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  ±     

SLOS264G − MARCH 2000 − REVISED DECEMBER 2001

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

D Remote Terminal ADSL Line Driver

− Ideal for Both Full Rate ADSL and G.Lite

− Compatible With 1:1 Transformer Ratio

D Low 2.1 pA/√Hz Noninverting Current Noise

− Reduces Noise Feedback Through

Hybrid Into Downstream Channel

D Wide Supply Voltage Range ±5 V to ±15 V

− Ideal for ±12-V Operation

D Wide Output Swing

− 43-Vpp Differential Output Voltage,

= 200 Ω, ±12-V Supply

D High Output Current

− 350 mA (typ)

D High Speed

− 120 MHz (−3 dB, G=1, ±12 V, R

= 25 Ω)

− 1200 V/µs Slew Rate (G = 4, ±12 V)

D Low Distortion, Single-Ended, G = 4

− −79 dBc (250 kHz, 2 V

, 100-Ω load)

D Low Power Shutdown (THS6043)

− 300-µA Total Standby Current

D Thermal Shutdown and Short-Circuit

Protection

D Standard SOIC, SOIC PowerPAD and

TSSOP PowerPAD Package

D Evaluation Module Available

D1 OUT

D1 IN−

D1 IN+

CC−

CC+

D2 OUT

D2 IN−

D2 IN+

THS6042

SOIC (D) AND

SOIC PowerPAD (DDA) PACKAGE

(TOP VIEW)

D1 OUT

D1 IN−

D1 IN+

CC−

N/C

GND

N/C

CC+

D2 OUT

D2 IN−

D2 IN+

N/C

SHUTDOWN

N/C

THS6043

SOIC (D) AND

TSSOP PowerPAD (PWP) PACKAGE

(TOP VIEW)

description

The THS6042/3 is a high-speed line driver ideal for driving signals from the remote terminal to the central office

in asymmetrical digital subscriber line (ADSL) applications. It can operate from a ±12-V supply voltage while

drawing only 8.2 mA of supply current per channel. It offers low –79 dBc total harmonic distortion driving a 100-Ω

load (2 Vpp). The THS6042/3 offers a high 43-Vpp differential output swing across a 200-Ω load from a ±12-V

supply. The THS6043 features a low-power shutdown mode, consuming only 300 µA quiescent current per

channel. The THS6042/3 is packaged in standard SOIC, SOIC PowerPAD, and TSSOP PowerPAD packages.

+12 V

750 Ω

−12 V

750 Ω

−

50 Ω

1:1

15.7 dBm

Delivered

to Telephone

Line

50 Ω

THS6042

Driver 1

THS6042

Driver 2

100 Ω

210 Ω

0.68 µF

Summary of content (44 pages)

