TDA7439DS13TR 查看數據表（PDF） - STMicroelectronics

零件编号

产品描述 (功能)

比赛名单

TDA7439DS13TR

Three-band digitally-controlled audio processor

STMicroelectronics 

TDA7439DS

Application suggestions

Transposing and solving for the external components we get:

C1 = -------------A-----V----–-----1--------------

2 ⋅ π ⋅ Fc ⋅ Ri ⋅ Q

C2 = ------Q----2-----⋅---C----1-------

AV – 1 – Q2

R2 = -2----⋅---π-----⋅---C-----A1----V-⋅---F–----c-1---⋅--–-(---AQ----V-2---–-----1----)---⋅---Q---

3.1.2

Treble stage

The treble stage is a high-pass filter whose time constant is fixed by an internal resistor

(25 kΩ typically) and an external capacitor connected between treble pins and ground.

Typical responses are shown in Figure 10 and Figure 11.

3.2

Pin CREF

The suggested value of 10 µF for the reference capacitor (CREF), connected to pin CREF,

can be reduced to 4.7 µF if the application requires faster power-on.

3.3

Electrical characteristics

Figure 5. THD vs frequency

Figure 6. THD vs RLOAD

9/23

Share Link: