Datasheet

AD5280/AD5282
Rev. C | Page 9 of 28
I
LOGIC
(µA)
1000
100
5
929-016
FREQUENCY (Hz)
GAIN (dB)
0
–30
–24
–12
–18
–6
–36
–48
–42
–54
–60
0 10k 100k 1M
02929-019
V
IH
(V)
10
01234
02
80H
R
AB
= 20k
T
A
= 25°C
20H
V
DD
/V
SS
= 5V/0V
V
LOGIC
= 3V
V
DD
/V
SS
= 5V/0V
V
LOGIC
= 5V
RHEOST
10H
08H
04H
02H
01H
T
A
= 25°C
V
A
= 50mV rms
V
DD
/V
SS
= ±5V
40H
FREQUENCY (Hz)
GAIN (dB)
0
–30
–24
–12
–18
–6
–36
–48
–42
–54
–60
0 10k 100k 1M
02929-020
Figure 18. V
LOGIC
Supply Current vs. Digital Input Voltage
CODE (Decimal)
AT MODE TEMPCO (ppm/°C)
700
300
400
500
600
200
100
0
–100
9-017
–200
0 32 64 19296 128 224 256
0292
T
A
= 25°C
20k
50k
200k
Figure 19. Rheostat Mode Tempco ΔR
WB
/ΔT vs. Code, V
DD
/V
SS
= ±5 V
CODE (Decimal)
POTENTIOMETER MODE TEMPCO (ppm/°C)
120
40
60
80
100
20
0
–20
–40
0 32 64 19296 128 224 256
02929-018
T
A
= 25°C
20k
50k
200k
Figure 20. Potentiometer Mode Tempco ΔV
WB
/ΔT vs. Code,
V
DD
/V
SS
= ±5 V
Figure 21. Gain vs. Frequency vs. Code, R
AB
= 20 kΩ
80H
20H
10H
08H
04H
02H
01H
T
A
= 25°C
V
A
= 50mV rms
V
DD
/V
SS
= ±5
40H
GAIN (dB)
0
–30
–24
–12
–18
–6
–36
–48
–42
–54
–60
02929-021
Figure 22. Gain vs. Frequency vs. Code, R
AB
= 50 kΩ
FREQUENCY (Hz)
0 10k 100k 1M
80H
40H
20H
10H
08H
04H
02H
01H
T
A
= 25°C
V
A
= 50mV rms
V
DD
/V
SS
= ±5V
Figure 23. Gain vs. Frequency vs. Code, R
AB
= 200 kΩ