View LA1823_294482.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

Ordering number : ENN*6854
LA1823
Monolithic Linear IC
LA1823
Single-Chip Tuner IC for Use in Radio Cassette Recorder
Preliminary Overview Package Dimensions
The LA1823 is a single-chip tuner IC that incorporates unit : mm FM/AM and MPX circuits and supports electronic tuning. 3067A The built-in MPX-VCO allows this IC to be adjustment-free and to require no external components.
[LA1823]
21.0 13
7.62 6.4
Features
* * *
24
*
* * * *
FM, AM and MPX integrated in a single-chip. FM front-end : Local OSC voltage reduced. Adjustment free MPX-VCO : No ceramic resonator used. Adjustment free FM-DET : Using ceramic discriminator. Build in FM stereo indicator. Build in FM/AM IF count buffer. Build in AM OSC buffer. Package : DIP-24S.
1 0.9
12
(0.71)
1.78
0.48
0.95
SANYO : DIP-24S(300mil)
Functions
FM : RF amplifier, mixer, oscillator, IF amplifier, detector, signal meter, IF count buffer output. AM : RF amplifier, mixer, oscillator (with ALC), oscillator buffer output, IF amplifier, detector, AGC, IF count buffer output. MPX : PLL stereo decoder, stereo indicator, VCO on chip, forced monaural, Audio mute.
Specifications
Maximum Ratings at Ta = 25 C
Parameter Maximum supply voltage Indicator drive current Allowable power dissipation Operating temperature Storage temperature Symbol VCC max ILED Pd max Topg Tstg Pin 8 Ta 70 C Conditions Ratings 7.0 20 300 -20 to +70 --40 to +125 Unit V mA mW C C
Operating Conditions at Ta = 25 C
Parameter Recommended supply voltage Operation supply voltage range Symbol VCC VCC op Conditions Ratings 4.5 1.8 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.6854-1/10
0.51min (3.25) 3.3 3.9max
0.25
LA1823
Operating Characteristics at Ta = 25 C, VCC = 4.5 V, in the specified test circuit using the IC59-2043-2 socket (Yamaichi Electric Co.,Ltd.) Quiescent supply current
Parameter FM-mode quiescent current AM-mode quiescent current Symbol ICC(FM) ICC(AM) No input No input Conditions Ratings min 10.0 6.5 typ 15.0 9.2 max 20.0 14.5 Unit mA mA
FM front-end characteristics at fc = 98 MHz, fm = 1 kHz, 22.5 kHz dev
Parameter Input limiting voltage Local oscillator voltage Symbol --3 dB L.S. VOSC Conditions Referenced to VIN = 60 dBV EMF, 22.5 kHz dev, a 3 dB down input fosc = 108.7 MHz with FET buffer gain * * 0 dB = Ratings min typ 12 100 max Unit dBV EMF mVrms
FM IF characteristics (monaural) at fc = 10.7 MHz, fm = 1 kHz, 75 kHz dev
Parameter Demodulation output Signal-to-noise ratio Total harmonic distortion (mono) Input limiting voltage IF count buffer on level IF count buffer output Symbol VO S/N THD --3 dB L.S. IF buff on VIF buff VIN = 100 dBV VIN = 100 dBV VIN = 100 dBV Referenced to VIN = 100 dBV, 75 kHz dev, a 3 dB down input IF count buffer on Test from pin 7 for VIN = 100 dBV, no modulation Conditions Ratings min 135 63 typ 180 72 0.5 31 35 120 38 45 180 1.5 45 55 240 max 240 Unit mVrms dB % dBV dBV mVrms
FM IF characteristics (stereo) at fc = 10.7 MHz, fm = 1 kHz, 75 kHz dev, L + R = 90 %, PILOT = 10 %
Parameter Separation Stereo on level Total harmonic distortion (main) Symbol SEP ST-ON THD Conditions VIN = 100 dBV VIN = 100 dBV, Pilot modulation VIN = 100 dBV Ratings min 25 2.4 typ 40 3.5 0.5 7.2 1.7 max Unit dB % %
AM characteristics at fc = 1 MHz, fm = 1 kHz, mod = 30 %
Parameter Detector output Signal-to-noise ratio Total harmonic distortion OSC buffer output IF count buffer on level IF count buffer output Symbol VO(1) VO(2) S/N(1) S/N(2) THD VOSC buff IF buff on VIF buff VIN = 23 dBV VIN = 80 dBV VIN = 23 dBV VIN = 80 dBV VIN = 80 dBV Test from pin 8 for no input IF count buffer on Test from pin 7 for VIN = 80 dBV, no modulation 80 15 110 Conditions Ratings min 17 50 15 47 typ 30 75 20 54 0.5 100 25 180 1.5 160 32 220 max 53 120 Unit mVrms mVrms dB dB % mVrms dBV mVrms
No.6854-2/10
Block Diagram
Vtune
FM Ant + BPF FM R-OUT 24 GND2 FM OSC ST SW VCO FF FF DECODER PHASE COMP VCC2 MUTE 23 22 21 20 19 18 17 16 15 14 PILOT DET L-OUT 13 FM DET ST + AM MONO + +
FM RF FM MIX TRIG
FF
LA1823
AM RF SD OSC BUFFER VCC1 3 4 5 6 GND1 IF BUFFER 7
AM MIX
ST
FM S-METER FM IF
