LF147, LF347-N

www.ti.com

SNOSBH1D – MAY 1999 – REVISED MARCH 2013

Typical Applications

Figure 23. 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

Attenuation

0

0

0

0

0

0

1

−1 dB

0

1

0

−2 dB

0

1

1

−3 dB

1

0

0

−4 dB

1

0

1

−5 dB

1

1

0

−6 dB

1

1

1

−7 dB

Copyright © 1999–2013, Texas Instruments Incorporated

Submit Documentation Feedback

11

Product Folder Links: LF147 LF347-N