SANYO LA1177 Datasheet
LA1177
Ordering number : EN2257B
Electronic Tuning-Use FM Front End
for Car Radio, Home Stereos
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)/3079TA/1268KI/8016KI, TS No.2257-1/8
Overview
• The LA1177 is an FM front end IC for use in car radio,
home stereo applications. It requires fewer external parts.
The on-chip oscillator and oscillation buffer facilitate
designing of electronic tuning sets.
Features
• Wide-band AGC circuit (Improvement in intermodulation, cross modulation characteristics).
• On-chip local oscillation buffer (For electronic tuning).
Functions
• Oscillator, oscillation buffer.
• Mixer.
• Wide-band AGC circuit.
• IF amplifier.
Package Dimensions
unit: mm
3017C-SIP9
[LA1177]
SANYO: SIP9
Specifications
Maximum Ratings
at Ta=25°C
Parameter Symbol Conditions Ratings Unit
Maximum supply voltage V
CC
max Pins 2, 9 10 V
Allowable power dissipation Pd max Ta≤70°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, fin=88MHz
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 VIN=0dBµ 7.7 8.0 V
AGC low-level voltage V
AGC
-L VIN=100dBµ 0.07 0.3 V
AGC mixer input voltage V
i AGC
V
AGC
≤2V, Pin 3 73 80 87 dBµ
IF saturation output voltage V
IF
-max VIN=1.0dBµ 108 112 116 dBµ
Input limiting voltage V
i lim
76 83 90 dBµ
Voltage gain VG V
IN
=65dBµ 88 92 96 dBµ
Local OSC output voltage V
OSC
No input, 75Ω termination 80 84 88 dBµ
LA1177
Evaluation Circuit and Internal Equivalent Circuit Block Diagram
Typical Voltage on Each Pin
No.2257-2/8
T1 : YT30224 (Mitsumi)
L1 : HU-50448 (Mitsumi)
CF1-CF2 : SFE10.7MA (Murata)
Unit (resistance : Ω, capacitance : F)
Pin No. Typical voltage Description Remarks
1 2.7V Mixer input
2 8.0V Mixer output
3 8.0V AGC input No input
4 2.0V IF input
5 0V GND
6 4.9V Oscillator base terminal
7 1.4V Oscillation buffer output
8 4.4V IF output
9 8.0V V
CC
Note : Extreme caution should be exercised when applying voltage across pin 9 (+)
and other pins as dielectric breakdown may occur.
LA1177
No.2257-3/8
Sample Printed Circuit Pattern
Sample Application Circuit
Unit (resistance : Ω, capacitance : F)
Unit (resistance : Ω, capacitance : F)
Cu-foiled area 85×82 mm
2
Loading...