Analog Devices Inc. AD1865R

Mfr. Part

AD1865R

Manufacturer

Analog Devices, Inc. (ADI). Y-IC is a quality distributor of ADI. We deliver original products, fast service, and dependable support to help you select and succeed with ADI solutions.

Detailed Description

Stereo audio digital-to-analog converter (DAC), 18-bit resolution, dual channel. Designed for high-fidelity audio conversion. Package is 28-SOIC for surface-mount assemblies. Base product family AD1865. Supplied in tube packaging. Main category Integrated Circuits (ICs). Subcategory Data Acquisition – Digital to Analog Converters (DAC).

Key Features

18-bit resolution for fine audio detail

Dual-channel (stereo) DAC

Audio-optimized linearity and low distortion design

Digital audio input interface (serial format; see datasheet for supported modes)

Separate left/right conversion paths for better channel separation

Stable performance over temperature (see datasheet for limits)

28-SOIC package for easy SMT assembly

Proven ADI audio pedigree for consistent sound quality

Key Advantages

Clean, natural sound from multibit architecture

Reliable long-term performance backed by ADI quality

Simple integration in stereo audio designs

Robust against clock and data jitter when used per datasheet guidelines

Broad ecosystem of audio front-end and output stages to pair with this DAC

Ideal for upgrades and service of legacy hi-fi and pro-audio gear that specify AD1865

Packaging

Type: 28-SOIC (Small Outline IC), wide body

Material: Molded epoxy body with copper leadframe; tin-lead or lead-free plated leads per lot/date code (see datasheet and labeling)

Size: Body width about 7.50 mm (0.295"), typical SOIC pitch 1.27 mm; 28 leads; height low-profile SOIC; standard 28-SOIC footprint dimensions (check datasheet drawing for exact values)

Pin configuration: 28 pins including digital input pins (data, clock, left/right control), left/right output pins, reference pins, power, and ground (see pinout in datasheet)

Thermal characteristics: Low-power device; use good PCB copper for heat spreading; follow datasheet thermal guidance for ambient and junction limits

Electrical properties: 18-bit DAC, dual-channel stereo; digital interface compatible with standard audio serial formats; supply and reference requirements defined in datasheet; optimized for common audio sample rates (e.g., 32–48 kHz and higher depending on system design)

Lifecycle

Status: Mature legacy audio DAC. Availability can vary. Not indicated as nearing discontinuation in the provided data, but customers should verify current status.

Equivalent or alternative models (verify fit, pinout, and specs before substitution):

- From ADI: AD1852 (24-bit stereo audio DAC), AD1955 (high-performance 24-bit DAC), AD1862 (higher-resolution multibit DAC), AD1853/AD1854 (modern audio DACs)

- Cross-brand examples: TI PCM1794A (24-bit DAC), TI PCM1702 (classic multibit DAC), AKM AK4493/AK4490 (modern audio DACs), ESS ES9018/ES9023 (Sabre series)

If exact drop-in or fully equivalent devices are required and none listed meets your needs, please contact our sales team via the Y-IC website for tailored recommendations and the latest lifecycle updates.

Key Application Areas

High-fidelity stereo audio DACs and preamps

CD players and legacy digital audio restorations

Professional audio converters and studio gear

DIY hi-fi and audio upgrades

Embedded audio systems needing robust stereo conversion

Datasheet

Y-IC hosts the most authoritative datasheet for AD1865R on our product page. We recommend downloading it now to get pinouts, electrical limits, timing, and mechanical drawings for accurate design.

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