LTC2655BIGN-L16#PBF

Overview

The LTC2655BIGN-L16#PBF is a quad-channel, 16-bit voltage output digital-to-analog converter (DAC) from Analog Devices. It features an integrated reference with a maximum temperature coefficient of 10ppm/°C and rail-to-rail output buffers guaranteed monotonic over temperature. The device operates on a single supply ranging from 4.5V to 5.5V for the -H option or 2.7V to 5.5V for the -L option, providing a full-scale output of 4.096V with the internal reference. It utilizes a 2-wire I²C compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. Key electrical parameters include a settling time of 9.1µs, integral nonlinearity (INL) of ±4 LSB, and differential nonlinearity (DNL) of ±0.3 LSB.

Feature Summary

• Quad-channel 16-bit resolution with integrated 10ppm/°C max reference
• Rail-to-rail output buffers with ultralow crosstalk (<1nV·s)
• I²C compatible interface with asynchronous DAC update pin (LDAC)
• Power-on reset configurable to zero-scale or mid-scale via PORSEL pin

Applications

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

Procurement Notes

Verify the package type is 16-lead Narrow SSOP (GN) and the temperature grade is Industrial (-40°C to +85°C). Confirm the suffix L16 indicates the 2.5V full-scale output configuration with internal reference. Ensure the #PBF designation confirms lead-free compliance. Cross-reference the manufacturer part number with official Analog Devices documentation to validate availability and revision status.

Selection Notes

Select this component when four independent 16-bit voltage outputs are required in a compact SSOP package. The -B grade ensures a maximum INL error of ±4 LSB at 16 bits. Choose the -L option if the system requires operation down to 2.7V supply voltage; choose the -H option if the application demands a 4.096V full-scale output range requiring a minimum 4.5V supply. Verify I²C address configuration requirements using CA0-CA2 pins.

Part Context

This part belongs to the LTC2655 family of quad I²C DACs. The 'B' indicates the accuracy grade (±4 LSB INL), 'IGN' specifies the 16-lead Narrow SSOP package with Industrial temperature range, 'L16' denotes the 16-bit resolution with 2.5V full-scale internal reference, and '#PBF' signifies lead-free packaging. It is distinct from the QFN UF package variants and the H-option parts which offer 4.096V full-scale output.

Replacement Considerations

Direct replacements within the same package and pinout include other LTC2655 variants such as LTC2655BCGN-L16#PBF (Commercial temp) or LTC2655BIUF-L16#PBF (QFN package). For higher accuracy, consider the LTC2654 series, though it uses a different SPI/Microwire interface. Ensure any substitute matches the specific -L or -H full-scale voltage requirement and operating temperature range.