LTC2637IDE-LMX10#TRPBF

Overview

The LTC2637IDE-LMX10#TRPBF is an octal 10-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features an integrated precision reference with a temperature coefficient of 10ppm/°C, providing a full-scale output of 4.096V when operating in internal reference mode. The device supports a supply voltage range of 4.5V to 5.5V and 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 ±1 LSB, and ultralow DAC-to-DAC crosstalk below 3nV•s. The part is housed in a 16-lead MSOP package.

Feature Summary

• Octal architecture with 8 independent 10-bit voltage outputs
• Integrated 10ppm/°C precision reference for 4.096V full-scale output
• I²C interface with selectable power-on reset to mid-scale in external reference mode
• Ultralow crosstalk (<3nV•s) and double-buffered data latches

Applications

• Mobile communications systems
• Process control and industrial automation
• Automatic test equipment
• Portable instrumentation
• Automotive electronics
• Optical networking

Procurement Notes

Verify the specific ordering suffix #TRPBF indicates tape and reel packaging containing 2500 pieces. Confirm that the 'I' grade designation matches the required industrial temperature range of –40°C to 85°C for the application environment. Ensure the external reference configuration aligns with the LMX power-on reset behavior defined in the datasheet.

Selection Notes

Select this component when eight isolated voltage channels are required within a compact footprint. The 10-bit resolution offers a balance between cost and accuracy, suitable for applications not requiring 12-bit precision. The LMX suffix specifically configures the device to reset to mid-scale upon power-up when an external reference is utilized, which may be advantageous for specific system initialization sequences.

Part Context

This part belongs to the LTC2637 family, which includes 12-, 10-, and 8-bit variants. The 'H' suffix in the base model indicates the 4.096V full-scale range powered by 4.5V–5.5V supplies, distinguishing it from the 'L' variant which provides 2.5V full-scale on 2.7V–5.5V supplies. The 'MS' package code denotes the 16-lead MSOP form factor.

Replacement Considerations

Direct pin-compatible substitutes within the same family include LTC2637IDE-LMX10#TRPBF (identical specs, different temp grade if applicable) or other resolutions like LTC2637IDE-HMX12#TRPBF (12-bit) and LTC2637IDE-HMX8#TRPBF (8-bit). Verify that the replacement maintains the same power-on reset behavior and package dimensions.