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Texas Instruments ADC34J43IRGZT
- Part No.:
- ADC34J43IRGZT
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
ADC34J43IRGZT.pdf
- Description:
- IC ADC 14BIT PIPELINED 48VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,650
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Product details
Overview
ADC34J43IRGZT from Texas Instruments is a quad-channel, 14-bit, 80-MSPS analog-to-digital converter with JESD204B subclass 1 interface, 72.4 dBFS SNR at 70 MHz input, 105 dB channel isolation, and ultra-low power consumption of 584 mW total. It operates from a single 1.8-V supply and targets high-dynamic-range RF sampling in multi-carrier base stations and radar receivers.
For engineers reviewing the ADC34J43IRGZT datasheet, ADC34J43IRGZT pinout, ADC34J43IRGZT application, or ADC34J43IRGZT equivalent, this page delivers verified specifications, validated pin functions, real-world use cases in SDR and smart antenna systems, and two confirmed alternative parts for design flexibility.
Technical Context
The ADC34J43IRGZT integrates four independent 14-bit ADC cores sharing a common clock and SYSREF path, enabling precise multi-chip synchronization for phased-array timing. Its internal PLL multiplies the input sampling clock by 20 to generate the JESD204B bit clock, supporting up to 3.2 Gbps per lane with one lane per channel.
It features configurable dithering (enabled/disabled per channel), programmable special modes for HD2/HD3 optimization at specific input frequencies, and flexible clock input buffering with divide-by-1, -2, or -4 options-allowing direct interface with 80-MSPS sampling clocks or higher-frequency system clocks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit - delivers 84 dB theoretical SNR ceiling and supports >10-bit ENOB across 10–230 MHz input band |
| Sampling Rate | 80 MSPS - fixed maximum rate for ADC34J43; enables Nyquist zone up to 40 MHz without undersampling |
| SNR @ 70 MHz | 72.4 dBFS - measured with dither enabled; ensures ≥11.7 ENOB for high-fidelity IF digitization |
| Channel Isolation | 105 dB - prevents crosstalk between adjacent channels up to 100 MHz, critical for diversity receiver co-location |
| Total Power | 584 mW - includes 269 mA analog + 56 mA digital supply current at 1.8 V; enables thermal management in dense RF modules |
| JESD204B Support | Subclass 1, 1 lane per ADC - reduces PCB routing to 8 differential pairs (vs. 56 LVDS lines), simplifying high-speed layout |
| Input Bandwidth | 450 MHz - supports direct RF sampling of L-band signals without external downconversion |
Pinout & Package
VQFN-48 (7 mm × 7 mm) package with exposed thermal pad on underside; RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLKP / CLKM | Differential sampling clock input | Accepts ac-coupled LVDS (0.7 Vpp) or sine wave (0.2–1.5 Vpp); defines 80-MSPS conversion timing |
| INAP / INAM, INBP / INBM, INCP / INCM, INDP / INDM | Four differential analog input pairs | Each pair supports 2.0 Vpp full-scale; high-impedance (6.5 kΩ) and low-capacitance (5.2 pF) inputs minimize filter loading |
| DAP / DAM, DBP / DBM, DCP / DCM, DDP / DDM | Four JESD204B serial data outputs | One dedicated lane per channel; CML-compatible, 3.2 Gbps max, eliminates parallel bus routing complexity |
| SYSREFP / SYSREFM | Differential system reference input | Enables deterministic latency alignment across multiple ADC34J43IRGZT devices in time-synchronized arrays |
| OVRA–OVRD | Per-channel overrange indicators | Open-drain outputs flag saturation in real time-used for AGC loop feedback or signal health monitoring |
Key Features
| Feature | Design Value |
|---|---|
| Internal dither per channel | Configurable via register bits (01h[7:0]); improves SFDR by up to 3 dBc at high input frequencies by randomizing quantization noise |
| Programmable harmonic suppression | Special Mode 1 (06h–09h) and Mode 2 (122h–222h) registers allow HD2/HD3 reduction at 70–230 MHz bands without external calibration |
| Multi-chip synchronization support | Hardware SYSREF capture and lane alignment logic ensure sub-sample timing consistency across up to 8 devices in a JESD204B system |
| Flexible clock divider | Divide-by-1, -2, or -4 on CLKP/CLKM input allows use of 80, 160, or 320 MHz system clocks-reducing jitter-sensitive clock tree design effort |
| Low-power standby mode | 166 mW dissipation with 35 µs wake-up time-enables rapid duty-cycled operation in battery-powered test equipment |
Applications
| Multi-Carrier Base Station Receiver | Radar Beamforming Front-End |
|---|---|
Use Scenario: Digitizing four simultaneous IF signals (e.g., 70–140 MHz) from separate antenna elements in a 4T4R LTE-A remote radio head. IC Role / Device Role / Timing Role: Quad-channel ADC providing synchronized sampling with deterministic latency for digital beamforming and MIMO processing. Use Value: 105 dB channel isolation prevents inter-element interference; JESD204B reduces FPGA I/O count by >75% versus LVDS. |
Use Scenario: Capturing phase-coherent echoes from four quadrature-mixed radar channels in an X-band active electronically scanned array (AESA). IC Role / Device Role / Timing Role: High-linearity ADC enabling precise amplitude/phase measurement across all channels for real-time beam steering. Use Value: 72.4 dBFS SNR at 70 MHz ensures <0.5° phase error; internal dither suppresses spurs that degrade Doppler resolution. |
| Software Defined Radio (SDR) Transceiver | Communications Test Equipment |
Use Scenario: Wideband IF sampling in a field-programmable SDR platform supporting 5G NR, Wi-Fi 6E, and legacy standards simultaneously. IC Role / Device Role / Timing Role: Front-end digitizer with programmable input bandwidth (450 MHz) and JESD204B link for FPGA-based real-time demodulation. Use Value: Single 1.8-V supply simplifies power architecture; pin-to-pin compatibility with ADC34J23 allows 12-bit fallback for cost-sensitive variants. |
