IL2533 datasheet(3/27 Pages) INTEGRAL

Part #	IL2533

Description	MULTISTANDARD CMOS IC OF SINGLE CHIP PHONE WITH DOUBLE SOFT LIMITATION

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Manufacturer	INTEGRAL [Integral Corp.]

Direct Link	http://www.iksemi.com/

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IL2533

Table 1 – Circuit pins description

No

Pin letter

symbol

Function

01

LS

Line current input.

Input for line current determination (responsibility setup)

02

MFL

MF level setup.

For DTMF level setup can be used potential divider, connected from this pin to

AGND and to VSS

03

RO

Receipt output

Output for controlling of dynamic hearing aid with impedance from 140 to 300

Оhm

04

VDD

Positive supply voltage.

Supply voltage output for circuit

05

AGND

Analog ground, Analog ground for amplifiers

06

STB

Balanced input side tone.

Input for side tone suppression

07

CI

Entire impedance output.

For complex impedance, capacitor should be connected to this output

08

MO

Melody output.

Melody generator PWM-output for tone ring.

When output not active, in “Switch off” state

09

LLC

Line waste compensation.

Selected output for loss compensation in line.

LLC=AGND : 20-50 mА; LLC=VDD : 45-75 mА; LLC=VSS :no compensation

10

HS/DP

Switch hook input and output of pulse dialing.

Analog input/output, establishing by high switch hooks by off-hook and open

drain set it in low state during interruptions for pulse dialing and flash pulses

11

OSC

Oscillator input.

Input for ceramic resonator (3.5 МHz)

12

MODE

Input of mode denomination selection.

Mode output

Function

Open

Interlocking number dialing

Row 1

LD mode, 10 pulse/s, 33/66ms

Row 2

LD mode, 10 pulse /s , 40/60ms

Row 3

LD mode, 20 pulse /s , 16/33ms

Row 4

LD mode, 20 pulse /s , 20/30ms

Row 5

LD mode, 10 pulse /s, 33/66ms. Temporary MF with

tone on first button input "

∗"

Row 6

Only MF, 82/82ms

Row 7

Only MF, 82/160ms

Note – Pulse/s — pulses per second.

During temporary MF : 82/160ms

13

C4

14

C3

15

C2

16

C1

Keyboard line.

(see keyboard scheme at figure 3)

3

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