LTC2634HMSE-LZ8#TRPBF

Overview

The LTC2634HMSE-LZ8#TRPBF is a quad 8-bit voltage output digital-to-analog converter (DAC) in a 10-lead MSOP package. It features an integrated precision reference with a full-scale output of 2.5V and operates from a single 2.7V to 5.5V supply. The device utilizes a 3-wire SPI/MICROWIRE compatible interface with clock rates up to 50MHz. Key electrical parameters include a maximum integral nonlinearity (INL) of ±0.5 LSB, a typical settling time of 3.3µs at 3V, and a supply current of 0.6mA. It incorporates double-buffered data latches and resets to zero-scale upon power-up.

Feature Summary

• Quad 8-bit DACs with rail-to-rail output buffers and integrated 10ppm/°C precision reference
• Maximum INL error of ±0.5 LSB and guaranteed monotonic operation over the temperature range
• Power-on reset circuitry configured to clear outputs to zero-scale
• Ultralow crosstalk between DAC channels (2.4nV•s typical)

Applications

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

Procurement Notes

Verify the specific ordering suffix #TRPBF indicates a tape and reel packaging configuration containing 2,500 units. Confirm that the 'H' temperature grade designation corresponds to the automotive range of –40°C to 125°C as defined in the manufacturer's selection guide. Ensure compatibility with the 10-lead MSOP physical footprint during procurement planning.

Selection Notes

Select this part for applications requiring four independent 8-bit outputs with low noise and high accuracy. The LZ suffix ensures the outputs initialize to zero volts upon power-up, which is critical for protecting downstream circuits. Verify that the system supply voltage falls within the 2.7V to 5.5V range required for the LTC2634-L series devices.

Part Context

This component belongs to the LTC2634 family of quad DACs, which offers various resolutions (8-, 10-, and 12-bit) and package options. The HMSE designation specifically identifies the H-grade automotive temperature variant housed in a 10-lead MSOP package with an 8-bit resolution and zero-scale power-on reset behavior.

Replacement Considerations

Direct replacements within the same family include other LTC2634 variants with different resolutions or reset behaviors, such as the LTC2634HMSE-LZ10#TRPBF for 10-bit resolution. Cross-package alternatives like the QFN version (LTC2634HUD...) require schematic and layout modifications.