LTC2637HMS-HZ10#TRPBF

Overview

The LTC2637HMS-HZ10#TRPBF is an octal 10-bit voltage-output digital-to-analog converter (DAC) from Analog Devices Inc. It features a high-accuracy internal reference with a temperature coefficient of 10ppm/°C, providing a full-scale output of 4.096V. The device operates on a single supply voltage ranging from 4.5V to 5.5V and communicates via a 2-wire I2C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. Each DAC channel includes a rail-to-rail output buffer guaranteed monotonic over the operating temperature range. The part incorporates double-buffered data latches and a power-on reset circuit configured to initialize outputs to mid-scale in external reference mode.

Feature Summary

• Octal architecture with 10-bit resolution per channel
• Integrated 4.096V full-scale reference with ±10ppm/°C drift
• Rail-to-rail buffered outputs guaranteed monotonic from –40°C to 125°C
• Ultralow DAC-to-DAC crosstalk (<3nV•s typical)

Applications

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

Procurement Notes

Verify the specific ordering suffix #TRPBF indicates tape and reel packaging containing 2500 pieces. Confirm the H-grade designation corresponds to the automotive temperature range of –40°C to 125°C. Ensure the MS package type matches the 16-lead MSOP footprint requirements for the target PCB layout. Cross-reference the HZ10 code to confirm the zero-scale power-on reset behavior and 10-bit resolution configuration.

Selection Notes

Select this component when eight independent voltage outputs are required within a compact surface-mount form factor. The H-grade variant is necessary for applications requiring operation up to 125°C ambient temperature. The Z suffix dictates a power-on reset state of zero-scale for internal reference configurations, which differs from mid-scale options. Verify that the system supply voltage remains within the 4.5V to 5.5V window specified for the H-series devices to ensure proper reference functionality.

Part Context

This part belongs to the LTC2637 family of octal DACs, available in 8-, 10-, and 12-bit resolutions. The family distinguishes between L-grade (2.5V FS, 2.7V–5.5V supply) and H-grade (4.096V FS, 4.5V–5.5V supply) variants. Package options include 14-lead DFN and 16-lead MSOP. Temperature grades cover commercial (C), industrial (I), and automotive (H) ranges. The HZ10 specifically denotes the H-grade, 10-bit resolution, zero-scale reset, and MSOP package combination.

Replacement Considerations

Direct pin-compatible substitutes within the same family include LTC2637HMI10#TRPBF (mid-scale reset) or LTC2637HZ10#TRPBF (DFN package). For different resolutions, LTC2637HMX10#TRPBF offers external reference capability. Ensure any replacement matches the specific power-on reset behavior and temperature grade requirements of the original design.