AD5204BN100

Overview

The AD5204BN100 is a four-channel, 256-position digitally controlled variable resistor from Analog Devices. It features a nominal end-to-end resistance of 100 kΩ with a temperature coefficient of 700 ppm/°C. The device operates on a single supply of +2.7 V to +5.5 V or dual supplies of ±2.3 V to ±2.7 V. It utilizes a 3-wire SPI-compatible serial interface for programming. Each channel includes an independent latch holding the resistance value. The component is housed in a 24-lead PDIP package and functions over an extended industrial temperature range of −40°C to +85°C.

Feature Summary

• Four independently programmable channels with 256 tap positions
• 100 kΩ nominal terminal resistance with linear taper
• 3-wire SPI-compatible serial interface with daisy-chain capability via SDO pin
• Power-on midscale preset and hardware reset (PR) pin functionality

Applications

• Mechanical potentiometer replacement in embedded systems
• Instrumentation gain and offset adjustment circuits
• Programmable voltage-to-current conversion stages
• Adjustable filter time constants and delay lines

Procurement Notes

Verify the specific suffix BN100 corresponds to the 100 kΩ resistance variant and the 24-lead PDIP package configuration. Confirm that the required operating environment falls within the specified −40°C to +85°C industrial temperature range. Ensure power supply rails adhere to the maximum limits of +5.5 V single supply or ±2.7 V dual supply to prevent device damage.

Selection Notes

Select this component when a multi-channel digital solution is required to replace mechanical pots. The 100 kΩ value suits applications requiring higher impedance nodes. Consider the 700 ppm/°C temperature coefficient for thermal stability requirements. Verify that the system logic levels are compatible with the specified VIH and VIL thresholds at the chosen supply voltage.

Part Context

This part belongs to the AD5204 family of 4-channel digital potentiometers. The 'BN' designation indicates the 24-lead PDIP package option, while '100' specifies the 100 kΩ resistance value. Other variants include SOIC/TSSOP packages and different resistance values such as 10 kΩ and 50 kΩ. The AD5206 is the 6-channel counterpart in the same series.

Replacement Considerations

Direct pin-for-pin replacements may be limited due to package specificity. Check for availability of other AD5204 variants in different packages if PCB layout allows modification. Ensure substitute components support the same 3-wire serial protocol and voltage ranges.