ILA1238NS
AM/FM M
ONO
R
ECEIVER
ILA1238NS (analog of CXA1238S, SONY) - high-quality one-chip
stereoreceiver designed for receipt of AM/FM signals of broadcasting
stations. The receiver contains: high-frequency amplifiers and AM and FM
mixers, AM and FM intermediate frequency amplifiers, AM and FM
detectors, output decoder of stereosignal for coding system with pilot tone.
•
Low consumption current (in FM mode Icc=12.5 mA, in
АМ
mode Icc=9.5
mA at Ucc=6 V)
•
LED indication of tuning
•
LED indication of "STEREO" mode
•
Switching-off noiseless FM tuning
•
Small number of peripheral components
PACKAGE
30-pin mini-DIP
T
A
= -10°...+70° C
BLOCK DIAGRAM
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
VCO
MULTIPLEX
REGULATOR
1/2
COUNTER
PD1
PD2
FM FE
REGULATOR
MUTING
AUTO
BLEND
DC
AMP
BU
AMP
DETUNE
MUTING
CONTROL
11
12
AM FE
FM IF
DISCRI
AM IF
DET
TUNING IND
DECODE
AMP
M/ST
SW
DC
AMP
BU
AMP
RIPPLE
FILTER
DC
AMP
9
10
1
2
3
4
5
6
7
8
13
14
15
Note:
VCO - voltage controlled oscillator,
REGULATOR - reference voltage source,
MULTIPLEX REGULATOR - reference voltage source for stereodecoder,
FM FE - heterodyne oscillator, high frequency amplifier and FM path mixer,
AM FE - heterodyne oscillator, high frequency amplifier and AM path mixer,
FM IF DISCRI - intermediate frequency amplifier and FM path demodulator,
AM IF DET - intermediate frequency amplifier and AM path detector ,
TUNING IND - tuning indicator driver,
DETUNE MUTING CONTROL - muting control block,
DC AMP - DC amplifier,
BU AMP - buffer amplifier,
M/ST SW - “MONO”-”STEREO” switch,
DECODE AMP - decoder and LF signal amplifier,
1
INTEGRAL [ INTEGRAL CORP. ]
