LTC2634CUD-LZ10#PBF

Overview

The LTC2634CUD-LZ10#PBF is a quad 10-bit voltage output digital-to-analog converter (DAC) from Analog Devices. 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 2.7V to 5.5V supply and includes rail-to-rail output buffers guaranteed monotonic over the commercial temperature range of 0°C to 70°C. Communication is handled via a 3-wire SPI/MICROWIRE compatible interface supporting clock rates up to 50MHz. Key electrical parameters include a settling time of 3.8µs, maximum integral nonlinearity (INL) of ±1 LSB, and differential nonlinearity (DNL) of ±0.5 LSB.

Feature Summary

• Quad 10-bit DAC architecture with integrated 2.5V precision reference
• Rail-to-rail output buffers with guaranteed monotonicity
• Power-on reset to zero-scale in internal reference mode
• 3-wire serial interface with 50MHz clock rate capability

Applications

• Mobile communications systems
• Process control and industrial automation
• Automatic test equipment
• Portable battery-powered equipment

Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance and RoHS adherence. Confirm the C-grade designation matches the required 0°C to 70°C operating temperature for the target application environment. Ensure the LZ10 configuration aligns with the need for zero-scale power-on reset behavior.

Selection Notes

Select this component when a quad-channel DAC with low power consumption and high accuracy is required. The LZ10 variant is appropriate for applications necessitating a safe zero-state upon power-up. Consider the H-grade variants if operation below 0°C or above 70°C is required, or the MI/MX variants if mid-scale reset is preferred.

Part Context

This part belongs to the LTC2634 family, which offers 12-, 10-, and 8-bit resolutions in both 16-lead QFN and 10-lead MSOP packages. The CUD package code specifies the 16-lead QFN form factor. The LZ10 designation specifically denotes the 10-bit resolution, 2.5V full-scale internal reference, and zero-scale power-on reset configuration within the commercial temperature grade.

Replacement Considerations

Direct replacements within the same family include LTC2634CUD-LMI10#PBF (mid-scale reset) or LTC2634CUD-HZ10#PBF (automotive grade). Cross-family alternatives require verification of pin compatibility and electrical specifications against the original design requirements.