THS3202_16 Datasheet, PDF (25/37 Pages) Texas Instruments – 2-GHz, LOW DISTORTION, DUAL CURRENT-FEEDBACK AMPLIFIERS

THS3202
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R_g
R_f
−
THS320x
+
R1
V_I
R_A
R2
C1
SLOS242F – SEPTEMBER 2002 – REVISED JANUARY 2010
For Stable Operation:
R2
R1 || R_A ^≥
R_f
R_g
V_O
( ) ^{VO ≅ VI}
1 + ^Rf
R_g
sR1C1
Figure 86. Noninverting CFB Integrator
The THS3202 may also be employed as a very good video distribution amplifier. One characteristic of distribution
amplifiers is the fact that the differential phase (DP) and the differential gain (DG) are compromised as the
number of lines increase and the closed-loop gain increases. Be sure to use termination resistors throughout the
distribution system to minimize reflections and capacitive loading.
R_g
R_f
75-Ω Transmission Line
−
75 Ω
V_I
+
V_O1
THS3202
75 Ω
N Lines
75 Ω
75 Ω
75 Ω
V_ON
Figure 87. Video Distribution Amplifier Application
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