SANYO LA1178M Datasheet

LA1178M

Ordering number : EN2712A

FM Front End for Car Radio, Home Radio-Use

Monolithic Linear IC

SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters

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

93097HA (KT)/5099YT/N137KI, TS No.2712-1/7

Functions

• Double end type mixer • Oscillator

• Oscillator buffer • Wide-band AGC circuit

• IF amplifier

Features

• Excellent intermodulation characteristic (wide-band AGC
circuit)

• On-chip local oscillation buffer for electronic tuning.

Package Dimensions

unit: mm

3086-MFP10

[LA1178M]

SANYO: MFP10

Specifications
Maximum Ratings

at Ta=25°C

Parameter Symbol Conditions Ratings Unit

Maximum supply voltage V

CC

max Pins 2, 3, 10 10 V
Allowable power dissipation Pd max Ta≤75°C 440 mW
Operating temperature Topr –20 to +70 °C
Storage temperature Tstg –40 to +125 °C

Operating Conditions at Ta=25°C

Parameter Symbol Conditions Ratings Unit

Recommended supply voltage V

CC

8V

Operating voltage range V

CC

op 8 to 9 V

Electrical Characteristics at Ta=25°C, V

CC

=8V, fim=88MHz, See specified Test Circuit.

Parameter Symbol Conditions

Ratings

min typ max

Unit

Quiescent current I

CCO

No input 21 26 31 mA

AGC high-level voltage V

AGC

-H 0dBµ, pin 4 7.7 8.0 V

AGC low-level voltage V

AGC

-L 100dBµ, pin 4 0.07 0.3 V

AGC mixer input V

IN AGC

V

AGC

≤2V, Pin 4 67 74 81 dBµ

IF saturation output voltage V

IF

-max 110dBµ 108 112 116 dBµ

Input limiting voltage V

lim

81 88 95 dBµ
Voltage gain VG 65dBµ 84 88 92 dBµ
Local OSC output voltage V

OSC

No input, 75Ω termination 80 84 88 dBµ

Note) Extreme caution should be exercised when applying voltage across pin 10 and 3 as dielectric breakdown may occur.

LA1178M

Evaluation Circuit and Internal Equivalent Circuit Block Diagram

Typical Voltage on Each Pin and Pin Description

No.2212-2/7

Unit (resistance : Ω, capacitance : F)

Pin No. Typical voltage [V] Description Remarks

1 2.7 Mixer input
2 8.0 Mixer output
3 8.0 Mixer output
4 8.0 AGC input No input
5 2.0 IF amp input
6 0.0 GND
7 4.9 Oscillator base terminal
8 1.4 Oscillation buffer output
9 4.4 IF output

10 8.0 V

CC

LA1178M

No.2712-3/7

Pin Description

Pin No. Function Internal Equivalent Circuit Remarks

1 Mixer input

2 Mixer output

AGC pickup pin is
connected.

3 Mixer output

4 Wide-band AGC output

5 IF amp input

RIN≈330Ω

6 IF amp input

7 OSC

8 OSC buffer output

9 IF amp output

R

OUT

≈330Ω

10 V

CC

V

CC