LA1845NV Datasheet, PDF (1/10 Pages) Sanyo Semicon Device – Single-Chip Home Stereo IC

Ordering number : ENN*7931
LA1845NV ^{Monolithic Linear IC}
Single-Chip Home Stereo IC
The LA1845NV is designed for use in mini systems and is a single-chip tuner IC that provides electronic tuning
functions using SD/IF-count technique. It incorporates a pilot canceler and an adjustment-free MUX VCO circuit,
thus allows additional parts to be reduced.
Functions
• AM : RF amplifier, mixer, oscillator, IF amplifier, detector, AGC, SD, oscillator buffer, IF buffer, stereo IF output,
AGC time constant switch
• FM IF : IF amplifier, quadrature detector, S-meter, SD (signal detection), S-curve detection, IF buffer output
• MPX : PLL stereo decoder, stereo display, forced monaural, VCO stop, audio muting, adjacent channel interference
rejection function, pilot canceler
Features
• Integrated MPX VCO (ceramic resonators are no longer required.)
• Built-in adjacent channel interference rejection function (114kHz, 190kHz)
• Supports both SD and IF-count techniques
• Both FM SD sensitivity and bandwidth can be set
• Pilot canceler built in.
Maximum Ratings at Ta = 25°C
Parameter
Maximum Power Supply Voltage
Allowable Power Consumption
Symbol
VCC max
Pd max
Operating Temperature
Storage Temperature
Topr
Tstg
Conditions
Ta = 80°C with board
114.3mm×76.1mm×1.6mm material :
Glass epoxy resin
Ratings
Unit
6
V
360
mW
-20 to +80
°C
-40 to +125
°C
Operating Conditions at Ta = 25°C
Parameter
Recommended Supply Voltage
Operating Supply Voltage Range
Symbol
VCC
VCC op
Ta = 80°C
Conditions
Ratings
Unit
5
V
4.3 to 5.5
V
91004 JO IM No.7931-1/10