LTC2636CDE-HMX10#PBF

Overview

The LTC2636CDE-HMX10#PBF is an octal 10-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features a 14-lead DFN package and operates within a supply voltage range of 4.5V to 5.5V. The device incorporates an internal reference setting a full-scale output of 4.096V, with power-on reset configured to mid-scale in external reference mode. Key electrical parameters include a maximum integral nonlinearity (INL) of ±1 LSB, a settling time of 4.3µs at 5V, and a supply current of 1.1mA. Communication is handled via a 3-wire SPI/MICROWIRE interface supporting clock rates up to 50MHz.

Feature Summary

• Octal architecture providing eight independent 10-bit DAC channels in a single component
• Integrated high-accuracy reference yielding a 4.096V full-scale output with 10ppm/°C drift
• Power-on reset logic defaults outputs to mid-scale when operating in external reference mode
• Rail-to-rail output buffers guaranteed monotonic over the commercial temperature range

Applications

• Process control systems requiring multi-channel signal generation
• Industrial automation equipment utilizing serial bus interfaces
• Portable instrumentation powered by single-supply architectures

Procurement Notes

Verify the specific ordering suffix HMX10 against the manufacturer's official documentation to confirm the power-on reset behavior and resolution. Ensure the design accommodates the 4.5V minimum supply requirement for the H-grade variant. Confirm that the 14-lead DFN footprint matches the PCB layout specifications provided in the datasheet.

Selection Notes

Select this part when eight isolated voltage outputs are required with moderate precision. The H-series designation mandates a supply voltage between 4.5V and 5.5V, distinguishing it from the L-series which supports lower voltages. The MX suffix indicates mid-scale initialization in external reference configurations, which may influence system startup sequencing compared to zero-scale options.

Part Context

This component belongs to the LTC2636 family of octal DACs, which offers various combinations of resolution, package type, and reset behaviors. The CDE suffix identifies the commercial temperature grade (0°C to 70°C) and the 14-lead plastic DFN package. Other variants in the series include industrial and automotive grades with different pinouts or reset characteristics.

Replacement Considerations

Direct substitutes within the same family include the LTC2636CDE-LMX10#PBF for lower voltage applications or the LTC2636CDE-HZ10#PBF for zero-scale reset requirements. Cross-family replacements require verification of pin compatibility and serial interface timing constraints.