Analog Devices Inc. AD9223AR

Overview

AD9223AR from Analog Devices is a monolithic 12-bit analog-to-digital converter with 3.0 MSPS sampling rate, 70 dB SINAD, ±0.5 LSB integral nonlinearity, and on-chip sample-and-hold amplifier and voltage reference - used in high-fidelity data acquisition and communications receiver front-ends.

For engineers reviewing the AD9223AR datasheet, AD9223AR pinout, AD9223AR application, or AD9223AR equivalent, key selection considerations include its 3 MSPS throughput, 100 mW power consumption at 5 V, differential/single-ended input flexibility, and compatibility with 3.3 V or 5 V digital logic interfaces.

Technical Context

The AD9223AR employs a four-stage differential pipelined architecture with digital error correction logic to guarantee no missing codes and 12-bit accuracy across temperature. Its sample-and-hold amplifier supports both ac- and dc-coupled inputs with programmable common-mode level via CML pin.

Internal voltage reference operates in 1 V or 2.5 V modes (±35 mV tolerance at 2.5 V), and analog input span scales accordingly to 2 V_p-p or 5 V_p-p. Clock input controls all conversion cycles, with pipeline latency fixed at 3 clock cycles and aperture jitter specified at 4 ps rms.

Key Specifications

Pinout & Package

AD9223AR is housed in a 28-lead SOIC package (R-28 option) with standard JEDEC MS-013AC footprint, thermal resistance θ_JA = 71.4°C/W, and lead-free finish compliant with RoHS.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD9221AR and AD9220AR, the AD9223AR provides optimal balance of speed (3 MSPS), power (100 mW), and AC performance (70 dB SINAD), making it the preferred choice for mid-speed communications and industrial DAQ where thermal and timing constraints exclude both slower and faster family members.

Availability

AD9223AR is available at Aetrix Electronics and suitable for medical ultrasound beamforming, industrial data acquisition, and communications receiver front-ends requiring stable component supply and long-term production continuity.

Supply support for AD9223AR 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 for cost-sensitive, space-constrained applications demanding true 12-bit DC accuracy and >11-bit AC performance - targeting instrumentation, imaging, and communications infrastructure.

FAQ

What is the maximum sampling rate supported by the AD9223AR?

The AD9223AR supports a maximum conversion rate of 3.0 MSPS, as confirmed in the Absolute Maximum Ratings and AC Specifications tables of the official datasheet. This rate is guaranteed across the full industrial temperature range (–40°C to +85°C) with AVDD = 5 V, DVDD = 5 V, and VREF = 2.5 V. The AD9223AR achieves this while maintaining 70 dB SINAD and 87.5 dB SFDR at low input frequencies.

Does the AD9223AR require an external voltage reference?

No, the AD9223AR includes a fully integrated, programmable voltage reference that can be configured for either 1 V or 2.5 V output. When using the internal reference, REFCOM must be connected to AVSS, and VREF serves as the reference I/O node. An external reference may be applied if tighter initial accuracy or lower temperature drift is required - but the AD9223AR operates fully functional without one.

What package type is used for the AD9223AR?

The AD9223AR is supplied in a 28-lead Small Outline Integrated Circuit (SOIC) package, designated R-28 in Analog Devices' ordering guide. It features a standard JEDEC MS-013AC outline, 300 mil body width, and RoHS-compliant lead-free finish. Thermal characteristics include θ_JA = 71.4°C/W and θ_JC = 23°C/W.

Can the AD9223AR accept single-ended analog inputs?

Yes, the AD9223AR supports both differential and single-ended analog input configurations. For single-ended use, VINB is typically biased to a fixed common-mode voltage (e.g., 2.5 V via CML pin), while VINA carries the signal. The input structure maintains full 12-bit performance in either mode, though differential operation delivers superior SFDR and common-mode noise rejection.

What is the purpose of the OTR pin on the AD9223AR?

The OTR (Out-of-Range) pin on the AD9223AR is an active-high digital flag indicating analog input overflow - i.e., when the input exceeds the valid range defined by VREF. Used in conjunction with the MSB (BIT 1), OTR distinguishes between high-side saturation (OTR high, MSB high) and low-side saturation (OTR high, MSB low), enabling robust signal-clipping detection in real-time processing pipelines.