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Ordering number : EN5837
LA1828
Monolithic Linear IC
LA1828
Single-Chip Tuner IC for Portable Radio /Cassette Recorders with Manual Tuning
Functions
* AM: RF amplifier, mixer, oscillator, IF amplifier, detector, AGC, tuning display output RF amplifier, mixer, oscillator IF amplifier, quadrature detector, signal strength meter, tuning display output PLL stereo decoder, stereo display output, forced mono, internal VCO
Package Dimensions
unit:mm 3067-DIP24S
[LA1828]
24
[LA1828]
* FM-FE: * FM-IF: * MPX:
13
0.25
7.62
6.4
0.25
1 21.2
0.25
12
Features
* Single-chip tuner with AM, FM-FE/FM-IF, MPX circuitry * Built-in adjustment-free MPX-VCO (noceramic oscillator required) * Reduced FM-FE oscillation level * FM stereo indication and AM/FM tuning indication outputs can directly drive LEDs
0.1
0.51min
0.81
0.25
1.78
0.25
0.48-0.05
+0.15
0.95
0.15
3.3
0.25
3.9max
3.25
SANYO:DIP24S SANYO:DIP24S
Specifications
Maximum Ratings at Ta = 25C
Parameter Maximum supply voltage Indicator drive current Allowable power dissipation Operating temperature Storage temperature Symbol VCCmax ILED Pd max Topr Tstg pins 8, 9 Ta 70C Conditions Ratings 7.0 20 300 -20 to +70 -40 to +125 Unit V mA mW C C
Operating Conditions at Ta = 25C
Parameter Recommended supply voltage Operating supply voltage range Symbol VCC VCCop Conditions Ratings 4.5 2.5 to 6.0 Unit V V
SANYO Electric Co., Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
51198RM(KI) No. 5837-1/13
0.25-0.05
+0.15
Ordering number : EN5837
LA1828
Operating Characteristics at Ta = 25C, Vcc = 4.5V, in specified test circuit, using Yamaichi Electronics socket IC-179-2
Parameter Symbol Conditions min Ratings typ max Unit
[FM-FE characteristics]: fc = 98 MHz, fm = 1 kHz, 30% mod. Local oscillator voltage VOSC fOSC=108.7 MHz, pin 20 output *Measured with FET buffer (-10 dB gain) 3 dB sensitivity Effective sensitivity 3dB LS Qs 60 dB, 30% mod. output, -3 dB input Input for S/N = 30 dB 13 12 dB dB 40 80 160 mVrms
[FM-IF monaural characteristics]: fc = 10.7 MHz, fm = 1 kHz, 100% mod. Quiescent current Demdulator output Signal-to-noise ratio Total harmonic distortion (mono) 3 dB sensitivity TU-LED sensitivity ICCO (FM) VO S/N THD 3 dB LS SD-ON No input 100 dB, pin 16 output 100 dB, pin 16 output 100 dB, pin 16 output 100 dB, 100% mod.output, -3 dB input 21 8 130 62 16 190 70 0.4 32 33 1.2 42 23 260 mA mVrms dB % dB dB
[FM-IF stereo characteristics]: fc = 10.7 MHz, fm = 1 kHz, L+R = 90%, pilot = 10% Separation ST-LED sensitivity Total harmonic distortion (main) SEP ST-ON THD 100 dB, L-mod, pin 16/pin 17 output 100 dB, pilot modulation for pin 8 voltage < 0.5V 100 dB, main modulation, pin 16 output 25 1.5 40 3.5 0.5 5 18 50 15 47 8.5 40 85 20 53 0.5 0.5 26 1.3 1.5 6.3 1.2 15 70 130 dB % % mA mVrms mVrms dB dB % % dB
[AM characteristics]: fc = 1000 kHz, fm = 1 kHz, 30% mod. Quiescent current Demdulator output ICCO (AM) V O1 V O2 Signal-to-noise ratio S/N1 S/N2 Total harmonic distortion THD1 THD2 TU-LED sensitivity SD-ON No input 23 dB, pin 16 output 80 dB, pin 16 output 23 dB, pin 16 output 80 dB, pin 16 output 80 dB, pin 16 output 107 dB, pin 16 output
Pin Description and Quiescent Voltage at Vcc = 4.5V
Quiescent Pin number Function voltage (V) AM FM 2 AM antenna coil connected between pins 1 and 2 (reg) Equivalent circuit Remarks
1
AM RF input
1.3
1.3
1
A10247
Vreg=1.3V
2
Reg
1.3
1.3
2
A10248
51198RM(KI) No. 5837-2/13
Ordering number : EN5837
LA1828
Continued on next page Continued from preceding page
Quiescent Pin number Function voltage (V) AM FM Oscillator coil connected 3 4 between pins 3 and 4 (VCC1) Equivalent circuit Remarks
3
AM-OSC
4.5
4.5
A10249 4 VCC1 4.5 4.5 4 5 AM/FM-IN/MPX block VCC Mixer coil connected between pins 5 and 4 (VCC1)
5
FM mixer output
4.5
4.5
A10250 6 GND1 0 0 AM/FM-IN/MPX section ground Mixer coil connected 7 4 between pins 7 and 4 (VCC1)
7
AM mixer output
4.5
4.5
A10251 Active low 8 8 Tu-LED output 4.5 4.5 Open-collector output can directly drive LED (IC max = 20 mA)
A10252 Active low 9 ST-LED output 9 and AM-IF output 4.5 4.5 Open-collector output can directly drive LED (IC max = 20 mA) In AM operation, AM-IF signal (450 kHz) is output here.
