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
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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

    Parametrics

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    Part number Order Number of channels (#) Architecture 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) 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 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 Order now 2     Current FB     10     30     125     19     6.3     13     23.5     5     No     Shutdown     -40 to 85     VQFN | 32     32VQFN: 25 mm2: 5 x 5 (VQFN | 32)     6200000     15     125     383     91     91     1    
    THS6226A Order now 2     Current FB     10     12.6     97     19     6.5     12     24.6     10     No     Shutdown     -40 to 85     VQFN | 32     32VQFN: 25 mm2: 5 x 5 (VQFN | 32)       15     97     383     87     83     1