PAGE 1
± SLOS264G − MARCH 2000 − REVISED DECEMBER 2001 D Remote Terminal ADSL Line Driver D D D D D High Speed − Ideal for Both Full Rate ADSL and G.Lite − Compatible With 1:1 Transformer Ratio Low 2.
PAGE 2
± SLOS264G − MARCH 2000 − REVISED DECEMBER 2001 AVAILABLE OPTIONS PACKAGED DEVICE EVALUATION MODULES TA SOIC-8 (D) SOIC-8 PowerPAD (DDA) SOIC-14 (D) TSSOP-14 (PWP) 0°C to 70°C THS6042CD THS6042CDDA THS6043CD THS6043CPWP THS6042EVM THS6043EVM −40°C to 85°C THS6042ID THS6042IDDA THS6043ID THS6043IPWP — absolute maximum ratings over operating free-air temperature (unless otherwise noted)† Supply voltage, VCC+ to VCC− . . . . . . . . . . . . . . .
PAGE 3
± SLOS264G − MARCH 2000 − REVISED DECEMBER 2001 recommended operating conditions MIN Supply voltage, VCC+ to VCC− MAX Dual supply ±5 ±15 Single supply 10 30 0 70 −40 85 C-suffix Operating free-air temperature, TA NOM I-suffix UNIT V °C electrical characteristics over recommended operating free-air temperature range, TA = 25°C, VCC = ±12 V, R(FEEDBACK) = 750 Ω, RL = 100 Ω (unless otherwise noted) dynamic performance PARAMETER TEST CONDITIONS M
PAGE 4
± SLOS264G − MARCH 2000 − REVISED DECEMBER 2001 electrical characteristics over recommended operating free-air temperature range, TA = 25°C, VCC = ±12 V, R(FEEDBACK) = 750 Ω, RL = 100 Ω (unless otherwise noted) (continued) dc performance PARAMETER TEST CONDITIONS Input offset voltage VOS VCC = ± 6 V, ± 12 V Differential offset voltage Offset drift − Input bias current IIB VCC = ±6 V, ±12 V + Input bias current Differential input bias current ZOL Open-lo
PAGE 5
± SLOS264G − MARCH 2000 − REVISED DECEMBER 2001 electrical characteristics over recommended operating free-air temperature range, TA = 25°C, VCC = ±12 V, R(FEEDBACK) = 750 Ω, RL = 100 Ω (unless otherwise noted) (continued) power supply PARAMETER TEST CONDITIONS Dual supply VCC ICC PSRR Operating range Single supply MIN TYP ± 16.5 9 33 VCC = ±12 V TA = 25°C TA = full range 8.2 VCC = ±6 V TA = 25°C TA = full range 7.
PAGE 6
± SLOS264G − MARCH 2000 − REVISED DECEMBER 2001 TYPICAL CHARACTERISTICS Table of Graphs FIGURE Small and large signal output vs Frequency vs Output voltage vs Frequency 10, 11, 12, 16, 17, 18 Voltage noise and current noise vs Frequency 19 Harmonic distortion Vn, In Quiescent current vs Free-air temperature 20 V Positive output voltage headroom vs Free-air temperature 21 V Negative output voltage headroom vs Free-air temperature 22 VO zo Outp
PAGE 7
± SLOS264G − MARCH 2000 − REVISED DECEMBER 2001 TYPICAL CHARACTERISTICS SMALL AND LARGE SIGNAL OUTPUT vs FREQUENCY SMALL AND LARGE SIGNAL OUTPUT vs FREQUENCY 24 VO = 8 VPP 18 VCC = ±12 V G=4 Rf = 750 Ω RL = 100 Ω 12 6 Small and Large Signal Output − dB(VPP) Small and Large Signal Output − dB(VPP) 24 VO = 2 VPP 0 −6 VO = 0.5 VPP −12 −18 −24 10 K VO = 0.125 VPP 100 K 1M 10 M 100 M VO = 8 VPP 18 12 VO = 2 VPP 6 0 −6 VO = 0.
PAGE 8
± SLOS264G − MARCH 2000 − REVISED DECEMBER 2001 TYPICAL CHARACTERISTICS SMALL AND LARGE SIGNAL OUTPUT vs FREQUENCY SMALL AND LARGE SIGNAL OUTPUT vs FREQUENCY 24 VO = 8 VPP 18 VCC = ±6 V G=4 Rf = 750 Ω RL = 25 Ω 12 VO = 2 VPP 6 Small and Large Signal Output − dB(VPP) Small and Large Signal Output − dB(VPP) 24 0 VO = 0.5 VPP −6 −12 VO = 0.125 VPP −18 −24 10 K 100 K 1M 10 M 100 M VO = 8 VPP 18 12 VO = 2 VPP 6 0 VO = 0.5 VPP −6 −12 VO = 0.
PAGE 9
± SLOS264G − MARCH 2000 − REVISED DECEMBER 2001 TYPICAL CHARACTERISTICS HARMONIC DISTORTION vs OUTPUT VOLTAGE −70 2nd Order −40 Harmonic Distortion − dBc Harmonic Distortion − dBc −30 VCC = ±5.
PAGE 10
± SLOS264G − MARCH 2000 − REVISED DECEMBER 2001 TYPICAL CHARACTERISTICS HARMONIC DISTORTION vs OUTPUT VOLTAGE HARMONIC DISTORTION vs OUTPUT VOLTAGE −70 −70 2nd Order 2nd Order −75 Harmonic Distortion − dBc Harmonic Distortion − dBc −75 VCC = ±15 V Gain = 4 RL = 25 Ω Rf = 390 Ω f = 250 KHz −80 −85 −90 3rd Order −95 −100 VCC = ±10 V Gain = 4 RL = 25 Ω Rf = 390 Ω f = 250 KHz −80 −85 −90 3rd Order −95 0 2 4 6 8 10 VO − Output Voltage − VPP 12 −1
PAGE 11
