Creatorz component datasheet page 2 of 16 document number. This amplifier has high input impedance, wide bandwidth, and selectable input voltage reference. The pga103 is ideal for systems that must handle wide dynamic range signals. The pga103 is a programmablegain amplifier for general purpose applications.
The pga281 is a highprecision instrumentation amplifier with a digitallycontrollable gain and signalintegrity test capability. Must keep the device in saturation for a fixed current, the load resistor can only be chosen so large to have good swing wed also like to avoid getting to close to saturation agrrv. Gain steps from 1 to 50 high input impedance selectable input reference adjustable power settings general description the pga implements an opampbased, noninverting amplifier with userprogrammable gain. Pga281 zerodrift, high voltage programmable gain amplifier ti. Programmable gain amplifier pga manual multichannel systems.
This amplifier has high input impedance, wide bandwidth and selectable input voltage reference. Analog devices programmable gain amplifiers pgas provide excellent gain accuracy. The pga psoc creator component implements an opampbased, noninverting amplifier. Detailed analysis of the fullydifferential sc amplifier of fig. Access to the output amplifiers input terminals allows it to be easily configured as a programmable gain amplifier pga suitable for ac gain control.
The programmable gain amplifier pga is used for amplifying and filtering raw data from a miniature preamplifier, for. The ad844 can be used in place of traditional op amps, but its. Pga can be used as a unity gain amplifier to buffer the inputs of lower impedance blocks. Maximize gain of cs amp increase the g m more current increase rd free.
Thus, for a finite op amp gain av, the signal voltage at the inputs of the op amp is a slowly varying signal which is therefore nearly cancelled by the cds switching of c1 and c2. Electronicdesign com sites electronicdesign com files uploads 2015 02 ifd2628 f1. A vref analog vref is the input terminal for a reference signal. A 12bit software programmable gain amplifier can be config ured using the ad625, a cmos multiplexer and a resistor network. The amount of amplification provided by an amplifier is measured by its gain. It is derived from the switched capacitorcontinuous time scct block. When choosing the topology of the amplifier circuit with a very high gain. The pga implements an opampbased, noninverting amplifier with userprogrammable gain. Unlike previous instrumentation amplifier designs, the on resistance of a cmos switch does not affect the gain accuracy.
Digitally programmable amplifier meets sensor gain, ranging needs. If you want to keep the pattern for future use, save the file as an. Gains of 1, 10, or 100 are digitally selected by two cmosttlcompatible in puts. Variable gain amplifiers programmable gain amplifiers. Ad624 precision instrumentation amplifier analog devices. Gains of 1, 10, or 100 are digitally selected by two. Amplifier gain small signal equivalent circuit is shown here. This reduces the effect of finite op amp gain on the voltage gain of the stage. Gain amplifier ad526 features digitally programmable binary gains from 1 to 16 twochip cascade mode achieves binary gain from 1 to 256 gain error.
Gains of 1, 10, or 100 are digitally selected by two cmosttlcompatible in. White paper introduction to optical amplifiers finisar corporation. This amplifier has high input impedance, wide bandwidth, and selectable input voltage. Variable gain amplifiers to meet your varying performance requirements gains up to vv and bandwidths to 4.
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