LTC2704IGW-16#PBF

Overview

The LTC2704IGW-16#PBF is a quad, serial input, 16-bit voltage output SoftSpan DAC from Analog Devices Inc. It operates with logic supplies of 3V to 5V and analog supplies ranging from ±5V to ±15V. 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). Key electrical specifications include an Integral Nonlinearity (INL) of ±2 LSB and Differential Nonlinearity (DNL) of ±1 LSB over the industrial temperature range. It supports serial readback of all on-chip registers via a 3-wire SPI interface and includes force/sense outputs for remote sensing capabilities.

Feature Summary

• Quad 16-bit resolution with ±2 LSB INL and ±1 LSB DNL accuracy
• Six software-programmable output ranges including unipolar and bipolar spans
• Serial readback of code and span registers via 3-wire SPI interface
• Force/Sense outputs enable precise remote voltage sensing

Applications

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

Procurement Notes

Verify the specific ordering suffix #PBF indicates lead-free finish and tape/reel packaging availability. Confirm the 'I' suffix corresponds to the –40°C to +85°C industrial operating temperature range. Ensure the 44-lead SSOP package dimensions match the target PCB footprint requirements before finalizing procurement orders.

Selection Notes

Select this part when four independent 16-bit channels are required with high linearity. The SoftSpan feature allows flexible voltage range configuration without external resistor networks. Consider the ±5mA output drive capability and settling times (e.g., 4µs for 0V to 5V step) against system bandwidth needs. Verify that the analog supply rails can support the desired output swing and load current.

Part Context

This component belongs to the LTC2704 family, which also includes 12-bit (LTC2704-12) and 14-bit (LTC2704-14) variants. All versions share pin compatibility and identical package footprints, allowing for design flexibility across different resolution requirements within the same hardware platform.

Replacement Considerations

Pin-compatible alternatives within the same family include the LTC2704IGW-14#PBF and LTC2704IGW-12#PBF. These parts offer lower resolutions but maintain the same interface and physical layout. No other cross-manufacturer substitutes are confirmed in public documentation.