LTC2637CMS-HZ8#PBF

Overview

The LTC2637CMS-HZ8#PBF is an octal 8-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 zero-scale in internal reference mode. It supports I2C-compatible serial communication with clock rates up to 400kHz. The part is designed for applications requiring low power consumption, guaranteed monotonicity, and ultralow crosstalk between channels.

Feature Summary

• Octal 8-bit resolution with rail-to-rail output buffers
• Power-on reset to zero-scale in internal reference mode
• I2C interface supporting standard (100kHz) and fast (400kHz) modes
• Commercial temperature grade (0°C to 70°C)

Applications

• Mobile communications
• Process control and industrial automation
• Automatic test equipment

Procurement Notes

Verify the specific ordering suffix CMS-HZ8#PBF against the manufacturer's current product selection guide to confirm availability and exact pinout configuration. Ensure the design accounts for the commercial temperature range limitations if operating outside 0°C to 70°C.

Selection Notes

Select this component when eight independent 8-bit DAC outputs are required in a compact 16-lead MSOP footprint. The HZ8 suffix indicates a zero-scale power-on reset behavior, which differs from mid-scale options. Confirm that the I2C address pins (CA0, CA1, CA2) can be configured to avoid bus conflicts in the target system.

Part Context

This part belongs to the LTC2637 family of octal DACs, which also includes 10-bit and 12-bit variants. The 'L' designation typically refers to a 2.5V full-scale internal reference version, while 'H' denotes a 4.096V version. The datasheet confirms the existence of C-grade parts in MSOP packages, validating the CMS prefix structure.

Replacement Considerations

Direct substitutes include other LTC2637 variants with different resolutions or reset behaviors, such as LTC2637IMS-HZ8#PBF for industrial temperature range or LTC2637CMS-LZ8#PBF for 2.5V full-scale operation. Cross-model compatibility requires verifying I2C addressing and supply voltage requirements.