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TDA7449 数据表(PDF) 4 Page - STMicroelectronics |
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TDA7449 数据表(HTML) 4 Page - STMicroelectronics |
4 / 19 page TDA7449 4/19 Note: 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. 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 AUDIO OUTPUTS VCLIP Clipping Level d = 0.3% 2.1 2.6 VRMS RL Output Load Resistance 2 K Ω RO Output Impedance 10 40 70 W VDC DC Voltage Level 3.8 V GENERAL ENO Output Noise All gains = 0dB; BW = 20Hz to 20KHz flat 515 µV Et Total Tracking Error AV = 0 to -24dB 0 1 dB AV = -24 to -47dB 0 2 dB S/N Signal to Noise Ratio All gains 0dB; VO = 1VRMS ; 106 dB SC Channel Separation Left/Right 80 100 dB d Distortion AV = 0; VI = 1VRMS ; 0.01 0.08 % BUS INPUT VIL Input Low Voltage 1 V VIH Input High Voltage 3 V IIN Input Current VIN = 0.4V -5 5 µA VO Output Voltage SDA Acknowledge IO = 1.6mA 0.4 0.8 V Table 5. Electrical Characteristcs (continued) |
类似零件编号 - TDA7449_04 |
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类似说明 - TDA7449_04 |
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