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Texas Instruments ADS41B29IRGZT
- Part No.:
- ADS41B29IRGZT
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
ADS41B29IRGZT.pdf
- Description:
- IC ADC 12BIT PIPELINED 48VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,285
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Product details
Overview
ADS41B29IRGZT from Texas Instruments is a 12-bit, 250-MSPS ultralow-power analog-to-digital converter with integrated high-impedance analog input buffer, DDR LVDS and CMOS digital interfaces, and on-chip DC offset correction-designed for wideband communications infrastructure requiring high dynamic performance at low power consumption.
For engineers reviewing the ADS41B29IRGZT datasheet, ADS41B29IRGZT pinout, ADS41B29IRGZT application, or ADS41B29IRGZT equivalent, key selection considerations include its 65.5 dBFS SNR at 170 MHz, 71 dBc SFDR at same frequency, 2-pF input capacitance, programmable LVDS swing (200/350 mV), and VQFN-48 (7 mm × 7 mm) package with PowerPAD™ thermal enhancement.
Technical Context
The ADS41B29IRGZT employs an integrated analog input buffer delivering constant 3 kΩ input resistance and 2 pF capacitance up to 200 MHz, enabling stable wideband signal acquisition without external termination. Its dual-output interface supports DDR LVDS (500 MBPS max) and 1.8-V parallel CMOS, with configurable data format (twos complement/offset binary) via DFS pin.
Internal digital features include programmable gain for SNR/SFDR trade-off, automatic DC offset correction loop, and adaptive power scaling at lower sampling rates. Clocking supports differential LVDS/PECL/LVCMOS inputs up to 250 MSPS, with internal CLKOUTM/P for synchronous data capture in LVDS mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - defines quantization granularity and dynamic range for baseband digitization |
| Max Sampling Rate | 250 MSPS - enables Nyquist-limited capture of signals up to 125 MHz bandwidth |
| SNR @ 170 MHz | 65.5 dBFS - determines minimum detectable signal level in high-frequency receiver chains |
| SFDR @ 170 MHz | 71 dBc - specifies spurious-free operating margin for multi-carrier PA linearization |
| Input Buffer Impedance | 3 kΩ || 2 pF - provides frequency-flat, high-Z interface eliminating matching networks |
| LVDS Output Swing | Programmable 200 mV / 350 mV - allows power vs. noise immunity optimization in FPGA-connected systems |
| Supply Voltages | AVDD = 1.8 V, AVDD_BUF = 3.3 V, DRVDD = 1.8 V - mandates separate analog/digital/buffer rail management |
| Power Consumption | 180 mW (analog) + 96 mW (buffer) + 135 mW (I/O) = 411 mW total - enables dense ADC array deployment |
Pinout & Package
VQFN-48 (RGZ) package with 7 mm × 7 mm body and exposed PowerPAD™ thermally connected to DRGND. Pin pitch: 0.5 mm. RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| INP / INM | Differential analog input | Accepts 1.5-VPP differential signal; buffered input eliminates need for external AC coupling or termination |
| CLKP / CLKM | Differential clock input | Supports LVDS/PECL/LVCMOS clocks; accepts 0.2–1.5 VPP sine wave or 1.6 VPP LVPECL |
| D0_D1_P / D0_D1_M to D10_D11_P / D10_D11_M | DDR LVDS data outputs | 12-bit multiplexed data (D0–D11) output on rising/falling edges of CLKOUTP/M; D12/D13 not implemented in ADS41B29 |
| CLKOUTP / CLKOUTM | Differential output clock | Phase-aligned, buffered copy of sampling clock for synchronous LVDS data capture in FPGA receivers |
| VCM | Common-mode voltage output | Provides 1.7 V reference for external biasing of analog input stage or differential drivers |
| OE | Output enable | Active-high control with internal 100-kΩ pull-up to DRVDD; disables LVDS/CMOS outputs to reduce crosstalk |
| RESET / SCLK / SDATA / SEN | Serial interface control | 4-wire SPI-compatible interface for register configuration; RESET has internal 100-kΩ pull-down |
| AVDD / AGND / DRVDD / DRGND / AVDD_BUF | Power supply terminals | Separate analog/digital/buffer domains require independent decoupling; PowerPAD must be soldered to ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Integrated analog input buffer | 2 pF input capacitance and 3 kΩ || 200 MHz resistive impedance eliminate external matching and preserve bandwidth |
| Programmable LVDS output strength | Configurable 100-Ω or 50-Ω termination support enables compatibility with both standard and low-swing FPGA I/O banks |
| DC offset correction loop | On-chip calibration estimates and cancels ADC core offset, improving baseline accuracy without host processor intervention |
| Gain option for SFDR optimization | Adjustable digital gain improves spurious performance at reduced full-scale input ranges, especially above 100 MHz |
| Adaptive power scaling | Automatic reduction of analog/digital supply currents at sampling rates below 80 MSPS maintains SNR while cutting power |
| Low-swing LVDS mode | 200-mV differential swing reduces I/O power by ~25% versus standard 350-mV mode, critical for high-density ADC arrays |
Applications
| Power Amplifier Linearization | Software Defined Radio |
|---|---|
Use Scenario: Capturing feedback signals from RF power amplifier output to enable digital predistortion (DPD) algorithms. IC Role / Device Role / Timing Role: High-speed digitizer acquiring wideband (up to 125 MHz) PA output spectrum with minimal latency and jitter. Use Value: 65.5 dBFS SNR at 170 MHz and 71 dBc SFDR ensure accurate capture of distortion products for real-time DPD coefficient calculation. |
Use Scenario: Front-end sampling in reconfigurable radio platforms supporting multiple air interfaces (LTE, 5G NR, WiMAX). IC Role / Device Role / Timing Role: Wideband ADC providing flexible digitization across 20–300 MHz IF bands with programmable gain and offset correction. Use Value: Integrated 3.3-V analog buffer enables direct connection to mixer outputs without external amplification or level-shifting. |
