LTC2636CMS-LZ12#TRPBF

Overview

The LTC2636CMS-LZ12#TRPBF is an octal 12-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features a 14-lead DFN package and operates within a commercial temperature range of 0°C to 70°C. The device includes an integrated internal reference providing a 2.5V full-scale output and supports power-on reset to zero-scale. It utilizes a 3-wire SPI/MICROWIRE-compatible serial interface with clock rates up to 50MHz. Key electrical specifications include a maximum integral nonlinearity (INL) of ±2.5 LSB, a settling time of 4.4µs at 3V supply, and a typical supply current of 0.9mA.

Feature Summary

• Octal 12-Bit Resolution: Provides eight independent 12-bit DAC channels with guaranteed monotonicity over the operating temperature range.
• Integrated Reference: Features a built-in 10ppm/°C reference setting a 2.5V full-scale output; supports external reference selection.
• Power-On Reset: Configured for Zero-Scale reset upon power-up to ensure consistent system initialization.
• High-Speed Interface: Communicates via a 3-wire serial interface compatible with SPI and MICROWIRE standards, supporting SCK frequencies up to 50MHz.

Applications

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

Procurement Notes

Verify the specific ordering suffix #TRPBF indicates tape and reel packaging containing 2500 pieces. Confirm the CMS designation corresponds to the MSOP package variant if required, as datasheet part number structures may vary by distributor listing. Ensure the component meets RoHS compliance requirements for the intended assembly process.

Selection Notes

Select this part when eight isolated 12-bit outputs are required with low crosstalk (<2.4nV•s). Choose the LZ suffix for applications necessitating a zero-scale power-on state. Verify that the 2.5V internal reference span fits the signal requirements, or consider LMX/HZ variants for mid-scale reset or different voltage spans. Ensure the 14-lead DFN thermal characteristics suit the PCB layout.

Part Context

This component belongs to the LTC2636 family of octal DACs available in 8-, 10-, and 12-bit resolutions. Variants exist in both 14-lead DFN and 16-lead MSOP packages. The family distinguishes between 'L' grade parts (2.7V–5.5V supply, 2.5V FS) and 'H' grade parts (4.5V–5.5V supply, 4.096V FS). Temperature grades include C (Commercial), I (Industrial), and H (Automotive).

Replacement Considerations

Publicly confirmed substitute part numbers are not provided in the source documentation. Cross-referencing requires matching the octal configuration, 12-bit resolution, DFN package, and specific power-on reset behavior.