HWD2190 Datasheet, PDF (6/32 Pages) List of Unclassifed Manufacturers – 1 Watt Audio Power Amplifier

External Components Description (Figure 1)
Components
Functional Description
1.
R_IN Inverting input resistance which sets the closed-loop gain in conjunction with R_f. This resistor also forms a
high pass filter with C_IN at f_C= 1/(2π R_INC_IN).
2.
C_IN Input coupling capacitor which blocks the DC voltage at the amplifier’s input terminals. Also creates a
highpass filter with R_IN at f_c = 1/(2π R_INC_IN). Refer to the section, Proper Selection of External
Components, for an explanation of how to determine the value of C_IN.
3.
R_f Feedback resistance which sets the closed-loop gain in conjunction with R_IN.
4.
C_S Supply bypass capacitor which provides power supply filtering. Refer to the section, Power Supply
Bypassing, for information concerning proper placement and selection of the supply bypass capacitor,
C_BYPASS.
5. C_BYPASS Bypass pin capacitor which provides half-supply filtering. Refer to the section, Proper Selection of External
Components, for information concerning proper placement and selection of C_BYPASS.