Analog Devices Inc. ADAV803ASTZ

Overview

ADAV803ASTZ from Analog Devices is a stereo audio codec IC designed for DVD-recordable and CD-R/W systems, integrating ADC (102 dB DR @ 48 kHz), DAC (101 dB DR @ 48 kHz), and sample rate converter (140 dB DR) in a single 64-lead LQFP package. It supports asynchronous dual-domain operation with independent 32–192 kHz playback and 48/96 kHz record sampling, and features I²C control, S/PDIF I/O, and PLL-based MCLK generation for DVDR system timing.

For engineers reviewing the ADAV803ASTZ datasheet, ADAV803ASTZ pinout, ADAV803ASTZ application, or ADAV803ASTZ equivalent, this page delivers verified functional architecture, validated pin-level circuit roles, confirmed dynamic range and THD+N performance at multiple sample rates, and real-world use cases in optical disc recording systems requiring simultaneous analog capture, digital format conversion, and high-fidelity playback.

Technical Context

The ADAV803ASTZ implements a second-order multibit Σ-Δ ADC with Sinc⁵ + three half-band FIR decimation (910 μs group delay @ 48 kHz) and a matched 24-bit DAC with interpolation filtering (630 μs group delay @ 48 kHz). Its sample rate converter supports 8–192 kHz bidirectional conversion with 140 dB dynamic range and 120 dB THD+N, enabling seamless interoperation between disparate digital audio domains.

On-chip PLLs generate SYSCLK1–3 (256–768 × fS) and MCLKO (27/54 MHz) from XIN (27 MHz) or MCLKI, while DIR/DIT blocks comply with IEC 60958 for S/PDIF input/output. All analog sections operate from 3.3 V AVDD with ±1.0 Vrms input/output swing, and digital interfaces support 3.0–3.6 V ODVDD with 2.0 V VIH min.

Key Specifications

Pinout & Package

ADAV803ASTZ is housed in a 64-lead LQFP package with exposed thermal pad (not electrically connected), rated for −40°C to +85°C operation. Pin functions are validated per Analog Devices Rev. A datasheet Figure 2 and Table 6.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar stereo audio codec applications.

Compared with AK4583VN and CS4272-CQZ, the ADAV803ASTZ uniquely integrates high-DR ADC/DAC, full-featured SRC, dual S/PDIF I/O, and programmable analog front-end in one LQFP package-making it the only solution qualified for multi-format DVD-recordable systems requiring concurrent analog capture, digital format translation, and high-fidelity playback.

Availability

ADAV803ASTZ is available at Aetrix Electronics and suitable for DVD-recordable systems, CD-R/W recorders, and optical disc authoring equipment requiring stable component supply, long-term lifecycle support, and guaranteed commercial temperature range (−40°C to +85°C) operation.

Supply support for ADAV803ASTZ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA, with design centers worldwide and a 50+ year heritage in precision signal chain solutions.

The ADAV803ASTZ belongs to Analog Devices' audio codec product line, engineered specifically for optical disc recording platforms requiring integrated analog capture, digital playback, and sample-rate interoperability across DVD and CD standards.

FAQ

What sample rates does the ADAV803ASTZ support for ADC and DAC operation?

The ADAV803ASTZ supports 48 kHz and 96 kHz sampling for its stereo analog-to-digital converter (ADC), and 32 kHz, 44.1 kHz, 48 kHz, 96 kHz, and 192 kHz for its stereo digital-to-analog converter (DAC). This range covers all major optical disc formats including DVD-R, DVD-RW, CD-R, and CD-RW. The device's integrated sample rate converter further enables seamless bridging between these domains, allowing the ADAV803ASTZ to process inputs and outputs at mismatched rates without external components.

Does the ADAV803ASTZ include built-in automatic level control (ALC) for analog recording?

Yes, the ADAV803ASTZ includes a fully programmable automatic level control (ALC) block in its ADC channel. It monitors the digital output level and dynamically adjusts the programmable gain amplifier (PGA) in 0.5 dB steps to prevent clipping during analog input capture. The ALC supports configurable attack and recovery modes-including no-recovery mode to avoid audible gain modulation-and operates independently of the DAC or SRC sections, making it ideal for unattended recording in DVD-recordable systems.

How is the ADAV803ASTZ clocked, and what timing sources does it support?

The ADAV803ASTZ supports multiple clocking configurations: it can accept a 27 MHz crystal via XIN/XOUT, an external master clock (MCLKI) from 12.288 MHz to 54 MHz, or derive clocks internally using its dual PLL architecture. From these sources, it generates SYSCLK1–3 (256–768 × fS) and MCLKO (27/54 MHz) with jitter as low as 65 ps rms. This flexibility allows the ADAV803ASTZ to synchronize precisely with DVDR system timing requirements while maintaining low-phase-noise performance essential for high-fidelity audio conversion.

Can the ADAV803ASTZ handle S/PDIF digital audio I/O directly?

Yes, the ADAV803ASTZ integrates both a digital interface receiver (DIR) and digital interface transmitter (DIT) compliant with IEC 60958 (S/PDIF). The DIR accepts digital audio at sample rates from 27.2 kHz to 200 kHz with differential 200 mV input sensitivity, while the DIT outputs compliant S/PDIF signals on DITOUT. These blocks operate independently of the ADC/DAC paths, enabling the ADAV803ASTZ to function as a complete digital audio gateway-routing S/PDIF streams to/from the SRC, DAC, or record channels without host processor involvement.

What is the power supply configuration required for the ADAV803ASTZ?

The ADAV803ASTZ requires three independent supply domains: AVDD = 3.0–3.6 V (typ. 3.3 V) for analog circuitry including ADC, DAC, and reference sections; DVDD = 3.0–3.6 V (typ. 3.3 V) for core digital logic; and ODVDD = 3.0–3.6 V for digital I/O buffers (DIR/DIT, I²C, serial ports). Total typical operating current is 111 mA (60 mA analog + 38 mA digital + 13 mA interface), with power-down modes reducing current to 24.2 mA total-enabling efficient thermal management in compact optical drive enclosures.