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Texas Instruments ADS58B18IRGZT
- Part No.:
- ADS58B18IRGZT
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
ADS58B18IRGZT.pdf
- Description:
- IC ADC 11BIT PIPELINED 48VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,131
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Product details
Overview
ADS58B18IRGZT from Texas Instruments is an 11-bit, 200MSPS ultralow-power analog-to-digital converter with integrated high-impedance analog input buffer and TI-proprietary SNRBoost technology. It delivers 66dBFS SNR and 81dBc SFDR at 150MHz input frequency, consumes only 258mW analog power at full rate, and targets wideband communications systems requiring high dynamic performance with minimal power draw.
For engineers reviewing the ADS58B18IRGZT datasheet, ADS58B18IRGZT pinout, ADS58B18IRGZT application, or ADS58B18IRGZT equivalent, this page provides verified technical context, real-world interface behavior, confirmed package mapping to QFN-48 (RGZ), and validated alternative options for PA linearization, broadband receiver, and multi-carrier baseband sampling designs.
Technical Context
The ADS58B18IRGZT implements a buffered front-end architecture with constant 4kΩ differential input impedance and 550MHz analog bandwidth, enabling stable performance across multi-carrier RF input spectra up to 600MHz. Its SNRBoost feature selectively enhances signal-to-noise ratio in sub-Nyquist bandwidths-e.g., delivering –77.7dBFS SNR in 20MHz bands-without altering sampling rate or resolution.
It supports dual-output interfaces: DDR LVDS (350mV or 200mV swing, programmable termination) and 1.8V parallel CMOS. Internal DC offset correction, programmable gain for SNR/SFDR trade-off, and dynamic power scaling down to 30MSPS ensure adaptability across varying signal chain requirements while maintaining specification compliance over –40°C to +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution & Speed | 11-bit, 200MSPS maximum sampling rate - enables digitization of wide instantaneous bandwidths in LTE/WiMAX infrastructure receivers. |
| SNR / SFDR | 66dBFS SNR and 81dBc SFDR at 150MHz input - meets stringent linearity requirements for digital predistortion feedback paths. |
| Analog Power | 258mW at 200MSPS - reduces thermal load and simplifies power delivery in dense RF front-end modules. |
| Input Buffer | Integrated high-Z analog buffer with 4kΩ differential resistance and 550MHz bandwidth - eliminates need for external driver amplifiers in many IF-sampling applications. |
| Output Interface | DDR LVDS (350mV/200mV swing, 100Ω termination) or 1.8V CMOS - supports low-jitter FPGA capture with flexible voltage and timing margin options. |
| SNRBoost | Texas Instruments–proprietary noise-shaping enhancement active only on ADS58B18 - improves effective SNR by >11dB in narrowband channels without hardware change. |
| Operating Temp | –40°C to +85°C industrial range - qualified for deployment in outdoor small cells and remote radio units. |
Pinout & Package
ADS58B18IRGZT is housed in a thermally enhanced QFN-48 (RGZ) package measuring 7mm × 7mm with exposed PowerPAD™ connected to DRGND. Pin assignments are identical for LVDS and CMOS modes except for multiplexed data pins and CLKOUT configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| INP / INM | Differential analog input | High-impedance buffered inputs accepting 1.5VPP differential signal; common-mode bias set via VCM pin. |
| CLKP / CLKM | Differential clock input | Accepts LVPECL/LVDS/LVCMOS clocks; supports low-amplitude 0.2VPP sine-wave inputs down to 30MSPS. |
| D0_P / D0_M through D9_D10_P / D9_D10_M | DDR LVDS data outputs | Multiplexed 11-bit output bus (D0–D10) using double-data-rate serialization; requires matched 100Ω differential termination. |
| SNRBoost_En | Digital control input | Active-high enable for SNRBoost mode - functional only on ADS58B18; no connection required on ADS58B19. |
| RESET / SCLK / SDATA / SEN | Serial interface control | 4-wire SPI-compatible interface for register configuration; RESET initializes internal registers and determines pin function mapping. |
