|
Diff Amp with Current Mirror - In an audio input differential stage, you often see
the simple collector resistor replaced with a current mirror. Why bother? The payoff
is two fold. First, you get twice the gain and current output, typically a good thing
for an audio amp. And second...(spice design added 02/09) |
|
Difference Amplifier Measures High Voltages - 04/28/05 EDN-Design Ideas Circuit
overcomes self-induced error sources in high voltage measurement. (design idea added
5/05) |
|
Difference Amplifier uses Digital Potentiometers - 05/30/02 EDN-Design Ideas /
(added 12/04) You sometimes need to measure a small signal in the presence of a large
common-mode signal. Traditional instrumentation amplifiers that use two or three op
amps in their internal structure find common use in these applications. The circuit in
Figure 1 presents an alternative approach that is useful when low cost and low drift
are important, but when.... |
|
Differential Amp Drives High Speed ADC - 06/21/01 EDN-Design Ideas / (added 5/03)
The schematic in Figure 1 is the discrete-element version of an A/D-converter drive
circuit. The circuit converts a single-ended input to a differential output. The ADC's
reference voltage determines the common-mode range of the differential outputs. The
circuit contains two AD9631 amplifiers—one connected in noninverting mode, and the
other connected in....(design idea added 05/04/03) |
|
Differential Amp Needs No Power Source - 05/02/02 EDN-Design Ideas A
true-differential, power-source-free, high-input-impedance amplifier with bipolar
output would present distinct advantages in remote devices. Such an amplifier, with
its bipolar output, would be a better choice than a unipolar, 4to 20-mA device. It
would also improve on common-mode performance. In Figure 1, a Maxim MAX319 analog
switch....(design idea added 12/04) |
|
Differential Amplifier - ...(spice design added 02/09) |
|
Differential Amplifiers Simplify Balanced Signal Designs - DN333 Design Notes
(Linear Technology) (app note added 1/06) |
|
Differential Integrator with Frequency Controlled Gain - Circuit Ideas for
Designers Application Notes Advanced Linear Devices, Inc. (app note added 6/06) |
|
Discrete Differential Amplifier - Circuit Ideas for Designers Application Notes
Advanced Linear Devices, Inc. (app note added 6/06) |
|
Easy-To-Use Differential Amplifiers Simplify Balanced Signal Designs - DN333
Design Notes (Linear Technology) (app note added 1/06) |
