LA8519M Просмотр технического описания (PDF) - SANYO -> Panasonic

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LA8519M

I/O Switch/Voice Signal-Processing IC for Cordless Telephones

SANYO -> Panasonic 

LA8519M

• Anti-sidetone network

The LA8519M can switch between two anti-sidetone networks, one for the near terminal and one for the far

terminal, depending on the circuit current. (See figure 1 for the connections used.) The switching point can be

changed by connecting PADC (pin 34) through a resistor to either ground or S-VCC (pin 47).

If only one anti-sidetone network is used, short pin 51 to pin 52 as shown in figure 2. (The component values

shown are for reference purposes only.)

Line

6.2kΩ

0.01µF

1.5kΩ

11kΩ

3.3kΩ

Tr

82Ω

82Ω

8.2Ω

+

620Ω

48

47

VL S-VCC

51Ω

49 TOI

50 TOO

51 BN1

LA8519M

52 BN2

Figure 2

A13124

• Line voltage VL DC characteristics when VCC is not applied (Values shown are for reference purposes only.)

BN

82Ω

+

+

Load

620Ω

48

47

46

VL S-VCC VSP

51Ω

3.3kΩ

Tr

49 TOI

82Ω

LA8519M

50 TOO

8.2Ω

A13125

The slope of the DC characteristics when VCC is not applied can be increased without changing the DC

characteristics when VCC is applied by applying a load to VSP (pin 46).

No. 6471-18/29

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