LTC2637HDE-LZ10#TRPBF

Overview

The LTC2637HDE-LZ10#TRPBF 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 operates on a single 4.5V to 5.5V supply. The device utilizes a rail-to-rail output buffer and guarantees monotonicity across the –40°C to 125°C temperature range. Communication is handled via a 2-wire I2C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. Key electrical specifications include a maximum integral nonlinearity error of ±1 LSB, a settling time of 4.3µs at 5V, and ultralow crosstalk between channels (<3nV•s).

Feature Summary

• Octal architecture with 10-bit resolution and rail-to-rail buffered outputs.
• Integrated 4.096V precision reference with 10ppm/°C drift coefficient.
• I2C-compatible serial interface with selectable slave addresses via CA0 pin.
• Power-on reset circuit configured to zero-scale in internal reference mode.

Applications

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

Procurement Notes

Verify that the ordering suffix #TRPBF corresponds to the tape and reel packaging format containing 2500 pieces. Confirm the H-grade designation matches the required automotive temperature range of –40°C to 125°C. Ensure the DE package type aligns with the 14-lead DFN footprint requirements for the target PCB layout.

Selection Notes

Select this part when eight independent DAC channels are required in a compact form factor. The H-grade variant is necessary for applications operating above 85°C or requiring automotive qualification. The LZ10 suffix indicates a 10-bit resolution with a zero-scale power-on reset state, which differs from mid-scale options available in other variants.

Part Context

This component belongs to the LTC2637 family, which includes 12-bit, 10-bit, and 8-bit resolutions. The 'H' suffix denotes the high-temperature grade suitable for automotive environments, while 'L' denotes the low-voltage industrial grade. The 'DE' indicates the 14-lead DFN package, whereas 'MS' indicates the 16-lead MSOP package.

Replacement Considerations

Direct substitutes within the same family include LTC2637HDE-LZ12#TRPBF (12-bit) and LTC2637HDE-LZ8#TRPBF (8-bit), provided the resolution difference is acceptable. For different package types, the LTC2637HMS-LZ10#TRPBF offers identical electrical performance in a 16-lead MSOP package.