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Ordering number : ENN*6855
LA1824
Monolithic Linear IC
LA1824
Single Chip Tuner IC for Use in Radio/Cassette Products with Manual Tuning
Preliminary Overview Package Dimensions
The LA1824 is a single-chip tuner IC that incorporates unit : mm FM/AM and MPX circuits. 3067A The built-in MPX-VCO allows this IC to be adjustment free and to require no external components.
[LA1824]
21.0
Features
* *
24
13
7.62 6.4
* *
*
Functions
(0.71) 0.48 1.78 : RF amplifier, mixer, oscillator, IF amplifier, detector, signal meter, tuning indicator. AM : RF amplifier, mixer, oscillator (with ALC), IF amplifier, detector, AGC, tuning indicator. MPX : PLL stereo decoder, stereo indicator, VCO on chip, forced monaural.
FM
0.95
SANYO : DIP-24S(300mil)
Specifications
Maximum Ratings at Ta = 25 C
Parameter Maximum supply voltage Indicator drive current Allowable power dissipation Operation temperature Ambient temperature Symbol VCC max ILED Pd max Topg Tstg Pin 8, 9 Ta 70 C Conditions Ratings 7.0 20 300 -20 to +70 --40 to +125 Unit V mA mW C C
Recommended Operating Conditions at Ta = 25 C
Parameter Recommended supply voltage Operation supply voltage range Symbol VCC VCC op Conditions Ratings 4.5 2.5 to 6.0 Unit V V
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.
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
11201 RM (IM) No.6855-1/10
0.51min (3.25) 3.3 3.9max
FM, AM and MPX integrated in a single-chip. Adjustment free MPX-VCO : No ceramic resonator used. FM front-end : Local OSC voltage reduced. FM stereo and FM/AM tuning indicator output provided. Package : DIP-24S.
1
0.9
12
0.25
LA1824
Operating Characteristics at Ta = 25 C, VCC = 4.5 V, in the specified test using the IC179-2 socket (Yamaichi Electric Co.,Ltd.) FM front-end characteristics at fc = 98 MHz, fm = 1 kHz, 22.5 kHz dev
Parameter Local oscillator voltage Input limiting voltage Quieting sensitivity Symbol VOSC 3 dB L.S. Q.S. Conditions No input, fosc = 108.7 MHz, the pin 20 output with FET buffer gain * * --10 dB = Referenced to VIN = 60 dBV EMF, 22.5 kHz dev, a 3 dB down input 30 dB quieting sensitivity Ratings min 15 --typ 30 13 12 max 60 Unit mVrms
- dBV EMF - dBV EMF -
FM IF characteristics (monaural) at fc = 10.7 MHz, fm = 1 kHz, 75 kHz dev
Parameter Quiescent current Demodulation output Signal-to-noise ratio Total harmonic distortion (mono) Input limiting voltage Station detector sensitivity Symbol ICC(FM) VO S/N THD 3 dB L.S. SD-ON No input VIN = 100 dBV, the pin 16 output VIN = 100 dBV, the pin 16 output VIN = 100 dBV, the pin 16 output Referenced to VIN = 100 dBV, 75 kHz dev, a 3 dB down input No mod, an input level great enough to turn on the station detector Conditions Ratings min 7.0 130 62 -21 -typ 13.7 190 70 0.4 32 33 max 20 260 1.2 42 Unit mA mVrms dB % dBV dBV
FM IF characteristics (stereo) at fc = 10.7 MHz, fm = 1 kHz, L + R = 90 %, Pilot = 10 %
Parameter Separation Stereo on level Total harmonic distortion (main) Symbol SEP ST-ON THD Conditions VIN = 100 dBV, L modulation, the pin 16 output/the pin 17 output VIN = 100 dBV, the pilot modulation search that V8 < 0.5 V VIN = 100 dBV, Main modulation, the pin 16 output Ratings min 25 1.5 -typ 40 3.5 0.5 max 6.3 1.2 Unit dB % %
AM characteristics at fc = 1000 kHz, fm = 1 kHz, 30 % modulation
