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Texas Instruments ADC3222IRGZR
- Part No.:
- ADC3222IRGZR
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
ADC3222IRGZR.pdf
- Description:
- IC ADC 48VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,360
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Product details
Overview
ADC3222IRGZR from Texas Instruments is a dual-channel, 12-bit, 50-MSPS analog-to-digital converter with serial LVDS interface, 1.8-V single supply, and 105-dB channel isolation. It delivers SNR = 70.7 dBFS and SFDR = 95 dBc at fIN = 10 MHz, targeting high-dynamic-range RF sampling in radar and communications receivers.
For engineers reviewing the ADC3222IRGZR datasheet, ADC3222IRGZR pinout, ADC3222IRGZR application, or ADC3222IRGZR equivalent, this page provides verified specifications, VQFN-48 package details, real-world use cases in SDR and smart antenna arrays, and validated alternative options for system-level design continuity.
Technical Context
The ADC3222IRGZR integrates an internal PLL to multiply the input sampling clock for LVDS serialization, supports flexible clock division (÷1/÷2/÷4), and uses SYSREF inputs for multi-chip synchronization. Its analog front-end features 540-MHz input bandwidth and 2-VPP full-scale differential input range.
It implements internal dither and chopper circuitry to enhance AC performance and reduce harmonic distortion, while maintaining ultra-low power consumption of 116 mW per channel at 125 MSPS - though the ADC3222 variant operates up to 50 MSPS with 205-mW typical total dissipation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - defines quantization step size and dynamic range for baseband and IF sampling applications. |
| Sampling Rate | 50 MSPS - maximum sustained conversion rate for ADC3222; enables Nyquist zone up to 25 MHz without aliasing. |
| SNR @ 10 MHz | 70.7 dBFS - signal-to-noise ratio measured across full Nyquist band; determines minimum detectable signal level. |
| SFDR @ 10 MHz | 95 dBc - spurious-free dynamic range with dither enabled; critical for detecting weak signals near strong interferers. |
| Channel Isolation | 105 dB - crosstalk suppression between channels A and B; ensures independent signal paths in diversity receivers. |
| Supply Voltage | 1.8 V single supply - reduces board-level power delivery complexity and enables co-location with 1.8-V FPGAs and processors. |
| Interface | Serial LVDS (2-wire) - halves I/O count versus parallel interfaces; supports high-density PCB routing and EMI resilience. |
| Package | VQFN-48 (7 mm × 7 mm) - thermally enhanced exposed-pad package; RθJB = 3.0 °C/W enables stable operation at 85°C ambient. |
Pinout & Package
VQFN-48 (RGZ) package with 7 mm × 7 mm body and thermal pad on underside for efficient heat transfer to PCB ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| INAP / INAM | Differential analog input, Channel A | Accepts 2-VPP ac-coupled RF or IF signals; common-mode voltage set by internal VCM output (0.95 V). |
| INBP / INBM | Differential analog input, Channel B | Independent input path with 105-dB isolation from Channel A; supports diversity or quadrature sampling. |
| CLKP / CLKM | Differential sampling clock input | Accepts LVDS/LVPECL sine or square wave; internal divider supports ÷1/÷2/÷4 for flexible clock tree design. |
| DA0P / DA0M DA1P / DA1M |
LVDS serialized data outputs (Ch A) | Two-wire LVDS bus carries time-interleaved 12-bit samples at bit clock rate; eliminates parallel bus skew. |
| DB0P / DB0M DB1P / DB1M |
LVDS serialized data outputs (Ch B) | Separate LVDS pair for Channel B; allows independent timing alignment and termination control per channel. |
| DCLKP / DCLKM FCLKP / FCLKM |
LVDS bit/frame clock outputs | Provide synchronous timing references for FPGA capture logic; frame clock aligns sample boundaries across channels. |
| SYSREFP / SYSREFM | Differential system reference input | Enables deterministic latency and JESD204B-style multi-device synchronization; internally biased to 0.9 V. |
| PDN / RESET | Power-down and hardware reset | Active-high PDN enters low-power state (78 mW); RESET initializes internal registers and digital logic on power-up. |
Key Features
| Feature | Design Value |
|---|---|
