SA2104CS

SA2104C/SA2104CS 3V AM/FM +MPX TUNER IC (FOR DIGITAL TUNING SYSTEM) DESCRIPTION The SA2104C/SA2104CS are single-chip tuner ICs that incorporate FM/AM and MPX circuits, which are designed for portable radios and 3V headphone radios. The SA2104C/SA2104CS are suitable for digital tuning system applications. FM local oscillation voltage is set up low relativity, for NEW FCC. S D IP -24-300-1.778 FEATURES * Operating supply voltage range: VCC=1.8~10V (Tamb=25°C) * For NEW FCC * FM/AM and MPX integrated in a single-chip. * Build in FM/AM IF count buffer. FM: 1.3375MHz (1/8 dividing) AM: 450kHz * Build in mute circuit for IF count output according to field strength. * Build in FM MPX VCO circuit * Build in FM/AM OSC buffer output for DTS applications. * Build in AM low cut circuit * Build in stereo indicator. * Low supply current. (VCC=3V, Tamb=25°C) ICCq (FM)=11.0mA (Typ.) ICCq (AM)=7.5mA (Typ.) SSOP-24-300-0.65 ORDERING INFORMATION Part No. SA2104C SA2104CS Package SDIP-24-300-1.778 SSOP-24-300-0.65 BLOCK DIAGRAM 24 21 FM FM RFOUT OSC 19 OSC OUT 18 17 ST LED IF REQ 15 MPX IN 23 RF VCC 2 FM FM RF RFIN 1 RF GND 20 AM OSC AM OSC FM OSC BUF ST SW IF REQ AF ST/MO FM/AM FM MIX BUF Level det IF BUFF 1/8 Stereo Decoder 14 LPF1 13 LPF2 11 AM DET MUTE ROUT 12 LOUT 22 AM RFIN AM AM FM MIX AGC AM IF FM IF DET MIX OUT 4 AGC 9 AM IFIN 6 FM IFIN 7 QUAD 10 DET OUT 16 VCC 5 GND 8 AM LOW CUT 3 HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.si...