Datasheet

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THS6214

FEATURES DESCRIPTION

APPLICATIONS

+12V

ADJ

100W

THS6214

www.ti.com

....................................................................................................................................................................................................... SBOS431 – MAY 2009

Dual-Port, Differential, VDSL2 Line Driver Amplifiers

• Low Power Consumption:

The THS6214 is a dual-port, current-feedback

architecture, differential line driver amplifier system

– 21mA/Port (Full Bias Mode)

ideal for xDSL systems. The device is targeted for

– 16.2mA/Port (Mid Bias Mode)

use in VDSL2 (very-high-bit-rate digital subscriber

– 11.2mA/Port (Low Bias Mode)

line 2) line driver systems that enable greater than

– Low-Power Shutdown Mode +14.5dBm line power, supporting the G.993.2 VDSL2

17a profile. It is also fast enough to support

– I

ADJ

Pin for Variable Bias

central-office transmissions of +14.5dBm line power

• Low Noise:

up to 30MHz.

– 2.7nV/ √ Hz Voltage Noise

The unique architecture of the THS6214 uses

– 17pA/ √ Hz Inverting Current Noise

minimal quiescent current while still achieving very

– 1.2pA/ √ Hz Noninverting Current Noise high linearity. Differential distortion, under full bias

conditions, is – 93dBc at 1MHz and reduces to only

• Low MTPR Distortion:

– 73dBc at 10MHz. Fixed multiple bias settings of the

– 70dB with +20.5dBm G.993.2 — Profile 8b

amplifiers allow for enhanced power savings for line

• – 93dBc HD3 (1MHz, 100 Ω Differential)

lengths where the full performance of the amplifier is

not required. To allow for even more flexibility and

• High Output Current: > 416mA (25 Ω Load)

power savings, an adjustable current pin (I

ADJ

) is

• Wide Output Swing: 43.2V

( ± 12V, 100 Ω

available to further lower the bias currents.

Differential Load)

The wide output swing of 43.2V

(100 Ω differential

• Wide Bandwidth: 150MHz (G

DIFF

= 10V/V)

load) with ± 12V power supplies, coupled with over

• PSRR: 50dB at 1MHz for Good Isolation

416mA current drive (25 Ω load), allows for wide

dynamic headroom, keeping distortion minimal.

• Wide Power-Supply Range: 10V to 28V

The THS6214 is available in a QFN-24 or a

TSSOP-24 PowerPAD™ package.

• Ideal For VDSL2 Systems

• Backwards-Compatible with

ADSL/ADSL2+/ADSL2++ Systems

Figure 1. Typical VDSL2 Line Driver Circuit Using One Port of the THS6214

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.

2 PowerPAD is a trademark of Texas Instruments, Inc.

3 All other trademarks are the property of their respective owners.

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.

Summary of content (41 pages)

