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Texas Instruments ADC32J42IRGZR
- Part No.:
- ADC32J42IRGZR
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
ADC32J42IRGZR.pdf
- Description:
- IC ADC 48VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,667
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Product details
Overview
ADC32J42IRGZR from Texas Instruments is a dual-channel, 14-bit, 50-MSPS analog-to-digital converter with JESD204B serial interface, 72.2 dBFS SNR at 70 MHz input, 87 dBc SFDR, and ultralow power consumption of 227 mW per channel. It serves as the front-end digitizer in high-dynamic-range RF receivers for cellular base stations and radar systems.
For engineers reviewing the ADC32J42IRGZR datasheet, ADC32J42IRGZR pinout, ADC32J42IRGZR application, or ADC32J42IRGZR equivalent, key selection considerations include its 50-MSPS sampling rate, VQFN-48 package, JESD204B Subclass 0/1/2 compliance up to 3.2 Gbps, internal dither, and multichip synchronization support via SYSREF.
Technical Context
The ADC32J42IRGZR employs a pipeline architecture with on-chip clock divider (÷1, ÷2, ÷4) and integrated PLL that multiplies the input sampling clock by 20 to generate the JESD204B bit clock. Its analog front end supports differential inputs up to 450 MHz bandwidth and 2.0 VPP full-scale range with 105 dB channel isolation.
JESD204B interface operates with one lane per ADC channel at up to 3.2 Gbps, supporting subclass 1 for deterministic latency. Internal dither improves SFDR performance, while flexible SYSREF and SYNC~ inputs enable precise multidevice timing alignment in phased-array and SDR systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit - delivers 11.7 ENOB at 10 MHz input, enabling high-fidelity signal capture in wideband receivers |
| Sampling Rate | 50 MSPS - optimized for medium-bandwidth applications such as motor control feedback and vector network analyzers |
| SNR / SFDR | 72.2 dBFS / 87 dBc at fIN = 70 MHz - ensures clean digitization of high-frequency carriers with minimal noise floor elevation |
| Power Consumption | 227 mW per channel at 50 MSPS - reduces thermal load and simplifies power delivery in dense RF modules |
| JESD204B Speed | Up to 3.2 Gbps per lane - minimizes PCB routing complexity versus parallel LVDS interfaces |
| Analog Input BW | 450 MHz (3 dB) - supports direct RF sampling of L-band and S-band signals without external downconversion |
| Channel Isolation | 105 dB - prevents crosstalk between simultaneous A/B channel acquisitions in diversity or quadrature receivers |
Pinout & Package
VQFN-48 (7 mm × 7 mm) package with exposed thermal pad on underside for enhanced heat dissipation in compact RF assemblies.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLKP / CLKM | Differential sampling clock input | Accepts ac-coupled LVDS or sine-wave clocks; enables precise timing control for synchronous sampling |
| INAP / INAM, INBP / INBM | Differential analog inputs (Ch A & Ch B) | Support 2.0 VPP full-scale, 450 MHz bandwidth, and common-mode voltage output (VCM) for matched termination |
| DAP / DAM, DBP / DBM | JESD204B serial data outputs (Ch A & Ch B) | LVDS-compatible differential pairs; each carries 14-bit data at up to 3.2 Gbps with embedded clock recovery |
| SYSREFP / SYSREFM | Differential system reference input | Enables deterministic latency alignment across multiple ADCs in multichip synchronized systems |
| OVRA / OVRB | Overrange indicators (Ch A & Ch B) | Open-drain outputs flag saturation events in real time for automatic gain control or clipping mitigation |
Key Features
| Feature | Design Value |
|---|---|
| Flexible clock divider | ÷1, ÷2, ÷4 options allow use of lower-frequency system clocks while maintaining required sampling rates |
| Internal dither | Reduces harmonic distortion and improves SFDR by randomizing quantization error, especially beneficial for narrowband signals |
| JESD204B Subclass 1 | Guarantees deterministic latency and frame alignment across power cycles-critical for beamforming and TDD systems |
| Ultralow power per MSPS | 4.54 mW/MSPS at 50 MSPS - sets efficiency benchmark for 14-bit dual-channel ADCs in battery-constrained or thermally limited designs |
| Pin-to-pin compatibility | With 12-bit ADC32J22 - allows hardware reuse and scalable resolution upgrades without PCB redesign |
Applications
| Cellular Base Station Receiver | Radar Signal Digitization |
|---|---|
Use Scenario: Digitizing multiple carrier signals in multi-mode LTE/5G macrocell base station transceivers operating in 700–2600 MHz bands. IC Role / Device Role / Timing Role: Dual-channel front-end ADC capturing I/Q samples with 105 dB isolation to suppress inter-carrier interference. Use Value: 72.2 dBFS SNR and 87 dBc SFDR preserve EVM and ACLR performance; JESD204B reduces FPGA interface pin count by >70% vs. parallel LVDS. | Use Scenario: High-resolution pulse-Doppler sampling in active electronically scanned array (AESA) radar receivers requiring phase coherence across channels. IC Role / Device Role / Timing Role: Synchronized dual ADC providing time-aligned I/Q data streams for digital beamforming and clutter cancellation. Use Value: SYSREF- and SYNC~-enabled multichip synchronization ensures <±150 ps aperture delay matching between devices, critical for beam pointing accuracy. |
| Motor Control Feedback | Communications Test Equipment |