| Wireless Communications Infrastructure | Test & Measurement Equipment |
Use Scenario: Base station receiver channel digitization in macro/micro-cell BTS requiring multi-carrier support and thermal efficiency. IC Role / Device Role / Timing Role: Low-power, high-SFDR ADC operating at 250 MSPS with DDR LVDS interface to FPGA-based digital backend. Use Value: 411 mW total power and VQFN-48 PowerPAD packaging enable high-channel-count designs with manageable thermal density. |
Use Scenario: Digitizing high-fidelity analog waveforms in portable spectrum analyzers and vector signal analyzers. IC Role / Device Role / Timing Role: Precision ADC delivering ENOB of 11 bits at 170 MHz for calibrated measurement-grade signal capture. Use Value: ±1.5 LSB INL and on-chip DC offset correction reduce system-level calibration burden and improve measurement repeatability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS41B49IRGZT | 14-bit resolution, 69.1 dBFS SNR @ 170 MHz, identical pinout and interface - higher precision at same speed and power envelope | Required where >12-bit ENOB is needed for wide dynamic range signals (e.g., radar pulse detection) | Select ADS41B49IRGZT when system SNR budget demands ≥13-bit effective resolution at IF frequencies up to 170 MHz |
| AD9230BCPZ-250 | Analog Devices 12-bit, 250-MSPS ADC with 67.5 dBFS SNR @ 170 MHz; uses CMOS-only interface and lacks integrated analog buffer | Suitable for cost-sensitive designs where external buffering is acceptable and FPGA LVDS I/O is unavailable | Choose AD9230BCPZ-250 only if board space permits discrete buffer circuitry and system clocking architecture favors single-ended CMOS timing |
Compared with ADS41B49IRGZT, the ADS41B29IRGZT trades 2-bit resolution for identical power and package compatibility; versus AD9230BCPZ-250, it delivers superior input interface simplicity and LVDS timing robustness but requires tighter supply sequencing.
Availability
ADS41B29IRGZT is available at Aetrix Electronics and suitable for wireless infrastructure, software-defined radio, and test equipment applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing from authorized channels.
Supply support for ADS41B29IRGZT 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 ADS41Bx9 product line was designed specifically for ultralow-power, wideband digitization in multi-carrier communications systems-emphasizing integrated analog buffering, DDR LVDS interface efficiency, and adaptive power management.
FAQ
What is the maximum analog input frequency supported by the ADS41B29IRGZT?
The ADS41B29IRGZT supports analog input frequencies up to 400 MHz with 1.5-VPP amplitude and up to 600 MHz with 1-VPP amplitude, enabled by its 800-MHz analog input bandwidth and integrated buffer. This capability is confirmed in Section 6.3 of the SBAS486F datasheet under Recommended Operating Conditions.
Does the ADS41B29IRGZT support both LVDS and CMOS digital output interfaces?
Yes, the ADS41B29IRGZT supports dual digital output modes: DDR LVDS (with programmable 200/350-mV swing and 50/100-Ω termination) and 1.8-V parallel CMOS. Interface selection is controlled by the DFS pin, and both modes are fully specified in Electrical Characteristics Table 6.7.
What is the function of the VCM pin on the ADS41B29IRGZT?
The VCM pin on the ADS41B29IRGZT outputs a stable 1.7-V common-mode voltage with ±0.05-V tolerance, intended for external biasing of differential analog sources or input drivers. It can source/sink up to 4 mA and is documented in the Pin Functions table (Section 5) of the SBAS486F datasheet.
How does the integrated analog input buffer affect system design for the ADS41B29IRGZT?
The integrated analog input buffer in the ADS41B29IRGZT provides constant 3-kΩ input resistance and 2-pF capacitance across 200 MHz, eliminating the need for external AC coupling, termination resistors, or baluns. This simplifies front-end design and preserves signal integrity in wideband applications like PA linearization.
What power supply sequencing is required for reliable operation of the ADS41B29IRGZT?
The ADS41B29IRGZT requires AVDD and AVDD_BUF to be powered before DRVDD, with all supplies stabilized before applying the input clock. This sequence prevents ESD diode conduction and ensures proper startup of analog and digital domains, as specified in Section 10.1 (Power-Supply Sequence) of the SBAS486F datasheet.
ADS41B29IRGZT 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:
- 12
- Sampling Rate (Per Second):
- 250M
- 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:
- -
ADS41B29IRGZT FAQ
1.How can I place an order for ADS41B29IRGZT through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS41B29IRGZT 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 ADS41B29IRGZT reliable?
The price and inventory of ADS41B29IRGZT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS41B29IRGZT is usually 5 days.
3.What payment methods are accepted for ADS41B29IRGZT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS41B29IRGZT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS41B29IRGZT?
ADS41B29IRGZT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS41B29IRGZT 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 ADS41B29IRGZT?
For technical support, including ADS41B29IRGZT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS41B29IRGZT requirements.
6.How does Aetrix verify that ADS41B29IRGZT is sourced from the original manufacturer or authorized distributors?
All ADS41B29IRGZT 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 ADS41B29IRGZT meets industry standards.
7.What is the process for return or replacement of ADS41B29IRGZT?
All ADS41B29IRGZT units undergo pre-shipment inspection (PSI). If there is an issue with ADS41B29IRGZT, 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 ADS41B29IRGZT part is unused and in its original packaging.
Return procedure for ADS41B29IRGZT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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