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Texas Instruments THS6301IRSAR
- Part No.:
- THS6301IRSAR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-VQFN Exposed Pad
- Datasheet:
-
THS6301IRSAR.pdf
- Description:
- IC OPAMP CFA 1 CIRCUIT 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,579
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Product details
Overview
THS6301IRSAR from Texas Instruments is a single-channel, current-feedback differential line driver IC designed for G.Fast and legacy DSL systems. It delivers 670 MHz small-signal bandwidth (drive mode 5), 275 MHz large-signal bandwidth, and 8.6 V/V differential gain at 12 V supply, enabling 212-MHz G.Fast profiles with 55 dB MTPR at 8 dBm line power in DSL home gateway line drivers.
For engineers reviewing the THS6301IRSAR datasheet, THS6301IRSAR pinout, THS6301IRSAR application, or THS6301IRSAR equivalent, key selection criteria include adjustable bias current via external resistor (RIADJ), six programmable drive modes (B1/B2 control), low-power line-termination capability (10.2 mA), and 4-mm × 4-mm VQFN-16 package compatibility with high-density DSL PCB layouts.
Technical Context
The THS6301IRSAR employs a current-feedback architecture optimized for wideband line driving, supporting native DMT signals up to 212 MHz. Its dual digital control pins (B1, B2) select among six drive modes - including ADSL2+, VDSL-17a/30a, and G.Fast 106/212 MHz - each with distinct quiescent current (13–56 mA), slew rate (2.5–10.5 kV/µs), and MTPR performance.
Internally fixed bias settings reduce quiescent current where full performance isn't required, while external IADJ pin enables fine-tuning of bias current using RIADJ (e.g., 75 kΩ sets mid-power mode). Two line-termination modes (00/Z0) maintain impedance matching at ultra-low power (10.2 mA), and power-down mode draws only 2.4 mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-signal bandwidth | 670 MHz (drive mode 5, 1 VPP output) - supports full G.Fast 106/212 MHz spectral occupancy without gain roll-off |
| Large-signal bandwidth | 275 MHz (drive mode 5, 15 VPP output) - maintains linearity under high-output swing conditions typical of DSL line drivers |
| Differential gain | 8.6 V/V (typical, DC, no load) - provides precise signal amplification with minimal distortion across xDSL frequency bands |
| MTPR @ 212 MHz | 55 dBc (line power = 8 dBm, PAR = 15 dB, bias = 10) - meets G.Fast spectral mask requirements for noise-limited channels |
| Quiescent current | 38.9 mA (drive mode 5, G.Fast mid power) - balances power efficiency and RF performance for continuous operation |
| Supply voltage | 12 V (±0.6 V operating range) - enables high-voltage headroom for 18 VPP differential output swing into 200 Ω |
| Input-referred noise | 3.7 nV/√Hz (drive mode 5, f > 1 MHz) - minimizes contribution to system noise floor in high-SNR DSL applications |
Pinout & Package
The THS6301IRSAR is housed in a 4-mm × 4-mm, 16-pin VQFN package (RSA) with exposed thermal pad connected to pin 4 (NC, recommended tied to VS–). Pin 4 serves as both mechanical thermal anchor and electrical reference point for the thermal pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| B1 | Digital input (MSB) | Logic-level control pin referenced to VS–; selects drive mode with B2 (e.g., B1B2 = 01 → G.Fast mid power) |
| B2 | Digital input (LSB) | Logic-level control pin referenced to VS–; used with B1 to configure six operational modes and termination states |
| IADJ | Analog bias reference | Connects external resistor (RIADJ) to set quiescent current; 75 kΩ yields 38.9 mA in drive mode 5 |
| IN+ | Differential analog input (+) | Positive input of current-feedback amplifier; 10 kΩ differential input resistance enables direct DAC interface |
| IN– | Differential analog input (–) | Negative input of current-feedback amplifier; complements IN+ for balanced signal injection and common-mode rejection |
| OUT+ | Differential analog output (+) | High-current output stage delivering up to 160 mA sourcing/sinking; optimized for transformer-coupled DSL line interface |
| OUT– | Differential analog output (–) | Complementary output to OUT+; maintains tight amplitude/phase matching for >60 dB CMRR up to 100 MHz |
