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Texas Instruments ADC3222IRGZT
- Part No.:
- ADC3222IRGZT
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
ADC3222IRGZT.pdf
- Description:
- IC ADC 12BIT PIPELINED 48VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,278
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Product details
Overview
ADC3222IRGZT 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 70.7 dBFS SNR at 70 MHz input. It delivers 105 dB channel isolation and supports multi-chip synchronization for high-density RF sampling systems in radar and communications test equipment.
For engineers reviewing the ADC3222IRGZT datasheet, ADC3222IRGZT pinout, ADC3222IRGZT application, or ADC3222IRGZT equivalent, key selection criteria include its 50-MSPS sampling rate, SLVDS two-wire output architecture, internal PLL clock multiplication, SYSREF input for JESD204B-compatible timing alignment, and VQFN-48 thermal performance (RθJB = 3.0°C/W).
Technical Context
The ADC3222IRGZT implements a fully differential pipeline architecture with on-chip dither and chopper to enhance SFDR and reduce harmonic distortion. Its internal PLL derives the bit clock from the input sampling clock, enabling flexible clock division (÷1, ÷2, ÷4) and precise frame/bit clock generation via LVDS outputs (FCLKP/M, DCLKP/M).
It uses a 1.8-V single-supply analog and digital domain with separate AVDD/DVDD pins, supports –1-dBFS differential analog inputs up to 540 MHz bandwidth, and features hardware reset (RESET), power-down control (PDN), and SPI-configurable serial interface (SCLK/SDATA/SEN/SDOUT) for register access and mode control.
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; enables Nyquist zone up to 25 MHz for real signals or complex IF sampling at higher frequencies. |
| SNR @ fIN = 70 MHz | 70.7 dBFS - measured full-band signal-to-noise ratio; determines minimum detectable signal level in wideband receivers. |
| SFDR @ fIN = 70 MHz | 93 dBc - spurious-free dynamic range; critical for detecting weak signals adjacent to strong interferers in spectrum analyzers. |
| Channel Isolation | 105 dB - crosstalk suppression between channels A and B; ensures independent signal paths for I/Q or diversity reception. |
| Power Dissipation | 245 mW total - includes 81 mA analog and 75 mA digital supply current at 1.8 V; enables thermally constrained PCB layouts. |
| Analog Input Bandwidth | 540 MHz - 3-dB small-signal bandwidth with 50-Ω differential source/termination; supports direct RF sampling up to L-band. |
Pinout & Package
VQFN-48 package (7 mm × 7 mm) with exposed thermal pad; RoHS-compliant, moisture-sensitive level 3 per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| INAP / INAM | Differential analog input, Channel A | Accepts ±1 VPP differential signal; common-mode voltage referenced to VCM output (0.95 V typical). |
| INBP / INBM | Differential analog input, Channel B | Independent of Channel A; enables simultaneous dual-signal acquisition without multiplexing latency. |
| CLKP / CLKM | Differential sampling clock input | Accepts LVDS/LVPECL/sine wave; internal clock divider supports ÷1, ÷2, ÷4 for system clock flexibility. |
| SYSREFP / SYSREFM | Differential system reference input | Enables deterministic latency and multi-device synchronization; internally biased to 0.9 V. |
| DA0P / DA0M, DA1P / DA1M | LVDS serial data outputs, Channel A | Two-wire serialized 12-bit output per channel; reduces interface lines vs. parallel bus. |
| DB0P / DB0M, DB1P / DB1M | LVDS serial data outputs, Channel B | Independent data lanes; allows time-aligned dual-channel capture in SDR or beamforming systems. |
| FCLKP / FCLKM, DCLKP / DCLKM | LVDS frame and bit clock outputs | Provide timing references for FPGA or ASIC deserialization; eliminate need for external clock recovery. |
| RESET, PDN | Hardware control inputs | Active-high asynchronous reset and power-down; internal 150-kΩ pull-down resistors simplify board design. |
Key Features
| Feature | Design Value |
|---|---|
