0
0
0
Figure 15. Rheostat Mode Tempco ∆R
Figure 17. Gain vs. Frequency vs. Code, R
32
32
/DIV
6.000dB
64
64
10k
0x80
0x40
0x20
0x10
0x08
0x04
0x02
0x01
96
96
CODE (Decimal)
CODE (Decimal)
128
128
MARKER 1 000 000.000Hz
MAG (A/R)
160
160
100k
STOP 1 000 000.000Hz
WB
/∆T vs. Code
WB
192
AB
192
–8.918dB
/∆T vs. Code
= 5 kΩ
224
224
1M
256
256
Rev. 0 | Page 8 of 16
–12
–18
–24
–30
–36
–42
–48
–54
–60
–12
–18
–24
–30
–36
–42
–48
–54
–60
–12
–18
–24
–30
–36
–42
–48
–54
–60
REF LEVEL
0.000dB
–6
START 1 000.000Hz
REF LEVEL
0.000dB
–6
START 1 000.000Hz
REF LEVEL
0.000dB
–6
START 1 000.000Hz
0
0
0
1k
1k
1k
Figure 20. Gain vs. Frequency vs. Code, R
Figure 18. Gain vs. Frequency vs. Code, R
Figure 19. Gain vs. Frequency vs. Code, R
/DIV
6.000dB
/DIV
6.000dB
/DIV
6.000dB
10k
10k
10k
0x80
0x40
0x20
0x10
0x08
0x04
0x02
0x01
0x80
0x40
0x20
0x10
0x08
0x04
0x02
0x01
0x80
0x40
0x20
0x10
0x08
0x04
0x02
0x01
MARKER 510 634.725Hz
MAG (A/R)
MARKER 100 885.289Hz
MAG (A/R)
MARKER 54 089.173Hz
MAG (A/R)
100k
100k
STOP 1 000 000.000Hz
100k
STOP 1 000 000.000Hz
STOP 1 000 000.000Hz
AB
AB
AB
–9.049dB
–9.014dB
–9.052dB
= 100 kΩ
= 10 kΩ
= 50 kΩ
1M
1M
1M