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Texas Instruments ADC34J24IRGZT
- Part No.:
- ADC34J24IRGZT
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
ADC34J24IRGZT.pdf
- Description:
- IC ADC 12BIT 48VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,418
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Product details
Overview
ADC34J24IRGZT from Texas Instruments is a quad-channel, 12-bit, 125-MSPS analog-to-digital converter with JESD204B subclass 0/1/2 serial interface, 69.6 dBFS SNR at 70 MHz input, 105 dB channel isolation, and single 1.8-V supply operation - deployed in radar beamforming and multi-carrier cellular base station receivers.
For engineers reviewing the ADC34J24IRGZT datasheet, ADC34J24IRGZT pinout, ADC34J24IRGZT application, or ADC34J24IRGZT equivalent, key selection criteria include JESD204B lane count per channel (1 lane up to 160 MSPS), internal dither capability for SFDR enhancement, SYSREF-supported multi-chip synchronization, and VQFN-48 thermal performance (RθJA = 25.7°C/W).
Technical Context
The ADC34J24IRGZT integrates four independent 12-bit ADC cores sharing a common 1.8-V analog and digital supply, each with differential analog inputs (INxP/INxM), dedicated overrange indicators (OVRA–OVRD), and JESD204B serializer output pairs (DAP/DAM through DDP/DDM). Its internal PLL multiplies the sampling clock by 20 to generate the 2.5-Gbps bit clock required for 12-bit serialization.
It supports flexible clocking via programmable divide-by-1/2/4 on CLKP/CLKM, accepts external SYSREF for deterministic latency alignment across multiple devices, and enables system-level timing coherence through SYNCP~/SYNCM~ synch inputs - all while maintaining 105 dB near-channel isolation up to 100 MHz input frequency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Sampling Rate | 125 MSPS - fixed maximum rate for ADC34J24; determines Nyquist zone (0–62.5 MHz) and real-time bandwidth for wideband IF sampling. |
| Resolution | 12 bits - defines quantization step size (≈0.24 mV at 1.0 VPP full-scale) and theoretical SNR ceiling of 74 dB. |
| SNR @ 70 MHz | 69.6 dBFS - measured dynamic range with –1-dBFS input; indicates usable signal fidelity in high-frequency receiver front ends. |
| Channel Isolation | 105 dB - crosstalk suppression between adjacent channels at 10 MHz; critical for simultaneous multi-band signal capture without inter-channel leakage. |
| JESD204B Speed | Up to 3.2 Gbps - supports 1-lane-per-channel configuration at 125 MSPS, reducing PCB routing complexity versus parallel LVDS interfaces. |
| Power Dissipation | 715–1010 mW - total active power across AVDD/DVDD supplies; enables thermal design with VQFN-48 PowerPAD™ for industrial ambient (–40°C to +85°C). |
| Analog Input BW | 450 MHz - 3-dB small-signal bandwidth; allows direct sampling of L-band RF signals or high-IF architectures without external amplification. |
Pinout & Package
VQFN-48 (7 mm × 7 mm) package with exposed thermal pad (PowerPAD™) on underside for enhanced heat dissipation; RoHS-compliant, moisture-sensitive level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| INAP / INAM | Differential analog input, Channel A | Accepts ac-coupled ±1 VPP differential signal; requires matched 50-Ω termination for optimal linearity and bandwidth. |
| CLKP / CLKM | Differential sampling clock input | Supports LVDS, LPECL, or sine-wave clocks; internal divider enables system clock flexibility (divide-by-1/2/4). |
| DAP / DAM | JESD204B serial output, Channel A | LVDS-compatible differential pair; outputs 12-bit samples serialized at 2.5 Gbps (125 MSPS × 20) with embedded control characters. |
| SYSREFP / SYSREFM | Multi-device synchronization reference | Enables deterministic latency alignment across multiple ADC34J2x devices in time-coherent arrays (e.g., phased radar). |
| OVRA | Overrange flag, Channel A | Active-high open-drain indicator signaling input saturation; used for automatic gain control (AGC) feedback in receiver chains. |
