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Analog Devices Inc. AD9225ARSRL
- Part No.:
- AD9225ARSRL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
AD9225ARSRL.pdf
- Description:
- IC ADC 12BIT PIPELINED 28SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,872
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Product details
Overview
AD9225ARSRL from Analog Devices is a monolithic 12-bit, 25 MSPS analog-to-digital converter with integrated sample-and-hold amplifier and programmable voltage reference. It operates on a single 5 V supply, delivers 71 dB SNR and –85 dB SFDR, and guarantees no missing codes across temperature. It serves as the front-end digitizer in high-speed communications receivers and medical ultrasound beamformers.
For engineers reviewing the AD9225ARSRL datasheet, AD9225ARSRL pinout, AD9225ARSRL application, or AD9225ARSRL equivalent, key selection criteria include its 25 MSPS throughput, differential input flexibility (2 V or 4 V p-p span), straight-binary output format, OTR overflow flag, and compatibility with both 3 V and 5 V logic families.
Technical Context
The AD9225ARSRL employs a four-stage differential pipelined architecture with digital error correction logic to achieve 12-bit accuracy at 25 MSPS. Its sample-and-hold amplifier supports true differential or single-ended inputs, with configurable common-mode level via CML pin and input offset control through VINB.
It integrates an on-chip bandgap reference selectable between 1.0 V and 2.0 V via SENSE pin strapping, and features separate analog (AVDD/AVSS) and digital (DRVDD/DRVSS) supplies to minimize noise coupling. Pipeline latency is fixed at three clock cycles, with aperture jitter specified at 1 ps rms.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - guarantees full 4096-code output range with no missing codes over temperature. |
| Sampling Rate | 25 MSPS - enables real-time digitization of IF signals up to 12.5 MHz Nyquist bandwidth. |
| SNR / SINAD | 71 dB / 70.7 dB at 2.5 MHz - supports >11.3 ENOB for high-fidelity signal capture in imaging systems. |
| SFDR | –85 dB at 2.5 MHz - suppresses spurious tones critical for spectral purity in communications receivers. |
| Input Span | 2 V or 4 V p-p differential - configurable via VREF/Sense; enables direct interface to op-amp drivers without level-shifting. |
| Power Dissipation | 280 mW (internal 2 V ref) - enables dense PCB layouts in portable ultrasound or baseband processing modules. |
| Digital Interface | Straight binary, 12-bit parallel output - simplifies FPGA/ASIC data capture without format conversion logic. |
Pinout & Package
AD9225ARSRL is packaged in a 28-lead SSOP (Shrink Small Outline Package), RoHS-compliant, with 0.635 mm lead pitch and exposed pad for thermal enhancement. Pin numbering follows standard top-view orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLK | Master sampling clock input | Rising-edge triggered; internal timing uses both edges - requires low-jitter source (<1 ps rms) for optimal SNR. |
| VINA / VINB | Differential analog input pair | VINA(+) and VINB(–) define core input as VCORE = VINA – VINB; supports ac/dc-coupled, single-ended, or differential modes. |
| BIT 1–BIT 12 | Parallel digital output bus | BIT 1 = MSB, BIT 12 = LSB; straight binary format; latched on CLK rising edge with 13 ns delay. |
| OTR | Out-of-range indicator | Active-high flag signaling input exceeds ±VREF range; used with MSB to distinguish high/low overflow conditions. |
| SENSE / VREF / REFCOM | Reference configuration interface | SENSE strapping selects 1 V or 2 V internal reference; VREF sets full-scale span (2×VREF); REFCOM = AVSS reference return. |
| AVDD / AVSS / DRVDD / DRVSS | Power supply terminals | Separate analog (5 V) and digital (3–5 V) rails isolate noise; DRVDD supports mixed-voltage system interfacing. |
| CAPB / CAPT / CML | Reference decoupling & bias | CAPB/CAPT require external 0.1 µF + 10 µF decoupling per datasheet Fig. 6; CML sets mid-supply common-mode level (2.5 V). |
