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Texas Instruments THS6226IRHBT
- Part No.:
- THS6226IRHBT
- Manufacturer:
- Texas Instruments
- Category:
- Telecom
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
THS6226IRHBT.pdf
- Description:
- IC TELECOM INTERFACE 32VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:225
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Product details
Overview
THS6226IRHBT from Texas Instruments is a dual-port, gated-class H, current-feedback differential line driver IC designed for VDSL2 systems. It delivers up to +20.5dBm line power (8.5MHz), supports G.993.2 Profile 8b, achieves –91dBc HD3 at 1MHz, provides 40VPP differential output swing into 60Ω with 1:1.4 transformer, and features digitally adjustable quiescent current (7.6–23.0mA per port).
For engineers reviewing the THS6226IRHBT datasheet, THS6226IRHBT pinout, THS6226IRHBT application, or THS6226IRHBT equivalent, key selection considerations include class H voltage boost capability, MTPR distortion performance, serial-programmable bias control, and QFN-32 PowerPAD thermal management requirements.
Technical Context
The THS6226IRHBT implements two independent current-feedback amplifier channels (AB and CD), each with integrated class H charge-pump circuitry enabling ±5.5V to ±17.5V output swing beyond the +12V supply rail. Its architecture separates quiescent current control (B6–B9 bits) from power-down mode selection (B4–B5), allowing independent optimization of linearity vs. power across VDSL2 profiles.
Each port supports active impedance matching via FB_A/FB_B (AB) and FB_C/FB_D (CD) pins, delivering fixed 19V/V differential gain without external feedback components. The 2-pin serial interface (CLK/DATA) enables real-time bias reconfiguration with 1μs turn-on/turn-off delay and programmable parity validation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Swing | 40VPP differential into 60Ω load using +12V supply and 1:1.4 transformer - enables >+20.5dBm line power compliance with G.993.2 Profile 8b |
| Harmonic Distortion | –91dBc HD3 at 1MHz, full bias - meets stringent MTPR requirements for VDSL2 central-office transmission |
| Bandwidth | 125MHz small-signal –3dB bandwidth - supports signal fidelity up to 30MHz for high-speed xDSL applications |
| Quiescent Current | Digitally adjustable 7.6–23.0mA per port in 1.0mA steps - allows profile-specific power optimization (e.g., 7.6mA for ADSL2+, 23.0mA for Profile 30a) |
| Port Separation | 90dB at 1MHz - ensures minimal crosstalk between dual ports in multi-line DSLAM configurations |
| PSRR | 70dB at 1MHz - maintains signal integrity under noisy +12V supply conditions typical in telecom line cards |
| Input Noise Density | 6.3nV/√Hz input-referred - preserves SNR in high-gain, wideband line driver stages |
Pinout & Package
VQFN-32 PowerPAD™ package (5mm × 5mm, 0.5mm pitch) with thermally enhanced exposed pad electrically isolated from all pins; requires soldering to PCB ground plane for thermal dissipation and mechanical stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 8, 12, 29) | Analog ground reference | Four dedicated analog ground connections minimize ground bounce and improve PSRR across dual ports |
| INA/INB/INC/IND (Pins 7,6,3,2) | Differential inputs for AB/CD ports | High-impedance (500kΩ||2pF) inputs accept AC-coupled DSL signals without loading upstream circuitry |
| OUTA/OUTB/OUTC/OUTD (Pins 17,20,21,24) | Differential outputs | Capable of ±383mA sourcing/sinking into 60Ω - drives transformer-coupled DSL lines with minimal headroom loss |
| VH_ENAB/VH_ENCD (Pins 9,32) | Class H enable control | Logic-level inputs that activate charge-pump circuitry to extend output voltage range beyond supply rails |
| CLK/DATA (Pins 5,4) | 2-wire serial programming interface | Supports real-time bias configuration with 200ns clock period and hardware parity validation |
| FB_A/FB_B/FB_C/FB_D (Pins 18,19,22,23) | Active impedance feedback | Enable precise 100Ω line termination without external resistors - critical for minimizing echo and reflection |
| VLL_AB/VHH_AB/CAPL_AB/CAPH_AB (Pins 10,16,11,15) | Class H pump supply & capacitor terminals | Interface with external 33nF charge-pump capacitors to generate ±5.5V boosted rails for extended swing |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent ports | Enables simultaneous operation of two VDSL2 lines on single IC - reduces component count and board space in DSLAM line cards |
