LTC2637CDE-HZ10#PBF

Overview

The LTC2637CDE-HZ10#PBF is an octal 10-bit voltage-output digital-to-analog converter (DAC) from Analog Devices Inc. It features an integrated precision reference with a full-scale output of 4.096V and a temperature coefficient of 10ppm/°C. The device operates on a single supply voltage ranging from 4.5V to 5.5V and communicates via a 2-wire I2C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. It includes double-buffered data latches, power-on reset capabilities, and rail-to-rail output buffers guaranteed monotonic over the commercial temperature range of 0°C to 70°C.

Feature Summary

• Octal architecture providing eight independent 10-bit DAC channels in a compact package
• Integrated 4.096V precision reference with low drift of ±10ppm/°C
• I2C-compatible serial interface with selectable slave addresses via CA0 pin
• Power-on reset circuit configurable for zero-scale or mid-scale initialization

Applications

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

Procurement Notes

Verify that the C suffix corresponds to the commercial temperature grade (0°C to 70°C) rather than the industrial or automotive grades. Confirm the DE package designation matches the required 14-lead DFN footprint. Ensure the H suffix indicates the 4.096V internal reference configuration suitable for 4.5V to 5.5V supply rails. Check for specific lead-free and RoHS compliance markings if required by assembly standards.

Selection Notes

Select this part when multiple low-channel-count DACs are needed in a small form factor. The 10-bit resolution offers a balance between cost and accuracy for general-purpose analog control. The I2C interface simplifies PCB routing compared to SPI variants. Consider the 4.5V minimum supply requirement; if lower voltage operation is needed, the LTC2637-L series should be evaluated instead.

Part Context

This component belongs to the LTC2637 family of octal DACs. Variants differ primarily in resolution (8, 10, or 12 bits), internal reference voltage (2.5V for L-grade, 4.096V for H-grade), and operating temperature ranges (C, I, or H grades). The CDE-HZ10#PBF specifically denotes the commercial grade, DFN package, zero-scale reset, and 10-bit resolution.

Replacement Considerations

Direct substitutes within the same family include LTC2637CDE-HZ12#PBF (12-bit) or LTC2637CDE-HZ8#PBF (8-bit), provided pin compatibility and resolution requirements align. For external reference applications, the LTC2637CDE-HMX10#PBF offers mid-scale reset behavior.