| VCM | Analog common-mode reference output | Provides 1.7V ±50mV reference for external input biasing - critical for preserving ADC linearity with passive baluns or transformers. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated analog input buffer | Eliminates external op-amp drivers and maintains flat frequency response to 550MHz, reducing board area and component count in IF sampling chains. |
| SNRBoost technology | Delivers –77.7dBFS SNR in 20MHz bandwidth - extends usable dynamic range for narrowband signals without increasing sampling rate or power. |
| Dynamic power scaling | Automatically reduces current draw below 80MSPS while preserving full AC performance - ideal for adaptive rate systems like TDD base stations. |
| Programmable LVDS output strength | Configurable 100Ω or 50Ω termination support - enables robust signal integrity across varied PCB trace lengths and FPGA input thresholds. |
| DC offset correction loop | On-chip closed-loop cancellation reduces static offset to <±15mV - minimizes calibration overhead in production test and field deployment. |
Applications
| Direct Digital Synthesis Feedback | Wideband Receiver Front-End |
|---|---|
|
Use Scenario: Capturing DAC output errors in closed-loop DDS systems for real-time correction. IC Role / Device Role / Timing Role: High-linearity, low-latency ADC sampling DAC reconstruction path at 200MSPS to detect spurious artifacts. Use Value: 81dBc SFDR ensures accurate identification of DAC spectral imperfections below –80dBc, enabling precise error vector magnitude (EVM) correction. |
Use Scenario: Digitizing 100MHz+ IF signals in software-defined radios and spectrum analyzers. IC Role / Device Role / Timing Role: Buffered front-end ADC handling 1.5VPP differential inputs up to 600MHz with minimal gain variation. Use Value: 550MHz analog bandwidth and 4kΩ constant input impedance preserve amplitude flatness across multi-octave tuning ranges. |
| PA Linearization Monitoring | Multi-Carrier Baseband Sampling |
|
Use Scenario: Real-time capture of power amplifier output for digital predistortion (DPD) algorithm training. IC Role / Device Role / Timing Role: Low-latency, high-SNR ADC feeding FPGA-based DPD engine with synchronized clock and data valid timing. Use Value: 66dBFS SNR at 150MHz and <1ps aperture jitter enable accurate modeling of PA memory effects in LTE-A carrier aggregation. |
Use Scenario: Simultaneous sampling of multiple adjacent carriers in cable DOCSIS or 5G NR FR1 baseband processing. IC Role / Device Role / Timing Role: 11-bit resolution with SNRBoost activated in 20MHz slices to resolve individual carriers within composite 100MHz+ spectrum. Use Value: –77.7dBFS SNR in narrow bandwidths allows detection of low-level interferers or pilot tones buried beneath dominant carriers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS58B19IRGZT | 9-bit, 250MSPS; no SNRBoost; higher SFDR at very high frequencies (>200MHz) | Better suited for wide instantaneous bandwidth capture where resolution is secondary to speed and spurious-free range | Select when system prioritizes raw throughput over narrowband SNR and operates above 170MHz input frequency |
| ADS42JB49IRGCT | 14-bit, 250MSPS; no integrated analog buffer; higher power (540mW); JESD204B interface | Targets high-fidelity instrumentation and radar where bit depth outweighs power constraints and FPGA compatibility is less critical | Choose when 14-bit ENOB and deterministic latency are mandatory, and board space permits external buffering and higher thermal management |
Compared with ADS58B19IRGZT and ADS42JB49IRGCT, ADS58B18IRGZT uniquely balances 11-bit resolution, 200MSPS speed, ultralow analog power (258mW), and integrated buffering-making it optimal for portable or thermally constrained wideband communications systems requiring both SNR headroom and design simplicity.
Availability
ADS58B18IRGZT is available at Aetrix Electronics and suitable for wireless infrastructure, test equipment, and defense electronics requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant green packaging.
