THS6226 Class H, Fixed Gain VDSL2 Dual Port Low-Power xDSL Line Driver | TI.com

THS6226 (ACTIVE)

Class H, Fixed Gain VDSL2 Dual Port Low-Power xDSL Line Driver

Class H, Fixed Gain VDSL2 Dual Port Low-Power xDSL Line Driver - THS6226
Datasheet
 

Recommended alternative parts

  • THS6214  - The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device.   Dual Port VDSL2 Line Driver Amplifier
  • THS6184  - The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device.   Dual port low power differential xDSL line driver amplifier

Description

The THS6226 is a dual-port, class H, current-feedback architecture, differential line driver amplifier system ideal for xDSL systems. The device is targeted for use in very-high-bit-rate digital subscriber line 2 (VDSL2) line driver systems that enable native DTM signals while supporting greater than +20.5dBm line power (up to 8.5MHz) with good linearity, supporting the G.993.2 VDSL2 8b profile. It is also fast enough to support central-office transmission of +14.5dBm line power up to 30MHz.

The unique architecture of the THS6226 allows quiescent current to be minimal while still achieving very high linearity. Differential distortion, under full bias conditions, is –91dBc at 1MHz and reduces to only –75dBc at 5MHz. Fixed multiple bias settings of the amplifiers offer enhanced power savings for line lengths where the full performance of the amplifier is not required. To allow for even more flexibility and power savings on all profiles, quiescent current is digitally adjustable from 7.6mA to 23mA with a bias current step of 1.0mA. For systems where additional power savings while not transmitting are desired, the THS6226 can be used in its line termination mode to maintain impedance matching.

The wide output swing on +12V power supplies, coupled with excellent current drive, allows for wide dynamic headroom, keeping distortion minimal.

The THS6226 is available in a QFN-32 PowerPAD™ package.

Features

  • Digitally-Adjustable Quiescent Current:
    7.6mA to 23.0mA
  • 1.0mA Bias Current Step
  • Independent Voltage Boost and Main Line Driver Disable
  • Low-Power Line Termination Mode
  • Full Capacitor Recharge: 3ms
  • Low Input Voltage Noise Density:
    6.3 nV/√Hz Input-Referred Voltage Noise
  • Low MTPR Distortion:
    70dB with +19.8dBm G.993.2—Profile 8b
  • –91dBc HD3 (1MHz, 60Ω Differential)
  • High Output Current: (383mA into 60Ω)
  • Wide Output Swing: 40VPP (+12V, 60Ω Differential Load with a 1:1.4 Transformer)
  • Wide Bandwidth: 125MHz
  • Port-to-Port Separation of 90dB at 1MHz
  • PSRR: 70dB at 1MHz for Good Isolation
  • APPLICATIONS
    • Ideal for All VDSL2 Profiles
    • Backwards-Compatible with ADSL/ADSL2+/ADSL2++ Systems

    PowerPAD is a trademark of Texas Instruments, Inc.
    All other trademarks are the property of their respective owners

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    Parametrics Compare all products in High-speed op amps (GBW>=50MHz)

     
    Architecture
    Number of channels (#)
    Total Supply Voltage (Min) (+5V=5, +/-5V=10)
    Total Supply Voltage (Max) (+5V=5, +/-5V=10)
    BW @ Acl (MHz)
    Acl, min spec gain (V/V)
    Slew Rate (Typ) (V/us)
    Vn at flatband (Typ) (nV/rtHz)
    Vn at 1 kHz (Typ) (nV/rtHz)
    Iq per channel (Typ) (mA)
    Vos (offset voltage @ 25 C) (Max) (mV)
    Rail-to-rail
    Features
    Rating
    Operating temperature range (C)
    Package Group
    Package size: mm2:W x L (PKG)
    Input bias current (Max) (pA)
    Offset drift (Typ) (uV/C)
    GBW (Typ) (MHz)
    Output current (Typ) (mA)
    2nd harmonic (dBc)
    3rd harmonic (dBc)
    @ MHz
    THS6226 THS6226A
    Current FB     Current FB    
    2     2    
    10     10    
    30     12.6    
    125     97    
    19     19    
    1500     1750    
    6.3     6.5    
    13     12    
    23.5     24.6    
    5     10    
    No     No    
    Shutdown     Shutdown    
    Catalog     Catalog    
    -40 to 85     -40 to 85    
    VQFN | 32     VQFN | 32    
    32VQFN: 25 mm2: 5 x 5 (VQFN | 32)     32VQFN: 25 mm2: 5 x 5 (VQFN | 32)    
    6200000      
    15     15    
    125     97    
    383     383    
    91     87    
    91     83    
    1     1