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MAX5471 Datasheet(PDF) 3 Page - Maxim Integrated Products

Part No. MAX5471
Description  32-Tap, Nonvolatile, Linear-Taper Digital Potentiometers
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Maker  MAXIM [Maxim Integrated Products]
Homepage  http://www.maxim-ic.com
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MAX5471 Datasheet(HTML) 3 Page - Maxim Integrated Products

 
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32-Tap, Nonvolatile, Linear-Taper Digital
Potentiometers in SOT23
_______________________________________________________________________________________
3
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
50k
Ω configuration, and 40µA for the 100kΩ configuration. At VDD = 2.7V, the wiper terminal is driven with a source current
of 40µA for the 50k
Ω 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.
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
MIN
TYP
MAX
UNITS
TIMING CHARACTERISTICS (Figure 1, Note 7)
CS to INC Setup
tCI
50
ns
INC High to U/D Change
tID
0ns
U/D to INC Setup
tDI
100
ns
INC Low Period
tIL
50
ns
INC High Period
tIH
50
ns
INC Cycle Time
tCYC
100
ns
INC Inactive to CS Inactive
tIC
100
ns
INC Active to CS Inactive
tIK
100
ns
CS Deselect Time (Store)
tCPH
100
ns
Wiper Settling Time
tIW
(Note 8)
1
µs
Power-Up to Wiper Stable
tPU
1µs
Wiper Store Cycle
tWSC
12
ms
NONVOLATILE MEMORY RELIABILITY
Data Retention
TA = +85°C
50
Year
Endurance
TA = +85°C
200,000
Store
POWER SUPPLY
Supply Voltage
VDD
2.70
5.25
V
Supply Current
IDD
Write to memory
400
µA
Static Supply Current
ISD
TA = +25°C (Note 9)
0.35
1
µA


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