LA1845NV Datasheet (Sanyo Semicon Device) - Single-Chip Home Stereo IC

LA1845NV, Single-Chip Home Stereo IC

Pin No.

1 Pin function FM IF input Pin voltage Vreg Equivalent circuit Notes Input impedance ri = 330Ω 1 3 2 AM mixer output VCC Connect the mixer coil between this pin and VCC 2 3 REG 2.1 3 Vreg = 2.1V 4 AM IF input Vreg Input impedance ri = 2kΩ 4 5 6 7 GND Tu-LED ST-LED/AF-IF output

Ordering number : ENN 7931 www.DataSheet4U.com 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

LA1845NV 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 i