Bipolar Linear Integrated Circuit Silicon Monolithic
3V AM/FM 1 Chip Tuner IC (for Digital Tuning System)

TA2149BN, TA2149BFN are AM/FM 1 chip tuner ICs, which are designed for portable Radios and 3 V Head phone Radios. This is suitable for Digital Tuning System Applications. FM Local Oscillation Voltage is set up low relativity, for NEW FCC.

Functions
For NEW FCC.
Suitable for combination with Digital Tuning System which is included IF Counter.
 
 Adjustable for IF count output sensitivity by external resistance of pin 17 (FM only).
One terminal type AM/FM IF count output for IF counter of Digital Tuning System.

  FM: 1.3375 MHz (1/8 dividing)
 
 AM: 450 kHz
Built-in Mute Circuit for IF count output.
For adopting ceramic Discriminator, it is not necessary to adjust the FM Quad Detector Circuit.
Built-in FM MPX VCO circuit.
Built-in one terminal type AM/FM Local Oscillator Buffer
Output for Digital Tuning System Applications.
 
 Built-in 1/16 Pre-scaler for FM Local OSC Buffer.
Built-in AM Low cut circuit.
Low supply current. (VCC= 3 V, Ta = 25°C)
  ICCq(FM) = 13 mA (Typ.)
  ICCq(AM) = 8.5 mA (Typ.)
Operating Supply voltage range: VCC= 1.8~7 V (Ta = 25°C)