Typical operating characteristics (continued), Circuit of figure 1, t – Rainbow Electronics MAX5484 User Manual
Page 8
MAX5481–MAX5484
10-Bit, Nonvolatile, Linear-Taper Digital
Potentiometers
8
_______________________________________________________________________________________
Typical Operating Characteristics (continued)
(Circuit of Figure 1, T
A
= +25°C, unless otherwise noted.)
1
µs/div
TAP-TO-TAP SWITCHING TRANSIENT
RESPONSE (MAX5481)
V
W
(AC-COUPLED)
20mV/div
CS
2V/div
MAX5481 toc28
H = V
DD
, L = GND
C
W
= 10pF
FROM CODE 01 1111 1111
TO CODE 10 0000 0000
4
µs/div
TAP-TO-TAP SWITCHING TRANSIENT
RESPONSE (MAX5482)
V
W
(AC-COUPLED)
20mV/div
CS
2V/div
MAX5481 toc29
H = V
DD
, L = GND
C
W
= 10pF
FROM CODE 01 1111 1111
TO CODE 10 0000 0000
WIPER RESPONSE vs. FREQUENCY
(MAX5481)
MAX5481 toc30
FREQUENCY (kHz)
GAIN (dB)
100
10
1
-20
-15
-10
-5
0
-25
0.1
1000
C
W
= 10pF
C
W
= 30pF
CODE = 01111 01111
WIPER RESPONSE vs. FREQUENCY
(MAX5482)
MAX5481 toc31
FREQUENCY (kHz)
GAIN (dB)
100
10
1
-20
-15
-10
-5
0
-25
0.1
1000
C
W
= 10pF
C
W
= 30pF
CODE = 01111 01111
THD+N vs. FREQUENCY
(MAX5481)
MAX5481 toc32
FREQUENCY (kHz)
THD+N (%)
10
1
0.1
0.001
0.01
0.1
1
10
0.0001
0.01
100
CODE 01111 01111
C
W
= 10pF
THD+N vs. FREQUENCY
(MAX5482)
MAX5481 toc33
FREQUENCY (kHz)
THD+N (%)
10
1
0.1
0.001
0.01
0.1
1
10
0.0001
0.01
100
CODE 01111 01111
C
W
= 10pF
0
40
20
80
60
120
100
140
180
160
200
0
256 384
128
512 640 768 896 1024
RATIOMETRIC TEMPERATURE
COEFFICIENT vs. CODE
MAX5481 toc34
CODE
RATIOMETRIC TEMPCO (ppm)
50k
Ω
VOLTAGE-DIVIDER
V
DD
= +3V
T
A
= -40
°C TO +85°C
10k
Ω
0
100
300
200
500
600
400
700
VARIABLE-RESISTOR TEMPERATURE
COEFFICIENT vs. CODE
MAX5481 toc35
TC
VR
(ppm)
0
256 384
128
512 640 768 896 1024
CODE
50k
Ω
V
DD
= +3V
T
A
= -40
°C TO +85°C
10k
Ω