TDA7449 Datasheet | STMicroelectronics

Description The TDA7449 is a volume tone (bass and treble) ) SO20 ct(s Features rodu - Input multiplexer - Two stereo inputs - Selectable input gain for optimal adaptation te to different sources le - One stereo output so - Treble and bass control in 2.0 db steps b - Volume control in 1.0 db steps - O - Two speaker attenuators: ) - Two independent speaker controls in t(s 1.0 db steps to facilitate balance c - Independent mute function du - All functions are programmable via serial bus balance (left/right) processor for quality audio applications in TV systems. Selectable input gain is provided. A serial bus controls all functions. The AC signal setting is obtained by resistor networks and switches bined with operational amplifiers. Bipolar/CMOS technology used allows obtaining low distortion, low noise and DC stepping. Table 1. Device summary Order code Package Packing TDA7449D13TR SO20 Tape and reel lete Pro 8 o L-IN1 100K bs 9 O L-IN2 100K Figure 1. Block diagram MUXOUTL 10 TREBLE(L) BIN(L) BOUT(L) VOLUME TREBLE BASS SPKR ATT LEFT 5 LOUT 7 R-IN1 100K 6...