| VS+ | Positive supply rail | 12-V main supply connection; bypassing with ≥1 µF ceramic capacitor near pin is mandatory for stability |
| VS– | Negative supply rail | Ground reference for analog and digital sections; also ties thermal pad potential for optimal thermal dissipation |
Key Features
| Feature | Design Value |
|---|---|
| G.Fast 212-MHz support | Validated 55 dB MTPR at 8 dBm line power enables deployment in next-gen fiber-deep DSLAMs requiring full 212 MHz spectrum utilization |
| Six programmable drive modes | B1/B2 digital inputs select ADSL2+, VDSL, or G.Fast profiles - each with optimized IQ, slew rate, and bandwidth trade-offs |
| Adjustable bias current | Single external resistor (RIADJ) scales quiescent current across all modes - simplifies thermal design and power budgeting |
| Low-power line termination | Z0 mode draws only 10.2 mA while maintaining 100-Ω line impedance match - reduces standby power in always-on gateways |
| Fast mode switching | 50–400 ns transitions between drive/termination/power-down modes - supports dynamic profile adaptation during line retraining |
Applications
| G.Fast Home Gateway Line Driver | VDSL2 DSLAM Line Card Amplifier |
|---|---|
Use Scenario: Driving twisted-pair copper lines in residential gateways supporting G.Fast 106/212 MHz profiles with 1-in-64 missing tones. IC Role / Device Role / Timing Role: Differential line driver providing high-fidelity DMT signal amplification and impedance matching to the line transformer. Use Value: Delivers 55 dB MTPR at 212 MHz and 8 dBm line power - directly meeting ITU-T G.9701 spectral emission limits without external filtering. |
Use Scenario: Amplifying upstream/downstream signals on multi-port VDSL2 line cards in central office DSLAMs supporting 17a/30a/35b profiles. IC Role / Device Role / Timing Role: High-linearity current-feedback driver enabling >73 dB MTPR at 17.6 MHz for VDSL2-17a compliance. Use Value: Six drive modes allow per-port optimization - e.g., bias 11 for VDSL2-30a (69 dB MTPR) or bias 1Z for high-power 35b operation. |
| PLC Broadband Communication Driver | DAC Output Amplifier for Wideband Test Equipment |
Use Scenario: Transmitting OFDM-based broadband signals over power lines (CENELEC A/B/C/D bands) in smart grid communication nodes. IC Role / Device Role / Timing Role: Wideband differential driver interfacing between DAC and coupling network, handling up to 30 MHz baseband signals. Use Value: 635 MHz SSBW in drive mode 3 ensures flat gain response across CENELEC D band (1.6–30 MHz), minimizing symbol error rate. |
Use Scenario: Buffering and amplifying high-speed DAC outputs (e.g., 16-bit, 500 MSPS) in automated test equipment generating multi-tone stimuli. IC Role / Device Role / Timing Role: Fixed-gain differential amplifier with 8.6 V/V gain and 670 MHz bandwidth, scaling DAC output to ±9 V differential swing. Use Value: 18 VPP output swing into 200 Ω and 3.7 nV/√Hz input noise preserve SFDR > 75 dBc in wideband signal generation applications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar differential line driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| THS6212IRGTR | Lower bandwidth (220 MHz SSBW), fixed 12-V operation, no digital mode control or IADJ bias adjustment | Targeted at ADSL2+/VDSL2 only; lacks G.Fast 212 MHz support and programmable power scaling | Choose when G.Fast is not required and board space allows larger 5-mm QFN package |
| LMH5401RTVR | Higher bandwidth (1.2 GHz SSBW), 5-V supply, integrated level shifters, but no built-in line-termination modes or MTPR-optimized biasing | Designed for RF instrumentation and optical module drivers - not characterized for DSL MTPR or line power compliance | Prefer for wideband non-DSL applications requiring >1 GHz bandwidth and 5-V compatibility |
Compared with THS6301IRSAR, THS6212IRGTR offers simpler control but cannot meet G.Fast 212 MHz MTPR targets, while LMH5401RTVR delivers superior bandwidth yet requires external circuitry to achieve DSL-compliant line termination and power management.
Availability
THS6301IRSAR is available at Aetrix Electronics and suitable for G.Fast home gateways, VDSL2 DSLAM line cards, and PLC broadband communication systems requiring stable component supply, long-term lifecycle support, and traceable sourcing for industrial deployments.