Use Scenario: Real-time current and voltage sensing in industrial servo drives using space-vector modulation at switching frequencies up to 20 kHz. IC Role / Device Role / Timing Role: Simultaneous sampling of motor phase currents and DC-link voltage with 50 MSPS rate and low-latency JESD204B output. Use Value: 14-bit resolution and ±1.5 LSB INL ensure accurate torque estimation; 227 mW/channel power enables integration into compact drive modules. | Use Scenario: Wideband signal analysis in handheld spectrum analyzers and vector signal analyzers requiring dynamic range >70 dB over 100 MHz instantaneous bandwidth. IC Role / Device Role / Timing Role: High-linearity digitizer capturing modulated waveforms (QAM, OFDM) with minimal distortion-induced EVM degradation. Use Value: 95 dBc HD2/HD3 at 70 MHz and 91 dBc non-harmonic SFDR enable accurate modulation error analysis without external calibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel, 14-bit ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADC32J43IRGZR | 80 MSPS max sampling rate; higher analog/digital supply current (152/31 mA vs. 134/22 mA) | Better suited for wider instantaneous bandwidth requirements (e.g., 120 MHz IF sampling) | Select ADC32J43IRGZR when system clock architecture supports ≥80 MSPS and higher power budget is acceptable |
| ADS42JB49IRGCT | 14-bit, 250 MSPS, JESD204B Subclass 1, but requires 3.3-V analog supply and lacks internal dither | Targeted at higher IF sampling (e.g., 185 MHz) where SNR trade-off for speed is acceptable | Choose ADS42JB49IRGCT only if >100 MSPS sampling is mandatory and external dithering can be implemented |
Compared with ADC32J43IRGZR and ADS42JB49IRGCT, the ADC32J42IRGZR offers optimal balance of ultra-low power (227 mW/ch), proven 72.2 dBFS SNR at 70 MHz, and seamless JESD204B integration-making it ideal for thermally constrained, medium-bandwidth RF digitization where deterministic latency and low distortion are prioritized over raw speed.
Availability
ADC32J42IRGZR is available at Aetrix Electronics and suitable for cellular infrastructure, radar signal processing, and precision test equipment requiring stable component supply and long-term manufacturability.
Supply support for ADC32J42IRGZR 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 RF signal chain solutions.
The ADC32J4x family was designed specifically for demanding, high-input-frequency applications requiring large dynamic range-targeting wireless infrastructure, defense radar, and instrumentation where linearity, power efficiency, and JESD204B interoperability are critical.
FAQ
What is the maximum sampling rate supported by the ADC32J42IRGZR?
The ADC32J42IRGZR supports a maximum sampling rate of 50 MSPS, as confirmed in Section 7.7 of the SBAS663A datasheet. This rate is fixed for the ADC32J42 variant and cannot be increased via clock divider configuration-the ÷1, ÷2, and ÷4 options adjust the required input clock frequency but do not extend the maximum sampling capability beyond 50 MSPS.
Does the ADC32J42IRGZR require an external reference voltage?
No, the ADC32J42IRGZR uses an internal reference and does not require an external reference voltage. The device's gain error specification (±3%FS due to internal reference inaccuracy) confirms the presence of an integrated reference, and no external REF pins or reference input terminals are defined in the pinout table or functional description.
Can the ADC32J42IRGZR operate with a 3.3-V digital interface?
Yes, the ADC32J42IRGZR digital control pins (RESET, SCLK, SEN, SDATA, PDN) support both 1.8-V and 3.3-V logic levels, as explicitly stated in Section 7.12 of the datasheet. However, the JESD204B serial data outputs (DAP/DAM/DBP/DBM) are LVDS-compatible and require 1.8-V termination-not 3.3-V.
What is the purpose of the VCM pin on the ADC32J42IRGZR?
The VCM pin on the ADC32J42IRGZR outputs a stable 0.95-V common-mode voltage used to bias the differential analog inputs (INAP/INAM, INBP/INBM). This eliminates the need for external common-mode generation circuitry and ensures optimal ADC performance when driving from transformer-coupled or amplifier-based signal chains with matched termination.
Is the ADC32J42IRGZR pin-compatible with other devices in the ADC32J4x family?
Yes, all ADC32J4x variants-including ADC32J42IRGZR, ADC32J43IRGZR, ADC32J44IRGZR, and ADC32J45IRGZR-share identical VQFN-48 (RGZ) packaging and pinout, as confirmed in the "Device Information" table and Pin Configuration section of SBAS663A. This allows drop-in replacement within the same sampling-rate tier when board layout accommodates thermal and power delivery requirements.
ADC32J42IRGZR 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:
- -
ADC32J42IRGZR FAQ
1.How can I place an order for ADC32J42IRGZR through Aetrix?
Please submit a Request for Quotation (RFQ) for ADC32J42IRGZR 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 ADC32J42IRGZR reliable?
The price and inventory of ADC32J42IRGZR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADC32J42IRGZR is usually 5 days.
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Once your ADC32J42IRGZR 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 ADC32J42IRGZR?
For technical support, including ADC32J42IRGZR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADC32J42IRGZR requirements.
6.How does Aetrix verify that ADC32J42IRGZR is sourced from the original manufacturer or authorized distributors?
All ADC32J42IRGZR 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 ADC32J42IRGZR meets industry standards.
7.What is the process for return or replacement of ADC32J42IRGZR?
All ADC32J42IRGZR units undergo pre-shipment inspection (PSI). If there is an issue with ADC32J42IRGZR, 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 ADC32J42IRGZR part is unused and in its original packaging.
Return procedure for ADC32J42IRGZR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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