Typical operating characteristics (continued) – Rainbow Electronics MAX5128 User Manual
Page 7
MAX5128
128-Tap, Nonvolatile, Linear-Taper Digital
Potentiometer in 2mm x 2mm µDFN Package
_______________________________________________________________________________________
7
-18
-14
-12
-10
-8
-6
-4
-2
0
0.1
1
10
100
1000
WIPER RESPONSE
vs. FREQUENCY
MAX5128 toc19
FREQUENCY (kHz)
GAIN (dB)
-16
V
CC
= 5V
WIPER = MIDSCALE
THD+N vs. FREQUENCY
MAX5128 toc20
FREQUENCY (kHz)
THD+N (%)
10
1
0.001
0.01
0.1
1
10
0.0001
0.1
100
V
CC
= 5V
WIPER = MIDSCALE
FILTER BANDWIDTH = 80kHz
1
µs/div
TAP-TO-TAP SWITCHING TRANSIENT
V
W
20mV/div
AC-COUPLED
UP
2V/div
MAX5128 toc21
H = V
CC
L = GND
FROM MIDSCALE
C
W
= 20pF
0
200
100
400
300
500
600
MAX5128 toc22
R
W
(Ω
)
WIPER RESISTANCE vs. CODE
0
24 36
12
48 60 72 84 96 108 120
CODE
10
µs/div
MIDSCALE WIPER TRANSIENT
AT POWER-ON
V
CC
2V/div
OUTPUT
W
2V/div
MAX5128 toc23
Typical Operating Characteristics (continued)
(V
CC
= +5.0V, T
A
= +25°C, unless otherwise noted.)
SUPPLY CURRENT
vs. DIGITAL INPUT VOLTAGE
MAX5128 toc17
DIGITAL INPUT VOLTAGE (V)
I
DD
(µ
A)
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
1
10
100
1000
0.1
0
5.0
V
CC
= 5V
0
200
600
400
800
1000
-40
10
-15
35
60
85
WIPER RESISTANCE
vs. TEMPERATURE
MAX5128 toc18
TEMPERATURE (
°C)
R
W
(Ω
)
V
CC
= 5V
WIPER = MIDSCALE