My Inquiry
My Account
Analog Devices Inc. AD9221ARZ-REEL
- Part No.:
- AD9221ARZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
AD9221ARZ-REEL.pdf
- Description:
- IC ADC 12BIT PIPELINED 28SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:770
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AD9221ARZ-REEL from Analog Devices is a monolithic 12-bit, 1.5 MSPS analog-to-digital converter with on-chip sample-and-hold amplifier and programmable voltage reference. It operates from a single 5 V supply, delivers ±0.4 LSB typical INL and 70 dB SINAD at 100 kHz input, and supports differential or single-ended analog inputs up to 5 Vp-p - used in precision data acquisition and imaging front-ends.
For engineers reviewing the AD9221ARZ-REEL datasheet, AD9221ARZ-REEL pinout, AD9221ARZ-REEL application, or AD9221ARZ-REEL equivalent, key selection criteria include its 1.5 MSPS sampling rate, 59 mW power consumption, 28-lead SOIC package, straight binary output format, and out-of-range (OTR) flag for overflow detection.
Technical Context
The AD9221ARZ-REEL implements a four-stage differential pipelined ADC architecture with digital error correction logic, enabling guaranteed no-missing-codes performance across –40°C to +85°C. Its sample-and-hold amplifier supports both ac- and dc-coupled inputs with configurable common-mode level via VINA/VINB and internal reference selection through SENSE pin.
It uses a rising-edge clock-triggered conversion cycle with 3-clock-cycle pipeline latency, straight binary output encoding, and dual-supply operation: AVDD = 5 V for analog circuitry and DVDD = 2.7–5.25 V for digital interface. Input referred noise is 0.09 LSBrms (VREF = 2.5 V), and aperture jitter is 4 psrms.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit guaranteed, no missing codes over full temperature range |
| Max Conversion Rate | 1.5 MSPS - defines maximum sustained sampling frequency for real-time signal capture |
| INL (typ) | ±0.4 LSB - ensures accurate representation of linear analog signals without code gaps |
| SINAD (typ) | 70 dB at 100 kHz - supports >11.3 ENOB for high-fidelity digitization of baseband signals |
| Power Consumption (typ) | 59 mW - enables low-power portable or thermally constrained systems |
| Input Span | Up to 5 Vp-p (with VREF = 2.5 V) - accommodates industrial sensor outputs and medical transducer ranges |
| Reference | Internal 1 V or 2.5 V selectable; external reference also supported - allows trade-off between accuracy and drift tolerance |
Pinout & Package
AD9221ARZ-REEL is housed in a 28-lead SOIC (R-28) package with standard JEDEC outline, 1.27 mm pitch, and exposed pad not present. Thermal resistance θJA = 71.4°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLK | Clock input | Rising-edge triggered master timing source; minimum pulse width 300 ns |
| VINA / VINB | Differential analog inputs | Accepts single-ended or differential signals; core input = VINA – VINB, bounded by ±VREF |
| VREF / SENSE / REFCOM | Reference configuration | SENSE selects internal 1 V/2.5 V mode; VREF is I/O; REFCOM is reference ground |
| BIT 1–BIT 12 | Digital output bus | Straight binary format, MSB on Pin 13, LSB on Pin 2; latched on clock edge |
| OTR | Out-of-range indicator | Active-high flag signaling overflow; used with MSB to distinguish high/low saturation |
| AVDD / AVSS / DVDD / DVSS | Power supplies | Separate analog (5 V) and digital (2.7–5.25 V) rails reduce noise coupling |
Key Features
| Feature | Design Value |
|---|---|
| On-chip sample-and-hold amplifier | Enables direct connection to multiplexed sensors or RF IF stages without external buffering |
| Flexible reference architecture | Internal 1 V or 2.5 V reference selectable via SENSE pin; external reference option improves DC accuracy |
| Dual-supply operation | Independent AVDD (5 V) and DVDD (2.7–5.25 V) allow interfacing with 3.3 V logic while maintaining analog integrity |
| Differential input structure | Supports true differential, pseudo-differential, or single-ended configurations - simplifies PCB layout for mixed-signal systems |
| Out-of-range (OTR) flag | Provides real-time saturation detection without requiring post-processing analysis of output codes |
Applications
| Medical Ultrasound Front-End | Industrial Process Monitoring |
|---|---|
Use Scenario: Digitizing echo return signals from piezoelectric transducers after low-noise amplification and filtering. IC Role / Device Role / Timing Role: High-fidelity 12-bit ADC capturing baseband ultrasound waveforms at ≤1.5 MSPS with minimal added noise. Use Value: 0.09 LSBrms input-referred noise preserves weak echo amplitude resolution critical for image contrast. | Use Scenario: Sampling outputs from strain gauges, RTDs, and 4–20 mA loop receivers in PLC analog input modules. IC Role / Device Role / Timing Role: Precision DC-coupled ADC with ±0.4 LSB INL ensuring accurate calibration traceability across temperature. Use Value: Internal 2.5 V reference with ±35 mV tolerance and <0.4 ppm/°C gain drift supports long-term measurement stability. |
| Communications Direct-IF Receiver | Test & Measurement Equipment |
Use Scenario: Down-converting and digitizing intermediate frequency (IF) signals in software-defined radio receivers. IC Role / Device Role / Timing Role: Differential-input ADC operating beyond Nyquist (up to 25 MHz full-power bandwidth) with excellent SFDR. Use Value: 86 dB spurious-free dynamic range at 100 kHz enables clean capture of adjacent-channel interferers in narrowband IF bands. | Use Scenario: Embedded digitizer in portable oscilloscopes and signal analyzers requiring compact, low-power ADC subsystems. IC Role / Device Role / Timing Role: Standalone 12-bit sampling core with straight binary output and OTR flag for real-time trigger generation. Use Value: 3-clock-cycle latency and 1.5 MSPS throughput support waveform reconstruction at ≥5× oversampling for alias-free display. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit, medium-speed ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9223ARZ-REEL | 3.0 MSPS max rate, 100 mW power, identical pinout and interface | Better suited for higher-bandwidth IF sampling or faster multiplexed channel scanning | Select when system requires ≥2× sampling headroom without changing layout or firmware interface |
| ADS8325IPW | 16-bit, 100 kSPS SAR architecture; SPI interface; no internal reference or OTR | Targeted at high-precision DC/low-frequency measurements rather than dynamic signal capture | Choose for applications prioritizing resolution and integral linearity over speed and real-time overflow detection |
Compared with AD9223ARZ-REEL, AD9221ARZ-REEL trades 2× lower sampling rate and 41% less power for equal DC accuracy and same footprint; versus ADS8325IPW, it offers 15× higher throughput and integrated timing features at the cost of 4-bit resolution reduction.
