LTC2637IDE-LZ8#TRPBF

Overview

The LTC2637IDE-LZ8#TRPBF is an octal 8-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features an integrated precision reference with a full-scale output of 2.5V and operates on a single 2.7V to 5.5V supply. The device utilizes a 2-wire I2C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. Key electrical specifications include a maximum integral nonlinearity (INL) error of ±0.5 LSB, a settling time of 4.1µs at 3V, and a typical power consumption of 100µA per DAC channel at 3V. It incorporates double-buffered data latches and a power-on reset circuit configured to zero-scale.

Feature Summary

• Octal architecture with 8 independent 8-bit DAC channels in a single package
• Integrated 2.5V precision reference with 10ppm/°C temperature coefficient
• Rail-to-rail output buffers guaranteed monotonic over –40°C to 85°C
• Ultralow crosstalk between DACs (<3nV•s) and double-buffered data latches

Applications

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

Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging containing 2500 pieces. Confirm the 'I' grade designation corresponds to the industrial temperature range of –40°C to 85°C. Ensure the 'L' suffix matches the required 2.5V full-scale internal reference configuration for the target application voltage constraints.

Selection Notes

Select this part when eight low-channel-count DACs are required in a compact footprint. The 8-bit resolution suits applications where high speed and low power are prioritized over extreme accuracy. Verify that the 2.5V internal reference span meets the system's output voltage requirements, as the 'H' grade provides 4.096V if higher swing is needed.

Part Context

This component belongs to the LTC2637 family, which offers 8-, 10-, and 12-bit resolutions in both DFN and MSOP packages. The IDE variant specifically denotes the Industrial temperature grade housed in a 16-lead MSOP package. It shares the same core architecture as commercial and automotive grades but is optimized for broader environmental operating conditions.

Replacement Considerations

Publicly confirmed parameter-equivalent substitutes listed by distributors include LTC2637IDE-HMI8#PBF and LTC2637IDE-HMX8#PBF. Note that these alternatives differ in power-on reset behavior or reference mode compared to the LZ8 configuration.