Ordering number : EN4787A
Monolithic Linear IC
LA1836, 1836M
Single-Chip Home Stereo Electronic Tuning IC
Overview
AM: RF amplifier, mixer, oscillator (with ALC), IF amplifier, detector, AGC, oscillator buffer, tuning indicator (narrow-band SD), IF buffer output, IF output for AM stereo
•FM IF: IF amplifier, quadrature detector, band muting, tuning indicator, IF buffer output, S-meter
•MPX: PLL stereo decoder, stereo indicator, forced mono, VCO stop function, adjacent channel interference rejection function (114 kHz), post-amplifier (with muting function)
Features
•Reduced number of adjustments (adjustment-free MPX VCO: ceramic resonator adopted)
•Tuning indicator pin (Can be used as a narrow-band stop signal and as a muting output driver.)
•Variable FM stop sensitivity and band
•Variable AM stop sensitivity
•Built-in AM local oscillator buffer
•Variable AM low cut control
Package Dimensions
unit: mm
3196-DIP30SD
[LA1836]
SANYO: DIP30SD
unit: mm
3073A-MFP30S
[LA1836M]
SANYO: MFP30S
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
O3097HA (OT)/82294TH (OT) B8-0904, B8-0850 No. 4787-1/13
LA1836, 1836M
Specifications
Maximum Ratings at Ta = 25°C
Parameter |
Symbol |
Conditions |
Ratings |
Unit |
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Maximum supply voltage |
VCC max |
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9.0 |
V |
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At Ta ≤ 70°C, on the recommended printed circuit board* |
550 |
mW |
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Allowable power dissipation |
Pd max |
[LA1836, LA1836M] |
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At Ta = 70°C, independent IC [LA1836M only] |
320 |
mW |
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Operating temperature |
Topr |
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–20 to +70 |
°C |
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Storage temperature |
Tstg |
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–40 to +125 |
°C |
Note: * An 85 × 115 × 1.6 mm3 glass-epoxy printed circuit board.
Operating Conditions at Ta = 25°C
Parameter |
Symbol |
Ratings |
Unit |
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Recommended supply voltage |
VCC |
7.0 |
V |
Operating supply voltage range |
VCC op |
6.5 to 8.5 |
V |
Electrical Characteristics at Ta = 25°C, VCC = 7.0 V unless otherwise specified (MFP package using the Yamaichi Electric IC-51-0302-426MF socket)
Parameter |
Symbol |
Conditions |
min |
typ |
max |
Unit |
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[FM characteristics (mono): fc = 10.7 MHz, fm = 1 kHz, with the coil adjusted at VREG – VAFC = 0 V] |
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Quiescent current |
ICCO-FM |
No input |
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37 |
50 |
mA |
Demodulator output |
VO-FM |
100 dBµ, 100% mod, the pin 16 output |
730 |
1100 |
1460 |
mVrms |
Channel balance (mono) |
C.B-mono |
100 dBµ, 100% mod, the pin 16 output/pin 17 output |
–1.5 |
0 |
+1.5 |
dB |
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Total harmonic distortion |
THD-FM (1) |
100 dBµ, 100% mod, the pin 16 output |
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0.3 |
1.3 |
% |
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THD-FM (2) |
100 dBµ, 200% mod, the pin 16 output |
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1.5 |
8.0 |
% |
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S/N ratio |
S/N-FM |
100 dBµ, 100% mod, the pin 16 output |
72 |
80 |
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dB |
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AM suppression ratio |
AMR |
100 dBµ, AM 30% mod, the pin 16 output |
40 |
60 |
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dB |
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Input limiting voltage |
–3dBL.S. |
100 dBµ, referenced to 100% mod, a 3 dB down input |
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34 |
42 |
dBµ |
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LED on sensitivity |
SD-On-FM |
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46 |
56 |
66 |
dBµ |
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LED on bandwidth |
SD-BW |
100 dBµ |
90 |
125 |
170 |
kHz |
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IF count buffer output |
VIFBuff-FM |
100 dBµ, the pin 11 output |
80 |
120 |
160 |
mVrms |
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VSM-FM (1) |
0 dBµ, the pin 12 output |
0 |
0.5 |
1.0 |
V |
S-meter output |
VSM-FM (2) |
60 dBµ, the pin 12 output |
1.8 |
3.2 |
4.5 |
V |
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VSM-FM (3) |