AM DET AM IF
AGC
AM OSC REG 1 AM Ant + 2
8
9
10
11
12
+
AM / FM Mute IF Buff +
ST AM OSC Buff
10.7MHz
450kHz
VCC
ILA00300
No.6854-3/10
100 1000pF 220k 2SC2999 3pF 33k 1000pF + 0.22F + AM MONO FM Ant 1000 pF 1000 pF 2700pF + 6800pF FM R-OUT L-OUT 16 PHASE COMP 15 14 PILOT DET 13 FM DET 18 MUTE DECODER 17 6800pF 4.7F 19
3.3k
Vtune 33k 10 0.047F 0.47F + 3.3F
FM-DET
33k 0.047F 1.2k 10
FM OSC BUFF
SVC201
SVC201
BPF
FM-RF FM-OSC
8pF
12pF
Sample Application Circuit Diagram
1000pF
ST
24 GND2 FM OSC ST SW VCO FF VCC2
23
22
21
20
FM RF FM MIX TRIG
FF
FF
LA1823
AM RF SD OSC BUFFER VCC1 3 470pF 100pF
22pF
AM MIX
ST
FM S-METER FM IF IF BUFFER
AM DET AM IF
AGC
AM OSC REG 1 AM Ant 10 pF + 8pF SVC348 100k 0.047F + 0.047F 100F 10F
AM-OSC
GND1 5 6
2
4
7
8
9
10
11
12
100pF
10k 100 k 10.7MHz AM / FM IF Buff
+ AM-MIX 22F 450kHz SEEK
0.047F
ST AM OSC Buff
VCC
ILA00301
No.6854-4/10
LA1823
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-IF filter, discriminator : SK107M1-AE-10, CDF107F-AE-029 (Toko) SFE10.7MA5, CDA10.7MG1-A (Murata) : tentative * AM-OSC : SA-181 (Sumida) : L7BRS-3132AQ (Toko) S S 6-4 37 T VC 3 VC 3 4 Pin3 4 Pin3 3-1 74 T 2 2 0.06UEW fo = 796 kHz 6 VCC 6 VCC GND 1 GND 1 S S Qo 80 L = 140 H
ILA00302 * ILA00302
3-1 6-4 0.06-2UEW fo = 796 kHz Qo 65 L = 140 H
64 T 32 T
AM-MIX : SA-1136 (Sumida)
S 3 VCC 2 Pin9 1 6 GND S 4 CF
: PCFAZ-082 (Toko) 3-2 122 T 4-6 9T 2-1 62 T 0.06UEW fo = 450 kHz, Qo 65 180 pF internal
3 VCC 2 Pin9 1 S 6
ACFA-450L08 ILA00305
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
ILA00304
AM-IF filter : SFU450B (Murata) * MW Bar-antenna : C8E-A0105 (Toko) 1-2 67 T 3-4 9T S S fo = 796 kHz 1 2 3 4 Qu = 180 min VC GND Pin1 Pin2 L = 260H
*
ILA00306
No.6854-5/10
LA1823
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
1.2
1.2
1
Connect the AM antenna coil between this pin and pin 2 (Reg)
ILA00307
2
Reg
1.2
1.2
2
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
AM/FM-IF/MPX block VCC
5
FM-MIX output
2.4
2.2
5 Rout
Rout = 270
ILA00310
6
GND1
0
0
AM/FM-IF/MPX block ground
7
IF buffer output and mute switch
4.5
4.5
7
V7 1.3 V : IF buffer output and muting on
ILA00311
No.6854-6/10
LA1823
Pin number Quiescent voltage (V) AM FM
Function
Equivalent circuit
Remarks
8
8
Stereo indicator, AM-oscillator buffer output
Active-low Open-collector output AM oscillator signal is output in AM mode
ILA00312
4.5
4.5
9
4
9
AM-MIX output 4.5
4.5
Connect the AM mixer coil between this pin and pin 4 (VCC1)
ILA00313
10
10
FM-IF input
1.2
1.2
2
Rin
Rin = 330
ILA00314
11
11
AM-IF input
1.2
1.2
2
Rin
Rin = 2 k
ILA00315
12
AM-AGC output and FM signal meter output
0.4
0.1
12 R
Internal load resistance R = 16.6 k
ILA00316
13
13
FM-DET
3.9
3.7
Recommended ceramic discriminator : CDF107F-AE-029 (Toko) CDA10.7MG** (Murata)
ILA00317
No.6854-7/10
LA1823
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 1.2 R output 1.2
Rout
16
Rout = 7.5 k
( 17 )
ILA00320
18
18
MPX input
1.2
1.2
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
0.3
1.0
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.6854-8/10
LA1823
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 from 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
0.9
Rin = 1.8 k
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)
0 --20
THD(22.5k)
0 20 40 60 80 100 120 140
80
100
120
140
Ant input -- dBV EMF
ILA00326 5
Ant input -- dBV EMF
ILA00327 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
80%
1.0
Noise
--80 1
THD
VAGC
0.5
--100 --20
0
20
40
60
80
100
120
140
0 --20
0
20
40
60
80
100
120
0 140
Ant input -- dB/m
ILA00328
Ant input -- dB/m
ILA00329
No.6854-9/10
VAGC -- V
THD -- %
LA1823
60
FM st Characteristics
VCC=4.5V fc=98MHz, Vin=60dBV EMF 75kHz dev, L+R=90% Pilot=10% Sep R
5
FM st Characteristics
VCC=4.5V fc=98MHz, Vin=60dBV EMF 75kHz dev, L+R=90% Pilot=10%
50
4
40
THD -- %
Sep -- dB
Sep L
30
3
2
20
10
1
Sub ST Mono
0 0.01
0.1
1.0
10
100 ILA00330
0 0.01
0.1
1.0
Main
10
100 ILA00303
fm -- kHz
fm -- kHz
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.6854-10/10

▲Up To Search▲

Price & Availability of LA1823

	To Download LA1823 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .