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Texas Instruments ADC32J22IRGZT
- Part No.:
- ADC32J22IRGZT
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
ADC32J22IRGZT.pdf
- Description:
- IC ADC 12BIT PIPELINED 48VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,874
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Product details
Overview
ADC32J22IRGZT from Texas Instruments is a dual-channel, 12-bit, 50-MSPS analog-to-digital converter with JESD204B serial interface, 70.3 dBFS SNR at 70 MHz input, 105 dB channel isolation, and ultralow 281 mW total power dissipation. It serves as the front-end digitizer in high-dynamic-range RF receivers for cellular base stations and radar systems.
For engineers reviewing the ADC32J22IRGZT datasheet, ADC32J22IRGZT pinout, ADC32J22IRGZT application, or ADC32J22IRGZT equivalent, this page delivers verified specifications, validated pin functions, confirmed use cases in multichip-synchronized SDRs and microwave receivers, and two technically documented alternative parts for design flexibility.
Technical Context
The ADC32J22IRGZT implements a dual-channel pipeline architecture with internal dithering and flexible clock division (÷1, ÷2, ÷4) to support system-level timing synchronization via SYSREF and SYNC~ signals. Its JESD204B subclass 0/1/2-compliant interface operates up to 3.2 Gbps using one lane per ADC channel.
It features an integrated PLL that multiplies the sampling clock by 20 to generate the JESD204B bit clock, supports multichip synchronization, and delivers consistent AC performance across –40°C to +85°C with 1.8-V analog and digital supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - Enables precise digitization of wideband RF signals with >70 dB SNR and <±0.4 LSB INL. |
| Sampling Rate | 50 MSPS - Matches low-intermediate-frequency (IF) sampling requirements in cost-sensitive SDR and test equipment designs. |
| SNR @ 70 MHz | 70.3 dBFS - Ensures high-fidelity capture of narrowband carriers in crowded spectral environments like LTE base stations. |
| Channel Isolation | 105 dB - Prevents crosstalk between simultaneous A/B channel inputs in diversity receiver architectures. |
| Power Dissipation | 281 mW total - Reduces thermal load and simplifies cooling in densely packed RF front-end modules. |
| JESD204B Speed | Up to 3.2 Gbps - Minimizes PCB routing complexity with single-lane serialization per channel, supporting compact layout. |
| Analog Input BW | 450 MHz - Supports direct sampling of L-band and S-band signals without external IF filtering. |
Pinout & Package
VQFN-48 (7 mm × 7 mm) package with exposed thermal pad on backside for enhanced heat dissipation in high-density RF layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLKP / CLKM | Differential sampling clock input | Accepts ac-coupled LVDS/LPECL sine wave; enables precise aperture timing control for coherent multichip sync. |
| INAP / INAM, INBP / INBM | Differential analog inputs (Ch A & Ch B) | 6.5 kΩ input resistance, 5.2 pF capacitance - Optimized for 50-Ω source matching and wideband signal integrity. |
| DAP / DAM, DBP / DBM | JESD204B serial outputs (Ch A & Ch B) | 0.4 V differential swing, AVDD–0.2 V common-mode - Directly interfaces with FPGA JESD204B receivers (e.g., Xilinx Kintex-7). |
| SYSREFP / SYSREFM | Differential system reference input | Enables deterministic latency alignment across multiple ADCs in time-sensitive phased-array radar systems. |
| OVRA / OVRB | Overrange indicators (Ch A & Ch B) | Real-time saturation detection - Allows dynamic AGC adjustment without interrupting data flow. |
| PDN, RESET, SEN | Power-down, reset, serial interface enable | Internal 150-kΩ pullup/pulldown resistors - Simplifies board-level control logic and eliminates external bias components. |
Key Features
| Feature | Design Value |
|---|---|
| Internal dithering | Improves SFDR by up to 5 dB at low input amplitudes, critical for detecting weak signals adjacent to strong interferers. |
| Flexible clock divider | Supports ÷1/÷2/÷4 modes - Enables use of common system clocks (e.g., 100 MHz, 200 MHz) without requiring dedicated high-frequency sources. |
| 105 dB channel isolation | Maintains independent signal paths for I/Q or diversity reception - Eliminates need for external isolation components in dual-antenna systems. |
| JESD204B subclass 1 compliance | Guarantees deterministic latency and frame alignment - Required for real-time beamforming and TDD-based MIMO synchronization. |
| VCM output (0.95 V) | Provides stable common-mode reference for external driver stages - Reduces layout sensitivity and improves THD consistency across temperature. |
Applications
| Cellular Base Station Receiver | Radar Signal Digitization |
|---|---|
Use Scenario: Multi-carrier, multi-mode LTE/5G macrocell base station digitizing dual IF signals from quadrature downconverters. IC Role / Device Role / Timing Role: Dual-channel ADC front-end with deterministic JESD204B subclass 1 latency and SYSREF-aligned sampling. Use Value: 105 dB channel isolation prevents inter-carrier interference; 70.3 dBFS SNR ensures accurate EVM measurement for 256-QAM signals. | Use Scenario: Active electronically scanned array (AESA) radar digitizing phase-coherent return signals from multiple antenna elements. IC Role / Device Role / Timing Role: Synchronized dual-channel sampling node enabling real-time beamforming with sub-ns channel matching. Use Value: ±70 ps aperture delay matching and multichip SYSREF support ensure coherent summation across distributed ADCs. |
| Software Defined Radio (SDR) | Microwave Test Equipment |
Use Scenario: Portable wideband SDR platform covering 10 MHz–3 GHz using direct RF sampling and digital downconversion. IC Role / Device Role / Timing Role: Low-power, high-linearity ADC enabling battery-operated field-deployable receivers with 450 MHz analog bandwidth. Use Value: 281 mW total power and 50 MSPS operation extend runtime while maintaining >11-bit ENOB across Nyquist zone. | Use Scenario: Vector network analyzer (VNA) capturing fast transient responses during calibration sweeps and impedance measurements. IC Role / Device Role / Timing Role: Precision digitizer with <±0.4 LSB INL and 70.3 dBFS SNR for high-accuracy amplitude/phase fidelity. Use Value: DNL ≤ ±0.1 LSB ensures monotonic response essential for error-free envelope detection and time-domain reflectometry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel, 12-bit, JESD204B ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADC32J23IRGZT | 80 MSPS max sampling rate; 329 mW typical power at 80 MSPS vs. 281 mW at 50 MSPS | Better suited for higher IF sampling (e.g., 122.88 MHz LTE FDD) where increased throughput justifies extra power | Select ADC32J23IRGZT when system clock architecture supports ≥80 MSPS and SNR margin allows trade-off for bandwidth |
| ADS42JB49IRGCT | 14-bit resolution, 250 MSPS, LVDS interface (not JESD204B); 1.8-V/3.3-V dual-supply vs. single 1.8-V | Targeted at high-precision instrumentation requiring >75 dB SNR and wider Nyquist bandwidth, but lacks JESD204B multichip sync | Choose ADS42JB49IRGCT only if JESD204B is not required and 14-bit ENOB is mandatory for harmonic analysis applications |
Compared with ADC32J23IRGZT and ADS42JB49IRGCT, ADC32J22IRGZT provides optimal balance of low power (281 mW), JESD204B synchronization capability, and sufficient SNR (70.3 dBFS) for 50 MSPS IF sampling-making it ideal for cost- and power-constrained SDR and radar front ends where deterministic latency is critical.
Availability
ADC32J22IRGZT is available at Aetrix Electronics and suitable for cellular infrastructure, radar signal processing, and software-defined radio applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for ADC32J22IRGZT 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 delivering analog and embedded processing solutions for industrial, automotive, and communications markets.
The ADC32J2x family was designed specifically for high-dynamic-range, low-power digitization in RF-intensive applications including multiband base stations, phased-array radar, and broadband test equipment.
FAQ
What is the maximum sampling rate supported by the ADC32J22IRGZT?
The ADC32J22IRGZT supports a maximum sampling rate of 50 MSPS, as confirmed in Section 7.6 of the SBAS668A datasheet. This fixed-rate specification distinguishes it from higher-speed variants in the same family (e.g., ADC32J23 at 80 MSPS). The device achieves 70.3 dBFS SNR and 105 dB channel isolation at this rate, making it optimized for lower-IF and cost-sensitive RF digitization tasks where power efficiency is prioritized over raw bandwidth.
Does the ADC32J22IRGZT support JESD204B subclass 1 synchronization?
Yes, the ADC32J22IRGZT fully supports JESD204B subclass 1, including deterministic latency, SYSREF alignment, and SYNC~-triggered initialization. As stated in the "Features" section of SBAS668A, it complies with subclass 0, 1, and 2 up to 3.2 Gbps. This enables precise multichip synchronization in phased-array radar and MIMO base station systems where sample alignment across multiple ADCs is mandatory for coherent signal processing.
What are the power supply requirements for the ADC32J22IRGZT?
The ADC32J22IRGZT requires two 1.8-V supplies: AVDD for analog circuitry and DVDD for digital logic, both specified from 1.7 V to 1.9 V per Section 7.3 of SBAS668A. Total typical power dissipation is 281 mW at 50 MSPS (134 mA analog + 22 mA digital). The device includes internal pulldown resistors on PDN, RESET, SCLK, and SDATA pins, and a pullup on SEN-eliminating need for external biasing components.
How does the internal dithering feature improve performance in the ADC32J22IRGZT?
Internal dithering in the ADC32J22IRGZT reduces harmonic distortion and enhances spurious-free dynamic range (SFDR), particularly at low input signal levels. As shown in Table 7.11, SFDR improves from 80.5 dBc to 95 dBc at 10 MHz input with dither enabled. This directly benefits applications like spectrum monitoring and weak-signal detection in SDRs, where suppression of non-harmonic spurs is essential for accurate signal classification and demodulation.
What is the analog input bandwidth and full-scale range of the ADC32J22IRGZT?
The ADC32J22IRGZT has a 450 MHz analog input bandwidth (3 dB point) and a differential full-scale input voltage of 2.0 VPP, as specified in Sections 7.3 and 7.5 of SBAS668A. Its input resistance is 6.5 kΩ and input capacitance is 5.2 pF, optimized for 50-Ω source termination. These parameters allow direct sampling of L-band and S-band RF signals without external baluns or amplifiers in many high-frequency receiver architectures.
ADC32J22IRGZT 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:
- JESD204B
- 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:
- -
ADC32J22IRGZT FAQ
1.How can I place an order for ADC32J22IRGZT through Aetrix?
Please submit a Request for Quotation (RFQ) for ADC32J22IRGZT 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 ADC32J22IRGZT reliable?
The price and inventory of ADC32J22IRGZT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADC32J22IRGZT is usually 5 days.
3.What payment methods are accepted for ADC32J22IRGZT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADC32J22IRGZT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADC32J22IRGZT?
ADC32J22IRGZT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADC32J22IRGZT 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 ADC32J22IRGZT?
For technical support, including ADC32J22IRGZT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADC32J22IRGZT requirements.
6.How does Aetrix verify that ADC32J22IRGZT is sourced from the original manufacturer or authorized distributors?
All ADC32J22IRGZT 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 ADC32J22IRGZT meets industry standards.
7.What is the process for return or replacement of ADC32J22IRGZT?
All ADC32J22IRGZT units undergo pre-shipment inspection (PSI). If there is an issue with ADC32J22IRGZT, 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 ADC32J22IRGZT part is unused and in its original packaging.
Return procedure for ADC32J22IRGZT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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