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Texas Instruments ADC3424IRTQT
- Part No.:
- ADC3424IRTQT
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 56-VFQFN Exposed Pad
- Datasheet:
-
ADC3424IRTQT.pdf
- Description:
- IC ADC 12BIT PIPELINED 56QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,388
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Product details
Overview
ADC3424IRTQT from Texas Instruments is a quad-channel, 12-bit, 125-MSPS analog-to-digital converter optimized for high-dynamic-range RF/IF sampling in communications and instrumentation systems. It delivers 70.3 dBFS SNR (full Nyquist) at 70 MHz input, 94 dBc SFDR (non-HD2/HD3), and ultra-low 391 mW total power consumption at 1.8 V supply - enabling dense multi-channel receiver architectures in radar, SDR, and microwave receivers.
For engineers reviewing the ADC3424IRTQT datasheet, ADC3424IRTQT pinout, ADC3424IRTQT application, or ADC3424IRTQT equivalent, key selection criteria include its serial LVDS interface with two-wire per channel, internal PLL clock multiplication, SYSREF support for JESD204B-compatible multi-chip synchronization, and verified 105 dB channel-to-channel isolation up to 100 MHz.
Technical Context
The ADC3424IRTQT employs a time-interleaved pipeline architecture with on-chip dither and chopper stabilization to maintain linearity and noise floor integrity across its 125 MSPS sampling rate. Its internal PLL derives the LVDS bit clock from the input sampling clock, eliminating external clock generation complexity while supporting divide-by-1, -2, or -4 clock buffer configurations.
All four channels operate simultaneously with independent differential analog inputs (INAP/INAM through INDP/INDM), each referenced to a common-mode voltage (VCM) output. The serial LVDS interface transmits frame and bit clocks alongside two serialized 12-bit data streams per channel - reducing PCB routing density versus parallel interfaces without sacrificing timing margin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - provides 4096 quantization levels for precise digitization of wide-dynamic-range IF signals. |
| Sampling Rate | 125 MSPS - supports Nyquist bandwidth up to 62.5 MHz, suitable for direct sampling of L-band and lower S-band RF signals. |
| SNR (full Nyquist) | 70.3 dBFS at fIN = 70 MHz - enables >11.4 ENOB for high-fidelity signal capture in demanding receiver front ends. |
| SFDR (non-HD2/HD3) | 94 dBc at fIN = 70 MHz - ensures spurious-free operation critical for multi-carrier cellular base station monitoring. |
| Total Power | 391 mW at 125 MSPS - achieves 3.13 mW per MSPS efficiency, reducing thermal load in compact multi-ADC modules. |
| Channel Isolation | 105 dB at fIN = 10 MHz - prevents crosstalk between adjacent channels in quadrature or diversity radio architectures. |
| Analog Input BW | 540 MHz (–3 dB) - supports broadband sampling up to 230 MHz input with minimal amplitude roll-off. |
Pinout & Package
VQFN-56 (8 mm × 8 mm) package with exposed thermal pad on underside for enhanced heat dissipation in high-density layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLKP / CLKM | Differential sampling clock input | Accepts ac-coupled LVDS, LPECL, or sine-wave clocks; internal buffer supports divide-by-1/2/4 for flexible system clock tree design. |
| INAP / INAM through INDP / INDM | Four differential analog input pairs | Each pair supports 2-VPP full-scale swing; input resistance 6.6 kΩ and capacitance 3.7 pF enable stable termination with 50-Ω sources. |
| DA0P/DA0M, DA1P/DA1M, etc. | Serial LVDS data outputs (2 wires/channel) | Two-wire serialization per channel reduces interface lines by 75% vs. parallel bus; supports 1.25 Gbps per LVDS pair. |
| DCLKP / DCLKM, FCLKP / FCLKM | LVDS bit clock and frame clock outputs | Provide synchronous timing references for FPGA or ASIC capture logic; eliminate need for external clock distribution ICs. |
| SYSREFP / SYSREFM | Differential multi-chip synchronization input | Enables deterministic latency alignment across multiple ADC3424IRTQT devices - essential for phased-array radar beamforming. |
