This circuit is known as a Wien Bridge Oscillator. It has both a positive and negative feedback loop. For oscillations to occur, the net feedback must be positive. The circuit oscillates at a frequency determined by the R C time constant at a frequency f= ½ x 1/(3.1416 x R x C) and produces a sinusoidal waveform at the output VOUT. For many situations, this oscillator is used as a sine wave generator. Using a rail to rail operational amplifier, the sine wave generated at VOUT is also rail to r

The ALD4211/ALD4212/ALD4213 are quad SPST CMOS analog switches specifically designed for low voltage, high speed applications where 0.2pC charge injection, 200pf sampling capacitor, and picoamp leakage current are important analog switch operating characteristics. These analog switches feature fast switching, low on-resistance and micropower consumption.

This current to voltage converter rely on the very high input impedance of the operational amplifier. The input current (I) is forced through feedback resistor (RF), and generates an output voltage equal to ("I x RF). This output voltage is valid for output voltages from rail to rail, namely, from "2.5V to +2.5V in this example.

The ALD2704 is a dual monolithic operational amplifier with MOSFET input that has rail-to-rail input and output voltage ranges. The input voltage range and output voltage range are very close to the positive and negative power supply voltages. Typically the input voltage can be beyond positive power supply voltage V + or the negative power supply voltage V- by up to 300mV. The output voltage swings to within 60mV of either positive or negative power supply voltages at rated load.

This circuit is an ultra low supply voltage EPAD MOSFET RC oscillator operating at less than 1V. In this circuit U1A, U1B and U1C form the basic three-stage oscillator with feedback resistor and capacitor network R4, COSC and R5. The oscillator operates in low frequency ranging from a few hertz to kilohertz. The output is tapped and buffered with U1D as an output buffer stage. Power to the output stage is supplied by VL. V1 can be either at V+ or at a different value, depending on the desired ou

The ALD1107/ALD1117 are monolithic quad/dual P-channel enhancement mode matched MOSFET transistor arrays intended for a broad range of precision analog applications. The ALD1107/ALD1117 offer high input impedance and negative current temperature coefficient. The transistor pairs are matched for minimum offset voltage and differential thermal response, and they are designed for precision analog switching and amplifying applications in +2V to +12V systems where low input bias current, low input ca

The ALD1712 is a monolithic precision operational amplifier intended primarily for a wide range of analog applications in +5V single power supply and ±5V dual power supply systems as well as +6V to 12V battery operated systems. All device characteristics are specified for +5V single supply or ±2.5V dual supply systems. It is manufactured with Advanced Linear Devices' enhanced ACMOS silicon gate CMOS process and is available as a standard cell in ALD's ASIC "Function-Sp

This current source uses a reference current and produces an output current that has substantially higher dynamic output impedance, particularly for low current levels of less than 100uA. This current source buffers the reference current and produces a constant current for a wide voltage range. This current source utilizes two pairs of N channel matched pair MOSFETs connected in a cascode configuration. The bottom MOSFET pair must be a matched pair and the top MOSFET pair must also be a matched

This window comparator circuit has 4 limits, 2 lower limits and 2 upper limits, which can produce up to 4 separate outputs, each dedicated to a warning, an alarm or a control condition. These outputs can be tied together to produce any number of desired responses, with output drivers built-in, depending on the responses required when the input level crosses each input limit. For example, VL1 and VH1 can be tied together to produce a single wired-OR output whenever the input signal exceeds either