LTC2637HMS-LZ10#TRPBF

Overview

The LTC2637HMS-LZ10#TRPBF is an octal 10-bit voltage-output digital-to-analog converter (DAC) from Analog Devices Inc., housed in a 16-lead MSOP package. It features an integrated precision reference with a full-scale output of 4.096V and operates on a single 4.5V to 5.5V supply. The device 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 for 10-bit resolution, and rail-to-rail buffered outputs guaranteed monotonic over the –40°C to 125°C temperature range.

Feature Summary

• Octal architecture with 10-bit resolution and rail-to-rail buffered voltage outputs
• Integrated 4.096V precision reference with ±10ppm/°C temperature coefficient
• I2C-compatible serial interface with selectable slave addresses via CA0–CA2 pins
• Power-on reset circuit configured to zero-scale in internal reference mode

Applications

• Mobile communications systems
• Process control and industrial automation
• Automatic test equipment
• Portable battery-powered equipment
• Automotive electronics
• Optical networking devices

Procurement Notes

Verify the specific ordering suffix #TRPBF indicates tape and reel packaging containing 2500 pieces. Confirm the 'H' grade designation matches the required automotive temperature range of –40°C to 125°C. Ensure the 'LZ' power-on reset configuration aligns with system startup requirements for zero-scale initialization.

Selection Notes

Select this part when eight independent 10-bit channels are required in a compact surface-mount footprint. The H-grade variant is necessary for applications operating above 85°C or requiring automotive qualification. Verify that the 4.5V minimum supply voltage is compatible with the system power rails, as the L-grade variant supports lower voltages down to 2.7V.

Part Context

This component belongs to the LTC2637 family, which offers 8-, 10-, and 12-bit resolutions in both DFN and MSOP packages. The MSOP package provides a 16-lead form factor with additional address selection pins compared to the 14-lead DFN version. The family shares common electrical characteristics but varies in resolution, package type, and power-on reset behavior based on the ordering code.

Replacement Considerations

Direct pin-compatible replacements within the same family include LTC2637HMS-LZ8#TRPBF (8-bit) and LTC2637HMS-LZ12#TRPBF (12-bit). For external reference configurations, consider the LTC2637HMX variants. Cross-family SPI-based DACs like the LTC2636 require significant schematic and firmware modifications due to different interface protocols.