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TDA7449 Datasheet(PDF) 3 Page - STMicroelectronics |
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TDA7449 Datasheet(HTML) 3 Page - STMicroelectronics |
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ELECTRICAL CHARACTERISTICS (refer to the test circuit Tamb =25 °C, VS = 9V, RL= 10KΩ, RG = 600 Ω, all controls flat (G = 0dB), unless otherwise specified) Symbol Parameter Test Condition Min. Typ. Max. Unit SUPPLY VS Supply Voltage 6 9 10.2 V IS Supply Current 7 mA SVR Ripple Rejection 60 90 dB INPUT STAGE RIN Input Resistance 100 K Ω VCL Clipping Level THD = 0.3% 2 2.5 Vrms SIN Input Separation The selected input is grounded through a 2.2 µ capacitor 80 100 dB Ginmin Minimum Input Gain -1 0 1 dB Ginman Maximum Input Gain 30 dB Gstep Step Resolution 2 dB VOLUME CONTROL CRANGE Control Range 45 47 49 dB AVMAX Max. Attenuation 45 47 49 dB ASTEP Step Resolution 0.5 1 1.5 dB EA Attenuation Set Error AV = 0 to -24dB -1.0 0 1.0 dB AV = -24 to -47dB -1.5 0 1.5 dB ET Tracking Error AV = 0 to -24dB 0 1 dB AV = -24 to -47dB 0 2 dB VDC DC Step adjacent attenuation steps from 0dB to AV max 0 0.5 3mV mV Amute Mute Attenuation 80 100 dB BASS CONTROL (1) Gb Control Range Max. Boost/cut +12.0 +14.0 +16.0 dB BSTEP Step Resolution 1 2 3 dB RB Internal Feedback Resistance 18.75 25 31.25 K Ω TREBLE CONTROL (1) Gt Control Range Max. Boost/cut +13.0 +14.0 +15.0 dB TSTEP Step Resolution 1 2 3 dB SPEAKER ATTENUATORS CRANGE Control Range 76 dB SSTEP Step Resolution 0.5 1 1.5 dB EA Attenuation Set Error AV = 0 to -20dB -1.5 0 1.5 dB AV = -20 to -56dB -2 0 2 dB VDC DC Step adjacent attenuation steps 0 3 mV Amute Mute Attenuation 80 100 dB NOTE1: 1) The device is functionally good at Vs = 5V. a step down, on Vs, to 4V does’t reset the device. 2) BASS and TREBLE response: The center frequency and the response quality can be chosen by the external circuitry. TDA7449 3/17 |
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