LTC2704IGW-12#PBF

Overview

The LTC2704IGW-12#PBF is a quad 12-bit voltage output SoftSpan DAC from Analog Devices, housed in a 44-lead SSOP package. It operates with analog supplies of ±4.5V to ±16.5V and digital logic of 2.7V to 5.5V. Key electrical specifications include integral nonlinearity (INL) and differential nonlinearity (DNL) both within ±1 LSB over the industrial temperature range (-40°C to +85°C). The device features a settling time of 3µs for a 5V step and supports serial readback of all on-chip registers via a 3-wire SPI interface.

Feature Summary

• SoftSpan technology enables six programmable output ranges: two unipolar (0V to 5V, 0V to 10V) and four bipolar (±2.5V, ±5V, ±10V, –2.5V to 7.5V).
• Serial readback capability allows verification of any on-chip register within a single instruction cycle using rolling readback.
• Force/Sense outputs facilitate remote sensing to compensate for trace resistance drops.
• Low glitch impulse of less than 2nV-sec ensures minimal transient errors during code transitions.

Applications

• Process control and industrial automation systems
• Direct digital waveform generation
• Software controlled gain adjustment circuits
• Automated test equipment

Procurement Notes

Verify the specific suffix #PBF indicates lead-free finish and RoHS compliance as per manufacturer standards. Confirm the IGW designation corresponds to the industrial temperature grade (-40°C to +85°C) and the 44-lead SSOP package type. Ensure supply voltages remain within the specified absolute maximum ratings to prevent device damage.

Selection Notes

Select this component when four independent 12-bit channels are required with high linearity accuracy (±1 LSB INL/DNL). The SoftSpan feature is critical if system design demands flexible voltage ranges without external resistor networks. Verify that the 3µs settling time meets the speed requirements of the target application compared to higher-speed alternatives.

Part Context

This part belongs to the LTC2704 family, which includes pin-compatible 14-bit (LTC2704-14) and 16-bit (LTC2704-16) variants. All versions share the same package footprint and software interface, allowing for resolution upgrades or downgrades during product evolution without PCB redesign.

Replacement Considerations

Pin-compatible replacements within the same family include LTC2704IGW-14#PBF and LTC2704IGW-16#PBF. These offer higher resolution while maintaining identical physical dimensions and command sets.