LF147 Datasheet, PDF (9/13 Pages) National Semiconductor (TI) – Wide Bandwidth Quad JFET Input Operational Amplifiers

Typical Applications
Digitally Selectable Precision Attenuator
All resistors 1% tolerance
• Accuracy of better than 0.4% with standard 1% value resistors
• No offset adjustment necessary
• Expandable to any number of stages
• Very high input impedance
A1 A2 A3
000
001
010
011
100
101
110
111
V_O
Attenuation
0
−1 dB
−2 dB
−3 dB
−4 dB
−5 dB
−6 dB
−7 dB
DS005647-10
9
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