LTC2636HMS-LZ10#PBF

Overview

The LTC2636HMS-LZ10#PBF is an octal 10-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features an integrated 4.096V full-scale reference with a 10ppm/°C temperature coefficient. The device operates on a single 4.5V to 5.5V supply and includes a rail-to-rail output buffer. It utilizes a 3-wire SPI/MICROWIRE-compatible serial interface with clock rates up to 50MHz. Key specifications include ±1 LSB integral nonlinearity, 4.3µs settling time, and ultralow DAC-to-DAC crosstalk (<2.4nV•s). The part is housed in a 16-lead MSOP package and guarantees monotonicity over the automotive temperature range of –40°C to 125°C.

Feature Summary

• Octal 10-Bit Architecture: Eight independent DAC channels with ±1 LSB INL and ±0.5 LSB DNL.
• Integrated High-Accuracy Reference: Internal 4.096V reference with 10ppm/°C drift; supports external reference input.
• Automotive Grade Reliability: Guaranteed monotonic operation across –40°C to 125°C temperature range.
• Power-On Reset to Zero-Scale: Outputs initialize to zero upon power-up to ensure consistent system start-up.

Applications

• Process Control and Industrial Automation
• Automatic Test Equipment
• Portable Equipment

Procurement Notes

Verify the specific suffix 'LZ10' confirms the 10-bit resolution, internal 4.096V reference, and zero-scale power-on reset behavior. Confirm the 'MS' package designation matches the required 16-lead MSOP footprint. Ensure the '#PBF' suffix indicates lead-free compliance for the target assembly process.

Selection Notes

Select this component when eight isolated analog outputs are required with high linearity and low crosstalk. The H-grade variant necessitates a minimum 4.5V supply, distinguishing it from the L-grade 2.7V variants. The LZ suffix is critical if the application requires outputs to default to ground potential during power-up sequences.

Part Context

This part belongs to the LTC2636 family of octal DACs, which also offers 8-bit and 12-bit resolutions. Variants within the family differ by full-scale voltage (2.5V vs 4.096V), power-on reset behavior (Zero vs Mid-scale), and temperature grades (Commercial, Industrial, Automotive). The MSOP package provides additional control pins (CLR, LDAC) not present in the DFN version.

Replacement Considerations

Direct substitutes within the same package and pinout include other LTC2636 variants such as LTC2636HMS-LMI10#PBF or LTC2636HMS-HM10#PBF, provided the power-on reset and reference configuration differences are accommodated in the design.

FAQ

What is the power-on reset state of the LTC2636HMS-LZ10?

The 'Z' suffix indicates that all DAC outputs reset to zero-scale upon power-up.

Does the LTC2636HMS-LZ10 support external references?

Yes, while it has an internal 4.096V reference, it can be configured to use an external reference voltage applied to the REF pin.

What is the maximum serial clock frequency?

The device supports SPI/MICROWIRE compatible interfaces with clock rates up to 50MHz.