| VCM | Common-mode voltage output | Provides 0.95 V reference for external driver biasing; ensures proper input common-mode compliance across all four channels. |
Key Features
| Feature | Design Value |
|---|---|
| Internal dither algorithm | Reduces harmonic distortion and improves SFDR by 3–5 dBc at mid-band frequencies without external components. |
| Quad-channel isolation | 105 dB near-channel crosstalk suppression enables independent signal processing paths in MIMO and beamforming systems. |
| JESD204B subclass 1 support | Guarantees deterministic latency and frame alignment across power cycles - essential for coherent multi-ADC timing in SDR platforms. |
| Flexible input clock buffer | Programmable divide-by-1/2/4 eliminates need for external clock dividers, simplifying clock tree design in dense RF modules. |
| Single 1.8-V supply | Eliminates dual-supply sequencing and reduces BOM count; AVDD and DVDD share same rail with separate decoupling requirements. |
Applications
| Radar and Smart Antenna Arrays | Multi-Carrier Cellular Base Stations |
|---|---|
Use Scenario: Phased-array radar digitizing multiple antenna element IF outputs simultaneously for real-time beam steering. IC Role / Device Role / Timing Role: Quad-channel ADC capturing synchronized I/Q data streams from four receive chains with sub-sample latency matching. Use Value: 105 dB channel isolation prevents beam pattern corruption; JESD204B subclass 1 ensures deterministic timing across distributed ADCs. | Use Scenario: Wideband LTE-A base station supporting concurrent 20+ MHz carriers across multiple frequency bands. IC Role / Device Role / Timing Role: Digitizing multi-band IF signals from quadrature demodulators with precise channel-to-channel phase coherence. Use Value: 69.6 dBFS SNR at 70 MHz preserves EVM in high-order QAM; internal dither improves ACLR by suppressing spurious tones. |
| Munitions Guidance | Software Defined Radios (SDRs) |
Use Scenario: Miniaturized seeker head acquiring and tracking RF targets using adaptive waveform analysis. IC Role / Device Role / Timing Role: High-reliability ADC sampling Doppler-shifted return signals under shock/vibration with minimal latency. Use Value: Single 1.8-V supply simplifies power architecture in constrained SWaP environments; 85°C operating range supports extended field deployment. | Use Scenario: Reconfigurable radio platform requiring rapid switching between narrowband and wideband waveforms. IC Role / Device Role / Timing Role: Front-end digitizer enabling real-time spectrum sensing and adaptive modulation detection. Use Value: 450 MHz analog input bandwidth permits direct sampling up to L-band; JESD204B reduces FPGA pin count for scalable channel aggregation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad-channel, 12-bit, JESD204B ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADC34J25IRGZT | Higher sampling rate (160 MSPS), higher power (812–1010 mW), identical pinout and JESD204B interface. | Required for >125 MSPS IF sampling (e.g., 200 MHz instantaneous bandwidth); not drop-in due to increased thermal load. | Select when Nyquist bandwidth >62.5 MHz is mandatory; verify thermal margin with RθJA = 25.7°C/W and board layout. |
| ADC34J44IRGZT | 14-bit resolution, same 125 MSPS rate, higher SNR (71.5 dBFS), higher power (920–1120 mW), pin-compatible. | Used where ENOB >11.3 bits is critical (e.g., high-fidelity test equipment); trades power and cost for precision. | Choose for applications demanding >11.3 ENOB at 125 MSPS; validate FPGA JESD204B lane compatibility with 14-bit mapping. |
Compared with ADC34J25IRGZT and ADC34J44IRGZT, ADC34J24IRGZT delivers optimal balance of 125 MSPS sampling, 69.6 dBFS SNR, and 715–1010 mW power in space-constrained radar and base station designs where 12-bit resolution suffices and thermal headroom is limited.