Parameter Quiescent current Detector output Signal-to-noise ratio Total harmonic distortion Station detector sensitivity Symbol ICC(AM) VO(1) VO(2) S/N(1) S/N(2) THD(1) THD(2) SD-ON No input VIN = 23 dBV, the pin 16 output VIN = 80 dBV, the pin 16 output VIN = 23 dBV, the pin 16 output VIN = 80 dBV, the pin 16 output VIN = 80 dBV, the pin 16 output VIN = 107 dBV, the pin 16 output No mod, an input level great enough to turn on the station detector Conditions Ratings min 5.0 18 50 15 47 ---typ 8.5 40 85 20 53 0.5 0.5 26 max 15 70 130 1.3 1.5 Unit mA mVrms mVrms dB dB % % dBV
No.6855-2/10
FM Ant + +
Block Diagram
B.P.F AM R-OUT + 21 VCC2 FM OSC TRIG ST SW VCO FF FF FF PILOT DET DECODER PHASE COMP 20 19 18 17 16 15 14 13 DET L-OUT FM MN ST
24
23
22
GND2
FM RF
FM MIX
LA1824
AM MIX
S-METER
DET
AGC
AM RF VCC1 GND1 TUN LED 7 8
REG
AM OSC
ST LED 9
FM IF
AM-IF
1
2
3
4
5
6
10
11
12
AM Ant + FM ST AM / FM TUN 10.7MHz + VCC 450kHz V-AGC
+
ILA00376
No.6855-3/10
FM antenna + 47000pF + 0.1F 3.3F + 0.47F
10
10
47000pF
1000pF FM OSC 21 20 19 4.7F 18 17 16 15 14 + R-OUT L-OUT AM MN ST FM
18pF 1800pF
8pF
6800pF
6800pF
3.3k
B.P.F
2.2k FM-DET 13
FM RF
Sample Application Circuit Diagram
24
23
22
LA1824
LA1824
1 100
2
3
4
5
6
7
8
9
10
11
12
AM antenna
AM-OSC
390pF + 22F
8pF
22pF
FM ST 450kHz 1k
FM-IFT 10.7MHz +
AM-IFT
+
AM / FM SD 1k
10F 100F 0.047F
0.047F
ILA00377
VCC=4.5V
No.6855-4/10
LA1824
Coil specifications (bottom view) * FM-BPF : SA-309 (Sumida) 88 MHz to 108 MHz * FM-RF : SA-149 (Sumida) 3.6 mm diameter, air core, 0.6 mm wire, 4.5 T * FM-OSC : SA-151 (Sumida) 3.6 mm diameter, air core, 0.6 mm wire, 3.5 T * FM-MIX : SA-165 (Sumida) : A119ACS-19458X (Toko) 4-6 2T S S S VCC 3 VCC 3 4 CF 4 CF 3-1 12 T 0.12UEW 2 2 fo = 10.7 MHz 6 GND 6 GND pin5 1 pin5 1 Qo 50 S ILA00382 ILA00378 100 pF internal * FM-DET : SA-1134 (Sumida) : A119ACS-19459Z (Toko)
pin13 3 2 VCC 1 S
*
3-1 10 T 4-6 2T 0.1-2UEW fo = 10.7 MHz Qo 60 100 pF internal
4
6
ILA00379
1-3 12 T 0.10UEW fo = 10.7 MHz Qo 70 82 pF internal 6-4 37 T 3-1 74 T 0.06UEW fo = 796 kHz Qo 80 L = 140 H
pin13 3 2 VCC 1 S
4
6
ILA00379
1-3 11 T 0.1-2UEW fo = 10.7 MHz Qo 70 82 pF internal 3-1 6-4 0.06-2UEW fo = 796 kHz Qo 65 L = 140 H 64 T 32 T
AM-OSC : SA-181 (Sumida)
S PVC 3 2 GND 1 6 VCC S
ILA00380
: L7BRS-3132AQ (Toko)
S PVC 3 2 GND 1 6 VCC S
ILA00380
4 pin3
4 pin3
*
AM-MIX : SA-1136 (Sumida)
S 3
: PCFAZ-082 (Toko)
3 VCC 2 pin7 1 S 6
ACFA-450L08 ILA00383
3-2 122 T S 4 CF 4-6 9T 2-1 62 T VCC 2 0.06UEW 6 GND pin7 1 fo = 450 kHz, Qo 65 ILA00381 180 pF internal * FM-IF filter : SFE10.7MS2 (Murata) * AM-IF filter : SFU450B (Murata) * Poly-varicon : FT-2217 (Toko) * MW Bar-antenna : C8E-A0105 (Toko) 1-2 67 T 3-4 9T fo = 796 kHz S S 1 2 3 4 Qu = 180 min PVC GND pin1 pin2 L = 260H
ILA00384
S 4 GND
1-2 47 T 2-3 100 T 4-6 12 T fo = 450 kHz 180 pF internal With AM-IF filter
No.6855-5/10
LA1824
Pin Descriptions and Quiescent Voltage at VCC = 4.5 V Quiescent Pin Function voltage (V) Equivalent circuit number AM FM
2
Remarks
1
AM-RF input
1.3
1.3
1
Connect the AM antenna coil between this pin and pin 2 (Reg)
ILA00307
2
2
Reg
1.3
1.3
ILA00308
3
4
3
AM-OSC
4.5
4.5
Connect the AM oscillator coil between this pin and pin 4 (VCC1)
ILA00309
4
VCC1
4.5
4.5
4 5
AM/FM-IF/MPX block VCC
5
FM-MIX output
4.5
4.5
Connect the FM mixer coil between this pin and pin 4 (VCC1)
ILA00385
6
GND1
0
0
7 4
