U4254BM-M Datasheet | Atmel

Features - - - - - - - High Dynamic Range for AM and FM Integrated AGC for FM High Intercept Point 3rd-order for FM FM Amplifier Adjustable to Various Cable Impedances High Intercept Point 2nd-order for AM Low-noise Output Voltage Low-power Consumption Electrostatic sensitive device. Observe precautions for handling. Low-noise AM/FM Antenna Impedance Matching IC U4254BM-M Description The U4254BM-M is an integrated low-noise AM/FM antenna impedance matching circuit in Bi CMOS technology. The device is designed specifically for car applications and is suitable for windshield and roof antennas. Figure 1. Block Diagram FMIN GND1 FMGAIN AGC VS 1 2 3 4 14 IAGC FMOUT 13 AGCADJ VREF2 VREF 12 VREF1 11 AMIN 8 AMOUT1 AMOUT 7 GND2 Rev. 4772B- AUDR- 11/03 Pin Configuration Figure 2. Pinning SO16 FMIN 1 2 16 NC 15 FMOUT 14 GND1 FMGAIN 3 AGC VREF2 NC 4 5 6 7 8 13 AGCADJ 12 VREF1 11 AMOUT1 10 AMOUT 9 GND2...