LTC2636IDE-HMX12#PBF

Overview

The LTC2636IDE-HMX12#PBF is an octal 12-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features an integrated 4.096V full-scale reference with a temperature coefficient of 10ppm/°C. The device operates on a single supply voltage ranging from 4.5V to 5.5V and communicates via a 3-wire SPI/MICROWIRE-compatible interface supporting clock rates up to 50MHz. It includes double-buffered data latches, power-on reset to mid-scale in external reference mode, and rail-to-rail output buffers guaranteed monotonic over the automotive temperature range of –40°C to 125°C.

Feature Summary

• Octal 12-Bit Resolution: Provides eight independent 12-bit DAC channels with integral nonlinearity (INL) error of ±2.5 LSB.
• Integrated Reference: Features a high-accuracy internal reference yielding a 4.096V full-scale output with 10ppm/°C drift.
• Automotive Grade: Operates reliably within the extended temperature range of –40°C to 125°C.
• Power-On Reset: Configured for mid-scale output upon power-up when using external reference mode.

Applications

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

Procurement Notes

Verify the specific ordering suffix HMX12#PBF against the manufacturer's current documentation to confirm package type (MSOP), lead-free status, and exact power-on reset behavior. Ensure supply voltage constraints (4.5V–5.5V) align with system design requirements before procurement.

Selection Notes

Select this component when eight synchronized 12-bit outputs are required with high precision and automotive temperature tolerance. The H-series designation indicates a 4.096V internal reference, necessitating a minimum 4.5V supply. The MX suffix specifies mid-scale reset in external reference mode; choose Z or MI suffixes if zero-scale or internal-reference mid-scale reset is preferred.

Part Context

This part belongs to the LTC2636 family of octal DACs, which also includes variants with different resolutions (8-bit, 10-bit), reference voltages (2.5V L-series), and temperature grades (Commercial C, Industrial I). The IDE prefix denotes the 16-lead MSOP package variant with industrial/automotive temperature capabilities.

Replacement Considerations

Direct pin-compatible substitutes within the same family include LTC2636IDE-LMX12#PBF (2.5V ref, lower supply) or LTC2636IDE-HMZ12#PBF (zero-scale reset). Cross-family replacements like LTC2637 require I2C interface adaptation.