LTC2704CGW-12#PBF

Overview

The LTC2704CGW-12#PBF is a quad, 12-bit voltage output SoftSpan DAC in a 44-lead SSOP package. It operates with logic supplies from 2.7V to 5.5V and analog supplies of ±5V to ±15V. Key electrical parameters include ±1 LSB INL and DNL over the industrial temperature range (0°C to 70°C). The device features six programmable output spans: two unipolar (0V to 5V, 0V to 10V) and four bipolar (±2.5V, ±5V, ±10V, –2.5V to 7.5V). Outputs drive ±5mA with a glitch impulse of less than 2nV-sec. Serial readback allows verification of all on-chip registers.

Feature Summary

• Quad 12-bit resolution with ±1 LSB INL/DNL accuracy
• Six software-programmable SoftSpan output ranges
• Serial readback of all internal registers via SPI interface
• Force/Sense outputs for remote sensing capability

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 tube packaging. Confirm the 'C' grade corresponds to the 0°C to 70°C operating temperature range. Ensure the 44-lead SSOP package dimensions match the PCB footprint requirements. Check for RoHS compliance documentation if required by local regulations.

Selection Notes

Select this part when four independent 12-bit channels are required with flexible bipolar/unipolar output scaling. Compare against LTC2704-14 or -16 variants if higher resolution is needed, noting they are pin-compatible. Consider the ±5mA output drive current limit for load requirements. Verify that the serial interface timing meets the microcontroller's SCK frequency specifications.

Part Context

This component belongs to the LTC2704 family of SoftSpan DACs. The '-12' designation specifies 12-bit resolution, distinguishing it from the 14-bit and 16-bit versions which share the same pinout and functionality but offer different accuracy grades. The 'CGW' indicates the commercial temperature grade and SSOP package.

Replacement Considerations

LTC2704IGW-12#PBF offers the same electrical performance but with an extended industrial temperature range of –40°C to 85°C. LTC2704CGW-14#PBF and LTC2704CGW-16#PBF provide higher resolution (14-bit and 16-bit respectively) while maintaining pin compatibility.