LTC2637HMS-LZ10#PBF

Overview

The LTC2637HMS-LZ10#PBF is an octal, 10-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features a high-accuracy internal reference with a full-scale output of 4.096V and a temperature coefficient of 10ppm/°C. The device operates on a single supply voltage ranging from 4.5V to 5.5V. It communicates via a 2-wire I2C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. Key electrical specifications include a maximum integral nonlinearity (INL) error of ±1 LSB, a settling time of 4.3µs at 3V (typical), and rail-to-rail output buffers that are guaranteed monotonic over the operating temperature range.

Feature Summary

• Octal architecture with 10-bit resolution and integrated 4.096V precision reference
• Rail-to-rail output buffers guaranteed monotonic from -40°C to 125°C
• Ultralow DAC-to-DAC crosstalk specified at 3nV•s typical
• Power-on reset circuit configured to initialize outputs to zero-scale

Applications

• Process control and industrial automation systems
• Automatic test equipment requiring multi-channel signal generation
• Portable battery-powered instrumentation
• Automotive electronic control units

Procurement Notes

Verify the specific suffix configuration against the manufacturer's ordering guide to ensure correct package type, temperature grade, and power-on reset behavior. Confirm that the application supply voltage meets the minimum requirement of 4.5V for the H-grade variant. Check for availability constraints as distribution status may vary by region.

Selection Notes

Select this component when multiple isolated analog outputs are required within a compact footprint. The H-grade designation indicates suitability for automotive environments up to 125°C junction temperature. Ensure the system logic levels are compatible with the I2C interface requirements defined in the datasheet timing characteristics.

Part Context

This part belongs to the LTC2637 family, which offers 8-, 10-, and 12-bit resolutions in both DFN and MSOP packages. The 'H' suffix denotes the automotive temperature grade (-40°C to 125°C), while 'LZ' specifies the 4.096V full-scale internal reference with zero-scale power-on reset. The 'MS' indicates the 16-lead MSOP package format.

Replacement Considerations

Direct pin-compatible alternatives within the same family include the LTC2637HMS-LZ12#PBF for higher 12-bit resolution or the LTC2637HMS-LZ8#PBF for 8-bit resolution. Verify that the replacement maintains the required I2C address configuration and power-on reset state.