| Serial LVDS interface (two-wire) | Reduces PCB routing density by >60% vs. parallel 12-bit interface; supports 50-Ω differential trace layout. |
| Internal PLL clock multiplication | Generates precise bit clock from input sampling clock; eliminates external clock synthesizer in compact designs. |
| Multi-chip synchronization support | Uses SYSREF input and deterministic latency path to align sampling across multiple ADC3222IRGZT devices. |
| On-chip dither and chopper | Improves SFDR by suppressing harmonic distortion and reducing code-dependent nonlinearity in high-IF applications. |
| Pin-to-pin compatibility with 14-bit ADC3242 | Enables resolution upgrade without PCB redesign; shares identical VQFN-48 footprint and pin functions. |
Applications
| Radar and Smart Antenna Arrays | Communications Test Equipment |
|---|---|
Use Scenario: Real-time digitization of phase-coherent RF returns from multiple antenna elements in pulsed Doppler radar. IC Role / Device Role / Timing Role: Dual-channel ADC capturing synchronized I/Q samples at 50 MSPS for beamforming and Doppler processing. Use Value: 105 dB channel isolation prevents cross-coupling between adjacent receive paths; SLVDS interface simplifies high-channel-count backplane routing. |
Use Scenario: Wideband signal analysis in vector network analyzers requiring simultaneous capture of stimulus and response signals. IC Role / Device Role / Timing Role: High-linearity ADC digitizing differential IF outputs from mixers with minimal added noise or distortion. Use Value: 70.7 dBFS SNR and 93 dBc SFDR at 70 MHz enable accurate measurement of low-level harmonics and spurs in RF components. |
| Software-Defined Radios (SDRs) | Microwave Receivers |
Use Scenario: Flexible front-end for reconfigurable transceivers supporting multiple wireless standards (LTE, WiMAX, 5G NR sub-6 GHz). IC Role / Device Role / Timing Role: Dual ADC providing independent I/Q sampling paths with deterministic latency for digital up/down-conversion. Use Value: SYSREF input and multi-chip sync capability allow coherent operation across multiple ADC3222IRGZT units in MIMO architectures. |
Use Scenario: Digitization of downconverted L-band or S-band microwave signals in satellite ground stations and electronic warfare receivers. IC Role / Device Role / Timing Role: High-input-bandwidth ADC accepting 540 MHz analog bandwidth signals directly from image-reject mixers. Use Value: 540 MHz analog input bandwidth supports direct sampling of IF signals up to 230 MHz without additional amplification or filtering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel, 12-bit, serial-output ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADC3221IRGZT | 25-MSPS max sampling rate; lower power (205 mW), reduced SFDR (87 dBc @ 70 MHz). | Better suited for low-power, narrowband monitoring applications where 50-MSPS is not required. | Select when system clock constraints or thermal budget limit maximum sampling rate. |
| ADC32J22IRGZT | JESD204B interface (not SLVDS); same 50-MSPS rating but higher integration with serializer PHY and lane alignment. | Required for FPGA-based systems using Xilinx Ultrascale+ or Intel Stratix 10 with native JESD204B IP cores. | Choose when migrating to JESD204B ecosystem or needing deterministic latency with subclass 1 compliance. |
Compared with ADC3221IRGZT, the ADC3222IRGZT provides +25 MSPS headroom and +6 dBc SFDR at 70 MHz; compared with ADC32J22IRGZT, it offers simpler interface timing and no serializer configuration overhead, at the cost of FPGA resource efficiency in high-channel-count systems.
Availability
ADC3222IRGZT is available at Aetrix Electronics and suitable for radar signal processing, communications test instrumentation, and software-defined radio development requiring stable component supply and long-term production continuity.
Supply support for ADC3222IRGZT 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, embedded processing, and high-performance data converters for industrial, automotive, and communications markets.
