Page 1
Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft’s
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges,or other
parameters) listed in products specifications of any and all SANYO products described or contained
herein.
Monolithic Linear IC
RDS Decoder
Ordering number:ENN3988A
LA2230, 2230M
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
Overview
The LA2230 and LA2230M are RDS demodulator ICs with
an on-chip 57kHz bandpass filter and ARI-SK and DK signal identifiers. A high-performance, cost-effective RDS
decoder system with group/block synchronization and error detection/correction can be built using an LC7070 series device with the LA2230 or LA2230M.
LA2230 and LA2230M feature adjustable ARI detection
sensitivity for improved interference rejection and a highspeed charging circuit for rapid power-on start-up. Including the 57kHz bandpass filter on-chip results in lower -cost
designs that use less PCB area.
The LA2230 and LA2230M operate from a 5V supply and
are avilable in 24-pin DIPs and 24-pin MFPs, respectiv ely.
Features
• 57kHz bandpass filter.
• Adjustable ARI detection sensitivity.
• High-speed charging circuit.
• ARI and RDS signal demodulation.
• Bit-rate clock recovery.
• RDS, DK and SK identification outputs.
• 5V supply.
• 24-pin DIP (LA2230) and 24-pin MFP (LA2230M)
Package Dimensions
unit:mm
3067-DIP24S
[LA2230]
24
1
0.81 1.78
0.48
21.2
0.95
unit:mm
3112-MFP24S
24
[LA2230M]
13
6.4
7.62
12
3.25
3.9max
3.3
0.51min
SANYO : DIP-24S
13
5.4
6.35
0.25
7.6
112
12.6
0.35
1.0
11200TH (KT)/2272/TS No.3988–1/6
0.15
1.8max
1.5
0.1
0.8
SANYO : MFP-24S
0.625
Page 2
Block Diagram
LA2230, 2230M
Pin Description
rebmuNemaNnoitpircseD
1TLF-KD.noitcennocretlifssapwolrotcetedesahp-niKD
2TED-QtuptuonoitcetederutardauQ
3CN.nepotfelebdluohS.noitcennocoN
4TED-Ituptuorotcetedesahp-nI
5SSAPYBnoitcennocroticapacssapybretlifssapdnaB
6TUPNItupnilangisSDRdnaIRA
7TLF-KSnoitcennocroticapacretlifssapwolKS
8TLF-SDRnoitcennocroticapacretlifssapwolSDR
9TLF-LLPnoitcnnocretlifpoolLLP
01WS-TLFhctiwsretlifpoolLLP
11JDA-FPBnoitcennocrotsiserelbairavtnemtsujdaretlifssapdnaB
21DNGdnuorG
31DI-KDtuptuonoitacifitnedilangisKD-IRA
41DI-KStuptuonoitacifitnedilangisKS-IRA
51DI-SDRtuptuonoitacifitnedilangisSDR
61JDA-KS noitcennocrotsiserelbairavtnemtsujdaytivitisnesnoitcetedIRA
71ATADtuptuoataD
81KLCtuptuokcolcetar-tiB
91LLPDnoitcennocretlifssapwolLLPlatigiD
02D/GETNInoitcennocroticapacpmuddnarotargetnI
121FEB
222FEB
32VCCylppusV5
42CSOnoitcennocrotanosercimareC
snoitcennocretlifnoitanimile-dnaB
No.3988–2/6
Page 3
LA2230, 2230M
Specifications
Absolute Maximum Ratings
retemaraPlobmySsnoitidnoCsgnitaRtinU
egatlovylppuSV
noitapissidrewoPxamdP
egnarerutarepmetgnitarepOrpoT 08+ot03–
egnarerutarepmetegarotSgtsT
Recommended Operating Conditions at Ta = 25˚C
retemaraPlobmySsnoitidnoCsgnitaRtinU
egatlovylppuSV
egnaregatlovylppuSV
Electrical Characteristics at Ta = 25˚C, VCC=5V
retemaraPlobmySsnoitidnoC
tnerrucylppustnecseiuQI
ytivitisnesnoitcetedSDRV
ytivitisnesnoitcetedKSV
ytivitisnesnoitcetedKDV
langistupnimumixamnoitcetedSDR
langistupnimumixamnoitcetedKDV
egatlovtuptuolevel-WOLATADdnaKLCV
egatlovtuptuolevel-HGIHATADdnaKLCV
niagegatlovretlifssapdnaBV
noitaunettaretlifssapdnaB
egnarerutpacLLPRC
rettijkcolcetar-tiBt
emitpu-kcolSDRt
emitpu-kcolKSt
emitpu-kcolSDR+KSt
ycneuqerfgninnur-eerfOCVf
ecnatsisertnemtsujdaFPBR
Notes
1. 0dB is referenced to the filter output with f=57kHz.
