IL2533 Datasheet, PDF (1/27 Pages) Integral Corp. – MULTISTANDARD CMOS IC OF SINGLE CHIP PHONE WITH DOUBLE SOFT LIMITATION

TECHNICAL DATA
MULTISTANDARD CMOS IC OF SINGLE CHIP PHONE WITH
DOUBLE SOFT LIMITATION
Description
IL2533N, IL2533D is CMOS IC, supporting all functions, necessary for design of electronic
telephone with high characteristics. Standard application circuit is shown at figure 2.
Device includes LD/MF constant automatic dialer, melodies generation, ring frequency
identification and high quality circuit for line/speech.
RAM at chip, intended for redialing of 31-digit number and memory elements, containing upto 21
symbols/data. Floating marker method enables to use LNR function under control of different
РАВХ systems. Device contains volume control of hearing aid. Volume is controlled by VOL button
(5.4dB) or "–/+" button (plus 8.1/minus 5.4dB in 5 levels).
Main features
─ Line/speech circuit. LD/MF constant automatic dialer
and tone ring at one 28-pin CMOS chip.
─ Operational range 13 to 100 mА (decreasing upto 5 mА
causes productivity deterioration).
─ Soft limitation for elimination of drastic distortion.
─ Controlling of received signal volume.
─ Automatic line loss compensation.
─ Low noise level (max – 72 dBmp).
─ Actual or complex impedance.
─ Switching LD/MF dialing.
─ Tone damper during programming.
─ Redial of the last 31 digit number.
─ Reference storage.
─ Redial of busy line or previous connection.
─ Pause button for applying to pause or waiting function.
─ 3 pulse flashes: buttons, “R1”–100 ms, “R2” – 280 ms
and “R3” – 375/600 ms.
─ Active RC-filter on chip.
─ Circuit of ring frequency determination.
─ Three-tone melody generator
LS 01
MFL 02
RO 03
VDD 04
AGND 05
STB 06
CI 07
LO 08
LCC 09
HS/DP 10
OSC 11
MODE 12
C4 13
C3 14
package pin out
28 RI
27 LI
26 VSS
25 CS
24 M2
23 M1
22 LED
21 FCI
20 R1
19 R2
18 R3
17 R4
16 C1
15 C2
PACKAGE
IL2533D assembly to 28-pin SO-package
MS-013AE.
IL2533N assembly to 28-pin DIP-package
MS-011AB.
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