应用功能： CD的模拟前端 TDA7521 is a BiCMOS analog front end for CD applications. Four input signals (AC*, BD*, E* and F*), coming from the pick-up (whose laser diode is driven and controlled by the device itself), are preamplified by a programmable voltage-to-voltage or current-tovoltage stage
电路图解压密码：www.838dz.com (小写)
