LV25300M Sanyo Semicon Device, LV25300M Datasheet - Page 2

• Manufacturer Part Number: LV25300M
• Description: 1-chip Tuner IC
• Manufacturer: Sanyo Semicon Device

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FM IF
AM
PLL
• Wide band AGC sensitivity setting pin, and narrow band AGC sensitivity setting pin
• Local oscillator circuit (oscillator 1)
• AM/FM second mixing oscillator (oscillator 2)
• FM second mixing (FM mixer 2)
• Supports both FM Japan band and US band.
• AM first oscillator coil for AM LW, MW, and SW frequency divider circuit, internal frequency divider with
• Weather band
• IF limiter amplifier (IFAMP: Also runs in AM mode.)
• S-meter output (shared pin for AM), 6-stage pickup (VSM: for DSP)
• Dedicated FM S-meter (for DSP and diversity circuit)
• Coilless detector circuit
• Digital detection buffer output
• IF counter buffer output (also used for AM)
• SD (IF counter buffer ON level) adjustment
• SD output (active high) (also used for AM)
• Double balance mixer (first and second)
• Elimimated IF amplification (AM 450kHz) AM IFT
• Digital detection IF buffer output (also used for FM)
• IF AGC (controlled by narrow band S-meter output)
• RF AGC (Wide)
• Pin diode drive pin (antenna damping)
• Wide band S-meter output (shared pin for FM IF)
• Narrow band S-meter output (detected by AM IF second amplifier)
• IF counter buffer output function (shared pin for FM IF), directly connected to PLL counter
• SD (IF counter buffer ON Level) adjustment
• SD output (active high) (also used for FM)
• AM noise canceller trigger output pin
• Charge pump for high-speed locking
• Internal FET for active LPF
• Low radiation noise due to 3V operation
• 4-wire serial bus control circuit (SANYO’s original CCB bus format)
• Reference divider
• Programmable divider (pulse swallow type)
• Crystal oscillator circuit
• ADC (6/8bits × 2, selectable)
reduced number of varactor diode
- FM band selection signal detection and control circuits
- AM, SW1, and SW2 reception
- Weather band
- AM/FM RF AGC voltage
- FM/AM RF DAC (9 bits × 2)
LV25300M
No.8320-2/4
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