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Texas Instruments ADS5482IRGCT
- Part No.:
- ADS5482IRGCT
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 64-VFQFN Exposed Pad
- Datasheet:
-
ADS5482IRGCT.pdf
- Description:
- IC ADC 16BIT PIPELINED 64VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:260
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Product details
Overview
ADS5482IRGCT from Texas Instruments is a 16-bit, 105-MSPS analog-to-digital converter with 78.6 dBFS SNR at 70 MHz input and 95 dBc SFDR at 70 MHz/135 MSPS (family-spec), internal high-impedance analog buffer, DDR LVDS-compatible outputs, and dual-supply operation (5 V AVDD5 + 3.3 V AVDD3/DVDD3). It targets high-dynamic-range signal acquisition in wireless infrastructure baseband receivers.
For engineers reviewing the ADS5482IRGCT datasheet, ADS5482IRGCT pinout, ADS5482IRGCT application, or ADS5482IRGCT equivalent, key selection criteria include its 105-MSPS real-time sampling rate, 16-bit resolution with <±0.5 LSB DNL, QFN-64 PowerPAD™ package thermal performance, and dither-enabled spurious suppression for multi-carrier RF digitization.
Technical Context
The ADS5482IRGCT employs a track-and-hold architecture with integrated high-impedance analog input buffer to isolate source impedance variations and minimize clock feedthrough. Its internal reference generator provides 1.2 V nominal VREF and 3.1 V VCM output, enabling single-supply system simplification without external reference circuitry.
It delivers DDR LVDS digital outputs with programmable 247–454 mV differential swing and 1.125–1.375 V common-mode voltage, supporting deterministic 5-cycle latency and sub-1 ps aperture jitter (80 fs rms) for coherent multi-channel synchronization in software-defined radio and radar front ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16 bits - guarantees full-scale quantization step of ≈15.3 μV for 3-VPP differential input range |
| Max Sample Rate | 105 MSPS - supports Nyquist bandwidth up to 52.5 MHz with real-time baseband I/Q capture |
| SNR @ 70 MHz | 78.6 dBFS - enables >12.8 ENOB for high-fidelity wideband signal reconstruction |
| SFDR @ 70 MHz | 95 dBc - suppresses worst spur by 95 dB below full-scale fundamental, critical for LTE adjacent-channel rejection |
| Total Power | 2.2 W - split across AVDD5 (330 mA), AVDD3 (150 mA), DVDD3 (65 mA) for thermal-aware PCB layout |
| Input Bandwidth | 125 MHz (–3 dB) - accommodates IF sampling up to 70 MHz with <0.1 dB flatness loss |
| Latency | 5 clock cycles - enables precise timing alignment in closed-loop linearization systems |
Pinout & Package
The ADS5482IRGCT is housed in a thermally enhanced QFN-64 PowerPAD™ package (9 mm × 9 mm footprint) with exposed thermal pad (Pin 65 = AGND) for low-junction-temperature operation under continuous 2.2 W dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| INP / INM (11, 12) | Differential analog input | High-impedance buffered inputs accepting 3-VPP differential signal; self-biased to 3.1 V common mode |
| CLKP / CLKM (21, 22) | Differential sampling clock | Accepts 1.5–5 VPP sine wave; 45–55% duty cycle required; defines 105-MSPS conversion timing |
| DRY_P / DRY_M (53, 54) | Data-ready strobe | LVDS clock-out synchronized to DDR data edges; used for timing capture in FPGA logic |
| D0_1_P / D0_1_M (43, 44) | LSB DDR LVDS data pair | Transmits bit 0 (even) then bit 1 (odd) per clock edge; 100 Ω differential load required |
| VCM (16) | Analog common-mode output | Provides 3.1 V reference for external driver biasing or ADC input termination networks |
| PDWNF / PDWNS (34, 35) | Power-down control | PDWNF = H enables light sleep (600 μs wakeup, 680 mW); PDWNS = H enables deep sleep (6 ms wakeup, 70 mW) |
Key Features