| Internal PLL-based clock multiplication | Generates precise bit clock from sampling clock - eliminates need for external high-frequency clock sources. |
| Programmable clock divider (÷1/÷2/÷4) | Allows use of lower-frequency, lower-jitter system clocks while maintaining target sampling rate. |
| Multi-chip synchronization via SYSREF | Ensures deterministic phase alignment across multiple ADC3222IRGZR devices in phased-array or MIMO systems. |
| On-chip dither and chopper | Reduces harmonic distortion and improves SFDR consistency across process/voltage/temperature corners. |
| Ultra-low power per channel | 116 mW at 125 MSPS (scalable down to 205 mW total at 50 MSPS) - enables dense ADC arrays without thermal throttling. |
Applications
| Software-Defined Radio (SDR) | Radar Receiver Front-End |
|---|---|
Use Scenario: Wideband IF digitization in reconfigurable transceivers supporting multiple air interfaces (LTE, 5G NR, Wi-Fi). IC Role / Device Role / Timing Role: Dual-channel ADC captures I/Q baseband or low-IF signals with matched gain/phase for coherent demodulation. Use Value: 105-dB channel isolation prevents crosstalk-induced image rejection degradation; 70.7-dBFS SNR enables >12-bit ENOB in real-world RF environments. |
Use Scenario: Pulse-Doppler radar digitizing echo returns from multiple antenna elements in beamforming arrays. IC Role / Device Role / Timing Role: Simultaneous sampling of two receive channels with sub-ns skew for accurate time-of-flight calculation. Use Value: SYSREF-supported synchronization enables coherent integration across distributed ADC nodes; 540-MHz analog bandwidth supports X-band direct sampling. |
| Smart Antenna Systems | Communications Test Equipment |
Use Scenario: Real-time direction-of-arrival (DoA) estimation using phase-difference analysis across spatially separated antennas. IC Role / Device Role / Timing Role: Paired ADC channels acquire synchronized snapshots of identical RF signals with <1-ps inter-channel jitter. Use Value: Internal chopper/dither stabilizes offset/gain matching over temperature; 12-bit resolution preserves angular resolution at low SNR. |
Use Scenario: Vector signal analyzer capturing modulated waveforms for EVM and ACLR validation in 5G base station conformance testing. IC Role / Device Role / Timing Role: High-linearity digitizer feeding FPGA-based FFT and demodulation engines with minimal added noise floor. Use Value: 95-dBc SFDR at 10 MHz ensures clean spectral analysis of adjacent-channel interference; LVDS interface simplifies high-speed data streaming to host processor. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel, 12-bit ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADC3221IRGZR | Lower max sampling rate (25 MSPS); lower power (118 mW typ); identical pinout and interface. | Better suited for narrowband IF sampling where Nyquist zone ≤12.5 MHz suffices. | Select when system clock constraints or thermal budget require reduced throughput without changing layout. |
| ADC3223IRGZR | Higher max sampling rate (80 MSPS); higher power (285 mW typ); same VQFN-48 package and feature set. | Required for wider instantaneous bandwidths (e.g., 40-MHz LTE carriers or broadband spectrum monitoring). | Choose when future-proofing for higher bandwidth or migrating from legacy 25/50-MSPS designs to 80-MSPS capability. |
Compared with ADC3221IRGZR and ADC3223IRGZR, the ADC3222IRGZR offers optimal balance of power efficiency (205 mW typ), 50-MSPS throughput, and compatibility with existing 25–80 MSPS system architectures - making it ideal for mid-tier radar and SDR platforms requiring proven thermal and timing stability.
Availability
ADC3222IRGZR is available at Aetrix Electronics and suitable for radar receiver front-ends, software-defined radio transceivers, and smart antenna array systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for ADC3222IRGZR 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
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of expertise in high-performance data converters and signal chain solutions.
The ADC322x family was designed for demanding RF-sampling applications in communications infrastructure and defense electronics, emphasizing linearity, low power, and multi-device synchronization - directly addressing needs in 5G, radar, and test equipment.
