Datasheet LT1194 (Analog Devices) - 10

LT1194
U U W U APPLICATIO S I FOR ATIO Murphy Circuits
Other precautions include: There are several precautions the user should take when 1. Use a ground plane (see Design Note 50, High Fre- using the LT1194 in order to realize its full capability. quency Amplifier Evaluation Board). Although the LT1194 can drive a 50pF capacitive load, 2. Do not use high source impedances. The input capaci- isolating the capacitance with 10Ω can be helpful. Precau- tance of 2pF, and R tions primarily have to do with driving large capacitive S = 10k, for instance, will give an 8MHz – 3dB bandwidth. loads. 3. PC board socket may reduce stability.
Driving Capacitive Load Driving Capacitive Load
LT1194 • TA12 LT1194 • TA13 LT1194 IN DEMO BOARD, CL = 50pF LT1194 IN DEMO BOARD, CL = 50pF WITH 10Ω ISOLATING RESISTOR 5V 5V 3 3 7 7 + + COAX 5 6 5 6 LT1194 LT1194 2 – 2 – 4 4 1X SCOPE 8 8 1 1 PROBE –5V –5V LT1194 • TA14
An Unterminated Cable is A 1X Scope Probe is a a Large Capacitive Load Large Capacitive Load
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