LM4610N datasheet(5/11 Pages) NSC

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Application Notes (Continued)

may be used provided the output level does not exceed

1 Vrms, V

CC=12V (0.7 Vrms, VCC=9V). At reduced gain

(<−6 dB)the input stage will overload if the input level ex-

ceeds 1.6 Vrms, V

CC=12V (1.1 Vrms, VCC=9V). As there is

volume control on the input stages, the inputs may be oper-

ated with a lower overload margin than would otherwise be

acceptable, allowing a possible improvement in signal to

noise ratio.

Application Circuit

Applications Information

OBTAINING MODIFIED RESPONSE CURVES

The LM4610 is a dual DC controlled bass, treble, balance

and volume integrated circuit ideal for stereo audio systems.

In the various applications where the LM4610 can be used,

there may be requirements for responses different to those

of the standard application circuit given in the data sheet.

This application section details some of the simple variations

possible on the standard responses, to assist the choice of

optimum characteristics for particular applications.

TONE CONTROLS

Summarizing the relationship given in the data sheet, basi-

cally for an increase in the treble control range C

t must be in-

creased, and for increased bass range C

b must be reduced.

Figure 1 shows the typical tone response obtained in the

standard application circuit. (C

t=0.01 µF, Cb=0.39 µF). Re-

sponse curves are given for various amounts of boost and

cut.

Figure 2 and Figure 3 show the effect of changing the re-

sponse defining capacitors C

t and Cb to 2Ct, Cb/2 and 4Ct,

C

b/4 respectively, giving increased tone control ranges. The

values of the bypass capacitors may become significant and

affect the lower frequencies in the bass response curves.

DS101125-35

DS101125-4

FIGURE 1. Tone Characteristic (Gain vs Frequency)

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nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
Texas Instruments	LM4610	773Kb / 18P	[Old version datasheet] Dual DC Operated Tone/Volume/Balance Circuit

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nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
Texas Instruments	LM4610	773Kb / 18P	[Old version datasheet] Dual DC Operated Tone/Volume/Balance Circuit
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