LTC2635CUD-LMO10#PBF

Overview

The LTC2635CUD-LMO10#PBF is a quad 10-bit voltage-output digital-to-analog converter (DAC) from Analog Devices, housed in a 16-lead 3mm × 3mm QFN 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 and guarantees monotonicity over the commercial temperature range of 0°C to 70°C. Communication is handled via a 2-wire I²C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. A key feature is the power-on reset configuration that sets outputs to a high-impedance state upon initialization.

Feature Summary

• Quad 10-bit DAC architecture with integrated 2.5V precision reference
• Power-on reset to High-Impedance state for safe startup
• Rail-to-rail output buffers with guaranteed monotonicity
• I²C interface with selectable slave addresses via CA0/CA1/CA2 pins

Applications

• Mobile communications systems
• Process control and industrial automation
• Portable equipment requiring low power consumption

Procurement Notes

Verify the specific ordering suffix #PBF indicates lead-free construction. Confirm the C-grade designation aligns with the required commercial operating temperature range of 0°C to 70°C. Ensure the LMO suffix requirement for high-impedance power-on reset matches the system design specifications. Check package availability in the 16-pin QFN format.

Selection Notes

Select this component when a quad-channel DAC with integrated reference is needed in a compact QFN footprint. The LMO variant is distinct from other power-on reset options like zero-scale or mid-scale; verify the high-impedance startup behavior is necessary for the application. The 10-bit resolution offers a balance between accuracy and data throughput for general-purpose analog control tasks.

Part Context

This part belongs to the LTC2635 family, which includes 8-bit, 10-bit, and 12-bit variants. The 'L' suffix denotes the 2.5V full-scale internal reference option, while 'H' denotes 4.096V. The 'UD' package code specifies the 16-pin QFN form factor. Other suffixes like MI or MX configure different power-on reset behaviors.

Replacement Considerations

Direct pin-compatible replacements within the same family include LTC2635CUD-LMI10#PBF (mid-scale reset) or LTC2635CUD-LZ10#PBF (zero-scale reset). Verify that the alternative reset behavior does not conflict with downstream circuit requirements during power-up.