Wide Bandwidth Operational Transconductance Amp and Buffer 8-SOIC
PDF, 81 Kb, File published: Sep 27, 2000
Fiber optic transmission is assuming an increasingly important role in systems for wide-band analog signals and digital signals with high data rates. Although the number of applications for digital networks and telecommunications systems is skyrocketing, analog transmission is still vital to many applications. Analog systems with bandwidths of up to 150MHz are used for wide-band RGB signal distrib
PDF, 114 Kb, File published: Sep 27, 2000
Signal frequency bandwidth limitation, fast pulse shaping, separation between telecommunications signals, and suppression of unwanted carrier and disturbance frequencies are among the most important jobs of filter circuits. While active filters with operational amplifiers and switched capacitor filters are used for lower frequency applications, passive filter versions dominate the application spec
PDF, 107 Kb, File published: Oct 2, 2000
In analog technology, important advances are being made in video operational amplifiers, both in processing and in circuitry. The following article is concerned exclusively with explaining these key topics and the new circuit designs.
PDF, 84 Kb, File published: Oct 2, 2000
The monolithic integrated circuit OPA660 uses the Diamond structure to act as an ideal transistor. However, this circuit has the advantage that it avoids the biasing circuits and eliminates the need for an offset voltage compensation network. With this element, peripheral components are reduced to the essential minimum. Using the DC-coupled wideband voltage amplifier and buffer, conventional and n
PDF, 160 Kb, File published: Sep 27, 2000
With the increasing use of current-feedback amplifiers, the Diamond Structure has come to play a key role in today's analog circuit technology. Two new macro elements that function in this structure are the Diamond Transistor and its abridged version, the Diamond Buffer. These elements can be used for both voltage and current control of analog signals up to several 100MHz. The OPA660 combines both
PDF, 42 Kb, File published: Sep 27, 2000
The signal-to-noise ratio and bandwidth of the combination of the ACF2101 dual, switched integrator and a low-level input current is exceptional when compared to the performance of a classical transimpedance amplifier. To further improve the ACF2101 signal-to-noise ratio, a resistor can be added in series with the input sensor.
PDF, 62 Kb, File published: Oct 2, 2000
Coax cables with a typical impedance of 50О© or 75О© are used in many applications to ensure signal fidelity, and high-speed line drivers have the often difficult job of transmitting signals over these cables or over twisted pair lines. The most common way to drive coax cables is to use driver amplifiers with low-impedance voltage output, which operate with either voltage or current feed
PDF, 256 Kb, Revision: A, File published: Jan 17, 2005
As system bandwidths have increased an accurate estimate of the noise contribution for each element in the signal channel has become increasingly important. Many designers are not however particularly comfortable with the calculations required to predict the total noise for an op amp or in the conversions between the different descriptions of noise. Considerable inconsistency between manufactu
PDF, 68 Kb, File published: Oct 2, 2000
The macromodel for the Diamond Transistor OPA660 gives an example of the structure and performance of these new Spice models.
PDF, 37 Kb, File published: Oct 2, 2000
The OPA660 is a unique solution to many high-speed design problems. It offers the high-speed and wide-bandwidth of discrete transistors necessary for RF, IF, and video circuitry while maintaining the simplicity, reliability,and ease-of-use of a monolithic, integrated circuit. For applications where neither an op amp nor a discrete transistor quite fit, the OPA660 may be exactly what your're lookin
PDF, 150 Kb, File published: Oct 2, 2000
Multiplication of analog signals has long been one of the most important nonlinear functions of analog circuit technology. Many signal sources, however, such as CCD sensors, pin diodes, or antennas, deliver weak, oscillating, and simultaneously wide-band signals. But now a new multiplication method is available. Used as a wide-bandwidth Automatic Gain Control (AGC) application circuit, the integra
PDF, 48 Kb, File published: Sep 27, 2000
The OPA660 makes it easy to design a 400MHz differential amplifier offering ?60dB common-mode rejection at a 1MHz frequency. This amplifier uses an open-loop amplifier structure with two identical high-impedance inputs and no feedback. The parameters such as wide bandwidth, stable operation, and excellent pulse processing, common-mode rejection, and harmonic distortion let the performance speak fo
