LTC2704IGW-14#TRPBF

Overview

The LTC2704IGW-14#TRPBF is a quad 14-bit voltage output DAC featuring SoftSpan technology for programmable output ranges. It operates with logic supplies from 3V to 5V and analog supplies of ±5V to ±15V. Key electrical parameters include 1 LSB INL and DNL over the industrial temperature range, a glitch impulse of less than 2nV-sec, and outputs capable of driving ±5mA. The device supports serial readback of all on-chip registers via a 3-wire SPI interface and includes power-on and clear-to-zero functionality.

Feature Summary

• SoftSpan Technology: Six programmable output ranges including unipolar (0V to 5V, 0V to 10V) and bipolar (±2.5V, ±5V, ±10V, –2.5V to 7.5V).
• High Accuracy: 1 LSB Integral Nonlinearity (INL) and Differential Nonlinearity (DNL) guaranteed over the industrial temperature range.
• Serial Readback: Allows verification of any on-chip register in one instruction cycle using the SRO pin.
• Force/Sense Outputs: Enable remote sensing for improved load regulation.

Applications

• Process Control and Industrial Automation
• Direct Digital Waveform Generation
• Software Controlled Gain Adjustment
• Automated Test Equipment

Procurement Notes

Verify the #TRPBF suffix indicates tape and reel packaging when sourcing this component. Confirm the IGW suffix corresponds to the industrial temperature grade (-40°C to +85°C) and the 44-lead SSOP package. Ensure compatibility with the required analog supply voltages and reference configurations before procurement.

Selection Notes

Select the LTC2704IGW-14#TRPBF for applications requiring 14-bit resolution with high linearity (1 LSB INL/DNL). Choose this part if software-programmable output spans are needed to accommodate varying signal levels without hardware changes. Ensure the system can provide dual analog supplies within the ±5V to ±15V range and a separate logic supply between 2.7V and 5.5V.

Part Context

This component belongs to the LTC2704 family, which includes 12-bit, 14-bit, and 16-bit variants. These parts share pin compatibility and functional features, differing primarily in resolution and specific nonlinearity specifications. The -14 variant offers a balance between resolution and performance for precision industrial applications.

Replacement Considerations

Pin-compatible replacements within the same family include the LTC2704IGW-12#TRPBF (12-bit) and LTC2704IGW-16#TRPBF (16-bit). Verify that the alternative resolution meets the application's accuracy requirements and that the INL/DNL specifications remain within acceptable limits.