LTC2636IDE-HZ8#PBF

Overview

The LTC2636IDE-HZ8#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, 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 and a power-on reset circuit that initializes outputs to zero-scale. The component is housed in a 14-lead DFN package and supports industrial operating temperatures from -40°C to +85°C.

Feature Summary

• Octal 8-Bit Architecture: Contains eight independent DAC channels with rail-to-rail output buffers.
• Integrated Precision Reference: Features an internal 4.096V full-scale reference with ±10ppm/°C drift.
• High-Speed Interface: Communicates via a 3-wire serial interface supporting SCK frequencies up to 50MHz.
• Power-On Reset: Initializes all DAC outputs to zero-scale upon power-up for consistent system start-up.

Applications

• Process Control and Industrial Automation
• Automatic Test Equipment
• Portable Equipment

Procurement Notes

Verify the specific ordering suffix #PBF indicates lead-free construction and tape-and-reel packaging specifications. Confirm the H-grade designation aligns with the required 4.5V to 5.5V supply range and 4.096V full-scale output. Ensure the IDE package type matches the PCB footprint requirements for the 14-lead DFN form factor.

Selection Notes

Select this part when an octal configuration with an integrated 4.096V reference is required. The H-grade variant necessitates a minimum supply voltage of 4.5V, unlike the L-grade which operates down to 2.7V. The Z-suffix ensures zero-scale initialization, which is critical for applications where downstream circuits must remain inactive during power-up sequences.

Part Context

This component belongs to the LTC2636 family of octal DACs, which offers various combinations of resolution (8-, 10-, or 12-bit), reset behaviors, and full-scale voltages. The IDE-HZ8#PBF specifically denotes the industrial temperature grade, zero-scale reset, 8-bit resolution, and DFN package within this series.

Replacement Considerations

Direct substitutes within the same family include other LTC2636 variants with different resolutions or reset modes, such as LTC2636IDE-HZ12#PBF for 12-bit resolution. Cross-family replacements require matching the octal channel count, SPI interface, and supply voltage constraints.