Programmable Gain Amplifier Circuit. Toggling these logic bits swaps resistors in the op amp s feedback network effectively changing the gain. One indispensable circuit is the pga programmable gain amplifier.
Toggling these logic bits swaps resistors in the op amp s feedback network effectively changing the gain. The gain values are set by controlling the external gain setting resistor value r g with the four spst switches which are connected to four precision resistors. For applications that require higher levels of accuracy we offer a family of precision programmable gain amplifiers that delivers higher performance.
Programmable gain amplifiers our programmable gain amplifier pga portfolio includes low cost general purpose pgas for cost sensitive applications.
One indispensable circuit is the pga programmable gain amplifier. Offset voltage trim circuit. 1 op amp buffer is required to preserve good gain accuracy see text. The amplifier s gain can be conveniently changed via a small collection of analog switches resistors and logic bits.
