LTC2636CDE-LMI8#TRPBF

Overview

The LTC2636CDE-LMI8#TRPBF is an octal, 8-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features a 14-lead DFN package and integrates a high-accuracy reference with a temperature coefficient of 10ppm/°C. The device operates on a single supply ranging from 2.7V to 5.5V, providing a full-scale output of 2.5V. It utilizes a 3-wire SPI/MICROWIRE-compatible serial interface with clock rates up to 50MHz. Key electrical specifications include a settling time of 3.4µs, integral nonlinearity (INL) of ±0.05 LSB, and differential nonlinearity (DNL) of ±0.5 LSB. The unit draws 0.9mA at 3V and includes power-on reset functionality that initializes outputs to mid-scale.

Feature Summary

• Octal architecture with 8 independent 8-bit DAC channels in a compact 14-lead DFN package
• Integrated 10ppm/°C reference yielding a 2.5V full-scale output range
• Rail-to-rail output buffers guaranteed monotonic over the operating temperature range
• Power-on reset circuit configured to initialize all DAC outputs to mid-scale

Applications

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

Procurement Notes

Verify the specific ordering suffix #TRPBF confirms the tape and reel packaging format containing 2500 pieces. Confirm the C-grade designation aligns with the required commercial operating temperature range of 0°C to 70°C for the target application environment.

Selection Notes

Select this part when eight low-cost, 8-bit channels are required within a small footprint. The internal 2.5V reference simplifies design by eliminating external components. Ensure the system logic levels are compatible with the 3-wire SPI interface and that the 50MHz clock speed meets data throughput requirements.

Part Context

This component belongs to the LTC2636 family, which offers variations in resolution (8, 10, or 12 bits), package type (DFN or MSOP), and power-on reset behavior. The CDE-LMI8 variant specifically denotes the commercial temperature grade, 14-lead DFN package, mid-scale reset configuration, and 8-bit resolution.

Replacement Considerations

Compatible substitutes within the same family include LTC2636CDE-LMX8#TRPBF for external reference operation or LTC2636CDE-LZ8#TRPBF for zero-scale power-on reset. Higher resolution options such as LTC2636CDE-LMI10#TRPBF provide improved linearity but retain the same pinout.