LTC2634CMSE-LMI12#TRPBF

Overview

The LTC2634CMSE-LMI12#TRPBF is a quad 12-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features an integrated precision reference providing a 2.5V full-scale output and operates on a single 2.7V to 5.5V supply. The device utilizes a 3-wire SPI/MICROWIRE compatible serial interface with clock rates up to 50MHz. Key specifications include rail-to-rail output buffers, guaranteed monotonicity over the temperature range, and a maximum integral nonlinearity error of ±2.5 LSB. The part is housed in a 10-lead MSOP package and incorporates power-on reset logic to initialize outputs to mid-scale.

Feature Summary

• Quad 12-bit resolution with integrated 2.5V precision reference
• SPI/MICROWIRE compatible 3-wire serial interface operating at 50MHz
• Rail-to-rail output buffers with ultralow crosstalk (2.4nV•s)
• Power-on reset to mid-scale in internal reference mode

Applications

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

Procurement Notes

Verify the specific ordering suffix #TRPBF indicates tape and reel packaging containing 2,500 pieces. Confirm the MSE package designation corresponds to the 10-lead MSOP form factor. Ensure the LMI12 configuration matches requirements for 2.5V full-scale output and mid-scale power-on reset behavior. Cross-reference the C-grade temperature rating against application thermal constraints.

Selection Notes

Select this component when four independent 12-bit DAC channels are required in a compact surface-mount package. The internal 2.5V reference eliminates external reference components, reducing board space. Choose this variant over H-grade parts if the system operates within the commercial temperature range and requires lower minimum supply voltages starting at 2.7V rather than 4.5V.

Part Context

This part belongs to the LTC2634 family, which offers variations in resolution (8, 10, or 12 bits), full-scale voltage (2.5V or 4.096V), and power-on reset states. The CMSE suffix identifies the commercial temperature grade and MSOP package, while LMI12 specifies the 2.5V internal reference and mid-scale reset configuration for 12-bit resolution.

Replacement Considerations

Direct pin-compatible replacements within the same family include LTC2634IMSE-LMI12#TRPBF for industrial temperature range or LTC2634HMSE-LMI12#TRPBF for automotive applications. Lower resolution variants like LTC2634CMSE-LMX10#TRPBF may be suitable if 10-bit accuracy suffices.