Analog Devices Inc. AD9223ARS

Overview

AD9223ARS from Analog Devices is a monolithic 12-bit analog-to-digital converter with 3.0 MSPS sampling rate, single 5 V analog supply and 2.7–5.25 V digital supply, ±0.5 LSB integral nonlinearity, and on-chip sample-and-hold amplifier and voltage reference. It delivers 70 dB SINAD and 87.5 dB SFDR at 500 kHz input, supporting high-fidelity data acquisition in instrumentation and communications systems.

For engineers reviewing the AD9223ARS datasheet, AD9223ARS pinout, AD9223ARS application, or AD9223ARS equivalent, this page provides verified technical context, real-world design meaning for key specs, validated pin functions, confirmed application use cases, and two rigorously cross-checked alternative parts - all grounded in the official Rev. E datasheet and Analog Devices' product documentation.

Technical Context

The AD9223ARS uses a four-stage differential pipelined architecture with digital error correction logic to guarantee no missing codes over temperature and achieve true 12-bit linearity. Its sample-and-hold amplifier supports both single-ended and differential inputs with programmable common-mode level via SENSE and CML pins.

Internal timing relies on a single clock input (rising-edge sampling), with 3-clock-cycle pipeline latency and straight-binary output format. The device operates with either internal 1 V or 2.5 V reference (±14 mV / ±35 mV tolerance) or external reference, and features an out-of-range (OTR) flag synchronized to data output.

Key Specifications

Pinout & Package

AD9223ARS is housed in a 28-lead SSOP (RS-28) package with 0.65 mm lead pitch, JEDEC MO-153 compliant, thermal resistance θ_JA = 63.3°C/W.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 12-bit, medium-speed ADC applications.

Compared with AD9221ARS and AD9220ARS, the AD9223ARS uniquely balances 3.0 MSPS throughput, 100 mW power, and 70 dB SINAD - making it the optimal selection for cost- and power-constrained systems requiring reliable medium-speed digitization without sacrificing AC performance.

Availability

AD9223ARS is available at Aetrix Electronics and suitable for medical ultrasound beamforming, industrial process monitoring, and communications direct-IF receiver designs requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for AD9223ARS 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.

The AD922x family was designed to deliver monolithic, single-supply 12-bit ADC functionality with integrated reference and SHA - targeting instrumentation, medical imaging, and communications systems where board space, power, and interface simplicity are critical.

FAQ

What is the maximum sampling rate supported by the AD9223ARS?

The AD9223ARS supports a maximum conversion rate of 3.0 MSPS, as specified in the Rev. E datasheet under "MAX CONVERSION RATE" for the AD9223 variant. This rate is guaranteed across the full operating temperature range (–40°C to +85°C) with AVDD = 5 V, DVDD = 5 V, and VREF = 2.5 V. Clock period must be ≥333 ns, with minimum high/low pulse widths of 150 ns each.

Does the AD9223ARS include an internal voltage reference?

Yes, the AD9223ARS integrates a programmable internal voltage reference that can be configured for either 1.0 V or 2.5 V output via the SENSE pin. The 2.5 V mode offers ±35 mV tolerance and is commonly used for full-scale 5 V_p-p input spans. The reference can be disabled to allow use of an external precision reference.

What package type is used for the AD9223ARS?

The AD9223ARS is packaged in a 28-lead SSOP (Shrink Small Outline Package) with RS-28 package option, per the official Ordering Guide. It features a 0.65 mm lead pitch and is JEDEC MO-153 compliant, offering improved thermal performance (θ_JA = 63.3°C/W) compared to the SOIC variant.

How does the AD9223ARS handle analog input configurations?

The AD9223ARS supports both differential and single-ended analog inputs using its VINA/VINB pins. In differential mode, VCORE = VINA – VINB defines the core input, bounded by ±VREF. Single-ended operation is achieved by fixing VINB to a stable common-mode voltage (e.g., 2.5 V via CML), while driving VINA with the signal.

What is the purpose of the OTR (Out-of-Range) pin on the AD9223ARS?

The OTR pin on the AD9223ARS is an active-high indicator that signals when the analog input exceeds the valid range (i.e., VCORE > +VREF or VCORE < –VREF). It is synchronized to the data output and used alongside the MSB to determine whether overflow is positive or negative - enabling robust clipping detection in real-time signal processing chains.