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THS9001 Datasheet, PDF (12/17 Pages) Texas Instruments – 50 MHz to 350 MHz CASCADEABLE AMPLIFIER
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THS9001
SLOS426A – NOVEMBER 2003 – REVISED FEBRUARY 2004
www.ti.com
APPLICATION INFORMATION (continued)
Figure 23 shows the THS9001 and Sawtek #854916 SAW filter frequency response along with the frequency
response of the SAW filter alone. The SAW filter has a center frequency of 140 MHz with 10-MHz bandwidth and
8-dB insertion loss. It can be seen that the frequency response with the THS9001 is the same as with the SAW
except for a 15-dB gain. The THS9001 is mounted on the standard EVM with VS = 5 V, R(BIAS) = 237 Ω, and
L(COL) = 470 nH. Note the amplifier does not add artifacts to the signal.
SAW + THS90001
RED =
SAW
THS9001
SAW Only
GREEN =
SAW
140 MHz
140 MHz SAW: Sawtek #854916
Figure 23. Frequency Response of the THS9001 and SAW Filter, and SAW Filter Only
IF(IN) CIN
1 nF
THS9001
1
6
2
5
3
4
VS
R(BIAS)
COUT IF(QUT)
1 nF
L(COL)
C(BYP)
0.1 mF
VS
Figure 24. THS9001 Recommended Circuit (Used for all Tests)
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