TDA7448 Datasheet | STMicroelectronics

6 CHANNEL VOLUME CONTROLLER PRODUCT PREVIEW s s s s s s 6 CHANNEL INPUTS 6 CHANNEL OUTPUTS VOLUME ATTENUATION RANGE OF 0 TO -79d B VOLUME CONTROL IN 1.0d B STEPS 6 CHANNEL INDEPENDENT CONTROL ALL FUNCTION ARE PROGRAMMABLE VIA SERIAL BUS SO20 ORDERING NUMBER: TDA7448 DESCRIPTIO The TDA7448 is a 6 channel volume controller for quality audio applications in Multi-Channels Audio Systems Thanks to the used BIPOLAR/CMOS Technology, BLOCK DIAGRAM 2 50K IN2 19 50K IN3 3 50K IN4 18 50K IN5 4 50K IN6 17 50K GND CREF 11 20 VS SUPPLY 1 I2C BUS DECODER 10 9 12 SCL SDA ADDR 16 VOLUME OUT6 5 VOLUME OUT5 15 VOLUME OUT4 6 VOLUME OUT3 14 VOLUME OUT2 7 VOLUME Low Distortion, Low Noise and DC stepping are obtained. IN1 OUT1 D02AU1396 December 2002 This is preliminary information on a new product now in development. Details are subject to change without notice. 1/13 ABSOLUTE MAXIMUM RATINGS Symbol VS Tamb Tstg Operating Supply Voltage Operating Ambient Temperature Storage Temperature Range Parameter Value 10.5 -10 to 85 -55 to 150 Unit V °C °C PIN CONNECTION VS IN1 IN3 IN5 OUT5 OUT3 OUT1 N.C. SDA SCL 1 2 3 4 5 6 7 8 9 10 D02AU1397 20 19 18 17 16 15 14 13 12 11 CREF IN2 IN4 IN6 OUT6 OUT4 OUT2 N.C. ADDR GND THERMAL DATA Symbol Rth j-pin Parameter thermal Resistance junction-pins Value 150 Unit °C/W QUICK REFERENCE DATA Symbol VS VCL THD S/N SC Supply Voltage Max Input Signal Handling Total Harmonic Distortion V = 1Vrms f =1KHz Signal to Noise Ratio Vout = 1Vrms Channel Separation f = 1KHz Volume Control (1d B step) Mute Attenuation -79 90 Parameter Min. 4.75 2 0.01 100 90 0 0.1 Typ. 9 Max. 10 Unit V Vrms % d B d B d B d B 2/13 ELECTRICAL CHARACTERISTCS (refer to the test circuit Tamb = 25°C, VS = 9V, RL = 10KΩ, RG = 600Ω, unless otherwise specified) Symbol Parameter Test Condition Min. Typ. Max. Unit SUPPLY VS IS SVR Supply Voltage Supply Current Ripple Rejection 4.75 9 7 80 10 V m A d B INPUT STAGE RIN VCL SIN Input Resistance Clipping Level Input...