| Feature | Design Value |
|---|---|
| Internal analog buffer | Isolates switching transients from signal source, enabling direct connection to high-Z mixers or filters without external op-amp buffering |
| Programmable dither | Reduces harmonic distortion and improves SFDR by randomizing quantization noise floor, especially effective at low input amplitudes |
| DDR LVDS outputs | Deliver 16-bit data at half the clock frequency (52.5 MHz for 105-MSPS), reducing FPGA interface speed requirements and EMI |
| On-chip reference generator | Eliminates need for external precision reference ICs; VREF = 1.2 V ±1%, VCM = 3.1 V ±0.15 V over temperature |
| QFN-64 PowerPAD™ | Thermal resistance RθJA = 20°C/W (no airflow); supports sustained 2.2 W operation with standard 49-via thermal pad layout |
Applications
| Wireless Base Station Receiver | Test & Measurement Digitizer |
|---|---|
Use Scenario: Multi-carrier GSM/WCDMA/LTE baseband digitization in macrocell BTS with 20–40 MHz instantaneous bandwidth. IC Role / Device Role / Timing Role: Primary ADC capturing I/Q downconverted signals; 105-MSPS rate supports 52.5 MHz Nyquist zone with guard bands. Use Value: 95 dBc SFDR ensures >60 dB ACLR compliance for 4-carrier LTE; internal buffer eliminates external amplifier stage. | Use Scenario: High-accuracy oscilloscope or spectrum analyzer front end requiring low-noise, high-linearity sampling. IC Role / Device Role / Timing Role: Core digitizer with deterministic 5-cycle latency and sub-80 fs aperture jitter for time-domain fidelity. Use Value: 78.6 dBFS SNR enables >12.8 ENOB at 70 MHz; dither option suppresses harmonic spurs below –100 dBc. |
| Radar Signal Acquisition | Power Amplifier Linearization |
Use Scenario: Pulse-Doppler radar intermediate frequency (IF) sampling at 70–100 MHz for target detection and velocity estimation. IC Role / Device Role / Timing Role: High-speed ADC feeding FPGA-based pulse compression and FFT processing; requires stable latency for phase coherence. Use Value: 125 MHz analog input bandwidth captures 100 MHz IF signals with <0.1 dB ripple; LVDS outputs interface directly to Xilinx Kintex-7 banks. | Use Scenario: Digital predistortion (DPD) feedback path in GaN power amplifiers, where ADC captures PA output for real-time correction. IC Role / Device Role / Timing Role: Feedback ADC operating at 105 MSPS to resolve wideband distortion products up to 50 MHz offset. Use Value: 95 dBc SFDR isolates distortion tones from carrier; internal VCM simplifies AC-coupled feedback loop design. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS5481IRGCT | 80-MSPS max sample rate; identical 16-bit resolution, SNR (78.4 dBFS @ 70 MHz), and SFDR (93 dBc @ 70 MHz) | Lower bandwidth requirement; suitable for narrowband IF sampling or cost-sensitive designs with relaxed speed needs | Select when system clock budget or FPGA interface speed limits sampling to ≤80 MSPS |
| ADS5483IRGCT | 135-MSPS max sample rate; same architecture but higher power (2.35 W) and reduced SNR (78.2 dBFS @ 70 MHz) | Required for ultra-wideband or direct RF sampling above 60 MHz Nyquist zone | Select when ≥100 MHz instantaneous bandwidth or >105 MSPS timing resolution is mandatory |
Compared with ADS5481IRGCT and ADS5483IRGCT, the ADS5482IRGCT delivers optimal balance of speed (105 MSPS), dynamic range (78.6 dBFS SNR), and power (2.2 W), making it the preferred choice for mid-tier wireless infrastructure and instrumentation where 80–120 MSPS sampling is required.
Availability
ADS5482IRGCT is available at Aetrix Electronics and suitable for wireless infrastructure, test and measurement instrumentation, and radar signal acquisition requiring stable component supply, long-term production continuity, and industrial-temperature-grade reliability.