FAQ
What is the maximum sampling rate supported by the ADC3222IRGZR?
The ADC3222IRGZR supports a maximum sampling rate of 50 MSPS, as confirmed in Section 6.6 of the SBAS672E datasheet. This is distinct from other members of the ADC322x family - ADC3221IRGZR is rated for 25 MSPS, while ADC3223IRGZR and ADC3224IRGZR support 80 MSPS and 125 MSPS respectively. The ADC3222IRGZR maintains full AC performance specifications including 70.7 dBFS SNR and 95 dBc SFDR at its rated 50 MSPS.
Does the ADC3222IRGZR require external voltage references or biasing circuits?
No, the ADC3222IRGZR does not require an external voltage reference. It uses an internal reference and generates its own VCM (common-mode voltage) output at 0.95 V, which is specified to remain within 0.8–1.1 V across temperature and supply variations. The analog input pins (INAP/INAM/INBP/INBM) are dc-coupled to this internal VCM node, eliminating the need for external bias networks in most configurations.
Can the ADC3222IRGZR be synchronized with other ADCs in a multi-chip system?
Yes, the ADC3222IRGZR supports deterministic multi-chip synchronization via its differential SYSREFP/SYSREFM inputs. When driven with a common SYSREF signal aligned to the device clock, it achieves sub-cycle latency matching across multiple ADC3222IRGZR units - a key requirement for phased-array radar and MIMO communications systems. This capability is explicitly documented in Section 8.4 and Figure 8-10 of the datasheet.
What package type and thermal characteristics apply to the ADC3222IRGZR?
The ADC3222IRGZR is packaged in a VQFN-48 (RGZ) format measuring 7 mm × 7 mm with an exposed thermal pad. Its thermal metrics include RθJB = 3.0 °C/W (junction-to-board) and RθJA = 25.7 °C/W (junction-to-ambient), enabling reliable operation at 85°C ambient when mounted on a 4-layer PCB with adequate copper pour under the thermal pad. These values are specified in Section 6.4 of the SBAS672E datasheet.
Is the ADC3222IRGZR pin-compatible with other devices in the ADC322x family?
Yes, all members of the ADC322x family - including ADC3221IRGZR, ADC3222IRGZR, ADC3223IRGZR, and ADC3224IRGZR - share identical VQFN-48 (RGZ) pinout and footprint, as confirmed in Figure 5-1 and Table 5-1 of the SBAS672E datasheet. This allows drop-in replacement across sampling rates without PCB redesign, provided power delivery and thermal management accommodate the higher current draw of the 80/125-MSPS variants.
ADC3222IRGZR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 48-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- -
- Sampling Rate (Per Second):
- -
- Number of Inputs:
- -
- Input Type:
- -
- Data Interface:
- -
- Configuration:
- -
- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- -
- Architecture:
- -
- Reference Type:
- -
- Voltage - Supply, Analog:
- -
- Voltage - Supply, Digital:
- -
- Features:
- -
- Operating Temperature:
- -
- Supplier Device Package:
- 48-VQFN (7x7)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADC3222IRGZR FAQ
1.How can I place an order for ADC3222IRGZR through Aetrix?
Please submit a Request for Quotation (RFQ) for ADC3222IRGZR 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 ADC3222IRGZR reliable?
The price and inventory of ADC3222IRGZR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADC3222IRGZR is usually 5 days.
3.What payment methods are accepted for ADC3222IRGZR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADC3222IRGZR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADC3222IRGZR?
ADC3222IRGZR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADC3222IRGZR 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 ADC3222IRGZR?
For technical support, including ADC3222IRGZR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADC3222IRGZR requirements.
6.How does Aetrix verify that ADC3222IRGZR is sourced from the original manufacturer or authorized distributors?
All ADC3222IRGZR 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 ADC3222IRGZR meets industry standards.
7.What is the process for return or replacement of ADC3222IRGZR?
All ADC3222IRGZR units undergo pre-shipment inspection (PSI). If there is an issue with ADC3222IRGZR, 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 ADC3222IRGZR part is unused and in its original packaging.
Return procedure for ADC3222IRGZR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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