THS3202_16 Datasheet, PDF (18/37 Pages) Texas Instruments – 2-GHz, LOW DISTORTION, DUAL CURRENT-FEEDBACK AMPLIFIERS

THS3202
SLOS242F – SEPTEMBER 2002 – REVISED JANUARY 2010
www.ti.com
The THS3202 amplifier exhibits very good distortion performance and bandwidth with the capability of utilizing up
to 15-V supplies. Their excellent current drive capability of up to 115 mA driving into a 20-Ω load allows for many
versatile applications. One application is driving a twisted pair line (for example, a telephone line). Figure 77
shows a simple circuit for driving a twisted pair differentially.
+6 V
THS3202(a)
V_I+
+
_
0.1 µF
+
10 µF
499 Ω
0.1 µF
210 Ω
R_S
R_Line
2n²
1:n
Telephone Line
R_Line
THS3202(b)
V_I−
+
_
499 Ω
−6 V
0.1 µF
10 µF
+
R_S
R_Line
2n²
Figure 77. Simple Line Driver With THS3202
Due to the large power-supply voltages and the large current drive capability, power dissipation of the amplifier
must not be neglected. To have as much power dissipation as possible in a small package, the THS3202 is
available in an MSOP-8 package (DGK), an MSOP-8 PowerPAD package (DGN), and an SOIC-8 package (D).
Again, power dissipation of the amplifier must be carefully examined or else the amplifiers could become too hot
and performance can be severely degraded. See the Power Dissipation and Thermal Considerations section for
more information on thermal management.
18
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