STV0056AF datasheet(15/27 Pages) STMICROELECTRONICS

15 / 27 page

Audio

Pins 51 - 52

PK OUT R

PK OUT L

Peak Detector

Ω

3.4V

Clamp

DD 9V

Figure 8

Pin 55 - 57

FC L - FC R

DD 9V

Ivar

Figure 9

Audio

2.4V Bias

GND 0V

Pins 5 - 7 - 23 - 24

S2 OUT L

S2 OUT R

S3 OUT L

S3 OUT R

20k

Ω

Figure 11

µA

Pins 17 - 18 - 20 - 21

S2 RTN L - S2 RTN R

S3 RTN L - S3 RTN R

4.8V

25k

Ω

Figure 12

Audio

2.4V Bias

30k

Ω

GND 0V

30k

Ω

Pins 62 - 3

VOL OUT R

VOL OUT L

15k

Ω

4.8V

Figure 10

µA

FM IN

2.4V

10k

Ω

10k

Ω

Left Channel

Right Channel

µA

Figure 13

2.4V

REF

Figure 14

PK OUT R, PK OUT L

FC L, FC R

Ivar is controlled by the peak det audio level max.

±15µA (1VPP audio).

VOL OUT R, VOL OUT L

Audio output with volume and scart driver with

+12dB of gain for up to 2VRMS. The opamp has a

push-pull output stage.

S2 OUT L, S2 OUT R, S3 OUT L, S3 OUT R

Same as above but with gain fixed at +6dB.

S2 RTN L, S2 RTN R, S3 RTN L, S3 RTN R

4.8V bias voltage is the same as the bias level on

the audio outputs.

FM IN

The other input for each channel is internallybiased

in the same way via 10k

Ω to the 2.4V VREF.

IREF

The optimum value if IREF is 50

µA ±2% so an

external resistor of 47.5k

Ω ±1% is required.

180

µ/2µ

MUX

100

µ/2µ

I/O/22kHz

µ/2µ

205

Ω

ESD

IIC Reg

22kHz

Figure 15

I/O / 22kHz

The input is TTL compatible.

The output is tri-stateable.

PIN INTERNAL CIRCUITRY (continued)

SCL

This is the input to a Schmitt input buffer made with

a CMOS amplifier.

SCL

µ/4µ

205

Ω

ESD

Figure 16

STV0056AF

15/27

STV0056AF 数据表(PDF) 15 Page - STMicroelectronics

STV0056AF 数据表(HTML) 15 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27

数据表下载

链接网址

STV0056AF 数据表(PDF) 15 Page - STMicroelectronics

STV0056AF 数据表(HTML) 15 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27

数据表 下载

链接网址

数据表下载