100 dBµ, the pin 12 output |
3.5 |
4.2 |
5.0 |
V |
Muting attenuation |
Mute-Att |
100 dBµ, 100% mod, the pin 16 output |
80 |
95 |
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dB |
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[FM characteristics (stereo): fc = 10.7 MHz, fm = 1 kHz, L + R = 90%, pilot = 10%, VIN = 100 dBµ] |
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Separation - L |
Sep-L |
L mod, the pin 17 output/pin 16 output |
30 |
45 |
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dB |
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Separation - R |
Sep-R |
R mod, the pin 16 output/pin 17 output |
30 |
45 |
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dB |
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Stereo on level |
ST-on |
The pilot modulation such that V7 < 0.7 V |
1.8 |
3.6 |
6.0 |
% |
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Stereo off level |
ST-off |
The pilot modulation such that V7 > 4.5 V |
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2.5 |
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% |
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Total harmonic distortion (main) |
THD-main |
The pin 16 output |
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0.3 |
1.3 |
% |
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Channel balance (main) |
C.B-main |
The pin 16 output/pin 17 output |
–1.5 |
0 |
+1.5 |
dB |
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Capture range |
C.R |
Pilot = 10% |
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±1.5 |
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% |
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Adjacent channel interference |
B.Rej. |
fs = 113 kHz, Vs = 90%, pilot = 10%, the pin 16 output |
|
40 |
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dB |
rejection ration |
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Continued on next page.
No. 4787-2/13
LA1836, 1836M
Continued from preceding page.
Parameter |
Symbol |
Conditions |
min |
typ |
max |
Unit |
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[AM characteristics: fc = 1000 kHz, fm = 1 kHz] |
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Quiescent current |
ICCO-AM |
No input |
|
29 |
42 |
mA |
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Detector output |
VO-AM (1) |
23 dBµ, 30% mod, the pin 16 output |
25 |
45 |
90 |
mVrms |
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VO-AM (2) |
80 dBµ, 30% mod, the pin 16 output |
195 |
310 |
490 |
mVrms |
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S/N ratio |
S/N-AM (1) |
23 dBµ, 30% mod, the pin 16 output |
16 |
20 |
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dB |
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S/N-AM (2) |
80 dBµ, 30% mod, the pin 16 output |
48 |
54 |
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dB |
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THD-AM (1) |
80 dBµ, 30% mod, the pin 16 output |
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0.3 |
1.0 |
% |
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Total harmonic distortion |
THD-AM (2) |
100 dBµ, 30% mod, the pin 16 output (DIP) |
|
0.4 |
1.2 |
% |
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THD-AM (2) |
107 dBµ, 30% mod, the pin 16 output (MFP) |
|
0.8 |
1.6 |
% |
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THD-AM (3) |
80 dBµ, 80% mod, the pin 16 output |
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1.0 |
4.0 |
% |
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LED on sensitivity |
SD-On-AM |
|
20 |
30 |
40 |
dBµ |
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Local oscillator buffer output |
VOSC-AM |
80 dBµ, 30% mod, the pin 16 output |
110 |
160 |
|
mVrms |
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Low band attenuation |
Low-Cut |
Referenced to fm = 1 kHz, the output when fm = 100 Hz |
5 |
7 |
11 |
dB |
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IF count buffer output |
VIFBuff-AM |
80 dBµ, unmodulated, the pin 11 output |
140 |
200 |
280 |
mVrms |
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ST-IF output |
VSTIF-AM |
80 dBµ, unmodulated, the pin 8 output |
8 |
17 |
24 |
mVrms |
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S-meter output |
VSM-AM (1) |
0 dBµ, unmodulated |
0 |
0 |
0.2 |
V |
|
VSM-AM (2) |
40 dBµ, unmodulated |
1.3 |
3.0 |
4.5 |
V |
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No. 4787-3/13
LA1836, 1836M
Block Diagram
Unit (resistance: Ω , capacitance: F)
Test Circuit Diagram
Unit (resistance: Ω , capacitance: F)
No. 4787-4/13
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