LTC2637CMS-LZ10#PBF

Overview

The LTC2637CMS-LZ10#PBF is an octal 10-bit voltage-output digital-to-analog converter (DAC) from Analog Devices Inc. It features a 16-lead MSOP package and operates within the commercial temperature range of 0°C to 70°C. The device incorporates a power-on reset circuit configured to initialize outputs to zero-scale when using the internal reference. It supports I2C communication with clock rates up to 400kHz and includes double-buffered data latches for glitch-free updates.

Feature Summary

• Octal architecture with 10-bit resolution per channel
• Power-on reset to zero-scale in internal reference mode
• Commercial temperature grade (0°C to 70°C)
• 16-lead MSOP surface-mount package

Applications

• Mobile communications systems
• Process control and industrial automation
• Automatic test equipment
• Portable battery-powered equipment
• Automotive electronics
• Optical networking devices

Procurement Notes

Verify that the specific ordering suffix CMS corresponds to the Commercial temperature grade and MSOP package type as defined in the manufacturer's selection guide. Confirm that the LZ suffix correctly specifies the zero-scale power-on reset behavior for internal reference applications before finalizing procurement specifications.

Selection Notes

Select this part when eight independent 10-bit voltage outputs are required with low-cost commercial-grade performance. Ensure the system supply voltage falls between 2.7V and 5.5V, as this variant utilizes the LTC2637-L full-scale reference configuration. Verify that the I2C bus timing requirements align with the specified setup and hold times for reliable data transmission.

Part Context

This component belongs to the LTC2637 family of octal DACs, which also offers 8-bit and 12-bit resolutions. The family shares identical pinouts and core functionality, differing primarily in resolution, internal reference voltage options (L or H grades), and temperature ratings (C, I, or H). The MSOP package provides a compact footprint suitable for space-constrained designs.

Replacement Considerations

Direct functional equivalents include other LTC2637 variants with matching resolution and package types, such as the LTC2637IMS-LZ10#PBF for industrial temperature ranges. Cross-model substitution requires verifying that the replacement maintains the same power-on reset state and I2C address configuration.