A10253
Continued on next page
51198RM(KI) No. 5837-3/13
Ordering number : EN5837
LA1828
Continued from preceding page
Quiescent Pin number Function voltage (V) AM FM RIN = 330 10 10 FM-IF input 1.3 1.3 2 A10254 Equivalent circuit Remarks
RIN
RIN = 2 k 11 11 AM-IF input 1.3 1.3 2 A10255
RIN
Internal load impedance R = 16.6 k AM-AGC output 12 and FM S meter output 0.7 0.2 R 12
A10256 Detector coil connected between pins 13 and 4 (VCC1)
13
13
FM detector
4.5
4.5
A10257 Mono mode is forced on by connecting pin 14 to ground.
14 Pilot tone 14 detector filter and forced mono switching A10258 2.9 3.8
15 Phase 15 comparator filter and AM/FM switching A10259 0 3.8
FM reception mode is enabled when pin 15 is open. AM reception mode is enabled when pin 15 is connected to ground.
Continued on next page
51198RM(KI) No. 5837-4/13
Ordering number : EN5837
LA1828
Continued from preceding page
Quiescent Pin number Function voltage (V) AM FM ROUT = 7.5 k Equivalent circuit Remarks
16 17
L output R output
16 1.4 1.4 ROUT 17
A10260
RIN = 50 k 18 18 MPX input 1.3 1.3 RIN A10261
Output impedance AM: ROUT = 50 k FM detector 19 output and AM detector output 0.5 1.5 ROUT(FM) 19 ROUT(AM) A10262 FM: ROUT = 500 Capacitance between pin 19 and ground should be optimzed for the best separation characteristics.
21
Colpitts oscillator circuit FM oscillator coil connected to pin 20.
20
FM-OSC
4.5
4.4
20
A10263 FM-FE block VCC Power is supplied from pin 4 R 21 VCC2 4.5 4.4 21 4 A10264 (VCC1) via external resistor (10 ).
22
FM-RF output
4.5
4.4
22
21
FM RF coil connected between pins 22 and 21 (VCC2).
24
FM-RF input
0
1.0
24
RIN = 1.8 k
A10265 23 GND2 0 0 FM-FE brock ground
51198RM(KI) No. 5837-5/13
Ordering number : EN5837
LA1828
Coil specifications (bottom view)
* FM-BPF: SA-309 (Sumida) 88 to 108 MHz * FM-RF: SA-149 (Sumida) 3.6 mm dia., air core, 0.6 mm wire, 4 1/2 T * FM-OSC: SA-151 (Sumida) 3.6 mm dia., air core, 0.6 mm wire, 3 1/2 T * FM-Mix: SA-165 (Sumida) * AM-OSC: SA-181 (Sumida)
S 3
S 4 - 2T - 12T 0.12 UEW f0 = 10.7 MHz Q0 50 With 100 pF internal capacitor
S 3 4 - 37T - 74T 0.06 UEW f0 = 796 kHz Q0 80 L = 140 H
2
2
1
6 A10395
1
6 S A10269
* FM-Det: SA-1134 (Sumida)
* AM-IFT: SA-1136 (Sumida)
S 3 4 - 12T 0.10 UEW f0 = 10.7 MHz Q0 70 With 82 pF internal capacitor 3
S 4 - 122T - 9T - 62T 0.06 UEW f0 = 450 kHz Q0 65 With 180 pF internal capacitor
2
2
1 S
6 A10267
1
6 A10270
* FM-IF filter: SFE10.7MS2 (Murata) * Poly-varicon: FT-2217 (Toko) or PVC-22KTL (Mitsumi) * MW bar antenna: TYA-1005 (Mitsumi)
* AM-IF filter: SFU450B (Murata)
- 68T - 9T f0 = 796 kHz Q0 230 L = 260 H 1 S 2 3 S A10394 4
51198RM(KI) No. 5837-6/13
Ordering number : EN5837
LA1828
* FM-Mix: YT-30224 (Mitsumi) for DUT * AM-OSC: HW-50425 (Mitsumi) for DUT
S 3 4 - 2T - 8T 0.12 UEW f0 = 10.7 MHz Q0 = 80 With 150 pF internal capacitor 3
S 4 - 2T - 9T - 86T Q0 80 L = 270 H
2
2
1 S
6 S A10266
1
6 A10271
* FM-Det: YT-30103 (Mitsumi) for DUT
* AM-IFT: YD-1073-1 (Mitsumi) for DUT
S 3 4 - 10T f0 = 10.7 MHz Q0 = 90 With 82 pF internal capacitor 3 4 - 58T - 7T - 94T f0 = 450 kHz With 180 pF internal capacitor
2
2
1 S
6 A10268
1 S
6 SFU450B A10272
51198RM(KI) No. 5837-7/13
Block Diagram
Ordering number : EN5837
FM Ant
+
+
B.P.F.
