LTC2635HMSE-LMO8#PBF

Overview

The LTC2635HMSE-LMO8#PBF is a quad 8-bit voltage-output digital-to-analog converter (DAC) from Analog Devices Inc., housed in a 10-lead MSOP package. It features an integrated precision reference with a full-scale output of 2.5V and operates on a single 2.7V to 5.5V supply. The device includes rail-to-rail output buffers, guaranteed monotonicity over the –40°C to 125°C automotive temperature range, and communicates via a 2-wire I²C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. Power-on reset options include high-impedance state for LMO variants.

Feature Summary

• Quad 8-Bit Resolution with Integrated 2.5V Reference
• Automotive Temperature Grade (–40°C to 125°C)
• Power-On Reset to High-Impedance State (LMO Option)
• I²C Interface with Standard and Fast Mode Support

Applications

• Mobile Communications
• Process Control and Industrial Automation
• Power Supply Margining
• Portable Equipment
• Automotive Systems

Procurement Notes

Verify the specific ordering suffix 'LMO' confirms the power-on reset behavior where DAC outputs enter a high-impedance state upon power-up, distinct from zero-scale or mid-scale reset options. Confirm the 'H' grade indicates the automotive temperature range specification. Ensure the '#PBF' suffix denotes lead-free compliance as per manufacturer standards.

Selection Notes

Select this part when four independent 8-bit DAC channels are required in a compact MSOP footprint. The LMO suffix is critical if system startup safety requires outputs to be high-impedance rather than a defined voltage level. The H-grade variant is necessary for environments exceeding commercial temperature limits. Verify I²C address configuration via CA pins matches system requirements.

Part Context

This component belongs to the LTC2635 family of quad DACs, which also offers 10-bit and 12-bit resolutions. The HMSE designation specifies the Automotive grade (H) and 10-lead MSOP package (MSE). Other variants include QFN packages and different reset behaviors (Z, MI, MX), allowing flexibility in power-up states and package size based on board space constraints.

Replacement Considerations

Direct pin-compatible replacements within the same family include LTC2635HMSE-LMI8#PBF (Mid-Scale reset) or LTC2635HMSE-LZ8#PBF (Zero-Scale reset). For non-reset variations, verify that the alternative part's power-on state meets system safety requirements before substitution.