LTC2634CUD-LMI10#PBF

Overview

The LTC2634CUD-LMI10#PBF is a quad 10-bit voltage output digital-to-analog converter (DAC) from Analog Devices, housed in a 16-lead 3mm × 3mm QFN package. 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 includes rail-to-rail output buffers, guaranteed monotonicity over the -40°C to 125°C range, and communicates via a 3-wire SPI/MICROWIRE interface with clock rates up to 50MHz. Power-on reset defaults to mid-scale in internal reference mode.

Feature Summary

• Quad 10-bit resolution with ±1 LSB maximum Integral Nonlinearity (INL)
• Integrated 10ppm/°C precision reference for 2.5V full-scale output
• Rail-to-rail buffered outputs with ultralow crosstalk (2.4nV•s)
• Power-on reset to mid-scale in internal reference mode

Applications

• Mobile communications
• Process control and industrial automation
• Automatic test equipment
• Portable equipment
• Automotive applications

Procurement Notes

Verify the specific ordering suffix #PBF indicates lead-free compliance and RoHS adherence. Confirm the C temperature grade matches commercial requirements (0°C to 70°C). Ensure the LMI configuration aligns with the need for mid-scale power-on reset behavior in internal reference mode.

Selection Notes

Select this part when a quad DAC with 10-bit accuracy and low INL is required. The LMI suffix ensures mid-scale initialization upon power-up, suitable for systems where zero-scale is not mandatory. Verify that the 2.5V internal reference meets system voltage swing requirements compared to the H-series 4.096V option.

Part Context

This component belongs to the LTC2634 family of quad DACs, which offers variations in resolution (8, 10, or 12 bits), temperature grades (C, I, H), and package types (QFN, MSOP). The CUD designation specifies the commercial temperature grade and 16-lead QFN packaging.

Replacement Considerations

Direct substitutes within the same family include LTC2634CUD-LMX10#PBF (external reference reset) or LTC2634CUD-LZ10#PBF (zero-scale reset). For higher resolution, consider LTC2634CUD-LMI12#PBF; for lower resolution, LTC2634CUD-LMI8#PBF.