R-OUT L-OUT
AM
FM
MN
ST
24
23
22
21
20
19
+ 18
17
16
15 PHASE COMP
14
13
FM RF
GND2
VCC2
FM OSC TRIG ST-SW
DECODER
DET
VCO
FF
FF
FF PILOT DET
FM MIX
LA1828
AM MIX AM RF REG AM OSC VCC1 GND1 TUN LED ST LED
S-METER
DET AM-IF
AGC
FM-IF
1
AM Ant
2
3
4
5
6
7
8
9
10
11
12
AM/FM TUN
FM ST 10.7M 450k
V-AGC V-SM
+
51198RM(KI) No. 5837-8/13
+ +
VCC
A10273
0dB 100
+5.0V
amp L.P.F R-OUT 5pF
Test Circuit
FM-Vosc (108.7MHz) 2SK315 100k amp L.P.F L-OUT
Ordering number : EN5837
10 1000pF 10 1000pF 0.47F
+ +
0.1F AM FM MN
SA-309 3.3k 15pF 2200pF 30pF 4.7F FM-OSC SA-151 18pF 6800pF 6800pF
+
FM ant-input (98MHz)
3.3F ST
2.2k FM-DET YT-30103
B.P.F.
FM-RF SA-149
24
23
22
21
20
19
+
1000pF
18
17
16
15
14
13
LA1828
LA1828
1
10pF
2
3
4
5
6
7
8
9
10
11
12
AM ant-input (1000kHz)
0.047F
V-REG 24pF 10.7M FM-IFT YT-30224 AM-IFT YD-1073-1
51 AM/FM SD 1k FM ST 1k 22F
+
V-SM
39mH
+_ +
100F 0.047F
AM-OSC HW-50425
10F
0.047F
FM IF-input (10.7MHz)
300 VCC=4.5V 51 0.047F
A10274
51198RM(KI) No. 5837-9/13
Ordering number : EN5837
FM antenna
10 1000pF 10 1000pF 0.47F
+ +
0.1F AM FM MN 3.3F ST
SA-309 3.3k 15pF 1800pF 30pF 4.7F FM-OSC SA-151 18pF 6800pF 6800pF
+
2.2k FM-DET SA-1134
Sample Application Circuit
B.P.F.
