LTC2636IDE-LZ8#PBF

Overview

The LTC2636IDE-LZ8#PBF is an octal, 8-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features an integrated high-accuracy reference with a temperature coefficient of 10ppm/°C and a full-scale output of 2.5V. The device operates on a single 2.7V to 5.5V supply and includes rail-to-rail output buffers guaranteed monotonic over the industrial temperature range of –40°C to 85°C. Communication is handled via a 3-wire SPI/MICROWIRE interface supporting clock rates up to 50MHz. Upon power-up, the outputs reset to zero-scale. The component is housed in a 14-lead DFN package.

Feature Summary

• Octal architecture with eight independent 8-bit DAC channels
• Integrated 10ppm/°C reference providing 2.5V full-scale output
• Industrial temperature grade (-40°C to +85°C)
• Power-on reset to zero-scale for consistent initialization

Applications

• Process control and industrial automation systems
• Portable equipment requiring low power consumption
• Automotive electronic applications
• Optical networking infrastructure

Procurement Notes

Verify the specific ordering suffix LZ8 corresponds to the 8-bit resolution, zero-scale reset, and DFN package configuration. Confirm that the Industrial temperature grade (I) matches the operational environment requirements. Ensure compatibility with the 2.7V to 5.5V supply voltage range specified for the LTC2636-L series.

Selection Notes

Select this part when eight isolated analog outputs are required within a compact footprint. The zero-scale power-on reset is critical for safety or initialization-sensitive downstream circuits. Compare against the H-grade variant if a 4.096V full-scale range is needed, noting the higher minimum supply voltage requirement of 4.5V for that version.

Part Context

This component belongs to the LTC2636 family of octal DACs, which offers various combinations of resolution (8, 10, or 12 bits), reset behaviors, and package types. The IDE designation indicates the Industrial temperature range and DFN packaging, distinguishing it from Commercial (CDE) or Automotive (HDE) variants within the same functional family.

Replacement Considerations

Direct substitutes include other LTC2636 variants with different resolutions or reset options, such as LTC2636IDE-LMI8#PBF (mid-scale reset) or LTC2636IDE-LZ12#PBF (12-bit resolution). Verify pinout compatibility and electrical specifications before substitution.