Audio ICs Bus interface for car audio BA8272F The BA8272F is a bus interface IC (slave side) developed for car audio applications. When used with the BA8272F (master side), it is possible to construct a communication system for the deck and components such as power amplifiers, CD and MD changers, tuners and TVs using BUS ON, DATA, CLOCK and RESET signals. Applications Car audio systems Features 1) Allows construction of a communication system with BUS ON, DATA, CLOCK and RESET signals when used with the BA8270F (master side). Absolute maximum ratings (Ta = 25C) Recommended operating conditions (Ta = 25C) 920 2) Ideal for car audio systems. Audio ICs BA8272F Block diagram 921 Audio ICs Electrical characteristics (unless otherwise noted, Ta = 25C and VCC = 5.5V) 922 BA8272F Audio ICs BA8272F Measurement circuit 923 Audio ICs Measurement circuit switch operation table 924 BA8272F Audio ICs BA8272F Application example Operation notes (1) We guarantee the application circuit design, but recommend that you thoroughly check its characteristics in actual use. If you change any of the external component values, check both the static and transient characteristics of the circuit, and allow sufficient margin in your selections to take into account variations in the components and ICs. Note that Rohm has not fully investigated patent rights regarding this product. (2) Based on the EIAJ static electric destruction voltage measurement (C = 200pF and R = 0Ω), the withstanding voltage of pins 4, 5 and 12 has been determined to be 200V or less. Take due care. External dimensions (Units: mm) 925