LTC2636HDE-HZ10#PBF

Overview

The LTC2636HDE-HZ10#PBF is an octal 10-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features an integrated 4.096V full-scale reference with a temperature coefficient of 10ppm/°C. The device operates on a single supply voltage ranging from 4.5V to 5.5V and communicates via a 3-wire SPI/MICROWIRE-compatible interface with clock rates up to 50MHz. It includes a power-on reset circuit that initializes outputs to zero-scale in internal reference mode. The component is housed in a 14-lead plastic DFN package measuring 4mm x 3mm, designed for automotive applications within a –40°C to 125°C operating temperature range.

Feature Summary

• Octal architecture providing eight independent 10-bit DAC channels in a single package
• Integrated high-accuracy reference delivering 4.096V full-scale output with ±10ppm/°C drift
• Power-on reset functionality forces all outputs to zero-scale upon initialization
• Ultralow DAC-to-DAC crosstalk specification of 2.4nV•s typical

Applications

• Automotive systems requiring wide temperature stability
• Process control and industrial automation instrumentation
• Automatic test equipment signal generation
• Optical networking transmission modules

Procurement Notes

Verify the specific ordering suffix HZ10#PBF against official Analog Devices documentation to confirm the hardware clear pin availability and package type. The DE suffix indicates a 14-lead DFN package which lacks the CLR and LDAC pins found in MSOP variants. Ensure supply voltage sequencing adheres to absolute maximum ratings during power-up to prevent latch-up or damage.

Selection Notes

Select this part when eight isolated analog outputs are required with precise zero-scale initialization. The H-grade designation ensures operation across the full automotive temperature range of –40°C to 125°C. Verify that the system supply voltage remains between 4.5V and 5.5V, as lower voltages will not support the 4.096V internal reference configuration.

Part Context

This component belongs to the LTC2636 family of octal DACs, which also includes 8-bit and 12-bit resolution variants. The H-series specifically targets higher voltage swings compared to the L-series 2.5V parts. The Z suffix denotes the zero-scale power-on reset behavior, distinct from MI or MX variants that reset to mid-scale.

Replacement Considerations

LTC2636HDE-LZ10#PBF: Identical electrical performance but resets to mid-scale instead of zero-scale. LTC2636HMS-HZ10#PBF: Same specifications housed in a 16-lead MSOP package with additional CLR and LDAC pins.