Analog Devices Inc. AD9223ARSZ

Overview

AD9223ARSZ from Analog Devices is a monolithic 12-bit analog-to-digital converter with 3.0 MSPS sampling rate, 70 dB SINAD, ±0.5 LSB INL (max), and single 5 V analog supply operation. It integrates a sample-and-hold amplifier and programmable voltage reference, and is used in high-fidelity data acquisition systems requiring precise dc linearity and low-noise ac performance.

For engineers reviewing the AD9223ARSZ datasheet, AD9223ARSZ pinout, AD9223ARSZ application, or AD9223ARSZ equivalent, key selection criteria include its 3 MSPS throughput, 0.09 LSB input-referred noise at 2.5 V reference, guaranteed no missing codes, differential/single-ended input flexibility, and compatibility with 3.3 V or 5 V digital logic interfaces.

Technical Context

The AD9223ARSZ employs a four-stage differential pipelined architecture with digital error correction logic to ensure 12-bit accuracy and no missing codes across temperature. Its sample-and-hold amplifier supports both single-ended and differential inputs with configurable common-mode level (e.g., 2.5 V or 1 V) and input spans of 2 V or 5 V p-p.

Internal timing uses the rising edge of a single clock for sampling; pipeline latency is fixed at three clock cycles. The device accepts external references and features an out-of-range (OTR) flag synchronized with MSB to indicate overflow conditions during conversion.

Key Specifications

Pinout & Package

AD9223ARSZ is housed in a 28-lead SSOP (Shrink Small Outline Package) with 0.65 mm lead pitch and exposed pad thermal design. Package dimensions comply with JEDEC MO-153AC standard.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD9221ARSZ and AD9220ARSZ, the AD9223ARSZ delivers optimal balance of speed (3 MSPS), power (100 mW), and dynamic performance (70 dB SINAD), making it ideal for mid-speed instrumentation where neither ultra-low power nor ultra-high bandwidth is mandated.

Availability

AD9223ARSZ is available at Aetrix Electronics and suitable for medical imaging, industrial DAQ, communications IF sampling, and test equipment requiring stable component supply and long-term production continuity.

Supply support for AD9223ARSZ 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 precision data acquisition systems demanding true 12-bit dc accuracy, low-noise ac performance, and flexible analog input interfacing in single-supply environments.

FAQ

What is the maximum sampling rate supported by the AD9223ARSZ?

The AD9223ARSZ supports a maximum conversion rate of 3.0 MSPS, as specified in its AC and switching characteristics tables. This rate is guaranteed over the full industrial temperature range (–40°C to +85°C) with AVDD = 5 V, DVDD = 5 V, and proper decoupling. At this rate, the minimum clock period is 333 ns, and the device achieves 70 dB SINAD with a 1 MHz input tone.

Does the AD9223ARSZ require an external voltage reference?

No, the AD9223ARSZ does not require an external voltage reference. It includes a fully integrated, programmable internal reference that can be configured for either 1.0 V or 2.5 V output. When using the internal reference, VREF is driven from the chip and REFCOM serves as its return path. An external reference may be applied if tighter initial accuracy or lower temperature drift is required.

How is the OTR (Out-of-Range) signal used in the AD9223ARSZ?

The OTR signal in the AD9223ARSZ is a synchronous, active-high flag indicating analog input overflow. It is asserted one clock cycle after an input exceeds the valid range defined by ±VREF. Used together with the MSB (BIT 1), OTR distinguishes between high overflow (+VREF + 0.5 LSB) and low overflow (–VREF – 0.5 LSB), enabling robust saturation detection in real-time control loops and signal processing pipelines.

What are the power supply requirements for the AD9223ARSZ?

The AD9223ARSZ requires two independent supplies: AVDD = 5 V ±5% for the analog section, and DVDD = 2.7 V to 5.25 V for the digital interface. AVSS and DVSS must be connected at a single point near the device. Typical supply currents are 20 mA (IAVDD) and <1.0 mA (IDVDD) at 3 MSPS, resulting in ~100 mW total power consumption under nominal conditions.

Can the AD9223ARSZ accept single-ended analog inputs?

Yes, the AD9223ARSZ supports single-ended analog inputs via the VINA pin while holding VINB at a fixed common-mode voltage (e.g., 2.5 V). The internal differential input stage allows this configuration without hardware modification. For optimal performance, the common-mode voltage should be centered at AVDD/2 (2.5 V), and the input span should be set to 2 V or 5 V p-p depending on required SNR versus THD trade-off.