Audio ICs 6V / 800mW single-channel power amplifier BA527 The BA527 is a monolithic power amplifier designed for portable cassette players and radio cassette players. With a 6V power supply, it has a rated output of 800mW into a 4Ω load (THD = 10%). It is a high-grade design that generates almost no audible switching noise, and is ideal for high-end compact cassette players (including those with radio). Applications Portable cassette recorders and radio cassette recorders Features 1) Rated power output is 800mW (VCC = 6V and a 4Ω load (THD = 10%). Maximum output is 1300mW. 2) Pin compatible with the Rohm BA526 power amplifier, and can be interchanged to suit the application. 3) Compact 9-pin SIP package that does not require a heatsink. Allows more compact set designs, and is easy to mount. 4) High ripple rejection ratio (55dB) and generates almost no “pop” noise. 5) Excellent low voltage characteristics (starts operating at SV 2.8V). Block diagram 383 Audio ICs BA527 FInternal circuit configuration FAbsolute maximum ratings (Ta = 25_C) FElectrical characteristics (unless otherwise noted, Ta = 25_C, VCC = 6V, RL = 4Ω, f= 1kHz and RNF = 220Ω) 384 Audio ICs BA527 Measurement circuit Application example External dimensions (Units: mm) 385