LA8638NV Ver la hoja de datos (PDF) - SANYO -> Panasonic

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LA8638NV

Low-Voltage Compander IC for Cordless Telephones

SANYO -> Panasonic 

LA8638NV

Continued from preceding page.

Pin Number

12

Pin Name

BTL-GND

Pin Voltage

11

BTL-IN

VCC/2

VREF

Equivalent Circuit

+

–

VCC

14

Description

Ground for BTL amplifier

BTL amplifier input

13

BTL-OUT1

VCC/2

14

BTL-OUT2

VCC/2

15

VCC

+

11

–

BTL amplifier reversed output

13

A13530

BTL amplifier non-reversed output

Power supply pin

Indeterminate

16

FSK-OUT (when there is

no signal)

17

SUB-CNT1

VCC

18

SUB-CNT2

VCC

20

TX-MUTE

VCC

22

TX-LVL-CNT

VCC

19

BTL-CNT

—VC—C —+ —0.6—5

2

FROM 6PIN

IN

–

VREF2

+

VCC

16

Comparator output (open collector output)

A13531

17 20

15kΩ 18 22

BTL AMP

VCC

19

100kΩ

Internal operating mode control pins. All four

pins have identical structures.

A13532

BTL amplifier operation control pins

A13533

21

TX-DATA-IN

VCC /1.6

23

TX-OUT

VCC /1.6

24

FREQ-ADJ

0.01 V

VREF3

21

40kΩ

IDC

+

–

50kΩ

LPF

Transmitter data input

A13534

VREF3

LPF

20kΩ

+

–

30kΩ

23

Transmitter output

A13535

BIAS CIRCUIT LPF

Pin for setting cutoff frequency of splatter

filter

24

A13536

Continued on next page.

No. 6627-10/16

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