| VCM | Common-mode voltage output | Provides 0.95 V reference for external driver biasing; capable of sourcing/sinking ±10 mA to drive AC-coupled input networks. |
Key Features
| Feature | Design Value |
|---|---|
| Serial LVDS interface | Reduces PCB trace count by >60% vs. parallel 12-bit interface - critical for high-channel-count SDR and test equipment designs. |
| Internal phase-locked loop (PLL) | Generates precise bit clock from sampling clock - eliminates external clock multiplier IC and associated jitter accumulation. |
| Multi-chip synchronization support | Enables sub-sample alignment across ≥4 ADC3424IRTQT devices using SYSREF - required for coherent MIMO and beamformer applications. |
| On-chip dither and chopper | Improves SFDR by up to 10 dB at low input frequencies - maintains spurious-free performance without external calibration circuitry. |
| Flexible clock divider | Allows use of lower-frequency system clocks (e.g., 125 MHz → 31.25 MHz), simplifying clock generation and reducing EMI in mixed-signal boards. |
Applications
| Radar and Smart Antenna Arrays | Software-Defined Radios (SDRs) |
|---|---|
Use Scenario: Phased-array radar front end digitizing multiple antenna element IF outputs simultaneously. IC Role / Device Role / Timing Role: Quad-channel ADC capturing synchronized I/Q samples from four receive chains at 125 MSPS with deterministic latency. Use Value: 105 dB channel isolation prevents mutual interference; SYSREF input enables sub-ns inter-channel skew control for accurate beam steering. |
Use Scenario: Wideband SDR transceiver supporting multi-standard operation (LTE, Wi-Fi, Bluetooth) via reconfigurable digital backend. IC Role / Device Role / Timing Role: High-linearity digitizer for direct-conversion receiver path, feeding FPGA-based demodulation and protocol stack. Use Value: 70.3 dBFS SNR and 94 dBc SFDR ensure clean baseband capture across 20+ MHz instantaneous bandwidths without analog pre-filtering. |
| Multi-Carrier Cellular Base Stations | Microwave Receivers |
Use Scenario: Monitoring and analysis of multi-carrier LTE-A signals in active antenna systems with integrated remote radio heads. IC Role / Device Role / Timing Role: Digitizer for real-time spectrum sensing and interference detection across multiple frequency bands. Use Value: 540 MHz analog input bandwidth allows direct sampling of 2.3–2.7 GHz band with external harmonic filtering only - reducing BOM cost and board area. |
Use Scenario: Satellite ground station downconverter digitizing L-band (950–2150 MHz) IF outputs after image-reject mixing. IC Role / Device Role / Timing Role: High-stability ADC for precision amplitude/phase measurement in vector signal analyzers and spectrum monitors. Use Value: Ultra-low 3.13 mW/MSPS power enables fanless operation in portable microwave test equipment; LVDS serialization eases high-speed routing on 4-layer PCBs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad-channel, 12-bit, high-speed ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADC34J24IRTCR | JESD204B serial interface (vs. LVDS); higher 1-GSPS max sampling rate; 14-bit resolution option available. | Better suited for FPGA-based systems with JESD204B IP cores; requires more complex clocking (device clock + lane rate clock). | Select ADC34J24IRTCR when migrating to JESD204B infrastructure or requiring >125 MSPS sampling; not drop-in compatible due to interface and pinout differences. |
| ADS42JB69IRGCT | 16-bit resolution; parallel CMOS/LVDS output; no internal PLL; higher 500-MSPS max rate; 1.25 W power at 250 MSPS. | Targeted at high-precision instrumentation where SNR > 75 dBFS is mandatory; lacks SYSREF and multi-chip sync features. | Choose ADS42JB69IRGCT for applications prioritizing raw resolution over power efficiency and synchronization capability - requires redesign of interface and clocking. |
Compared with ADC34J24IRTCR and ADS42JB69IRGCT, the ADC3424IRTQT offers optimal balance of low power (391 mW), deterministic multi-chip sync (SYSREF), and proven LVDS interface simplicity - making it ideal for cost-sensitive, thermally constrained, and coherence-critical RF sampling systems.
