Analog Devices Inc. AD1865P

Mfr. Part

AD1865P

Manufacturer

ADI (Analog Devices, Inc.). Y-IC is a quality distributor of ADI and we will provide you with the best products and services, fast delivery, and reliable support.

Detailed Description

AD1865P is a dual-channel, 18-bit audio DAC in a 28-PLCC package. It uses a precision R-2R ladder architecture for true 18-bit resolution and low distortion. It provides current outputs (one per channel) and accepts a serial audio data stream. It is well known in high-fidelity audio for its natural sound, low glitch energy, and suitability for non-oversampling (NOS) designs. Mounting is surface-mount; package is J-leaded PLCC (11.51 mm x 11.51 mm). Base device family: AD1865.

Key Features

18-bit resolution, dual (stereo) channels

R-2R ladder architecture for linear, low-latency conversion

Current-output DACs for each channel (requires external I/V conversion)

Serial audio input, MSB-first, left-justified style (non-I2S by default; simple interface logic can adapt)

Separate analog and digital supply/ground pins for lower noise coupling

Low glitch energy and low zero-crossing distortion

No on-chip digital filter (ideal for NOS designs; external filtering is user-selectable)

Surface-mount 28-PLCC (J-lead) form factor for robust assembly

Supplier device package: 28-PLCC (11.51 x 11.51 mm)

Package format: Tube

Key Advantages

Audiophile-grade sound with true 18-bit R-2R accuracy

Simple, deterministic latency (no internal DSP or oversampling)

Flexible system design: choose your own digital filter and I/V stage

Proven performance in legacy high-end audio players, DACs, and studio gear

Solid mechanical reliability with J-leaded PLCC in demanding environments

Clear separation of analog and digital domains to reduce interference

Packaging

Type: 28-PLCC (J-Lead), surface-mount

Material: Molded plastic leaded chip carrier

Size: 11.51 mm x 11.51 mm body outline

Pin configuration: 28 J-leads; typical pins include serial data, bit clock, word/latch clock, left/right outputs (current), reference, analog supplies/grounds, digital supply/ground. Refer to datasheet for exact pinout

Mounting: Surface mount, J-leads offer compliance that helps with thermal/mechanical stress

Thermal characteristics: Standard PLCC thermal behavior; actual θJA/θJC depends on PCB copper, airflow, and mounting. Follow the ADI datasheet and your board’s thermal design rules

Electrical properties (summary): 18-bit dual-channel current-output DAC, serial interface, separate analog and digital supplies, audio-grade linearity and low distortion. See datasheet for timing, reference current, output compliance, and supply details

Shipment packaging: Tube

Stock on hand: 2200 units (subject to prior sale)

Lifecycle

Status: Mature/legacy audio DAC. Availability may be limited and lead times can vary. Not recommended for brand-new mass-production platforms without a supply review

Discontinuation: Some AD1865 variants have been discontinued historically; check current status before committing a new design

Direct pin-to-pin equivalents: None widely available today

Functional/modern alternatives (not pin-compatible; different architectures and interfaces):

- ADI: AD1853 (24-bit, sigma-delta, stereo), AD1955 (24-bit, multibit sigma-delta, differential current outputs)

- Texas Instruments (Burr-Brown): PCM1794A, PCM1792A (24-bit, sigma-delta, high performance)

- AKM: AK4493 series, AK4490 series (24/32-bit, sigma-delta)

- Legacy R-2R (discontinued/limited): TI PCM1704, PCM1702, PCM63; ADI AD1862

If you require a drop-in or a carefully vetted alternative, contact our sales team via the Y-IC website for the latest options and cross-references

Key Application Areas

High-end stereo DACs and CD player upgrades

Non-oversampling (NOS) audiophile DAC designs

Studio and broadcast audio equipment

Audio test and measurement where deterministic latency and linearity matter

Retrofit/repair of legacy systems originally built around AD1865

Datasheet

Y-IC hosts the most authoritative, up-to-date datasheet for AD1865P on this product page. We recommend downloading it here to get exact pinouts, timing, electrical limits, and design guidance.

Request for Quotation Now

Limited Time Offer — Get a Quote on our website today for AD1865P in stock. Click Get a Quote to secure pricing and delivery, or Learn More to speak with our specialists. We recommend placing inquiries now to lock in availability on the current lot.