SANYO LA1836, LA1836M Datasheet

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

Monolithic Linear IC

Ordering number : EN4787A

O3097HA (OT)/82294TH (OT) B8-0904, B8-0850 No. 4787-1/13

SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN

Single-Chip Home Stereo Electronic Tuning IC

LA1836, 1836M

SANYO: DIP30SD

[LA1836]

unit: mm

3073A-MFP30S

SANYO: MFP30S

[LA1836M]

Specifications

Maximum Ratings at Ta = 25°C

Note: * An 85 × 115 × 1.6 mm3glass-epoxy printed circuit board.

Operating Conditions at Ta = 25°C

Electrical Characteristics at Ta = 25°C, VCC= 7.0 V unless otherwise specified

(MFP package using the Yamaichi Electric IC-51-0302-426MF socket)

No. 4787-2/13

LA1836, 1836M

Parameter Symbol Conditions Ratings Unit

Maximum supply voltage V

CC

max 9.0 V

At Ta ≤ 70°C, on the recommended printed circuit board*

550 mW

Allowable power dissipation Pd max

[LA1836, LA1836M]

At Ta = 70°C, independent IC [LA1836M only] 320 mW
Operating temperature Topr –20 to +70 °C
Storage temperature Tstg –40 to +125 °C

Parameter Symbol Ratings Unit

Recommended supply voltage V

CC

7.0 V

Operating supply voltage range V

CC

op 6.5 to 8.5 V

Parameter Symbol Conditions min typ max Unit

[FM characteristics (mono): f

c

= 10.7 MHz, fm= 1 kHz, with the coil adjusted at V

REG

– V

AFC

= 0 V]

Quiescent current I

CCO

-FM No input 37 50 mA

Demodulator output V

O

-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

Total harmonic distortion

THD-FM (1) 100 dBµ, 100% mod, the pin 16 output 0.3 1.3 %

THD-FM (2) 100 dBµ, 200% mod, the pin 16 output 1.5 8.0 %
S/N ratio S/N-FM 100 dBµ, 100% mod, the pin 16 output 72 80 dB
AM suppression ratio AMR 100 dBµ, AM 30% mod, the pin 16 output 40 60 dB
Input limiting voltage –3dBL.S. 100 dBµ, referenced to 100% mod, a 3 dB down input 34 42 dBµ
LED on sensitivity SD-On-FM 46 56 66 dBµ
LED on bandwidth SD-BW 100 dBµ 90 125 170 kHz
IF count buffer output V

IFBuff

-FM 100 dBµ, the pin 11 output 80 120 160 mVrms

V

SM

-FM (1) 0 dBµ, the pin 12 output 0 0.5 1.0 V

S-meter output V

SM

-FM (2) 60 dBµ, the pin 12 output 1.8 3.2 4.5 V

V

SM

-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 dB
[FM characteristics (stereo): f

c

= 10.7 MHz, fm= 1 kHz, L + R = 90%, pilot = 10%, VIN= 100 dBµ]
Separation - L Sep-L L mod, the pin 17 output/pin 16 output 30 45 dB
Separation - R Sep-R R mod, the pin 16 output/pin 17 output 30 45 dB
Stereo on level ST-on The pilot modulation such that V7 < 0.7 V 1.8 3.6 6.0 %
Stereo off level ST-off The pilot modulation such that V7 > 4.5 V 2.5 %
Total harmonic distortion (main) THD-main The pin 16 output 0.3 1.3 %
Channel balance (main) C.B-main The pin 16 output/pin 17 output –1.5 0 +1.5 dB
Capture range C.R Pilot = 10% ±1.5 %
Adjacent channel interference

B.Rej. fs = 113 kHz, Vs = 90%, pilot = 10%, the pin 16 output 40 dB

rejection ration

Continued on next page.

Continued from preceding page.

No. 4787-3/13

LA1836, 1836M

Parameter Symbol Conditions min typ max Unit

[AM characteristics: f

c

= 1000 kHz, fm= 1 kHz]

Quiescent current I

CCO

-AM No input 29 42 mA

Detector output

V

O

-AM (1) 23 dBµ, 30% mod, the pin 16 output 25 45 90 mVrms

V

O

-AM (2) 80 dBµ, 30% mod, the pin 16 output 195 310 490 mVrms

S/N ratio

S/N-AM (1) 23 dBµ, 30% mod, the pin 16 output 16 20 dB
S/N-AM (2) 80 dBµ, 30% mod, the pin 16 output 48 54 dB

THD-AM (1) 80 dBµ, 30% mod, the pin 16 output 0.3 1.0 %

Total harmonic distortion

THD-AM (2) 100 dBµ, 30% mod, the pin 16 output (DIP) 0.4 1.2 %
THD-AM (2) 107 dBµ, 30% mod, the pin 16 output (MFP) 0.8 1.6 %

THD-AM (3) 80 dBµ, 80% mod, the pin 16 output 1.0 4.0 %
LED on sensitivity SD-On-AM 20 30 40 dBµ
Local oscillator buffer output V

OSC

-AM 80 dBµ, 30% mod, the pin 16 output 110 160 mVrms

Low band attenuation Low-Cut Referenced to f

m

= 1 kHz, the output when fm= 100 Hz 5 7 11 dB

IF count buffer output V

IFBuff

-AM 80 dBµ, unmodulated, the pin 11 output 140 200 280 mVrms

ST-IF output V

STIF

-AM 80 dBµ, unmodulated, the pin 8 output 8 17 24 mVrms

S-meter output

V

SM

-AM (1) 0 dBµ, unmodulated 0 0 0.2 V

V

SM

-AM (2) 40 dBµ, unmodulated 1.3 3.0 4.5 V

Block Diagram

Test Circuit Diagram

No. 4787-4/13

LA1836, 1836M

Unit (resistance: Ω, capacitance: F)

Unit (resistance: Ω, capacitance: F)