± SLOS264G − MARCH 2000 − REVISED DECEMBER 2001 TYPICAL CHARACTERISTICS HARMONIC DISTORTION vs FREQUENCY HARMONIC DISTORTION vs FREQUENCY −30 2nd Order −50 −60 3rd Order −70 VCC = ±10 V Gain = 4 RL = 25 Ω Rf = 390 Ω VO = 2 VPP −80 −90 −100 100 k 2nd Order −40 Harmonic Distortion − dBc Harmonic Distortion − dBc −40 −30 1M 10 M f − Frequency − Hz −50 −60 3rd Order −70 VCC = ±5.
PAGE 12
± SLOS264G − MARCH 2000 − REVISED DECEMBER 2001 TYPICAL CHARACTERISTICS POSITIVE OUTPUT VOLTAGE HEADROOM vs FREE-AIR TEMPERATURE NEGATIVE OUTPUT VOLTAGE HEADROOM vs FREE-AIR TEMPERATURE 1.35 −1.05 1.3 Negative Output Voltage Headroom − V Positive Output Voltage Headroom − V (+VCC − VO) VCC = ±6 V, RL = 25 Ω 1.25 VCC = ±12 V, RL = 100 Ω 1.2 1.15 VCC = ±6 V, RL = 100 Ω 1.1 1.
PAGE 13
± SLOS264G − MARCH 2000 − REVISED DECEMBER 2001 TYPICAL CHARACTERISTICS INPUT OFFSET VOLTAGE AND DIFFERENTIAL INPUT OFFSET VOLTAGE vs FREE-AIR TEMPERATURE QUIESCENT CURRENT IN SHUTDOWN MODE vs FREE-AIR TEMPERATURE 0.4 0.5 12 VCC = ± 12 V 0.35 0.3 VCC = ± 6 V 0.25 0.2 0.15 −40 −20 0 20 40 60 80 TA − Free-Air Temperature − °C 11 0.4 10 0.3 0.
PAGE 14
± SLOS264G − MARCH 2000 − REVISED DECEMBER 2001 TYPICAL CHARACTERISTICS SLEW RATE vs OUTPUT VOLTAGE STEP CROSSTALK vs FREQUENCY 1800 Rf = 390 Ω RL = 25 Ω −20 −40 Rf = 430 Ω RL = 100 Ω 800 400 −80 200 0 100 M 0 2 SHUTDOWN RESPONSE TRANSIMPEDANCE AND PHASE vs FREQUENCY 140 V(SHDN) 5 120 −1 4 −3 3 −5 2 −7 1 VO 0 Gain = 8 VCC +12 V Rf = 750 Ω RL = 100 Ω −1 12 8 t − Time − µs 16 −9 −11 −13 20 16 0 Transimpedance −45 100 −90 80 Phase 60
PAGE 15
± SLOS264G − MARCH 2000 − REVISED DECEMBER 2001 TYPICAL CHARACTERISTICS OVERDRIVE RECOVERY 16 16 Gain = −8 VCC = ±12 V Rf = 750 Ω RL = 100 Ω 12 8 1 8 VI Gain = 8 VCC = ±12 V Rf = 750 Ω RL = 100 Ω 1.5 VO 4 0.5 0 0 −4 −0.5 −8 −1 VI − Input Voltage − V VO − Output Voltage − V 12 4 0.5 0 0 −4 −0.5 VO −8 −1 −1.
PAGE 16
± SLOS264G − MARCH 2000 − REVISED DECEMBER 2001 APPLICATION INFORMATION The THS6042/3 contain two independent operational amplifiers. These amplifiers are current feedback topology amplifiers made for high-speed operation. They have been specifically designed to deliver the full power requirements of ADSL and therefore can deliver output currents of at least 230 mA at full output voltage.
PAGE 17
± SLOS264G − MARCH 2000 − REVISED DECEMBER 2001 APPLICATION INFORMATION ADSL (continued) One problem in the ADSL CPE area is noise. It is imperative that signals received off the telephone line have as high a signal-to-noise ratio (SNR) as possible. This is because of the numerous sources of interference on the line. The best way to accomplish this high SNR is to have a low-noise receiver such as the THS6062 or OPA2822 on the front-end.
PAGE 18
± SLOS264G − MARCH 2000 − REVISED DECEMBER 2001 APPLICATION INFORMATION ADSL (continued) +12 V THS6042 Driver 1 VI+ 0.1 µF + 10 µF 50 Ω + _ R(SNUB) 1:1 750 Ω 100 Ω Telephone Line C(SNUB) 1 µF 210 Ω 499 Ω +12 V 0.68 µF 1 kΩ THS6042 Driver 2 VI− 0.1 µF 50 Ω + _ 499 Ω − + THS6062 Receiver 1 750 Ω 0.1 µF 10 µF VO+ 499 Ω + −12 V 1 kΩ 499 Ω − + VO− THS6062 Receiver 2 −12 V 0.1 µF Figure 37.
PAGE 19
± SLOS264G − MARCH 2000 − REVISED DECEMBER 2001 APPLICATION INFORMATION noise calculations and noise figure Noise can cause errors on very small signals. This is especially true for the amplifying small signals. The noise model for current feedback amplifiers (CFB) is the same as voltage feedback amplifiers (VFB).
PAGE 20
± SLOS264G − MARCH 2000 − REVISED DECEMBER 2001 APPLICATION INFORMATION noise calculations and noise figure (continued) This brings up another noise measurement usually preferred in RF applications, the noise figure (NF). Noise figure is a measure of noise degradation caused by the amplifier. The value of the source resistance must be defined and is typically 50 Ω in RF applications.
PAGE 21
± SLOS264G − MARCH 2000 − REVISED DECEMBER 2001 APPLICATION INFORMATION device protection features The THS6042/3 have two built-in features that protect the devices against improper operation. The first protection mechanism is output current limiting. Should the output become shorted to ground, the output current is automatically limited to the value given in the data sheet.