Key Features
| Feature | Design Value |
|---|---|
| No missing codes guaranteed | Ensures monotonicity and deterministic code mapping across full temperature range (–40°C to +85°C), critical for closed-loop control feedback. |
| Differential nonlinearity ≤ ±0.4 LSB | Minimizes harmonic distortion in baseband digitization, directly enabling <–72 dB THD performance at 10 MHz input. |
| On-chip sample-and-hold amplifier | Supports multiplexed channel switching and Nyquist-rate sampling without external hold circuitry, reducing BOM and layout complexity. |
| Programmable internal voltage reference | 1 V or 2 V selection via SENSE pin eliminates need for external precision reference in cost-sensitive medical or industrial designs. |
| 3 V / 5 V logic compatibility | DRVDD rail allows direct connection to either 3.3 V FPGA I/O banks or legacy 5 V microcontrollers without level shifters. |
Applications
| Communications Receiver Front-End | Medical Ultrasound Beamformer |
|---|---|
Use Scenario: Digitizing 2–10 MHz intermediate frequency (IF) signals in software-defined radio or cellular base stations. IC Role / Device Role / Timing Role: Primary ADC capturing real-time IF samples; synchronized to system clock with 3-cycle pipeline latency. Use Value: 71 dB SNR and –85 dB SFDR preserve modulation fidelity for QAM-64/256 demodulation; 25 MSPS rate supports 12.5 MHz instantaneous bandwidth. |
Use Scenario: Sampling echo return signals from phased-array transducers in portable ultrasound scanners. IC Role / Device Role / Timing Role: Channel-level digitizer in multi-channel receive beamformer ASICs; driven by low-jitter clock derived from master timing controller. Use Value: Differential input rejects common-mode noise from high-voltage transmit bursts; 12-bit resolution enables dynamic range >72 dB for tissue contrast discrimination. |
| Industrial Imaging Sensor Interface | Test & Measurement Digitizer Module |
Use Scenario: Capturing line-scan CCD or CMOS sensor outputs in automated optical inspection (AOI) systems. IC Role / Device Role / Timing Role: High-speed analog front-end converting analog pixel voltages into digital streams for FPGA-based image processing. Use Value: 4 V p-p input span accommodates wide-output swing sensors; OTR flag flags saturation during rapid intensity transitions in defect detection. |
Use Scenario: Core ADC in benchtop oscilloscopes or spectrum analyzers requiring ≥10 MSPS sampling with DC accuracy. IC Role / Device Role / Timing Role: Precision digitizer with calibrated internal reference; used with external anti-aliasing filters and low-noise op-amp drivers. Use Value: ±0.5% gain error and ±0.3% zero error at 25°C enable single-point calibration; 105 MHz full-power bandwidth supports fast transient capture. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9220ARSZ | 10-bit, 20 MSPS; lower resolution and speed; same 28-lead SSOP footprint and pinout. | Suitable for cost-sensitive applications where 10-bit ENOB suffices (e.g., basic data loggers). | Select when system SNR requirement is ≤62 dB and sampling rate ≤20 MSPS - avoids redesign but trades resolution. |
| ADS5271IPFP | 12-bit, 40 MSPS; higher speed, LVDS outputs, different package (64-pin HTQFP), no integrated reference. | Required for wider instantaneous bandwidth (e.g., broadband spectrum monitoring above 20 MHz). | Choose when >25 MSPS throughput is mandatory and board space allows larger package; external reference adds design overhead. |
Compared with AD9225ARSRL, AD9220ARSZ offers lower power (220 mW) and cost but sacrifices 2 bits of resolution and 5 MSPS speed; ADS5271IPFP delivers higher throughput and better jitter immunity but demands LVDS termination, additional reference circuitry, and PCB redesign.
Availability
AD9225ARSRL is available at Aetrix Electronics and suitable for communications infrastructure, medical ultrasound equipment, industrial imaging systems, and test instrumentation requiring stable component supply and long-term obsolescence management.
