LTC2654BCGN-L16#PBF

Overview

The LTC2654BCGN-L16#PBF is a quad 16-bit rail-to-rail voltage output digital-to-analog converter (DAC) from Analog Devices. It features an integrated precision reference with a maximum temperature coefficient of 10ppm/°C, providing a full-scale output of 2.5V. The device operates on a single supply voltage ranging from 2.7V to 5.5V and communicates via a 4-wire SPI/Microwire compatible serial interface with clock rates up to 50MHz. Key electrical specifications include a maximum integral nonlinearity (INL) error of ±4LSB, a typical settling time of 8.9µs for 16-bit accuracy, and ultralow crosstalk between channels (<3nV•s). The component is housed in a 16-lead narrow SSOP package and is guaranteed monotonic over the operating temperature range.

Feature Summary

• Quad 16-bit resolution with integrated 10ppm/°C max precision reference
• Rail-to-rail output buffers with <3nV•s DAC-to-DAC crosstalk
• SPI/Microwire compatible 4-wire serial interface supporting 50MHz clocks
• Selectable power-on reset to zero-scale or mid-scale via PORSEL pin

Applications

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

Procurement Notes

Verify the specific ordering suffix GN indicates the 16-lead narrow SSOP package and L16 denotes the 16-bit resolution with 2.5V internal reference. Confirm the B grade specifies a maximum INL of ±4LSB. Ensure the C temperature grade matches the application requirement of 0°C to 70°C. Cross-reference the datasheet for lead-free compliance and RoHS status before finalizing procurement.

Selection Notes

Select this part when a quad-channel DAC with high precision and low crosstalk is required in a compact surface-mount package. The -L option is suitable for single-supply operations down to 2.7V, whereas -H options require 4.5V minimum. Consider the external reference mode if a full-scale output greater than 2.5V is needed, as the external reference voltage determines the span. Verify that the 16-bit resolution meets the system's linearity requirements compared to the 12-bit variants.

Part Context

This component belongs to the LTC2654 family of quad DACs, which also includes 12-bit variants and QFN package options. The BC prefix identifies the commercial temperature grade (0°C to 70°C) and the B electrical grade (±4LSB INL). The GNN suffix corresponds to the 16-lead narrow SSOP physical footprint, distinguishing it from the UF QFN package variant. This specific part number represents the highest accuracy configuration within the commercial temperature range for this package type.

Replacement Considerations

Direct replacements within the same package and specification include the LTC2654CGN-L16#PBF, which offers improved linearity (±1LSB INL) but may have different cost implications. For lower resolution needs, the LTC2654CGN-L12#PBF provides 12-bit performance. If a wider temperature range is required, the I-grade equivalents such as LTC2654BIGN-L16#PBF are available.