| Gated-class H architecture | Delivers +17.5V/–5.5V output swing on +12V supply - achieves >+20.5dBm line power without requiring ±15V rails |
| Digitally adjustable quiescent current | 16-step bias control (7.6–23.0mA/port) via 4-bit register - matches power consumption to specific VDSL2 profile requirements |
| Integrated mid-supply buffer | Eliminates need for external biasing components - simplifies design and improves channel-to-channel matching |
| Full capacitor recharge in 3ms | Ensures rapid recovery after line transients or power cycling - maintains service continuity during DSL link renegotiation |
Applications
| VDSL2 Central Office Line Card | VDSL2 Remote Terminal Unit |
|---|---|
Use Scenario: High-density DSLAM chassis transmitting multiple VDSL2 lines over copper pairs to customer premises. IC Role / Device Role / Timing Role: Dual-port line driver providing differential output drive, active impedance matching, and class H voltage boosting for G.993.2 Profile 8b compliance. Use Value: Enables +20.5dBm line power at 8.5MHz while maintaining –91dBc HD3 distortion - extends reach and data rate without increasing power supply complexity. | Use Scenario: Compact remote DSL node deployed in street cabinets serving 4–8 subscribers within 1km loop distance. IC Role / Device Role / Timing Role: Low-power line driver operating in Profile 17a or 30a with dynamically adjusted bias current to match loop length and noise conditions. Use Value: Reduces per-port quiescent current to 12–18mA while sustaining >+19.8dBm output - lowers thermal load and enables fanless enclosure design. |
| ADSL2+/ADSL2++ Backward Compatibility | Multi-Profile VDSL2 Field Upgrade Platform |
Use Scenario: Legacy DSL infrastructure requiring support for both ADSL2+ and VDSL2 services on same hardware platform. IC Role / Device Role / Timing Role: Programmable line driver configured via serial interface to operate in low-bias ADSL2+ mode (7.6mA) or full-bias VDSL2 mode (23.0mA). Use Value: Eliminates need for hardware redesign when upgrading from ADSL to VDSL - reduces time-to-market and inventory SKUs. | Use Scenario: Service provider deploying software-defined DSL line cards capable of supporting multiple G.993.2 profiles based on subscriber demand. IC Role / Device Role / Timing Role: Serial-configurable driver enabling real-time profile switching (e.g., Profile 8b → Profile 30a) without power cycle or firmware update. Use Value: Supports dynamic spectrum management and adaptive power control - optimizes spectral efficiency and coexistence in dense deployment environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port VDSL2 line driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| THS6216IRHBT | Single-port version; identical architecture, bias control, and specs per channel - lacks second port and associated pins | Suitable only for single-line applications; cannot replace dual-port functionality without board redesign | Select when only one VDSL2 line per IC is required to reduce cost and layout area |
| MAX22026ETX+ | Single-ended output architecture; 100Ω line drive; no class H boost; lower max output power (+17.5dBm) | Targeted at cost-sensitive, short-loop ADSL deployments; not compliant with G.993.2 Profile 8b line power requirements | Choose for legacy ADSL2+ systems where +20.5dBm is not required and PCB space is constrained |
Compared with THS6226IRHBT, THS6216IRHBT offers identical per-port performance but requires two units for dual-line operation, increasing BOM cost and thermal footprint; MAX22026ETX+ provides simpler integration but sacrifices 3dB line power headroom and VDSL2 profile flexibility.
Availability
THS6226IRHBT is available at Aetrix Electronics and suitable for VDSL2 line card development, DSLAM manufacturing, and telecom infrastructure upgrades requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for THS6226IRHBT 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 connectivity technologies for industrial, automotive, and communications markets.
The THS6226IRHBT belongs to TI's high-speed line driver product line, engineered specifically for xDSL infrastructure applications demanding high linearity, programmable power efficiency, and robust ESD protection in compact packages.
