LTC2636CMS-LZ12#PBF

Overview

The LTC2636CMS-LZ12#PBF is an octal 12-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features an integrated high-accuracy reference with a temperature coefficient of 10ppm/°C, providing a full-scale output of 2.5V. The device operates on a single supply voltage ranging from 2.7V to 5.5V and utilizes a 3-wire SPI/MICROWIRE-compatible serial interface with clock rates up to 50MHz. It includes double-buffered data latches and guarantees monotonicity over the commercial temperature range of 0°C to 70°C. The component is housed in a 14-lead 4mm × 3mm DFN package.

Feature Summary

• Octal 12-Bit Resolution: Provides eight independent 12-bit DAC channels with ±2.5LSB maximum integral nonlinearity error.
• Integrated Precision Reference: Features an internal 10ppm/°C reference setting a 2.5V full-scale output.
• Rail-to-Rail Output Buffer: Ensures rail-to-rail operation with guaranteed monotonicity across the operating temperature range.
• Power-On Reset to Zero-Scale: Automatically resets all DAC outputs to zero-scale upon power-up for consistent system initialization.

Applications

• Mobile Communications
• Process Control and Industrial Automation
• Automatic Test Equipment
• Portable Equipment
• Automotive

Procurement Notes

Verify the specific ordering suffix #PBF indicates lead-free design compliance. Confirm the CMS designation corresponds to the MSOP package variant if required, as datasheet examples primarily detail the DE (DFN) package. Ensure the LZ12 suffix matches the requirement for zero-scale reset and 12-bit resolution. Check availability for the C-grade commercial temperature specification.

Selection Notes

Select this part when eight independent 12-bit channels are required with a fixed 2.5V internal reference. The LZ suffix is critical for applications requiring a zero-scale power-on reset state. Compare settling times of 4.4µs against system speed requirements. Consider the H-grade variants if automotive temperature ranges (-40°C to 125°C) or higher 4.096V full-scale outputs are needed instead of the C-grade commercial option.

Part Context

The LTC2636 family comprises octal DACs available in 12-, 10-, and 8-bit resolutions. Variants include the LTC2636-L series with 2.5V full-scale output and the LTC2636-H series with 4.096V full-scale output. Power-on reset options include mid-scale (MI/MX) or zero-scale (Z). Packages include 14-lead DFN and 16-lead MSOP, with the latter offering additional CLR and LDAC control pins.

Replacement Considerations

Public confirmed substitute part numbers only; omit otherwise.

FAQ

What is the power-on reset behavior for the LTC2636CMS-LZ12?

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

What is the maximum serial clock frequency supported by the LTC2636?

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

Does the LTC2636CMS-LZ12 guarantee monotonicity?

Yes, the device is guaranteed monotonic over the specified operating temperature range.