Supply support for ADS58B18IRGZT 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 decades of leadership in high-performance data converters and signal chain solutions.
The ADS58B18IRGZT belongs to TI's ADS4xxx ultralow-power ADC family, designed specifically for battery-constrained and thermally sensitive communications equipment where dynamic performance must not compromise power efficiency.
FAQ
What is the primary function of the SNRBoost_En pin on the ADS58B18IRGZT?
The SNRBoost_En pin is an active-high digital control input that enables TI's proprietary SNRBoost noise-shaping technology exclusively on the ADS58B18IRGZT. When asserted, it improves effective SNR by >11dB in bandwidths less than Nyquist (e.g., –77.7dBFS in 20MHz), without altering sampling rate or resolution. This feature is not present on ADS58B19IRGZT.
Does the ADS58B18IRGZT require external analog input buffering?
No, the ADS58B18IRGZT integrates a high-impedance analog input buffer with constant 4kΩ differential resistance and 550MHz bandwidth. This eliminates the need for external driver amplifiers in most IF-sampling applications, reducing bill-of-materials cost, board space, and signal path complexity while maintaining linearity up to 600MHz input frequency.
What are the supported output interface options for the ADS58B18IRGZT?
The ADS58B18IRGZT supports two configurable digital output interfaces: DDR LVDS (with selectable 350mV standard or 200mV low-swing modes and programmable 100Ω/50Ω termination) and 1.8V parallel CMOS. The interface type is selected via the DFS pin, and both modes maintain full 11-bit resolution and timing specifications across the industrial temperature range.
How does the ADS58B18IRGZT handle DC offset correction?
The ADS58B18IRGZT includes an on-chip DC offset correction loop that automatically cancels static input offset, reducing typical offset error to within ±15mV across temperature. This feature minimizes calibration burden in production and field use, especially in zero-IF or direct-conversion receiver architectures where residual DC offsets degrade baseband signal integrity.
What package type and thermal characteristics apply to the ADS58B18IRGZT?
The ADS58B18IRGZT uses a QFN-48 (RGZ) package measuring 7mm × 7mm with an exposed PowerPAD™ thermally connected to DRGND. Its junction-to-board thermal resistance (θJB) is 10°C/W, and junction-to-ambient (θJA) is 29°C/W - enabling reliable operation at full 200MSPS in compact enclosures without forced airflow, provided proper PCB copper pour and thermal vias are implemented.
ADS58B18IRGZT 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:
- 11
- Sampling Rate (Per Second):
- 200M
- Number of Inputs:
- 1
- Input Type:
- Differential
- Data Interface:
- LVDS - Parallel, Parallel
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- Pipelined
- Reference Type:
- Internal
- Voltage - Supply, Analog:
- 1.7V ~ 1.9V
- Voltage - Supply, Digital:
- 1.7V ~ 1.9V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 48-VQFN (7x7)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADS58B18IRGZT FAQ
1.How can I place an order for ADS58B18IRGZT through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS58B18IRGZT 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 ADS58B18IRGZT reliable?
The price and inventory of ADS58B18IRGZT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS58B18IRGZT is usually 5 days.
3.What payment methods are accepted for ADS58B18IRGZT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS58B18IRGZT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS58B18IRGZT?
ADS58B18IRGZT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS58B18IRGZT 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 ADS58B18IRGZT?
For technical support, including ADS58B18IRGZT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS58B18IRGZT requirements.
6.How does Aetrix verify that ADS58B18IRGZT is sourced from the original manufacturer or authorized distributors?
All ADS58B18IRGZT 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 ADS58B18IRGZT meets industry standards.
7.What is the process for return or replacement of ADS58B18IRGZT?
All ADS58B18IRGZT units undergo pre-shipment inspection (PSI). If there is an issue with ADS58B18IRGZT, 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 ADS58B18IRGZT part is unused and in its original packaging.
Return procedure for ADS58B18IRGZT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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