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THS6214 TH S6 214 TH S6 21 4 www.ti.com ....................................................................................................................................................................................................... SBOS431 – MAY 2009 Dual-Port, Differential, VDSL2 Line Driver Amplifiers FEATURES DESCRIPTION 1 • Low Power Consumption: – 21mA/Port (Full Bias Mode) – 16.2mA/Port (Mid Bias Mode) – 11.
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THS6214 SBOS431 – MAY 2009 ....................................................................................................................................................................................................... www.ti.com This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.
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THS6214 www.ti.com .......................................................................................................................................................................................................
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THS6214 SBOS431 – MAY 2009 ....................................................................................................................................................................................................... www.ti.com ELECTRICAL CHARACTERISTICS: VS = ±12V At TA = +25°C, GDIFF = +10V/V with RL = 100Ω differential load, RADJ = 0Ω, active impedance circuit configuration, and full bias, unless otherwise noted. Each port is independently tested. Boldface values are 100% tested at +25°C.
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THS6214 www.ti.com ....................................................................................................................................................................................................... SBOS431 – MAY 2009 ELECTRICAL CHARACTERISTICS: VS = ±12V (continued) At TA = +25°C, GDIFF = +10V/V with RL = 100Ω differential load, RADJ = 0Ω, active impedance circuit configuration, and full bias, unless otherwise noted. Each port is independently tested.
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THS6214 SBOS431 – MAY 2009 ....................................................................................................................................................................................................... www.ti.com ELECTRICAL CHARACTERISTICS: VS = ±12V (continued) At TA = +25°C, GDIFF = +10V/V with RL = 100Ω differential load, RADJ = 0Ω, active impedance circuit configuration, and full bias, unless otherwise noted. Each port is independently tested.
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THS6214 www.ti.com ....................................................................................................................................................................................................... SBOS431 – MAY 2009 ELECTRICAL CHARACTERISTICS: VS = ±6V At TA = +25°C, GDIFF = +5V/V with RL = 100Ω differential load, RADJ = 0Ω, active impedance circuit configuration, and full bias, unless otherwise noted. Each port is independently tested.
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THS6214 SBOS431 – MAY 2009 ....................................................................................................................................................................................................... www.ti.com ELECTRICAL CHARACTERISTICS: VS = ±6V (continued) At TA = +25°C, GDIFF = +5V/V with RL = 100Ω differential load, RADJ = 0Ω, active impedance circuit configuration, and full bias, unless otherwise noted. Each port is independently tested.
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THS6214 www.ti.com ....................................................................................................................................................................................................... SBOS431 – MAY 2009 ELECTRICAL CHARACTERISTICS: VS = ±6V (continued) At TA = +25°C, GDIFF = +5V/V with RL = 100Ω differential load, RADJ = 0Ω, active impedance circuit configuration, and full bias, unless otherwise noted. Each port is independently tested.
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THS6214 SBOS431 – MAY 2009 ....................................................................................................................................................................................................... www.ti.com TYPICAL CHARACTERISTICS: VS = ±12V, Full Bias At TA = +25°C, GDIFF = +10V/V, GCM = 1V/V, RADJ = 0Ω, RF = 1.24kΩ, and RL = 100Ω, unless otherwise noted. SMALL-SIGNAL FREQUENCY RESPONSE vs BIAS MODE SMALL-SIGNAL FREQUENCY RESPONSE 3 0 -3 -6 GDIFF = 10V/V RF = 1.
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THS6214 www.ti.com ....................................................................................................................................................................................................... SBOS431 – MAY 2009 TYPICAL CHARACTERISTICS: VS = ±12V, Full Bias (continued) At TA = +25°C, GDIFF = +10V/V, GCM = 1V/V, RADJ = 0Ω, RF = 1.24kΩ, and RL = 100Ω, unless otherwise noted.
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THS6214 SBOS431 – MAY 2009 ....................................................................................................................................................................................................... www.ti.com TYPICAL CHARACTERISTICS: VS = ±12V, Full Bias (continued) At TA = +25°C, GDIFF = +10V/V, GCM = 1V/V, RADJ = 0Ω, RF = 1.24kΩ, and RL = 100Ω, unless otherwise noted.
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THS6214 www.ti.com ....................................................................................................................................................................................................... SBOS431 – MAY 2009 TYPICAL CHARACTERISTICS: VS = ±12V, Mid Bias At TA = +25°C, GDIFF = +10V/V, GCM = 1V/V, RADJ = 0Ω, RF = 1.24kΩ, and RL = 100Ω, unless otherwise noted. SMALL-SIGNAL FREQUENCY RESPONSE LARGE-SIGNAL FREQUENCY RESPONSE 3 3 GDIFF = 5V/V RF = 1.
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THS6214 SBOS431 – MAY 2009 ....................................................................................................................................................................................................... www.ti.com TYPICAL CHARACTERISTICS: VS = ±12V, Mid Bias (continued) At TA = +25°C, GDIFF = +10V/V, GCM = 1V/V, RADJ = 0Ω, RF = 1.24kΩ, and RL = 100Ω, unless otherwise noted.
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THS6214 www.ti.com ....................................................................................................................................................................................................... SBOS431 – MAY 2009 TYPICAL CHARACTERISTICS: VS = ±12V, Low Bias At TA = +25°C, GDIFF = +10V/V, GCM = 1V/V, RADJ = 0Ω, RF = 1.24kΩ, and RL = 100Ω, unless otherwise noted. SMALL-SIGNAL FREQUENCY RESPONSE LARGE-SIGNAL FREQUENCY RESPONSE 3 6 GDIFF = 5V/V RF = 1.
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THS6214 SBOS431 – MAY 2009 ....................................................................................................................................................................................................... www.ti.com TYPICAL CHARACTERISTICS: VS = ±12V, Low Bias (continued) At TA = +25°C, GDIFF = +10V/V, GCM = 1V/V, RADJ = 0Ω, RF = 1.24kΩ, and RL = 100Ω, unless otherwise noted.
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THS6214 www.ti.com ....................................................................................................................................................................................................... SBOS431 – MAY 2009 TYPICAL CHARACTERISTICS: VS = ±6V, Full Bias At TA = +25°C, GDIFF = +5V/V, GCM = 1V/V, RADJ = 0Ω, RF = 1.82kΩ, and RL = 100Ω, unless otherwise noted.
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THS6214 SBOS431 – MAY 2009 ....................................................................................................................................................................................................... www.ti.com TYPICAL CHARACTERISTICS: VS = ±6V, Full Bias (continued) At TA = +25°C, GDIFF = +5V/V, GCM = 1V/V, RADJ = 0Ω, RF = 1.82kΩ, and RL = 100Ω, unless otherwise noted.
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THS6214 www.ti.com ....................................................................................................................................................................................................... SBOS431 – MAY 2009 TYPICAL CHARACTERISTICS: VS = ±6V, Full Bias (continued) At TA = +25°C, GDIFF = +5V/V, GCM = 1V/V, RADJ = 0Ω, RF = 1.82kΩ, and RL = 100Ω, unless otherwise noted.
PAGE 20
THS6214 SBOS431 – MAY 2009 ....................................................................................................................................................................................................... www.ti.com TYPICAL CHARACTERISTICS: VS = ±6V, Mid Bias At TA = +25°C, GDIFF = +5V/V, GCM = 1V/V, RADJ = 0Ω, RF = 1.82kΩ, and RL = 100Ω, unless otherwise noted. SMALL-SIGNAL FREQUENCY RESPONSE 3 GDIFF = 5V/V RF = 1.
PAGE 21
THS6214 www.ti.com ....................................................................................................................................................................................................... SBOS431 – MAY 2009 TYPICAL CHARACTERISTICS: VS = ±6V, Mid Bias (continued) At TA = +25°C, GDIFF = +5V/V, GCM = 1V/V, RADJ = 0Ω, RF = 1.82kΩ, and RL = 100Ω, unless otherwise noted.
PAGE 22
THS6214 SBOS431 – MAY 2009 ....................................................................................................................................................................................................... www.ti.com TYPICAL CHARACTERISTICS: VS = ±6V, Low Bias At TA = +25°C, GDIFF = +5V/V, GCM = 1V/V, RADJ = 0Ω, RF = 1.82kΩ, and RL = 100Ω, unless otherwise noted. SMALL-SIGNAL FREQUENCY RESPONSE LARGE-SIGNAL FREQUENCY RESPONSE 6 6 GDIFF = 5V/V RF = 1.
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THS6214 www.ti.com ....................................................................................................................................................................................................... SBOS431 – MAY 2009 TYPICAL CHARACTERISTICS: VS = ±6V, Low Bias (continued) At TA = +25°C, GDIFF = +5V/V, GCM = 1V/V, RADJ = 0Ω, RF = 1.82kΩ, and RL = 100Ω, unless otherwise noted.
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THS6214 SBOS431 – MAY 2009 ....................................................................................................................................................................................................... www.ti.com APPLICATION INFORMATION WIDEBAND CURRENT-FEEDBACK OPERATION The THS6214 provides the exceptional ac performance of a wideband current-feedback op amp with a highly linear, high-power output stage. Requiring only 21mA/port quiescent current, the THS6214 swings to within 1.
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THS6214 www.ti.com ....................................................................................................................................................................................................... SBOS431 – MAY 2009 DUAL-SUPPLY VDSL DOWNSTREAM Figure 82 shows an example of a dual-supply VDSL downstream driver.
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THS6214 SBOS431 – MAY 2009 ....................................................................................................................................................................................................... www.ti.com As this turns ratio changes, the minimum allowed supply voltage changes along with it. The peak current in the amplifier output is given by: 2 ´ VLPP 1 1 ±IP = ´ ´ n 2 4RM (9) V1, V2, R1, and R2 are given in Table 2 for ±12V operation. Table 2.
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THS6214 www.ti.com ....................................................................................................................................................................................................... SBOS431 – MAY 2009 TOTAL DRIVER POWER FOR xDSL APPLICATIONS The total internal power dissipation for the THS6214 in an xDSL line driver application is the sum of the quiescent power and the output stage power.
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THS6214 SBOS431 – MAY 2009 ....................................................................................................................................................................................................... www.ti.com resistor is shorted to ground. However, shorting the output pin directly to the adjacent positive power-supply pin (24-pin package), in most cases, destroys the amplifier.
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THS6214 www.ti.com ....................................................................................................................................................................................................... SBOS431 – MAY 2009 DIFFERENTIAL NOISE PERFORMANCE The THS6214 is designed to be used as a differential driver in xDSL applications. Therefore, it is important to analyze the noise in such a configuration. Figure 87 shows the op amp noise model for the differential configuration.
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THS6214 SBOS431 – MAY 2009 ....................................................................................................................................................................................................... www.ti.com BOARD LAYOUT GUIDELINES Achieving optimum performance with a high-frequency amplifier such as the THS6214 requires careful attention to board layout parasitic and external component types.
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THS6214 www.ti.com ....................................................................................................................................................................................................... SBOS431 – MAY 2009 e) Socketing a high-speed part such as the THS6214 is not recommended.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) THS6214IPWPR HTSSOP PWP 24 2000 330.0 16.4 THS6214IRHFR VQFN RHF 24 3000 330.0 THS6214IRHFT VQFN RHF 24 250 180.0 6.95 8.3 1.6 8.0 16.0 Q1 12.4 4.3 5.3 1.3 8.0 12.0 Q1 12.4 4.3 5.3 1.3 8.0 12.
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PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) THS6214IPWPR HTSSOP PWP 24 2000 367.0 367.0 38.0 THS6214IRHFR VQFN RHF 24 3000 367.0 367.0 35.0 THS6214IRHFT VQFN RHF 24 250 210.0 185.0 35.
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