LTC2636IDE-HMI12#PBF

Overview

The LTC2636IDE-HMI12#PBF is an octal 12-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, providing a full-scale output of 4.096V. The device operates on a single supply voltage ranging from 4.5V to 5.5V and utilizes a 3-wire SPI/MICROWIRE-compatible serial interface with clock rates up to 50MHz. It includes double-buffered data latches, power-on reset to mid-scale in internal reference mode, and rail-to-rail output buffers guaranteed monotonic over the industrial temperature range of –40°C to 85°C.

Feature Summary

• Octal 12-Bit Resolution: Provides eight independent 12-bit DAC channels with maximum integral nonlinearity (INL) error of ±2.5LSB.
• Integrated Precision Reference: Features an internal 10ppm/°C reference setting a 4.096V full-scale output.
• SPI Interface: Communicates via a 3-wire serial interface supporting clock rates up to 50MHz.
• Power-On Reset: Resets outputs to mid-scale upon power-up when using the internal reference.

Applications

• Mobile Communications
• Process Control and Industrial Automation
• Automatic Test Equipment
• Portable Equipment
• Automotive Systems

Procurement Notes

Verify the package type matches the design requirements, as this specific part number corresponds to the MSOP package variant. Confirm that the operating environment stays within the specified industrial temperature range of –40°C to 85°C. Ensure the power supply voltage remains between 4.5V and 5.5V for proper operation of the H-grade internal reference configuration.

Selection Notes

Select this component when eight synchronized 12-bit voltage outputs are required with tight linearity specifications. The H-grade designation indicates suitability for higher supply voltages (4.5V–5.5V) compared to L-grade parts. Consider the MSOP package if board space allows for its larger footprint relative to the DFN option, noting the availability of dedicated CLR and LDAC pins in this package style.

Part Context

This part belongs to the LTC2636 family of octal DACs, which offers various resolution and package combinations. The 'I' suffix denotes the industrial temperature grade, while 'H' specifies the 4.096V full-scale range derived from the internal reference. The 'MI' code indicates a power-on reset behavior set to mid-scale in internal reference mode.

Replacement Considerations

Direct replacements within the same family include other LTC2636 variants differing only in resolution (8-bit or 10-bit), package type (DFN vs. MSOP), or temperature grade (Commercial or Automotive). Verify pin compatibility and reset behavior when substituting.