DiscoverCircuits.com, has 28,000+ electronic
circuits, cross-referenced
into 500+ categories. We have searched the web to help you
find quick design ideas.
We make every effort to link to material posted by the designer.
Please let us if you would like us to link to your design.
AC and Op Amp Provide Variable Control Voltage:
12/06/01 EDN Design Ideas / (added 6/06) Early DACs contained standard R-2R ladder networks, and produced a negative output voltage. These early DACs, such as MAX7837/7847 and MAX523, require both positive and negative supply rails to accommodate ir
negative output. With transition to single-supply ICs, however, many modern DACs operate with a single supply rail and an inverted R-2R ladder network. .
Amplifier Requires No DC Bias: 03/16/00 EDN-Design
Ideas / (added 11/05) Intrinsically capacitive transducers and or high-impedance signal sources usually require ac coupling and a buffer amplifier to condition signal for furr processing. Buffers take many forms, but most of m compromise signal quality through
use of external resistors that provide a dc path for input bias current. Recent improvements in op-amp technology allow ac-coupled inputs without need for bias resistors. The new op amps have inputs that operate within supply-voltage span. Some are CMOS,
but many use complementary bipolar transistors. For latter, each input connects....
