LTC2688HCB-16#TRPBF

Overview

The LTC2688HCB-16#TRPBF is a 16-channel, 16-bit voltage output SoftSpan DAC from Analog Devices. It features independently programmable output ranges of 0 V to 5 V, 0 V to 10 V, ±5 V, ±10 V, and ±15 V. The device includes an integrated precision 4.096 V reference with a maximum temperature coefficient of ±5 ppm/°C. Built-in rail-to-rail output buffers guarantee monotonicity and can source or sink up to ±20 mA. It supports SPI and MICROWIRE-compatible interfaces operating at clock rates up to 50 MHz. The component is housed in a 6 mm × 6 mm, 40-lead LFCSP package and operates within a junction temperature range of -40°C to +125°C.

Feature Summary

• 16 independent channels with full 16-bit resolution across all five selectable output ranges (up to ±15 V).
• Integrated precision 4.096 V reference with ±5 ppm/°C temperature coefficient for high accuracy.
• Built-in analog multiplexer for monitoring output voltages, load currents, and junction temperature.
• Asynchronous toggle and sinusoidal dither capabilities using three multifunctional TGP pins.

Applications

• Optical networking systems
• Instrumentation and data acquisition
• Automatic test equipment
• Process control and industrial automation

Procurement Notes

Verify the specific ordering suffix #TRPBF indicates tape-and-reel packaging when sourcing this component. Confirm that the H suffix corresponds to the extended industrial temperature range (-40°C to +125°C) required for the application environment. Ensure compatibility with the 6 mm × 6 mm LFCSP footprint during PCB layout planning.

Selection Notes

Select this model for applications requiring multiple high-voltage outputs with independent span programming. The internal reference simplifies design by eliminating external components for standard ranges. Consider the ±20 mA drive capability for direct interfacing with low-impedance loads without additional amplification stages.

Part Context

This part belongs to the LTC2688 family of SoftSpan DACs, which are designed for multi-channel signal generation. The H variant specifically denotes the extended temperature grade suitable for harsh environments. The CB package identifies the 40-lead LFCSP form factor, distinguishing it from the WLCSP option.

Replacement Considerations

Direct replacements within the same package and pinout include other LTC2688 variants such as the LTC2688HUJ-16#PBF or LTC2688IUJ-16#PBF, provided the temperature grade and packaging format match the system requirements.