2. Resistance between BPF-ADJ and GND when V
xamnip32dna,51,41,31 21V
CC
LA2230 : Ta≤80°C
LA2230M : Ta≤37.5°C
LA2230M : Ta=80°C
CC
ponip32 5.5ot7.4V
CC
OCC
1I
2I
3I
V
4I
V
5I
6I
LO
HO
G
α
j
SDR
KS
R+
KS
OCV
JDA
nip32 5V
V
TUPNI
V
TUPNI
V
TUPNI
V
TUPNI
V
TUPNI
V
TUPNI
SD
V
TUPNI
BYPASS
054
082
)0322AL(521+ot04–
)M0322AL(051+ot04–
sgnitaR
nimpytxam
412282Am
DI-SDRno
DI-KSno
DI-KSno
DI-SDRnonoitisnartwoL
detaludomedyltcerroc
DI-KDnonoitisnart
zHk75=f0.95.210.71Bd
.1etoneeS.zHk06=f05.20.6Bd
.1etoneeS.zHk45=f05.30.6Bd
.1etoneeS.zHk83=f3393Bd
V,ediswoL
TUPNI
V,edishgiH
TUPNI
VmorfdoireP
TUPNI
VmorfdoireP
TUPNI
VmorfdoireP
TUPNI
evawenisVm5=9.0–
evawenisVm5=5.1
DI-SDRnonoitisnartWOLot
DI-KSnonoitisnartWOLot
DI-SDRnonoitisnartWOLot-HGIH
.2etoneeS.zHk75taVm001=6.50.86.01kΩ
noitisnartwoL-ot-HGIHroflangismuminim=
noitisnartwoL-ot-HGIHroflangismuminim=
noitisnartwoL-ot-HGIHroflangismuminim=
-ot-HGIHroflangis)SDR+IRA(mumixam=
atadSDRroflangisSDRmumixam=
woL-ot-HGIHroflangisIRAmumixam=
-HGIHotlangisSDRVm3=
-HGIHotlangisIRAVm8=
otlangis)SDR+IRA(Vm5.8=
4.00.1Vm
0.10.2Vm
1.10.2Vm
0305Vm
052Vm
57001Vm
01.03.0V
7.49.40.5V
8±9±01±sµ
53sm
54sm
08sm
354654954zHk
is at its maximum.
Wm054
˚C
˚C
tinU
%
No.3988–3/6
Page 4
LA2230, 2230M
Typical Performance Characteristics Pin Assignment
Maximum power dissipation vs. ambient
temperature
Test Circuit
Notes
R=1.2MΩ for the LA2230, and 1.5MΩ for the LA2230M.
Operating Information
57kHz Bandpass Filter Adjustment
1. Adjust the v ariable resistor connected to BPF-ADJ to
obtain the maximum signal level measured at I-DET
or BEF2.
2. When V
BEF2 for a bi-phase output signal as shown in the
following figure. Note that the ALC circuit will not
operate when V
=1mV RDS signal, check I-DET or
INPUT
≤ 1mV.
INPUT
3. Check the BPF checkpoint signal level when
V
=3 to 6mV or greater RDS signal.
INPUT
No.3988–4/6
Page 5
LA2230, 2230M
Typical Application
The recommended input is a 3 to 6mV RDS signal with
∆f=±2kHz.
Notes
R=1.2MΩ for the LA2230, and 1.5MΩ for the LA2230M.
No.3988–5/6
Page 6
LA2230, 2230M
Specifications of any and all SANYO products described or contained herein stipulate the performance,
characteristics, and functions of the described products in the independent state, and are not guarantees
of the performance, characteristics, and functions of the described products as mounted in the customer's
products or equipment. To verify symptoms and states that cannot be evaluated in an independent device,
the customer should always evaluate and test devices mounted in the customer's products or equipment.
SANYO Electric Co., Ltd. strives to supply high-quality high-reliability products. However, any and all
semiconductor products fail with some probability. It is possible that these probabilistic failures could
give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire,
or that could cause damage to other property. When designing equipment, adopt safety measures so
that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective
circuits and error prevention circuits for safe design, redundant design, and structural design.
In the event that any or all SANYO products(including technical data,services) described or
contained herein are controlled under any of applicable local export control laws and regulations,
such products must not be exported without obtaining the export license from the authorities
concerned in accordance with the above law.
No part of this publication may be reproduced or transmitted in any form or by any means, electronic or
mechanical, including photocopying and recording, or any information storage or retrieval system,
or otherwise, without the prior written permission of SANYO Electric Co. , Ltd.
Any and all information described or contained herein are subject to change without notice due to
product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification"
for the SANYO product that you intend to use.
Information (including circuit diagrams and circuit parameters) herein is for example only ; it is not
guaranteed for volume production. SANYO believes information herein is accurate and reliable, but
no guarantees are made or implied regarding its use or any infringements of intellectual property rights
or other rights of third parties.
This catalog provides information as of January, 2000. Specifications and information herein are subject
to change without notice.
PS No.3988–6/6
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