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Texas Instruments ADC3242IRGZR
- Part No.:
- ADC3242IRGZR
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
ADC3242IRGZR.pdf
- Description:
- IC ADC 14BIT PIPELINED 48VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,390
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Product details
Overview
ADC3242IRGZR from Texas Instruments is a dual-channel, 14-bit, 50-MSPS analog-to-digital converter with serial LVDS interface, 1.8-V single supply operation, and 105-dB channel isolation-designed for high-dynamic-range RF sampling in radar and multi-carrier base station receivers.
For engineers reviewing the ADC3242IRGZR datasheet, ADC3242IRGZR pinout, ADC3242IRGZR application, or ADC3242IRGZR equivalent, key selection criteria include SNR = 73.3 dBFS at fIN = 10 MHz (fS = 50 MSPS), ultra-low power (116 mW/ch), flexible clock division (÷1/÷2/÷4), and multi-chip synchronization support via SYSREF.
Technical Context
The ADC3242IRGZR employs a pipelined architecture with internal dither and chopper to enhance AC performance and reduce harmonic distortion. Its serial LVDS output uses two-wire serialization per channel, with an integrated PLL generating bit clock (DCLK) and frame clock (FCLK) from the input sampling clock.
It supports differential analog inputs up to 540 MHz bandwidth, accepts LVDS/PECL/LVCMOS clock inputs, and features hardware reset (RESET), power-down control (PDN), and SPI-configurable registers for gain/offset calibration and timing alignment-enabling precise system-level synchronization in phased-array and SDR applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit - delivers 11.9 ENOB at 10 MHz input, enabling high-fidelity digitization of wideband RF signals |
| Sampling Rate | 50 MSPS - optimized for mid-band cellular and radar IF sampling with full Nyquist bandwidth coverage |
| SNR @ fIN = 10 MHz | 73.3 dBFS - ensures >70 dB effective dynamic range for detecting weak signals amid noise floor |
| SFDR @ fIN = 70 MHz | 93 dBc - suppresses spurious content critical for adjacent-channel interference rejection in dense spectrum environments |
| Power Consumption | 116 mW per channel - enables thermally constrained designs in compact radar modules and portable instrumentation |
| Channel Isolation | 105 dB - prevents crosstalk between simultaneous A/B channel acquisitions in diversity or I/Q receiver architectures |
| Analog Input Bandwidth | 540 MHz - supports direct RF sampling up to L-band without external anti-alias filtering |
Pinout & Package
VQFN-48 (7 mm × 7 mm) package with exposed thermal pad on underside for enhanced heat dissipation in high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| INAP / INAM | Differential analog input, Channel A | Accepts 2-VPP full-scale differential signal; 6.6-kΩ input resistance and 3.7-pF capacitance define anti-alias filter design |
| INBP / INBM | Differential analog input, Channel B | Independent path with 105-dB isolation from Channel A-enables true simultaneous sampling for beamforming |
| CLKP / CLKM | Differential sampling clock input | Supports LVDS/LVPECL; internal divider allows ÷1/÷2/÷4 for flexible clock tree design and JESD204B compatibility |
| DA0P / DA0M, DA1P / DA1M | LVDS serialized data outputs, Channel A | Two-wire serial stream per channel reduces interface lines by >50% vs parallel bus-critical for high-channel-count systems |
| DB0P / DB0M, DB1P / DB1M | LVDS serialized data outputs, Channel B | Independent serialization avoids inter-channel skew; DCLKP/DCLKM and FCLKP/FCLKM provide embedded timing recovery |
| SYSREFP / SYSREFM | Differential system reference input | Enables deterministic latency and sub-cycle alignment across multiple ADC3242IRGZR devices in synchronized arrays |
| RESET | Hardware reset (active-high) | Internal 150-kΩ pull-down ensures known state at power-up; required for initial register initialization before SPI configuration |
Key Features
| Feature | Design Value |
|---|---|
| Serial LVDS interface | Reduces PCB routing complexity by replacing 28+ parallel data lines with four differential pairs per channel-improving signal integrity and layout density |
| Multi-chip synchronization | Uses SYSREF and internal delay calibration to achieve <100-ps inter-device sampling skew-essential for coherent MIMO and phased-array radar |
| Flexible clock division | On-chip ÷1/÷2/÷4 clock divider eliminates need for external clock synthesizers when deriving sampling clocks from system master oscillators |
| Internal dither and chopper | Reduces harmonic distortion (HD2/HD3) by up to 10 dB and stabilizes DC offset drift-improving measurement repeatability in precision test equipment |
| Pin-to-pin compatibility | Shares footprint and pin mapping with 12-bit ADC322x family-enables resolution upgrade without board redesign or firmware changes |
Applications
| Radar and Smart Antenna Arrays | Multi-Carrier Cellular Base Stations |
|---|---|
|
Use Scenario: Digitizing I/Q downconverted signals from phased-array radar front-ends operating at L- and S-bands. IC Role / Device Role / Timing Role: Dual-channel synchronous sampling ADC providing time-aligned 14-bit data streams for real-time beamforming and Doppler processing. Use Value: 105-dB channel isolation and <100-ps multi-chip sync enable accurate angle-of-arrival estimation and clutter suppression. |
Use Scenario: Capturing multiple carrier bands simultaneously in macrocell and small-cell LTE/5G base station remote radio units (RRUs). IC Role / Device Role / Timing Role: High-linearity ADC handling wide instantaneous bandwidths (up to 540 MHz) for digital predistortion (DPD) feedback loops. Use Value: 93-dBc SFDR at 70 MHz and 73.3-dBFS SNR ensure clean capture of adjacent carriers for adaptive DPD model training. |
| Software-Defined Radios (SDRs) | Communications Test Equipment |
|
