BA3118L Datasheet | ROHM

Audio ICs General-purpose dual line amplifier The BA3118L is a dual-channel line amplifier with a flat frequency characteristic. It has been designed for use in radio cassette players and car stereos. The feedback resistors are all on the chip, which reduces the number of external ponents required and simplifies PCB design. The gain can be set to one of 10 gain settings from 6d B to 20d B (6d B, 8d B, 10d B, 10.9d B, 12.4d B, 13.4d B, 15.1d B, 16d B, 17.9d B and 20d B), and external fine trimming is possible. FApplications Car stereos and radio cassette players FFeatures 1) 10 gain settings over the range 6d B to 20d B (max. step 2d B) without external resistors. 2) Low distortion. 3) Good crosstalk characteristics. 4) Low noise. 5) Flat frequency characteristic. 6) Two channels on one chip allows pact set design. 7) Pin 9 is not connected which simplifies the PBC GND design. 8) Built-in feedback resistors reduces the number of external ponents required. 9) Low gain variance between the two channels. FAbsolute maximum ratings (Ta = 25_C) FRemended operating conditions (Ta = 25_C) Audio ICs FBlock diagram FElectrical characteristics (unless otherwise noted, Ta = 25_C, VCC = 8.0V, f = 1k Hz and GVC = 20d B) Audio ICs FMeasurement circuit Measurement circuit switch setting table FGain setting pattern diagrams Audio ICs FApplication example Audio ICs FElectrical characteristics curves FExternal dimensions (Units:...