Availability
AD9221ARZ-REEL is available at Aetrix Electronics and suitable for medical imaging systems, industrial process controllers, communications IF receivers, and portable test equipment requiring stable component supply and long-lifecycle support.
Supply support for AD9221ARZ-REEL 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 AD9221ARZ-REEL belongs to the AD922x family of monolithic 12-bit pipelined ADCs designed for precision, low-power, single-supply data acquisition in imaging, instrumentation, and communications systems.
FAQ
What is the maximum sampling rate supported by the AD9221ARZ-REEL?
The AD9221ARZ-REEL supports a maximum conversion rate of 1.5 MSPS, as specified in its datasheet under all operating conditions from –40°C to +85°C. This rate is fixed per device variant and cannot be increased via configuration. The clock period must be ≥667 ns, with minimum high/low pulse widths of 300 ns each. Exceeding this rate degrades AC performance metrics including SINAD and SFDR.
Does the AD9221ARZ-REEL require an external reference voltage?
No, the AD9221ARZ-REEL includes an internal voltage reference selectable between 1 V and 2.5 V via the SENSE pin. However, an external reference may be connected to the VREF pin for improved DC accuracy or temperature stability. When using the internal reference, VREF functions as an output; when using an external reference, it becomes an input with 5 kΩ typical input resistance.
How is the out-of-range (OTR) signal used in the AD9221ARZ-REEL?
The OTR signal on Pin 14 is an active-high indicator that asserts when the analog input exceeds the valid range defined by ±VREF. It is synchronized to the clock and appears alongside the digital output. Combined with the MSB (BIT 1), OTR distinguishes between high overflow (MSB = 1, OTR = 1) and low overflow (MSB = 0, OTR = 1), enabling real-time saturation detection without post-processing.
What are the power supply requirements for the AD9221ARZ-REEL?
The AD9221ARZ-REEL requires two independent supplies: AVDD = 5 V ±5% for analog circuitry (pins 15, 26), and DVDD = 2.7 V to 5.25 V for digital output drivers (pin 28). AVSS (pins 16, 25) and DVSS (pin 27) must be connected to separate ground planes. Supply rejection is ±0.06% FSR over the specified AVDD/DVDD ranges.
Can the AD9221ARZ-REEL interface directly with 3.3 V logic systems?
Yes, the AD9221ARZ-REEL supports 3.3 V digital interfacing when DVDD is set to 3.3 V. Its digital outputs meet VOH ≥2.80 V (IOH = 0.5 mA) and VOL ≤0.4 V (IOL = 1.6 mA) under those conditions, ensuring compatibility with standard 3.3 V CMOS inputs. The straight binary output format eliminates need for level-shifting logic in most host controller interfaces.
AD9221ARZ-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 28-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 1.5M
- Number of Inputs:
- 1
- Input Type:
- Differential, Single Ended
- Data Interface:
- Parallel
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- Pipelined
- Reference Type:
- Internal
- Voltage - Supply, Analog:
- 5V
- Voltage - Supply, Digital:
- 2.7V ~ 5.25V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 28-SOIC
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD9221ARZ-REEL FAQ
1.How can I place an order for AD9221ARZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD9221ARZ-REEL on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for AD9221ARZ-REEL reliable?
The price and inventory of AD9221ARZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD9221ARZ-REEL is usually 5 days.
3.What payment methods are accepted for AD9221ARZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD9221ARZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD9221ARZ-REEL?
AD9221ARZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD9221ARZ-REEL order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for AD9221ARZ-REEL?
For technical support, including AD9221ARZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD9221ARZ-REEL requirements.
6.How does Aetrix verify that AD9221ARZ-REEL is sourced from the original manufacturer or authorized distributors?
All AD9221ARZ-REEL products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AD9221ARZ-REEL meets industry standards.
7.What is the process for return or replacement of AD9221ARZ-REEL?
All AD9221ARZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with AD9221ARZ-REEL, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The AD9221ARZ-REEL part is unused and in its original packaging.
Return procedure for AD9221ARZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AD9221ARZ-REEL Tags
-
ADC081C021CIMKX/NOPB
Texas Instruments
-
MCP3021A5T-E/OT
Microchip Technology
-
TLA2024IRUGR
Texas Instruments
-
MCP3221A5T-E/OT
Microchip Technology
-
MCP3221A5T-I/OT
Microchip Technology
-
MCP3221A4T-E/OT
Microchip Technology
-
MCP3221A6T-E/OT
Microchip Technology
-
MCP3221A0T-E/OT
Microchip Technology
-
MCP3221A1T-E/OT
Microchip Technology
-
ADC121S021CIMFX/NOPB
Texas Instruments
-
MCP3001-I/MS
Microchip Technology
-
MCP3001-I/SN
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