Use Scenario: Signal analysis in vector network analyzers requiring four-phase coherent acquisition for S-parameter matrix measurement. IC Role / Device Role / Timing Role: Time-aligned quad ADC capturing stimulus-response pairs with sub-nanosecond skew control via SYSREF. Use Value: 80 MSPS sampling supports 40 MHz instantaneous bandwidth; low THD (–86 dBc) preserves measurement fidelity for EVM-critical tests. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad-channel, 14-bit ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADC34J44IRGZT | Higher 125-MSPS sampling rate; 72.5 dBFS SNR at 70 MHz; 812 mW total power | Better suited for wider instantaneous bandwidth (up to 62.5 MHz Nyquist) in microwave receivers | Select when system requires >80 MSPS while retaining same pinout, JESD204B interface, and thermal footprint |
| ADS4149IRGZT | Quad 14-bit, 250-MSPS; LVDS output (not JESD204B); 1.8-V/3.3-V dual-supply; 1.3 W total power | Supports higher sampling but lacks multi-chip sync and increases FPGA I/O count significantly | Choose only if JESD204B is unnecessary and board layout can accommodate 112 LVDS lines plus higher thermal load |
Compared with ADC34J43IRGZT, ADC34J44IRGZT offers higher speed with identical interface and package-ideal for bandwidth upgrades-while ADS4149IRGZT trades JESD204B simplicity for raw speed and requires major PCB redesign.
Availability
ADC34J43IRGZT is available at Aetrix Electronics and suitable for multi-carrier base stations, radar beamformers, SDR transceivers, and communications test equipment requiring stable component supply across extended production lifecycles.
Supply support for ADC34J43IRGZT 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 infrastructure.
The ADC34J4x family was designed specifically for demanding RF-sampling applications requiring high linearity, ultra-low power, and deterministic multi-device synchronization-targeting next-generation wireless infrastructure and defense electronics.
FAQ
What is the maximum sampling rate supported by ADC34J43IRGZT?
The ADC34J43IRGZT supports a maximum sampling rate of 80 MSPS, as specified in its electrical characteristics table. This rate is fixed for the ADC34J43 variant and cannot be increased via clock divider settings-the device is factory-configured for 80 MSPS operation. Exceeding this rate may cause data corruption or out-of-spec AC performance.
Does ADC34J43IRGZT require external voltage references?
No, ADC34J43IRGZT uses an internal reference and does not require an external voltage reference. The device integrates a precision bandgap reference, and gain error due to reference inaccuracy is specified at ±3%FS. External reference pins are not present on the VQFN-48 package.
Can ADC34J43IRGZT operate with a 3.3-V digital interface?
Yes, ADC34J43IRGZT digital control inputs (RESET, SCLK, SEN, SDATA, PDN) support both 1.8-V and 3.3-V logic levels, with VIH = 1.2 V min and VIL = 0.4 V max. However, DVDD must remain at 1.8 V; the I/O tolerance is achieved via internal level-shifting circuitry, not supply voltage scaling.
How is multi-device synchronization implemented in ADC34J43IRGZT?
ADC34J43IRGZT implements multi-device synchronization using the differential SYSREFP/SYSREFM inputs and JESD204B subclass 1 protocol. Upon receiving a common SYSREF edge, each device captures internal timing states and aligns lane delays-ensuring deterministic latency across up to eight synchronized ADCs in a system.
What thermal management considerations apply to ADC34J43IRGZT?
ADC34J43IRGZT has a junction-to-board thermal resistance (RθJB) of 3.0°C/W and requires a properly sized PCB thermal pad connected to internal ground planes. With 584 mW total power dissipation, maintaining ≤85°C ambient and ≥2 oz copper on inner layers keeps junction temperature below 125°C-verified per its thermal metrics table.
ADC34J43IRGZT 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:
- 14
- Sampling Rate (Per Second):
- 80M
- Number of Inputs:
- 4
- Input Type:
- Differential
- Data Interface:
- JESD204B
- Configuration:
- ADC
- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- 4
- 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:
- -
ADC34J43IRGZT FAQ
1.How can I place an order for ADC34J43IRGZT through Aetrix?
Please submit a Request for Quotation (RFQ) for ADC34J43IRGZT 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 ADC34J43IRGZT reliable?
The price and inventory of ADC34J43IRGZT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADC34J43IRGZT is usually 5 days.
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We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADC34J43IRGZT transactions.
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ADC34J43IRGZT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADC34J43IRGZT 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 ADC34J43IRGZT?
For technical support, including ADC34J43IRGZT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADC34J43IRGZT requirements.
6.How does Aetrix verify that ADC34J43IRGZT is sourced from the original manufacturer or authorized distributors?
All ADC34J43IRGZT 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 ADC34J43IRGZT meets industry standards.
7.What is the process for return or replacement of ADC34J43IRGZT?
All ADC34J43IRGZT units undergo pre-shipment inspection (PSI). If there is an issue with ADC34J43IRGZT, 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 ADC34J43IRGZT part is unused and in its original packaging.
Return procedure for ADC34J43IRGZT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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