Supply support for ADS5482IRGCT 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 markets.
The ADS548x family was designed for high-ENOB, low-spur digitization in demanding RF and instrumentation applications-specifically targeting multi-carrier wireless base stations, software-defined radios, and high-fidelity test equipment.
FAQ
What is the maximum sampling rate supported by the ADS5482IRGCT?
The ADS5482IRGCT supports a maximum sampling rate of 105 MSPS, as specified in its electrical characteristics table and confirmed across all typical performance plots in the SLAS565C datasheet. This rate is fixed for the ADS5482 variant and differs from the 80 MSPS (ADS5481) and 135 MSPS (ADS5483) members of the same family. Operation beyond 105 MSPS is not guaranteed and may degrade SNR or SFDR performance.
Does the ADS5482IRGCT require an external reference voltage?
No, the ADS5482IRGCT does not require an external reference voltage. It integrates an internal reference generator providing 1.2 V nominal VREF and 3.1 V VCM output. The REF pin (Pin 4) can be left unconnected or used to disable the internal reference by pulling PDWNF and PDWNS high-enabling external reference use only if needed for system-level calibration traceability.
What power supplies are required for proper operation of the ADS5482IRGCT?
The ADS5482IRGCT requires three independent supplies: 5 V (AVDD5, pins 1/2/8/14/18/24/27/30), 3.3 V analog (AVDD3, pins 9/15/19/25/28/31), and 3.3 V digital/LVDS (DVDD3, pins 42/52/63). Each supply must meet recommended operating conditions: AVDD5 = 4.75–5.25 V, AVDD3 = 3.1–3.6 V, DVDD3 = 3.0–3.6 V. Decoupling capacitors are mandatory per the layout guidelines in the datasheet.
How does the dither function improve performance in the ADS5482IRGCT?
The dither function in the ADS5482IRGCT injects controlled noise into the analog path to randomize quantization error, thereby reducing harmonic distortion and improving SFDR-especially at low input amplitudes (<–30 dBFS). When enabled via the DITHER pin (Pin 36), it raises the noise floor slightly but suppresses discrete spurs below –100 dBc, as verified in Figures G022–G023 for 105 MSPS operation.
What is the thermal performance of the ADS5482IRGCT in its QFN-64 PowerPAD™ package?
The ADS5482IRGCT in the QFN-64 PowerPAD™ package achieves RθJA = 20°C/W with no airflow and RθJC = 7°C/W (junction-to-case top), provided the exposed thermal pad (Pin 65) is soldered with ≥49 thermal vias in a 7×7 array. This allows sustained operation at 2.2 W total power dissipation within the industrial temperature range (–40°C to +85°C) when mounted on a 4-layer PCB with adequate copper area.
ADS5482IRGCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 64-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 105M
- Number of Inputs:
- 1
- Input Type:
- Differential
- Data Interface:
- LVDS - Parallel
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- Pipelined
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 3.1V ~ 3.6V, 5V
- Voltage - Supply, Digital:
- 3V ~ 3.6V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 64-VQFN (9x9)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADS5482IRGCT FAQ
1.How can I place an order for ADS5482IRGCT through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS5482IRGCT 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 ADS5482IRGCT reliable?
The price and inventory of ADS5482IRGCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS5482IRGCT is usually 5 days.
3.What payment methods are accepted for ADS5482IRGCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS5482IRGCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS5482IRGCT?
ADS5482IRGCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS5482IRGCT 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 ADS5482IRGCT?
For technical support, including ADS5482IRGCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS5482IRGCT requirements.
6.How does Aetrix verify that ADS5482IRGCT is sourced from the original manufacturer or authorized distributors?
All ADS5482IRGCT 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 ADS5482IRGCT meets industry standards.
7.What is the process for return or replacement of ADS5482IRGCT?
All ADS5482IRGCT units undergo pre-shipment inspection (PSI). If there is an issue with ADS5482IRGCT, 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 ADS5482IRGCT part is unused and in its original packaging.
Return procedure for ADS5482IRGCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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