LTC2635CUD-LMO12#TRPBF

Overview

The LTC2635CUD-LMO12#TRPBF is a quad 12-bit voltage-output digital-to-analog converter (DAC) from Analog Devices Inc., housed in a 16-lead 3mm × 3mm QFN package. It features an integrated precision reference with a full-scale output of 2.5V and a temperature coefficient of 10ppm/°C. The device operates on a single supply ranging from 2.7V to 5.5V and communicates via a 2-wire I²C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. Key electrical specifications include a maximum integral nonlinearity error of ±2.5 LSB, rail-to-rail output buffers, and guaranteed monotonicity over the commercial temperature range of 0°C to 70°C.

Feature Summary

• Quad 12-bit resolution with integrated 2.5V precision reference (10ppm/°C drift)
• Power-on reset configured for mid-scale output with DAC outputs in high-impedance state
• I²C interface with selectable slave addresses via CA0, CA1, and CA2 pins
• Rail-to-rail output buffers with ultralow crosstalk (3nV•s typical)

Applications

• Mobile communications systems
• Process control and industrial automation
• Power supply margining
• Portable equipment

Procurement Notes

Verify the specific ordering suffix LMO against the manufacturer's documentation to confirm the power-on reset behavior. The LMO option uniquely resets to mid-scale while placing all DAC outputs in a high-impedance state. Ensure the procurement channel provides the #TRPBF tape and reel packaging specification if automated assembly is required.

Selection Notes

Select this component when a quad-channel DAC with an internal 2.5V reference is required. The LMO suffix is critical for applications needing a safe high-impedance output state upon power-up. For higher voltage swings, consider the LTC2635-H series which supports a 4.096V full-scale output but requires a minimum 4.5V supply.

Part Context

This part belongs to the LTC2635 family of quad DACs available in 12-, 10-, and 8-bit resolutions. The 'L' designation indicates the 2.5V full-scale variant powered by a 2.7V–5.5V supply. The 'UD' suffix denotes the 16-pin QFN package, while 'MSE' would indicate the 10-lead MSOP package. The '#TRPBF' suffix confirms lead-free construction and tape-and-reel delivery.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult Analog Devices marketing or technical support for alternative options within the same product family or cross-reference compatible devices based on specific pinout and electrical requirements.