• AD5228BUJZ100-R2
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The AD5228 is Analog Devices’ latest 32-step-up/step-down control digital potentiometer emulating mechanical potenti-ometer operation1. Its simple up/down control interface allows manual control with just two external pushbutton tactile switches. The AD5228 is designed with a built-in adaptive debouncer that ignores invalid bounces due to contact bounce commonly found in mechanical switches. The debouncer is adaptive, accommodating a variety of pushbutton tactile switches that generally have less than 10 ms of bounce time during contact closures. When choosing the switch, the user should consult the timing specification of the switch to ensure its suitability in an AD5228 application. The AD5228 can increment or decrement the resistance in discrete steps or in autoscan mode. When the PU or PD button is pressed briefly (no longer than 0.6 s), the resistance of the AD5228 changes by one step. When the PU or PD button is held continuously for more than a second, the device activates the autoscan mode and changes four resistance steps per second. The AD5228 can also be controlled digitally; its up/down features simplify microcontroller usage. The AD5228 is available in a compact thin SOT-23-8 (TSOT-8) package. The part is guaranteed to operate over the automotive temperature range of −40°C to +105°C. The AD5228’s simple interface, small footprint, and very low cost enable it to replace mechanical potentiometers and trimmers with typically 3× improved resolution, solid-state reliability, and faster adjustment, resulting in considerable cost saving in end users’ systems. Users who consider EEMEM potentiometers should refer to the recommendations in the Applications section. Applications Mechanical potentiometer and trimmer replacements LCD backlight, contrast, and brightness controls Digital volume control Portable device-level adjustments Electronic front panel-level controls Programmable power supply 1 The terms digital potentiometer and RDAC are used interchangeably.

supply_voltage_dc2.70 V (min)
rohs_statusCompliant
reach_svhc_complianceNo SVHC
lead_free_statusContains Lead
resistance100 kΩ
quiescent_current50.0 µA
resistance_tolerance±20%
packagingTape, Tape & Reel (TR)
supply_current400 nA
number_of_circuits1
lifecycle_statusActive
mounting_styleSurface Mount
temperature_coefficient35.0 ppm/°C
pin_count8
number_of_channels1
End To End Resistance100kohm
No. of PotsSingle
Control InterfacePushbutton
Resistance Tolerance± 20%
Supply Voltage Min2.7V
Supply Voltage Max5.5V
Potentiometer IC Case StyleTSOT
No. of Pins8Pins
No. of Steps32
Temperature Coefficient± 35ppm/°C
Operating Temperature Min-40°C
Operating Temperature Max105°C
PackagingCut Tape
Product RangeSingle 32-Tap Volatile Digital Pots
Automotive Qualification Standard-
RoHS Phthalates CompliantYes
MSLMSL 1 - Unlimited
SVHCNo SVHC (07-Jul-2017)
Base Number5228
IC Generic Number5228
Logic Function Number5228
No. Steps32
No. of Channels1Channels
Operating Temperature Range-40°C to +105°C
Resistance Range TypeLinear
Supply Voltage Range2.7V to 5.5V
Termination TypeSurface Mount Device
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