FM-RF SA-149
24
23
22
21
20
19
+
18
1000pF
17
16
15
14
13
LA1828
LA1828
1
100
2
3
4
5
6
7
8
9
10
11
12
AM antenna TYA-1005
390pF
V-REG FM ST 1k 450KHz 22F AM/FM SD 1k
+
27pF FM-IFT SA-165 10.7MHz AM-IFT SA-1136
V-SM
18pF
+ +
100F 0.047F
AM-OSC SA-181
10F
0.047F
VCC=4.5V
A10275
51198RM(KI) No. 5837-10/13
Ordering number : EN5837
LA1828
VCC =4.5V -10 fc = 98MHz fm =1kHz,22.5kHzdev
-20 0
FM characteristics
Total harmonic distortion, THD - %
5
FM characteristics
VCC =4.5V fc = 98MHz fm =1kHz VSM
2.5
Signal
4
Output - dBm
-30 -40
3
1.5
-50 -60 -70 -80 -90 -100 -20 0 20 40
2
1.0
1
THD=75kHzdev
THD=25kHzdev
0 20 40 60 80 100 120
0.5
Noise
60 80 100 120 140
0 -20
0 140
ANT input - dB
80
ANT input - dB
0 -10
5
FM Vcc characteristics
Total harmonic distortion, THD - %
fc = 98kHz VIN =60dB 70 fm =1kHz,22.5kHzdev
60
fc = 98MHz VIN =60dB fm = 1kHz
FM Vcc characteristics
S/N
VO
4
-20 -30 -40 -50 -60
50 40 30 20 10 0 1 2 3 4 5 6
Output, Vo - dBm
Qs,Ls,SD - dB S/N - dB
3
2
SD
LS QS
1
THD=75kHzdev
-70 -80 7
THD = 22.5kHz dev
0 0 1 2 3 4 5 6 7
Power supply voltage, Vcc - V
30
Power supply voltage, Vcc - V
80
FM Vcc characteristics
VCC = 3V No input fm = 1kHz
FM characteristics
fc =4.5kHz VIN =60dB fm =1kHz,22.5kHzdev 70
60
Quiescent current Icco - mA
S/N
Qs,Ls,SD - dB S/N - dB
20
50 40 30 20 10
10
SD
LS
QS
90 100 110
0 1
2
3
4
5
6
7
0 80
Power supply voltage, Vcc - V
10
Reception frequency, fr - MHz
60
MPX characteristics
MPX characteristics
Total harmonic distortion, THD - %
VCC =4.5V 7 VIN =60dB fc =98MHz 5 L+R = 90% PILOT=10%
3
VCC =4.5V VIN =60dB fc = 98MHz 50 L+R = 90% PILOT=10%
Sep - R Sep - L
Separation - dB
2
40
SUB
1.0
ST
MONO
MAIN
30
7 5 3
2 0.1 0.01 2 3
20
10
5 7 0.1
23
5 7 1.0
23
5 7 10
23
0 0.01 2 3
5 7 0.1
23
5 7 1.0
23
5 7 10
23
Modulation frequency, fm - kHz
Modulation frequency, fm - kHz
51198RM(KI) No. 5837-11/13
S meter voltage, Vsun- V
2.0
t Ou AM
Ordering number : EN5837
LA1828
VCC =4.5V -10 fc =1MHz fm=1kHz,30%mod
-20 -30 0
AM characteristics
Signal
2.0
AM characteristics
VCC =3V fc =1MHz
-40 -50 -60 -70 -80 -90 -100 0 20 40 60 80 100 120 140
AGC voltage, VAGC - V
1.5
Output - dBm
1.0
Noise
0.5
0 0
20
40
60
80
100
120
140
ANT input - dB/m
5
ANT input - dB/m
VCC =4.5V fc =900kHz -10 fm=1kHz,30%mod
-20 -30 0
AM characteristics
VCC =4.5V fc =1MHz fm=1kHz
AM characteristics
Signal
Total harmonic distortion, THD - %
4
Output - dBm
IF
3
-40 -50 -60 -70 -80 -90
Be at
2
1
T
=8 HD
0%
THD=30%
0 0 20 40 60 80 100 120 140
-100 0
20
40
60
80
100
120
140
ANT input - dB/m
70
ANT input - dB/m
-10 -20 -30 -40 -50 -60 -70 -80 7 5
AM VCC characteristics
VO
SD
AM VCC characteristics
fc =1MHz VIN =74dB/m fm=1kHz,30%mod
Total Harmonic distortion, THD - %
fc =1MHz VIN =74dB/m 60 fm=1kHz,30%mod
50 40 30 20 10 0 0
Maximum sensitivity (input for 20 mV output)
25
Sensitivity - dB/m S/N - dB
QS
Detector output VO - dBm
4
20
3
15
S/N
2
ICCO
10
1
THD= 80%
5
THD=30%
1 2 3 4 5 6 0 0 1 2 3 4 5 6 0 7
Power supply voltage, Vcc - V
80
Power supply voltage, Vcc - V
AM characteristics
VCC =4.5V VIN=74dB/m 70 fm=1kHz,30%mod
60
Sensitivity - dB/m S/N - dB
SD
50 40 30 20 10 0 400
QS
S/N
Maximum sensitivity (input for 20 mV output)
600
800
1000
1200
1400
1600
1800
Reception frequency, fr - kHz
51198RM(KI) No. 5837-12/13
Quiescent current, ICCO - mA
Ordering number : EN5837
LA1828
s No products described or contained herein are intended for use in surgical implants, life-support systems, aerospace equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like, the failure of which may directly or indirectly cause injury, death or property loss. s Anyone purchasing any products described or contained herein for an above-mentioned use shall: Accept full responsibility and indemnify and defend SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors and all their officers and employees, jointly and severally, against any and all claims and litigation and all damages, cost and expenses associated with such use: Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of their officers and employees jointly or severally. s 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 May, 1998. Specifications and information herein are subject to change without notice.
51198RM(KI) No. 5837-13/13 PS

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