THS6204 Datasheet, PDF (1/43 Pages) Texas Instruments – Dual-Port, Differential VDSL2 Line Driver Amplifiers

THS6204 ®
THS6204 ®
THS6204
www.ti.com ................................................................................................................................................... SBOS416C – OCTOBER 2007 – REVISED APRIL 2009
Dual-Port, Differential VDSL2 Line Driver Amplifiers
FEATURES
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•23 Low Power Consumption:
– 21mA/Port Full Bias Mode
– 16.2mA/Port Mid Bias Mode
– 11.2mA/Port Low Bias Mode
– Low-Power Shutdown Mode
– I_ADJ Pin for Variable Bias
• Low Noise:
– 2.5nV/√Hz Voltage Noise
– 17pA/√Hz Inverting Current Noise
– 1.2pA/√Hz Noninverting Current Noise
• Low MTPR Distortion:
– 70dB with +20.5dBm G.993.2—Profile 8b
• –89dBc HD3 (1MHz, 100Ω Differential)
• High Output Current: > 424mA (25Ω Load)
• Wide Output Swing: 43.2V_PP (±12V, 100Ω
Differential)
• Wide Bandwidth: 150MHz (Gain = 10V/V)
• Port-To-Port Separation of 90dB at 1MHz
• PSRR of 50dB at 1MHz for Good Isolation
• Wide Power-Supply Range: 10V to 28V
APPLICATIONS
• Ideal For VDSL2 Systems
• Backward-Compatible with
ADSL/ADSL2+/ADSL2++ Systems
DESCRIPTION
The THS6204 is a dual-port, current-feedback
architecture, differential line driver amplifier system
ideal for xDSL systems. The device is targeted for
use in VDSL2 (very-high-bit-rate digital subscriber
line 2) line driver systems that enable 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
18.1MHz—Profile 30a.
The unique architecture of the THS6204 allows
quiescent current to be minimal while still achieving
very high linearity. Differential distortion, under full
bias conditions, is –89dBc at 1MHz and reduces to
only –73dBc at 10MHz. Fixed multiple bias settings of
the amplifiers allows for 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, an I_ADJ pin is available
to further lower the bias currents.
The wide output swing of 43.2V_PP (100Ω
differentially) with ±12V power supplies, coupled with
over 425mA current drive (25Ω), allows for wide
dynamic headroom, keeping distortion minimal.
The THS6204 is available in a QFN-24 or a
TSSOP-24 PowerPAD™ package.
CODEC
V_IN+
+12V
9.1W
1.33kW
2kW
2.74kW
2.74kW
2kW
1:1.1
+20.5dBm
Line Power
100W
9.1W
CODEC
V_IN-
-12V
Figure 1. Typical VDSL2 Line Driver Circuit
Utilizing One Port of the THS6204
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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PowerPAD is a trademark of Texas Instruments, Incorporated.
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All other trademarks are the property of their respective owners.
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PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2007–2009, Texas Instruments Incorporated