AD1856R-K-REEL7

Overview

The AD1856R-K-REEL7 is a monolithic, 16-bit pulse code modulation (PCM) audio digital-to-analog converter manufactured by Analog Devices. It integrates a voltage output amplifier, 16-bit DAC, serial-to-parallel input register, and voltage reference within a single chip. The device operates on dual power supplies ranging from ±5 V to ±12 V, with typical power dissipation of 110 mW at ±5 V and 135 mW at ±12 V. It features a serial interface supporting clock rates up to 10 MHz, enabling compatibility with 2×, 4×, and 8× oversampling digital filters. The component guarantees operation over an extended temperature range of −25°C to +70°C.

Feature Summary

• 16-bit resolution with 96 dB dynamic range and total harmonic distortion as low as 0.002%.
• Integrated output amplifier provides ±3 V voltage swing or ±8 mA current drive capability.
• Fast settling time of 1.5 µs supports high-speed oversampling reconstruction.
• Optional MSB adjustment pin allows trimming of differential linearity error for superlinear performance.

Applications

• Compact disc players
• Digital audio amplifiers
• DAT recorders and players
• Synthesizers and keyboards

Procurement Notes

Verify the specific K suffix against the manufacturer's ordering guide to confirm the graded THD performance level associated with this variant. Ensure the reel packaging format matches the REEL7 designation in procurement records. Confirm that the required supply voltages fall within the specified ±4.75 V to ±13.2 V operational range for reliable function.

Selection Notes

Select this component for applications requiring low distortion audio reconstruction without external feedback resistors. The integrated output stage simplifies design compared to current-output DACs. Consider the optional MSB trim circuit if minimizing distortion at low signal amplitudes is critical. Ensure the host system can provide separate analog and digital ground connections to minimize crosstalk.

Part Context

The AD1856 series belongs to Analog Devices' portfolio of PCM audio DACs designed for consumer digital audio equipment. The RZ package denotes a 16-lead plastic SOIC form factor. The K suffix typically indicates a specific performance grade regarding Total Harmonic Distortion testing. This device replaces older discrete solutions by integrating the DAC, reference, and amplifier into a single BiMOS II process chip.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult the manufacturer's comparable parts list for parametric equivalents.