Use Scenario: Front-end digitization in field-programmable SDR platforms requiring reconfigurable bandwidth and resolution. IC Role / Device Role / Timing Role: Configurable sampling rate (25–125 MSPS) and SPI-controlled registers allow runtime adaptation to different waveforms and standards. Use Value: On-chip dither and chopper maintain ENOB >11.3 bits across temperature, reducing calibration overhead in portable SDRs. |
Use Scenario: Signal acquisition in vector network analyzers and spectrum analyzers requiring low-noise, high-dynamic-range digitization. IC Role / Device Role / Timing Role: Ultra-low 116-mW/ch power and 73.3-dBFS SNR enable battery-operated handheld instruments with >2-hour runtime. Use Value: 540-MHz analog input bandwidth supports direct sampling up to 2nd Nyquist zone-eliminating image-reject filters in compact benchtop units. |
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 |
|---|---|---|---|
| ADC3244IRGZR | Higher max sampling rate (125 MSPS) and higher power (245 mW total); same pinout and feature set | Better suited for wideband SDR and microwave receiver applications requiring >80-MSPS instantaneous bandwidth | Select ADC3244IRGZR when Nyquist bandwidth exceeds 40 MHz and system power budget permits +30% increase |
| ADC32J42IRGZT | JESD204B interface (not LVDS); 12-bit resolution; 500-MSPS max; different pinout and power sequencing | Targets high-speed backhaul and mmWave test systems needing deterministic latency and FPGA-friendly serial interface | Choose ADC32J42IRGZT only if JESD204B protocol integration and FPGA SerDes resources are available |
Compared with ADC3242IRGZR, ADC3244IRGZR offers higher speed at increased power, while ADC32J42IRGZT trades resolution and interface simplicity for JESD204B scalability-making ADC3242IRGZR optimal for cost-sensitive, thermally constrained 50-MSPS RF sampling where LVDS interoperability is preferred.
Availability
ADC3242IRGZR is available at Aetrix Electronics and suitable for radar front-ends, multi-carrier base stations, and communications test equipment requiring stable component supply, long-term obsolescence management, and traceable sourcing.
Supply support for ADC3242IRGZR 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 over 90 years of innovation in precision data conversion and signal chain solutions.
The ADC324x family was designed for high-performance RF sampling in demanding wireless infrastructure and defense applications-emphasizing linearity, low power, and system-level synchronization capability.
FAQ
What is the maximum sampling rate supported by ADC3242IRGZR?
The ADC3242IRGZR supports a maximum sampling rate of 50 MSPS, as confirmed in the device comparison table and electrical characteristics section of the SBAS671C datasheet. This rate is fixed for the ADC3242 variant-unlike the ADC3244IRGZR which supports up to 125 MSPS. Operation above 50 MSPS is not specified or guaranteed for ADC3242IRGZR.
Does ADC3242IRGZR support JESD204B interface?
No, ADC3242IRGZR does not support JESD204B. It implements a proprietary serial LVDS (SLVDS) interface with two-wire serialization per channel. JESD204B is available only on the ADC32Jxx series (e.g., ADC32J42IRGZT), which has different pinout, power requirements, and register structure-not compatible with ADC3242IRGZR.
What is the analog input voltage range for ADC3242IRGZR?
The ADC3242IRGZR accepts a differential analog input voltage range of 2 VPP full-scale, with common-mode voltage centered at VCM ≈ 0.95 V. The input pins (INAP/INAM/INBP/INBM) tolerate differential amplitudes up to 2 VPP and common-mode voltages from VCM ± 0.025 V under recommended operating conditions.
How is multi-device synchronization achieved with ADC3242IRGZR?
ADC3242IRGZR achieves deterministic multi-device synchronization using the differential SYSREFP/SYSREFM input, combined with internal delay calibration registers. When driven by a common SYSREF edge aligned to the sampling clock, multiple ADC3242IRGZR devices can achieve sub-cycle (<100 ps) sampling skew-verified in the device functional modes and timing sections of SBAS671C.
Is ADC3242IRGZR pin-compatible with the 12-bit ADC3222IRGZR?
Yes, ADC3242IRGZR is explicitly stated as pin-to-pin compatible with the 12-bit ADC3222IRGZR in the Features section of SBAS671C. Both use the RGZ (VQFN-48) package with identical pin functions and mechanical footprint-allowing resolution upgrades without PCB revision or connector changes.
ADC3242IRGZR 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):
- 50M
- Number of Inputs:
- 2
- Input Type:
- Differential
- Data Interface:
- LVDS - Serial
- Configuration:
- ADC
- Ratio - S/H:ADC:
- 0:1
- 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:
- -
ADC3242IRGZR FAQ
1.How can I place an order for ADC3242IRGZR through Aetrix?
Please submit a Request for Quotation (RFQ) for ADC3242IRGZR 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 ADC3242IRGZR reliable?
The price and inventory of ADC3242IRGZR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADC3242IRGZR is usually 5 days.
3.What payment methods are accepted for ADC3242IRGZR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADC3242IRGZR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADC3242IRGZR?
ADC3242IRGZR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADC3242IRGZR 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 ADC3242IRGZR?
For technical support, including ADC3242IRGZR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADC3242IRGZR requirements.
6.How does Aetrix verify that ADC3242IRGZR is sourced from the original manufacturer or authorized distributors?
All ADC3242IRGZR 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 ADC3242IRGZR meets industry standards.
7.What is the process for return or replacement of ADC3242IRGZR?
All ADC3242IRGZR units undergo pre-shipment inspection (PSI). If there is an issue with ADC3242IRGZR, 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 ADC3242IRGZR part is unused and in its original packaging.
Return procedure for ADC3242IRGZR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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