TS4956 查看數據表（PDF） - STMicroelectronics

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TS4956

Stereo audio amplifier system with I2C bus interface

STMicroelectronics 

TS4956

2

Typical application schematic

Typical application schematic

Table 4. External components descriptions

Components

Functional description

Cs1, Cs2

Cb

Cin1 to Cin4

Cout

R1

Supply bypass capacitors which provide power supply filtering.

Bypass capacitor which provides half-supply filtering.

Input capacitors which form together with input impedance Zin first-order high pass

filter to block DC voltage on inputs

Output capacitor which forms with output load RL first-order high pass filter to block

half-supply voltage on single-ended output.

Resistor to keep Cout charged for better pop performance on single-ended output.

Figure 1. Typical application for the TS4956 (mode 1, 2, 3, 4, 5, 6)

Vcc

Cs1

Cs2

1µF

100nF

Diff. input +

Cin1

+

330nF

Diff. input -

Cin2

+

330nF

TS4956

A1 MIP

Stereo

Input Left

A2 MIN

Stereo

Input Right

SE input left Cin3

+

330nF

B4 LIN

Stereo

Input Left

SE input right Cin4

+

330nF

A5 RIN

Stereo

Input Right

Mode

Select

Bias

I2C

BYPASS I2CVCC

Cb

I2CVCC

SCL

1µF

SDA

I2C BUS

LHP Amplifier

LHP

PHG Amplifier

PHG

RHP Amplifier

RHP

Speaker Amplifier

SRP+

SRN-

MLO Amplifier

MLO

Digital volume

control

MODE3: Gx(MIP+MIN)

MODE4: GxLIN

B6

16/32 Ohms

A7

MODE3: Gx(MIP+MIN)

MODE4: GxRIN

D6

16/32 Ohms

MODE1: Gx(MIP+MIN)

B2 MODE2: Gx(LIN+RIN)

8 Ohms

D2

MODE5: Gx(MIP+MIN)

MODE6: Gx(LIN + RIN)

E7 Cout+

220µF

R1

1k

16/32 Ohms

3/51

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