PAGE 22
± SLOS264G − MARCH 2000 − REVISED DECEMBER 2001 APPLICATION INFORMATION PCB design considerations Proper PCB design techniques in two areas are important to assure proper operation of the THS6042/3. These areas are high-speed layout techniques and thermal-management techniques. Because the devices are high-speed parts, the following guidelines are recommended.
PAGE 23
± SLOS264G − MARCH 2000 − REVISED DECEMBER 2001 APPLICATION INFORMATION PCB design considerations (continued) D Proper power supply decoupling − Use a minimum of a 6.8-µF tantalum capacitor in parallel with a 0.1-µF ceramic capacitor on each supply terminal. It may be possible to share the tantalum among several amplifiers depending on the application, but a 0.1-µF ceramic capacitor should always be used on the supply terminal of every amplifier.
PAGE 24
± SLOS264G − MARCH 2000 − REVISED DECEMBER 2001 APPLICATION INFORMATION PCB design considerations (continued) 6. Apply solder paste to the exposed thermal pad area and all of the operational amplifier terminals. 7. With these preparatory steps in place, the THS6042/3 is simply placed in position and run through the solder reflow operation as any standard surface-mount component. This results in a part that is properly installed.
PAGE 25
± SLOS264G − MARCH 2000 − REVISED DECEMBER 2001 APPLICATION INFORMATION PCB design considerations (continued) The next consideration is the package constraints. The two sources of heat within an amplifier are quiescent power and output power. The designer should never forget about the quiescent heat generated within the device, especially multiamplifier devices.
PAGE 26
± SLOS264G − MARCH 2000 − REVISED DECEMBER 2001 APPLICATION INFORMATION recommended feedback and gain resistor values As with all current feedback amplifiers, the bandwidth of the THS6042/3 is an inversely proportional function of the value of the feedback resistor. This can be seen from Figures 1 to 6. The recommended resistors for the optimum frequency response are shown in Table 1.
PAGE 27
± SLOS264G − MARCH 2000 − REVISED DECEMBER 2001 APPLICATION INFORMATION shutdown control The THS6043 is essentially the same amplifier as the THS6042. The only difference is the added flexibility of a shutdown circuit. When the shutdown pin signal is low, the THS6043 is active. But, when a shutdown pin is high (≥ 2 V), the THS6043 is turned off. The shutdown logic is not latched and should always have a signal applied to it.
PAGE 28
± SLOS264G − MARCH 2000 − REVISED DECEMBER 2001 APPLICATION INFORMATION driving a capacitive load Driving capacitive loads with high performance amplifiers is not a problem as long as certain precautions are taken. The first is to realize that the THS6042/3 has been internally compensated to maximize its bandwidth and slew rate performance.
PAGE 29
± SLOS264G − MARCH 2000 − REVISED DECEMBER 2001 APPLICATION INFORMATION general configurations (continued) If a multiple pole filter is required, the use of a Sallen-Key filter can work very well with CFB amplifiers. This is because the filtering elements are not in the negative feedback loop and stability is not compromised. Because of their high slew-rates and high bandwidths, CFB amplifiers can create very accurate signals and help minimize distortion.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 31-Oct-2013 (2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. TBD: The Pb-Free/Green conversion plan has not been defined.
PAGE 32
PACKAGE MATERIALS INFORMATION www.ti.com 12-Aug-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device THS6043IPWPR Package Package Pins Type Drawing SPQ HTSSOP 2000 PWP 14 Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) 330.0 12.4 Pack Materials-Page 1 6.9 B0 (mm) K0 (mm) P1 (mm) 5.6 1.6 8.0 W Pin1 (mm) Quadrant 12.
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PACKAGE MATERIALS INFORMATION www.ti.com 12-Aug-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) THS6043IPWPR HTSSOP PWP 14 2000 367.0 367.0 35.
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