Datasheet

(V
DD
= 1.8V, T
A
= +25°C, unless otherwise noted.)
MIDSCALE FREQUENCY
RESPONSE (50kΩ)
FREQUENCY (kHz)
GAIN (dB)
1001
-20
-10
0
10
-30
0.01 10k
MAX5391 toc26
V
DD
= 1.8V
V
DD
= 5V
V
IN
= 1V
P-P
MIDSCALE FREQUENCY
RESPONSE (100kΩ)
FREQUENCY (kHz)
GAIN (dB)
1001
-20
-10
0
10
-30
0.01 10k
MAX5391 toc27
V
DD
= 1.8V
V
DD
= 5V
V
IN
= 1V
P-P
BYP RAMP vs. C
BYP
MAX5391 toc30
CAPACITANCE (µF)
RAMP TIME (ms)
0.080.050.040.02
20
40
60
80
100
120
0
0 0.10
CHARGE-PUMP FEEDTHROUGH
AT W_ vs. C
BYP
MAX5391 toc31
CAPACITANCE (pF)
VOLTAGE (nV
RMS
)
600400200
100
200
300
400
500
600
700
0
0 800
CROSSTALK vs. FREQUENCY
MAX5391 toc28
FREQUENCY (kHz)
CROSSTALK (dB)
1001010.1
-120
-100
-80
-60
-40
-20
0
-140
0.01 1000
100kΩ
50kΩ
10kΩ
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY
MAX5391 toc29
FREQUENCY (kHz)
THD+N (%)
1010.1
0.02
0.04
0.06
0.08
0.10
0.12
0.14
0.16
0.18
0.20
0
0.01 100
10kΩ
50kΩ
100kΩ
MIDSCALE FREQUENCY
RESPONSE (10kΩ)
FREQUENCY (kHz)
GAIN (dB)
1001
-20
-10
0
10
-30
0.01 10k
MAX5391 toc25
V
DD
= 1.8V
V
DD
= 5V
V
IN
= 1V
P-P
MAX5391/MAX5393 Dual 256-Tap, Volatile, Low-Voltage
Linear Taper Digital Potentiometers
Maxim Integrated │ 7
www.maximintegrated.com
Typical Operating Characteristics (continued)