M4670

Preliminary

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

8 of 9

www.unisonic.com.tw

QW-R502-442.b

APPLICATION INFORMATION (Cont.)

Input capacitors can be used in a differential configuration as shown in Fig. 4. Equation (3) above is used to

determine the value of the Ci capacitors for a desired frequency, Equation (2) above is used to determine the value

of the Ri resistors for a desired gain.

The M4670 can be used for amplification of multiple audio sources. The application configuration as shown in

Fig. 5. Each input gain can be independently set the maximum use of each input and the design equation (2) on the

Ri resistors of flexibility. Input capacitance can be used with one or more than one source, as well as the different

frequency response according to the source or DC voltage, if necessary from the source block.

SINGLE-ENDED CIRCUIT CONFIGURATIONS

The M4670 can be used for single-ended input capacitance of the source, but will need to enter the terminal to

prevent any DC. For the gain equations, Equation (2), frequency response, Equation (3), the typical application

configuration as shown in Fig. 6.