LTC2619IGN-1#PBF

Overview

The LTC2619IGN-1#PBF is a quad 14-bit rail-to-rail voltage output digital-to-analog converter (DAC) in a 16-lead SSOP package. It operates on a single supply of 2.7V to 5.5V and features built-in high-performance output buffers guaranteed monotonic over temperature. The device utilizes a 2-wire I²C compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. The '-1' suffix designates a power-on reset circuit that sets outputs to mid-scale upon initialization, remaining there until a valid write and update occur.

Feature Summary

• Quad 14-bit resolution with rail-to-rail voltage outputs
• Power-on reset to mid-scale for the -1 variant
• I²C interface with 27 selectable addresses via CA0/CA1/CA2 pins
• Individual channel power-down capability reducing current to 1µA max

Applications

• Mobile communications systems
• Process control and industrial automation
• Automatic test equipment and instrumentation

Procurement Notes

Verify the specific ordering suffix '#PBF' indicates lead-free finish and RoHS compliance as per Analog Devices standards. Confirm the 'IGN' designation corresponds to the industrial temperature range (-40°C to +85°C). Ensure the '-1' suffix is required for the mid-scale power-on reset behavior, distinct from the zero-scale reset of the non-suffixed part.

Selection Notes

Select this component when four independent 14-bit DAC channels are needed in a compact 16-lead SSOP footprint. The mid-scale power-on reset feature is critical if downstream circuits must remain inactive or at a known midpoint during system startup. Verify that the I²C bus speed requirements align with the 400kHz fast mode specification.

Part Context

This part belongs to the LTC2609/LTC2619/LTC2629 family of pin-compatible quad DACs. The LTC2619 specifically offers 14-bit resolution, positioned between the 16-bit LTC2609 and the 12-bit LTC2629. All variants share the same 16-lead SSOP package and I²C interface architecture.

Replacement Considerations

LTC2619CGN-1#PBF: Same electrical performance but commercial temperature range (0°C to 70°C). LTC2619IGN#PBF: Identical specifications except power-on reset defaults to zero-scale instead of mid-scale.