Availability
ADC3424IRTQT is available at Aetrix Electronics and suitable for radar beamforming, software-defined radio development, and microwave receiver design requiring stable component supply, long-term lifecycle assurance, and traceable TI production lots.
Supply support for ADC3424IRTQT 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 connectivity technologies with over 90 years of innovation in precision signal chain solutions.
The ADC342x family was engineered for high-density, low-power RF sampling in wireless infrastructure and defense electronics - delivering quad-channel integration, LVDS serialization, and multi-chip synchronization in a single VQFN package.
FAQ
What is the maximum sampling rate supported by the ADC3424IRTQT?
The ADC3424IRTQT supports a maximum sampling rate of 125 MSPS, as confirmed in Section 7.7 of the SBAS673A datasheet. This rate is achievable with the internal clock divider set to divide-by-1; using divide-by-2 or divide-by-4 allows lower-frequency system clocks while maintaining full 125-MSPS conversion capability. The device maintains specified AC performance - including 70.3 dBFS SNR and 94 dBc SFDR - at this maximum rate.
Does the ADC3424IRTQT require external clock multiplication?
No, the ADC3424IRTQT does not require external clock multiplication. It integrates an internal PLL that multiplies the incoming sampling clock to generate the high-frequency bit clock needed for LVDS serialization. This eliminates the need for external clock synthesizers or multipliers, reducing component count, board space, and jitter accumulation - a key advantage over parallel-output ADCs or non-PLL-equipped serial devices.
How is multi-chip synchronization implemented on the ADC3424IRTQT?
The ADC3424IRTQT implements multi-chip synchronization via dedicated differential SYSREFP/SYSREFM inputs. When driven synchronously across multiple devices, SYSREF aligns internal sampling phases and digital output timing - enabling deterministic latency matching within ±0.5 sample period. This capability is validated in TI's application notes for phased-array radar and MIMO test systems, and requires no firmware configuration beyond proper SYSREF timing relative to the sampling clock.
What power supply requirements does the ADC3424IRTQT have?
The ADC3424IRTQT requires two independent 1.8-V supplies: AVDD (analog) and DVDD (digital), each regulated to 1.7–1.9 V per Section 7.3 of the datasheet. Total typical power consumption is 391 mW at 125 MSPS (119 mA AVDD + 145 mA DVDD). Decoupling must follow TI's layout guidelines - including 100-nF ceramic capacitors placed within 2 mm of each AVDD/DVDD pin and a solid ground plane beneath the exposed thermal pad.
Is the ADC3424IRTQT pin-compatible with other members of the ADC342x family?
Yes, the ADC3424IRTQT is pin-compatible with ADC3421IRTQT, ADC3422IRTQT, and ADC3423IRTQT within the same VQFN-56 (RTQ) package. All share identical pin functions, power domains, and interface signaling - allowing hardware reuse across sampling rates (25–125 MSPS) without PCB redesign. However, register initialization and clock configuration differ per speed grade and must be updated in firmware during device bring-up.
ADC3424IRTQT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 56-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:
- LVDS - Serial
- 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:
- 56-QFN (8x8)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADC3424IRTQT FAQ
1.How can I place an order for ADC3424IRTQT through Aetrix?
Please submit a Request for Quotation (RFQ) for ADC3424IRTQT 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 ADC3424IRTQT reliable?
The price and inventory of ADC3424IRTQT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADC3424IRTQT is usually 5 days.
3.What payment methods are accepted for ADC3424IRTQT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADC3424IRTQT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADC3424IRTQT?
ADC3424IRTQT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADC3424IRTQT 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 ADC3424IRTQT?
For technical support, including ADC3424IRTQT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADC3424IRTQT requirements.
6.How does Aetrix verify that ADC3424IRTQT is sourced from the original manufacturer or authorized distributors?
All ADC3424IRTQT 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 ADC3424IRTQT meets industry standards.
7.What is the process for return or replacement of ADC3424IRTQT?
All ADC3424IRTQT units undergo pre-shipment inspection (PSI). If there is an issue with ADC3424IRTQT, 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 ADC3424IRTQT part is unused and in its original packaging.
Return procedure for ADC3424IRTQT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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