LTC2636IDE-HMX12#TRPBF

Overview

The LTC2636IDE-HMX12#TRPBF 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 4.5V 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-compatible interface supporting clock rates up to 50MHz. This specific variant resets to mid-scale in external reference mode upon power-up and is housed in a 14-lead DFN package.

Feature Summary

• Octal 12-Bit Resolution: Provides eight independent 12-bit DAC channels with maximum integral nonlinearity error of ±2.5LSB.
• Integrated Reference: Features a built-in 4.096V full-scale reference with low drift of ±10ppm/°C.
• Industrial Temperature Range: Rated for operation between –40°C and +85°C.
• Power-On Reset Options: Configured to reset outputs to mid-scale when operating in external reference mode.

Applications

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

Procurement Notes

Verify the ordering suffix #TRPBF indicates tape and reel packaging containing 2500 pieces. Confirm the DE package designation corresponds to the 14-lead DFN form factor. Ensure the H grade matches the required 4.5V to 5.5V supply voltage range and that the MX suffix aligns with the mid-scale reset requirement for external reference applications.

Selection Notes

Select this part when eight isolated 12-bit voltage outputs are required within a compact footprint. The H-grade internal reference sets the full-scale voltage to 4.096V, necessitating a supply voltage between 4.5V and 5.5V. Choose the MX power-on reset option if downstream circuitry requires a known mid-scale state during initialization rather than zero-scale. Verify compatibility with the 3-wire serial interface timing requirements.

Part Context

This component belongs to the LTC2636 family of octal DACs, which also includes 10-bit and 8-bit variants. The family shares similar architectural features but differs in resolution, accuracy specifications, and full-scale voltage options determined by the internal reference configuration. The DE package distinguishes it from the MSOP package variants, offering a smaller thermal profile suitable for space-constrained designs.

Replacement Considerations

Direct replacements within the same family include other LTC2636 variants with different resolutions or reset configurations. For identical electrical performance and pinout, verify that substitute parts match the 14-lead DFN package and the specific power-on reset behavior defined by the MX suffix.