MAX5471 データシートの表示（PDF） - Maxim Integrated
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MAX5471 Datasheet PDF : 12 Pages
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32-Tap, Nonvolatile, Linear-Taper Digital
Potentiometers in SOT23
ELECTRICAL CHARACTERISTICS (continued)
(VDD = +2.7V to +5.25V, VH = VDD, VL = GND, TA = -40°C to +85°C, unless otherwise noted. Typical values are at VDD = +5.0V, TA
= +25°C, unless otherwise noted.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
TIMING CHARACTERISTICS (Figure 1, Note 7)
CS to INC Setup
INC High to U/D Change
U/D to INC Setup
INC Low Period
INC High Period
INC Cycle Time
INC Inactive to CS Inactive
INC Active to CS Inactive
CS Deselect Time (Store)
tCI
tID
tDI
tIL
tIH
tCYC
tIC
tIK
tCPH
Wiper Settling Time
Power-Up to Wiper Stable
tIW
(Note 8)
tPU
Wiper Store Cycle
tWSC
NONVOLATILE MEMORY RELIABILITY
Data Retention
TA = +85°C
Endurance
POWER SUPPLY
TA = +85°C
Supply Voltage
Supply Current
VDD
IDD
Write to memory
Static Supply Current
ISD
TA = +25°C (Note 9)
MIN TYP MAX UNITS
50
ns
0
ns
100
ns
50
ns
50
ns
100
ns
100
ns
100
ns
100
ns
1
µs
1
µs
12
ms
50
200,000
Year
Store
2.70
5.25
V
400
µA
0.35
1
µA
Note 1: All devices are production tested at TA = +25°C and are guaranteed by design and characterization for -40°C < TA < +85°C.
Note 2: The DNL and INL are measured with the potentiometer configured as a variable resistor. For the 3-terminal potentiometers
(MAX5474/MAX5475), H is unconnected and L = GND. At VDD = 5.25V, W is driven with a source current of 80µA for the
50kΩ configuration, and 40µA for the 100kΩ configuration. At VDD = 2.7V, the wiper terminal is driven with a source current
of 40µA for the 50kΩ configuration, and 20µA for the 100kΩ configuration.
Note 3: The DNL and INL are measured with the potentiometer configured as a voltage-divider with H = VDD and L = GND
(MAX5474/MAX5475 only). The wiper terminal is unloaded.
Note 4: The wiper resistance is the worst value measured by injecting the currents given in Note 2 into W with L = GND.
RW = (VW - VH) / IW.
Note 5: The device draws higher supply current when digital inputs are driven with voltages between 0.3V x VDD and 0.7 x VDD.
Drive the digital inputs as close as possible to VDD or GND. (See the Typical Operating Characteristics for the Supply
Current vs. Digital Input Voltage graph.)
Note 6: Wiper at midscale with a 10pF load.
Note 7: Digital timing is guaranteed by design and characterization, and is not production tested.
Note 8: Wiper settling time is the worst-case 0% to 50% rise time measured between consecutive wiper positions. H = VDD, L =
GND, and the wiper terminal is unloaded and measured with a 10pF oscilloscope probe (see the Typical Operating
Characteristics for the Tap-to-Tap Switching Transient).
Note 9: Digital inputs CS, U/D, and INC are connected to GND or VDD. See the Typical Operating Characteristics for the Static
Supply Current vs. Temperature graph.
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