The ADC322x family was designed for high-dynamic-range, low-power digitization in demanding RF and IF sampling applications-specifically targeting radar, test equipment, and broadband communications infrastructure.
FAQ
What is the maximum sampling rate supported by the ADC3222IRGZT?
The ADC3222IRGZT supports a maximum sampling rate of 50 MSPS, as confirmed in Section 6.6 of the SBAS672E datasheet. This rate is fixed for the ADC3222 variant and differs from other members of the ADC322x family (e.g., ADC3221 = 25 MSPS, ADC3224 = 125 MSPS). Operation above 50 MSPS is not functional or characterized for ADC3222IRGZT.
Does the ADC3222IRGZT require separate analog and digital power supplies?
Yes, the ADC3222IRGZT requires two independent 1.8-V supplies: AVDD for the analog section (pins 6, 7, 8, 9, 12, 17, 20, 25, 28, 29, 30) and DVDD for the digital interface (pins 2, 4, 33, 35). Section 6.3 specifies recommended operating conditions, and Section 6.6 lists distinct analog and digital supply currents (81 mA and 75 mA respectively at 50 MSPS).
Can the ADC3222IRGZT be used with a single-ended clock input?
No, the ADC3222IRGZT accepts only differential clock inputs via CLKP and CLKM pins (Section 5.1). The device does not support single-ended clock drive; attempting to use a single-ended source violates absolute maximum ratings and degrades jitter performance. AC-coupled LVDS, LVPECL, or sine wave sources meeting the 0.2–1.5 VPP differential amplitude specification are required.
What is the purpose of the VCM pin on the ADC3222IRGZT?
The VCM pin (pin 24) outputs a buffered 0.95-V common-mode reference voltage used to bias the differential analog inputs (INAP/INAM, INBP/INBM). As specified in Section 6.5, VCM has a typical value of 0.95 V with ±0.15-V tolerance and can source up to 10 mA. It must be decoupled locally and is not an input-no external voltage should be applied to this pin.
Is the ADC3222IRGZT pin-compatible with the 14-bit ADC3242IRGZT?
Yes, the ADC3222IRGZT is explicitly stated as pin-to-pin compatible with the 14-bit ADC3242IRGZT per Section 1 "Features" and the Device Comparison Table in the SBAS672E datasheet. Both share identical VQFN-48 (RGZ) packaging, pin count, pinout, and power/ground assignments-enabling resolution upgrades without PCB revision.
ADC3222IRGZT 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:
- 12
- Sampling Rate (Per Second):
- 50M
- Number of Inputs:
- 2
- Input Type:
- Differential
- Data Interface:
- LVDS - Serial
- Configuration:
- ADC
- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- 2
- Architecture:
- Pipelined
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 1.7V ~ 1.9V
- Voltage - Supply, Digital:
- 1.7V ~ 1.9V
- Features:
- Simultaneous Sampling
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 48-VQFN (7x7)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADC3222IRGZT FAQ
1.How can I place an order for ADC3222IRGZT through Aetrix?
Please submit a Request for Quotation (RFQ) for ADC3222IRGZT 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 ADC3222IRGZT reliable?
The price and inventory of ADC3222IRGZT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADC3222IRGZT is usually 5 days.
3.What payment methods are accepted for ADC3222IRGZT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADC3222IRGZT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADC3222IRGZT?
ADC3222IRGZT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADC3222IRGZT 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 ADC3222IRGZT?
For technical support, including ADC3222IRGZT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADC3222IRGZT requirements.
6.How does Aetrix verify that ADC3222IRGZT is sourced from the original manufacturer or authorized distributors?
All ADC3222IRGZT 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 ADC3222IRGZT meets industry standards.
7.What is the process for return or replacement of ADC3222IRGZT?
All ADC3222IRGZT units undergo pre-shipment inspection (PSI). If there is an issue with ADC3222IRGZT, 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 ADC3222IRGZT part is unused and in its original packaging.
Return procedure for ADC3222IRGZT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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