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=25C
Parameter
Symbol
Conditions
Ratings
Unit
Maximum supply voltage
V
CC
max
Pins 2, 3, 10
10
V
Allowable power dissipation
Pd max
Ta
75C
440
mW
Operating temperature
Topr
20 to +70
C
Storage temperature
Tstg
40 to +125
C
Operating Conditions
at Ta=25C
Parameter
Symbol
Conditions
Ratings
Unit
Recommended supply voltage
V
CC
8
V
Operating voltage range
V
CC
op
8 to 9
V
Electrical Characteristics
at Ta=25C, 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
0dB, pin 4
7.7
8.0
V
AGC low-level voltage
V
AGC
-L
100dB, pin 4
0.07
0.3
V
AGC mixer input
V
IN AGC
V
AGC
2V, Pin 4
67
74
81
dB
IF saturation output voltage
V
IF
-max
110dB
108
112
116
dB
Input limiting voltage
V
lim
81
88
95
dB
Voltage gain
VG
65dB
84
88
92
dB
Local OSC output voltage
V
OSC
No input, 75
termination
80
84
88
dB
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 :
, 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
330
6
IF amp input
7
OSC
8
OSC buffer output
9
IF amp output
ROUT
330
10
V
CC
V
CC
LA1178M
No.2712-4/7
Input/Output Characteristic
Mixer input level dB
IF output level dB
Mixer Input/Output Characteristic
Mixer input level dB
Mixer output level dB
Load Capacitance Characteristic of OSC Buffer
Load capacitance pF
OSC buffer output level mVrms
Reduced Voltage Characteristic of OSC Frequency
Supply voltage, V
CC
V
OSC frequency variation kHz
Reduced Voltage Characteristic of OSC Buffer Output
Supply voltage, V
CC
V
OSC buffer output level mVrms
Load Resistance Characteristic of OSC Buffer
Load resistance, R
L
OSC buffer output level mVrms
AGC Interting Level Characteristic
Detuning frequency MHz
Mixer input level dB
AGC Characteristic
Mixer input level dB
AGC output voltage V
AGC output voltage V
LA1178M
No.2712-5/7
IF Amp Frequency Characteristic
Current Drain Characteristic
Frequency, f MHz
Gain, VG dB
Temperature Characteristic of Mixer Input/Output
Mixer input level dB
Mixer output level dB
Current drain, I
CC
mA
Temperature Characteristic of Mixer Input/Output
at which AGC Voltage is Inverted
Ambient temperature, Ta C
Mixer input level at which AGC voltage is
inverted dB
Temperature Characteristic of IF Amp Input/Output
IF-amp input level dB
Mixer input level dB
Supply voltage,V
CC
V
IF-amp output level dB
Temperature Characteristic of V
AGC-Lo
Voltage
Ambient temperature, Ta C
IF-amp output level dB
Temperature Characteristic of Input/Output
IF-amp input level dB
IF-amp output level dB
IF-amp output level dB
IF Amp Input/Output Characteristic
LA1178M
No.2712-6/7
Smith Chart
IF AMP
Input/Output impedance (LA1175)
IF AMP
Input impedance (LA1178M)
IF AMP
Output impedance (LA1178M)
Mixer
Input impedance : f=80 to 110MHz
f=10.7MHz
Temperature Characteristic of V
AGC-Hi
Voltage
Ambient temperature, Ta C
V
AGC-Hi
voltage V
Imtermodulation Characteristic
Undesired signal input level dB
30dB QS sensitivity dB
Input/Output Characteristic
Mixer input level dB
Demodulation output level dBm
Temperature Characteristic of OSC Buffer Output
Ambient temperature, Ta C
OSC buffer output variation dB
LA1178M
No.2712-7/7
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 lose.
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 responsibilty 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.
Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guarant-
eed 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 September, 1997. Specifications and information herein are
subject to change without notice.
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