TDA7449

TDA7449 Digital tone control audio processor Datasheet - production data Description The TDA7449 is a volume tone (bass and treble) ) SO20 ct(s Features rodu  Input multiplexer – Two stereo inputs P – 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 combined 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) 16 15 14 RB G VOLUME TREBLE BASS SPKR ATT LEFT 5 LOUT 7 R-IN1 100K 6 R-IN2 100K 0/30dB 2dB STEP I2CBUS DECODER + LATCHES 19 SCL 20 SDA 18 DIG_GND G VOLUME TREBLE BASS SPKR ATT RIGHT VREF INPUT MULTIPLEXER + GAIN 11 MUXOUTR SUPPLY RB 17 12 13 1 TREBLE(R) BIN(R) BOUT(R) CREF 4 ROUT 2 3 VS AGND D98AU847A September 2014 This is information on a product in ...