FAQ
What is the maximum line power achievable with the THS6226IRHBT?
The THS6226IRHBT delivers up to +20.5dBm line power into 100Ω at 8.5MHz under G.993.2 Profile 8b conditions, verified with 1:1.4 transformer and full bias mode. This performance is enabled by its gated-class H architecture, which extends output voltage swing beyond the +12V supply rail to ±17.5V/∓5.5V differentially. The THS6226IRHBT maintains –91dBc HD3 distortion at this output level, ensuring compliance with VDSL2 spectral mask requirements.
How does the THS6226IRHBT implement class H operation?
The THS6226IRHBT uses dedicated charge-pump circuitry per port (AB and CD) controlled by VH_ENAB/VH_ENCD pins. When enabled, external 33nF capacitors (CAPL_AB/CAPH_AB and CAPL_CD/CAPH_CD) store energy to generate boosted voltage rails (VLL_AB/VHH_AB and VLL_CD/VHH_CD), extending output swing to ±17.5V/∓5.5V. The THS6226IRHBT automatically manages pump activation based on signal envelope, minimizing power consumption while preserving linearity during peak output demands.
Can the THS6226IRHBT be used in ADSL2+ systems?
Yes, the THS6226IRHBT is backward-compatible with ADSL/ADSL2+/ADSL2++ systems. In low-bias mode (7.6mA per port), it operates efficiently at +14.5dBm line power up to 30MHz while consuming minimal quiescent current. Its fixed 19V/V gain, active impedance matching, and 125MHz bandwidth ensure signal integrity across ADSL2+ frequency bands. The THS6226IRHBT eliminates need for separate ADSL and VDSL2 driver designs, simplifying platform development.
What thermal management is required for the THS6226IRHBT?
The THS6226IRHBT uses a VQFN-32 PowerPAD™ package requiring soldering of the exposed thermal pad to a PCB ground plane for effective heat dissipation. With θJB = 7.0°C/W, failure to connect the PowerPAD results in junction temperature exceeding +130°C under full bias (23mA/port), risking reliability degradation. Thermal design must account for worst-case power dissipation: 22.5mA × 12V × 2 ports ≈ 540mW, plus output stage losses during high-power transmission.
How is quiescent current programmed on the THS6226IRHBT?
Quiescent current is set via a 4-bit register (B6–B9) accessed through the 2-pin serial interface (CLK/DATA). Each combination corresponds to a discrete bias level from 7.6mA (ADSL2+ mode) to 23.0mA (Profile 30a mode) in 1.0mA increments. Configuration is validated by hardware parity bit (B10); incorrect programming triggers automatic rejection. The THS6226IRHBT retains settings until power cycle or reprogramming, enabling profile-specific optimization without external DACs or resistors.
THS6226IRHBT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 32-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- VDSL2 Line Driver Amplifier
- Interface:
- Serial
- Number of Circuits:
- 2
- Voltage - Supply:
- 10V ~ 12.5V
- Current - Supply:
- 23.5mA
- Power (Watts):
- -
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-VQFN (5x5)
THS6226IRHBT FAQ
1.How can I place an order for THS6226IRHBT through Aetrix?
Please submit a Request for Quotation (RFQ) for THS6226IRHBT 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 THS6226IRHBT reliable?
The price and inventory of THS6226IRHBT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for THS6226IRHBT is usually 5 days.
3.What payment methods are accepted for THS6226IRHBT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for THS6226IRHBT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for THS6226IRHBT?
THS6226IRHBT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your THS6226IRHBT 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 THS6226IRHBT?
For technical support, including THS6226IRHBT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your THS6226IRHBT requirements.
6.How does Aetrix verify that THS6226IRHBT is sourced from the original manufacturer or authorized distributors?
All THS6226IRHBT 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 THS6226IRHBT meets industry standards.
7.What is the process for return or replacement of THS6226IRHBT?
All THS6226IRHBT units undergo pre-shipment inspection (PSI). If there is an issue with THS6226IRHBT, 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 THS6226IRHBT part is unused and in its original packaging.
Return procedure for THS6226IRHBT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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