TEA6420L

The TEA6420L is a kind of bus-controlled audio matrix. It switches 5 stereo audio on 4 stereo outputs. All the switching possibilities are changed through the I2C BUS.

There are some features of TEA6420L as follows: (1)5 stereo inputs; (2)4 stereo outputs; (3)gain control 0/2/4/6dB/mute for each output; (4)cascadable (2 different addresses); (5)serial bus controlled; (6)very low noise; (7)very low distortion.

The following is about the maximum ratings of TEA6420L: (1)VCC, supply voltage: 10.2 V; (2)Topr, operating ambient temperature: -20 to +85; (3)Tstg, storage temperature: -55 to +150; (4)Rth(j-a), junction-ambient thermal resistance: 75/W.

The last one is about the electrical characteristics of TEA6420L(TA=25, VS=9 V, RL=10 k, RG=600, f=1 kHz): (1)VS, supply voltage: 8 V min, 9 V typ and 10.2 V max; (2)IS, supply current: 5 mA typ and 8 mA max; (3)SVR, ripple rejection: 80 dB when WIN=500 mVRMS, BW=20 to 20kHz; (4)VIN, input DC level: 5 V typ; (5)RI, input resistance: 30 k min and 50 k typ; (6)CS, channel seperation: 90 dB typ at  WIN=500 mVRMS, BW=20 to 20kHz; (7)VOUT, output DC level: 5 V; (8)ROUT, output resistance: 50.