MAX5389 查看數據表（PDF） - Maxim Integrated
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MAX5389 Datasheet PDF : 13 Pages
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Dual, 256-Tap, Volatile, Low-Voltage
Linear Taper Digital Potentiometer
ELECTRICAL CHARACTERISTICS (continued)
(VDD = +2.6V to +5.5V, VH__ = VDD, VL__ = GND, TA = -40NC to +125NC, unless otherwise noted. Typical values are at VDD = +5V,
TA = +25NC.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
AC PERFORMANCE
Crosstalk
(Note 5)
-90
dB
-3dB Bandwidth
MAX5389L
BW
Code = 80H,
VDD = +2.6V
10pF
load,
MAX5389M
MAX5389N
600
150
kHz
75
Total Harmonic Distortion Plus
Noise
THD+N Measured at W, VH_ = 1VRMS at 1kHz
0.015
%
MAX5389L
300
Wiper Settling Time (Note 6)
tS
MAX5389M
MAX5389N
1000
ns
2000
POWER SUPPLIES
Supply Voltage Range
Standby Current
DIGITAL INPUTS
VDD
Digital inputs = VDD or GND
2.6
5.5
V
1
FA
Minimum Input High Voltage
VIH
Maximum Input Low Voltage
VIL
Input Leakage Current
70
% x VDD
30 % x VDD
-1
+1
FA
Input Capacitance
5
pF
TIMING CHARACTERISTICS (Note 7)
Maximum INC_ Frequency
fMAX
CS to INC_ Setup Time
tCI
CS to INC_ Hold Time
tIC
INC_ Low Period
tIL
INC_ High Period
tIH
UD_ to INC_ Setup Time
tDI
UD_ to INC_ Hold Time
tID
10
MHz
25
ns
0
ns
25
ns
25
ns
50
ns
0
ns
Note 1: All devices are 100% production tested at TA = +25NC. Specifications over temperature limits are guaranteed by design
and characterization.
Note 2: DNL and INL are measured with the potentiometer configured as a voltage-divider (Figure 1) with H_ = VDD and L_ = 0V.
The wiper terminal is unloaded and measured with a high-input-impedance voltmeter.
Note 3: R-DNL and R-INL are measured with the potentiometer configured as a variable resistor (Figure 1). DNL and INL are mea-
sured with potentiometer configured as a variable resistor. H_ is unconnected and L_ = GND. For VDD = +5V, the wiper
terminal is driven with a source current of 400µA for the 10kω configuration, 80µA for the 50kω configuration, and 40µA for
the 100kω configuration. For VDD = +2.6V, the wiper terminal is driven with a source current of 200µA for the 10kω configu-
ration, 40µA for the 50kω configuration, and 20µA for the 100kω configuration.
Note 4: The wiper resistance is the worst value measured by injecting the currents given in Note 3 into W_ with L_ = GND. RW =
(VW – VH)/IW.
Note 5: Drive HA with a 1kHz, GND to VDD amplitude, tone. LA = LB = GND. No load. WB is at midscale with a 10pF load. Measure
WB.
Note 6: The wiper-settling time is the worst case 0 to 50% rise time, measured between tap 0 and tap 127. H_ = VDD, L_ = GND,
and the wiper terminal is loaded with 10pF capacitance to ground.
Note 7: Digital timing is guaranteed by design and characterization, not production tested.
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