AM/FM-IF/MPX block GND
7
AM-MIX output 4.5
4.5
Connect the AM mixer coil between this pin and pin 4 (VCC1)
ILA00386
No.6855-6/10
LA1824
Pin number Quiescent voltage (V) AM FM
Function
Equivalent circuit
8
Remarks
Active-low 8 Tuning indicator 4.5 4.5 Open-collector output can directly drive LED (IC max = 20 mA)
ILA00387
9
Active-low Open-collector output can directly drive LED (IC max = 20 mA) AM-IF signal is output in AM mode
9
Stereo indicator and AM IF output
4.5
4.5
ILA00388
10
10
FM-IF input
1.3
1.3
2
Rin
Rin = 330
ILA00314
11
11
AM-IF input
1.3
1.3
2
Rin
Rin = 2 k
ILA00315
12
AM-AGC output and FM signal meter output
0.7
0.2
12 R
Internal load resistance R = 16.6 k
ILA00316
13
13
FM-DET
4.5
4.5
Connect the FM detector coil between this pin and pin 4 (VCC1)
ILA00317
No.6855-7/10
LA1824
Pin number Quiescent voltage (V) AM FM
Function
Equivalent circuit
Remarks
14
14
Pilot detector filter (forced mono)
2.9
3.8
Forced monaural mode when pin 14 is connected to ground
ILA00318
15
15
Phase comparator filter (AM/FM switch)
0
3.8
FM mode is when pin 15 is open, and AM mode is when pin 15 is connected to ground
ILA00319
16 17
L output 1.4 R output 1.4
Rout
16
Rout = 7.5 k
( 17 )
ILA00320
18
18
MPX input
1.3
1.3
Rin
ILA00321
Rin = 50 k
19
AM/FM detector output
Rout(FM)
Output impedance AM : Rout = 50 k FM : Rout = 500
19 Rout(AM)
ILA00322
0.5
1.5
The channel separation can be adjusted with an external capacitor connected between this pin and ground
21
20
20
FM-OSC
4.5
4.4
Connect the FM oscillator coil between this pin and pin 21 (VCC2)
ILA00323
No.6855-8/10
LA1824
Pin number Quiescent voltage (V) AM FM
Function
Equivalent circuit
Remarks
R
FM-FE block VCC
4
ILA00324
21
VCC2
4.5
4.4
21
Power is supplied pin 4 (VCC1) via external resistor (10 )
22
21
22 24
FM-RF output FM-RF input
4.5 0
4.4
24
Connect the FM-RF coil between this pin and pin 21 (VCC2)
Rin
1.0
Rin = 500
ILA00325
23
GND2
0
0
FM-FE block ground
0
FM Characteristics
5
FM Characteristics
VCC=4.5V fc=98MHz fm=1kHz
--20
Signal
4
Output -- dBm
THD -- %
--40
3
AM out
--60
2
--80
--100 --20
VCC=4.5V fc=98MHz fm=1kHz, 22.5kHz dev AM=30%mod
0 20 40 60
Noise
1
THD(75k)
80
100
120
140
0 --20
THD(22.5k)
0 20 40 60 80 100 120 140
Ant input -- dBV EMF
ILA00390 5
Ant input -- dBV EMF
ILA00391 2.5
AM Characteristics
0
AM Characteristics
VCC=4.5V fc=1000kHz fm=1kHz, 30%mod
THD30%
--20
VCC=4.5V fc=1000kHz fm=1kHz, 30%mod
Signal
4
2.0
Output -- dBm
--40
3
1.5
--60
2
1.0
Noise
--80 1
VAGC
TH D8 0%
0.5
--100 0 20 40 60 80 100 120 140
0 0 20 40 60 80 100 120
0 140
Ant input -- dB/m
ILA00392
Ant input -- dB/m
ILA00393
No.6855-9/10
VAGC -- V
THD -- %
LA1824
10 7 5 3 2
FM st Characteristics
VCC=4.5V fc=98MHz, VIN=60dBV EMF 75kHz dev, L+R=90% Pilot=10%
60
FM st Characteristics
50
Sep R
40
Sep L
THD -- %
Sub
1.0 7 5 3 2
Sep -- dB
30
Mono
Main
ST
20
10
0.1 0.01
23
5 7 0.1
23
5 7 1.0
23
5 7 10
23
5 7 100
0 0.01
VCC=4.5V fc=98MHz, VIN=60dBV EMF 75kHz dev, L+R=90% Pilot=10%
23 5 7 0.1 23 5 7 1.0 23 5 7 10 23
fm -- kHz
ILA00394
fm -- kHz
5 7 100 ILA00389
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 expor ted without obtaining the expor t 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, 2001. Specifications and information herein are subject to change without notice.
PS No.6855-10/10

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