Availability
ADC34J24IRGZT is available at Aetrix Electronics and suitable for radar beamforming, multi-carrier cellular infrastructure, and munitions guidance systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for ADC34J24IRGZT 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 company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and communications markets.
The ADC34J2x product line was designed for high-dynamic-range, ultra-low-power digitization in next-generation wireless infrastructure and defense electronics - emphasizing JESD204B integration, multi-channel synchronization, and thermal efficiency in compact VQFN packages.
FAQ
What is the maximum sampling rate supported by ADC34J24IRGZT?
The ADC34J24IRGZT supports a fixed maximum sampling rate of 125 MSPS, as specified in the device comparison table and electrical characteristics section of the SBAS669A datasheet. This rate is not user-configurable beyond the factory setting and defines its Nyquist bandwidth as 0–62.5 MHz. Attempting to operate above this rate may result in undefined behavior or data corruption.
Does ADC34J24IRGZT require external voltage references?
No, ADC34J24IRGZT uses an internal reference and does not require an external voltage reference. The device integrates a precision bandgap reference and associated circuitry to maintain gain accuracy (±1%FS channel gain error) and offset stability (±20 mV) across temperature. External reference pins are absent from the VQFN-48 pinout.
Can ADC34J24IRGZT be synchronized with other ADC34J2x devices?
Yes, ADC34J24IRGZT supports deterministic multi-chip synchronization via its SYSREFP/SYSREFM and SYNCP~/SYNCM~ pins. When driven with a common SYSREF signal aligned to the device clock, it achieves sub-sample latency matching across multiple ADC34J2x units - a requirement for coherent beamforming and MIMO systems.
What is the purpose of the VCM pin on ADC34J24IRGZT?
ADC34J24IRGZT's VCM pin outputs a stable 0.95-V common-mode voltage used to bias external differential drivers feeding the INxP/INxM inputs. It ensures correct input common-mode compliance (VCM ± 0.025 V) across all four channels and eliminates the need for external resistive dividers, simplifying analog front-end design.
Is ADC34J24IRGZT compatible with 3.3-V digital logic levels?
Yes, ADC34J24IRGZT's digital control pins (RESET, SCLK, SDATA, PDN, SEN) support both 1.8-V and 3.3-V logic levels, with VIH = 1.2 V min and VIL = 0.4 V max. However, the JESD204B serial outputs (DAP/DAM, etc.) are LVDS-compatible and require 1.8-V terminated loads - not 3.3-V interfaces.
ADC34J24IRGZT 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):
- 125M
- Number of Inputs:
- 4
- Input Type:
- Differential
- Data Interface:
- JESD204B
- Configuration:
- ADC
- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- 4
- Architecture:
- -
- 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:
- -
ADC34J24IRGZT FAQ
1.How can I place an order for ADC34J24IRGZT through Aetrix?
Please submit a Request for Quotation (RFQ) for ADC34J24IRGZT 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 ADC34J24IRGZT reliable?
The price and inventory of ADC34J24IRGZT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADC34J24IRGZT is usually 5 days.
3.What payment methods are accepted for ADC34J24IRGZT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADC34J24IRGZT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADC34J24IRGZT?
ADC34J24IRGZT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADC34J24IRGZT 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 ADC34J24IRGZT?
For technical support, including ADC34J24IRGZT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADC34J24IRGZT requirements.
6.How does Aetrix verify that ADC34J24IRGZT is sourced from the original manufacturer or authorized distributors?
All ADC34J24IRGZT 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 ADC34J24IRGZT meets industry standards.
7.What is the process for return or replacement of ADC34J24IRGZT?
All ADC34J24IRGZT units undergo pre-shipment inspection (PSI). If there is an issue with ADC34J24IRGZT, 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 ADC34J24IRGZT part is unused and in its original packaging.
Return procedure for ADC34J24IRGZT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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