Supply support for THS6301IRSAR 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 company specializing in analog and embedded processing technologies, with leadership in high-performance amplifiers, data converters, and communications ICs.
The THS6301IRSAR belongs to TI's high-speed line driver product line, engineered specifically for broadband access infrastructure - balancing RF linearity, programmable power efficiency, and DSL-standard compliance in compact VQFN packaging.
FAQ
What is the maximum small-signal bandwidth of the THS6301IRSAR and under what conditions?
The THS6301IRSAR achieves a maximum small-signal bandwidth of 670 MHz in drive mode 5 (B1B2 = 01, G.Fast mid power), measured at 1 VPP output with 100-Ω load and 12-V supply. This bandwidth enables full spectral coverage of G.Fast 106/212 MHz profiles without gain compression or phase distortion.
How does the THS6301IRSAR support multiple DSL standards like ADSL2+, VDSL2, and G.Fast?
The THS6301IRSAR supports multiple DSL standards through six digitally selectable drive modes controlled by B1 and B2 pins. Each mode configures internal biasing, slew rate, and power consumption - e.g., mode 0Z for ADSL2+ (69 dB MTPR), mode 11 for VDSL2-30a (69 dB), and mode 10 for G.Fast 212 MHz (55 dB) - all validated per ITU-T specifications.
What is the purpose of the IADJ pin on the THS6301IRSAR and how is it used?
The IADJ pin on the THS6301IRSAR sets quiescent current via an external resistor (RIADJ); for example, a 75-kΩ resistor yields 38.9 mA in drive mode 5. This allows designers to optimize power vs. performance trade-offs across all six drive modes without changing internal circuitry - critical for thermal management in densely packed DSL line cards.
Does the THS6301IRSAR include power-saving features for always-on DSL equipment?
Yes, the THS6301IRSAR includes two dedicated line-termination modes (00 and Z0) that maintain 100-Ω impedance match while drawing only 10.2 mA (Z0 mode) or 16 mA (00 mode), plus a power-down mode consuming just 2.4 mA. These features reduce standby power in residential gateways and remote DSLAMs without compromising reactivation speed (≤60 ns wake-up).
What package type and thermal characteristics does the THS6301IRSAR use?
The THS6301IRSAR uses a 4-mm × 4-mm, 16-pin VQFN package (RSA) with exposed thermal pad. Its junction-to-board thermal resistance is 18 °C/W, and junction-to-ambient is 39 °C/W - enabling reliable operation at 125°C junction temperature when mounted on 2-oz copper with 6 thermal vias under the pad, as verified in TI's SBOS877A layout guidelines.
THS6301IRSAR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-VQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Current Feedback
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 10500V/µs
- Gain Bandwidth Product:
- 1.1 GHz
- -3db Bandwidth:
- 500 MHz
- Current - Input Bias:
- -
- Voltage - Input Offset:
- -
- Current - Supply:
- 45.3mA
- Current - Output / Channel:
- 160 mA
- Voltage - Supply Span (Min):
- 11.4 V
- Voltage - Supply Span (Max):
- 12.6 V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QFN (4x4)
THS6301IRSAR FAQ
1.How can I place an order for THS6301IRSAR through Aetrix?
Please submit a Request for Quotation (RFQ) for THS6301IRSAR 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 THS6301IRSAR reliable?
The price and inventory of THS6301IRSAR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for THS6301IRSAR is usually 5 days.
3.What payment methods are accepted for THS6301IRSAR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for THS6301IRSAR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for THS6301IRSAR?
THS6301IRSAR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your THS6301IRSAR 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 THS6301IRSAR?
For technical support, including THS6301IRSAR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your THS6301IRSAR requirements.
6.How does Aetrix verify that THS6301IRSAR is sourced from the original manufacturer or authorized distributors?
All THS6301IRSAR 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 THS6301IRSAR meets industry standards.
7.What is the process for return or replacement of THS6301IRSAR?
All THS6301IRSAR units undergo pre-shipment inspection (PSI). If there is an issue with THS6301IRSAR, 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 THS6301IRSAR part is unused and in its original packaging.
Return procedure for THS6301IRSAR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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