LTC2637IMS-HZ10#TRPBF

Overview

The LTC2637IMS-HZ10#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. The device operates on a single 4.5V to 5.5V supply and communicates via a 2-wire I²C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. It includes rail-to-rail output buffers, double-buffered data latches, and a power-on reset circuit configured to reset to zero-scale in internal reference mode.

Feature Summary

• Octal architecture with 8 independent 10-bit DAC channels
• Integrated 10ppm/°C precision reference yielding 4.096V full-scale output
• I²C-compatible serial interface with selectable slave addresses via CA0-CA2 pins
• Rail-to-rail output buffers guaranteed monotonic over –40°C to 125°C

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 IMS designation corresponds to the 16-lead MSOP package and the H grade specifies the 4.5V to 5.5V supply range with 4.096V full-scale output. Ensure the Z suffix confirms the power-on reset behavior is set to zero-scale in internal reference mode.

Selection Notes

Select this part for applications requiring multiple low-drift voltage outputs with minimal external component count. The 10-bit resolution offers a balance between accuracy and speed, with a typical settling time of 4.3µs. Consider the ultralow crosstalk specification (<3nV•s) when designing circuits where adjacent channel switching affects signal integrity. Verify that the I²C bus speed requirements align with the device's support for standard and fast modes.

Part Context

This component belongs to the LTC2637 family, which also includes 12-bit and 8-bit variants. The IMS package variant utilizes a 16-lead MSOP form factor, distinct from the 14-lead DFN option. The H-grade designation differentiates it from the L-grade parts by specifying a higher supply voltage range and a larger full-scale output voltage derived from the internal reference.

Replacement Considerations

Direct pin-compatible substitutes within the same family include the LTC2637IMS-LZ10#TRPBF (2.5V full-scale) or LTC2637IMS-HZ12#TRPBF (12-bit resolution). Cross-family replacements such as the LTC2635 series offer quad-channel configurations but require interface adaptation.