Supply support for AD9225ARSRL 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 AD9225ARSRL belongs to Analog Devices' high-speed precision ADC product line, designed specifically for applications demanding high dynamic range, low power, and monolithic integration in communications, medical imaging, and industrial sensing.
FAQ
What is the maximum recommended clock jitter for optimal SNR performance of the AD9225ARSRL?
The AD9225ARSRL specifies aperture jitter of 1 ps rms. To maintain its rated 71 dB SNR at 2.5 MHz input, total clock jitter (including source, distribution, and PCB-induced) must remain ≤0.5 ps rms. Exceeding this degrades SNR approximately 6 dB per doubling of jitter; verified measurements show SNR drops to 67 dB at 1.2 ps rms jitter. The AD9225ARSRL datasheet Figure 1 and AC specifications section confirm this dependency.
Can the AD9225ARSRL operate with a 3.3 V digital supply while using a 5 V analog supply?
Yes, the AD9225ARSRL supports independent supply rails: AVDD = 5 V (±5%) and DRVDD = 2.85 V to 5.25 V. When DRVDD = 3.3 V, digital outputs meet VOH ≥ 2.8 V and VOL ≤ 0.4 V under 0.5 mA load, ensuring reliable interfacing with 3.3 V FPGAs. This dual-supply capability is explicitly defined in the Digital Specifications table on page 4 of the AD9225ARSRL datasheet.
Does the AD9225ARSRL require external decoupling capacitors on CAPT and CAPB pins?
Yes, the AD9225ARSRL requires external decoupling on CAPT and CAPB: 0.1 µF ceramic + 10 µF tantalum per pin, as shown in Figure 6 of the datasheet. Omitting these causes reference instability, increased noise, and degraded SFDR (measured drop of >10 dB). The internal reference amplifier A2 relies on this network for compensation and low-impedance drive - confirmed in the Reference Operation section (pages 10–11).
Is the AD9225ARSRL pin-compatible with other members of the AD922x family?
Yes, the AD9225ARSRL is pin-compatible with AD9220, AD9221, AD9223, and AD9224 in the same 28-lead SSOP package. All share identical pin functions, power sequencing, and interface timing. This allows drop-in replacement for resolution/speed trade-offs - documented in the Product Highlights section (page 2) and Pin Configuration diagram (page 5) of the AD9225ARSRL datasheet.
What input configuration yields the best THD performance for the AD9225ARSRL?
The AD9225ARSRL achieves best THD (–82 dB at 2.5 MHz) with a 4 V p-p differential input, matched source impedances on VINA and VINB, and proper series resistor isolation (30–100 Ω) between driver and ADC inputs. Single-ended operation degrades THD by ~3–5 dB due to common-mode distortion - validated in TPC 3 and TPC 8 of the AD9225ARSRL Typical Performance Characteristics (page 7).
AD9225ARSRL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 28-SSOP (0.209", 5.30mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 25M
- 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:
- External, Internal
- Voltage - Supply, Analog:
- 5V
- Voltage - Supply, Digital:
- 2.85V ~ 5.25V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 28-SSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD9225ARSRL FAQ
1.How can I place an order for AD9225ARSRL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD9225ARSRL 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 AD9225ARSRL reliable?
The price and inventory of AD9225ARSRL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD9225ARSRL is usually 5 days.
3.What payment methods are accepted for AD9225ARSRL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD9225ARSRL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD9225ARSRL?
AD9225ARSRL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD9225ARSRL 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 AD9225ARSRL?
For technical support, including AD9225ARSRL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD9225ARSRL requirements.
6.How does Aetrix verify that AD9225ARSRL is sourced from the original manufacturer or authorized distributors?
All AD9225ARSRL 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 AD9225ARSRL meets industry standards.
7.What is the process for return or replacement of AD9225ARSRL?
All AD9225ARSRL units undergo pre-shipment inspection (PSI). If there is an issue with AD9225ARSRL, 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 AD9225ARSRL part is unused and in its original packaging.
Return procedure for AD9225ARSRL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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