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TDA7575B bảng dữ liệu(PDF) 18 Page - STMicroelectronics

tên linh kiện TDA7575B
Giải thích chi tiết về linh kiện  2 x 75W multifunction dual-bridge power amplifier with integrated digital diagnostics
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
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TDA7575B bảng dữ liệu(HTML) 18 Page - STMicroelectronics

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I2C bus interface
TDA7575B
18/32
I2C PIN (PIN16) < 1.5V: I2C bus interface deactivated
I2C PIN (PIN16) > 2.5V: I2C bus interface activated
It is also possible to let I2C PIN floating to deactivate the I2C bus interface, or to short I2C
PIN to VCC to activate it.
In particular:
I2C ENABLED: I2C pin (PIN16) > 2.5V
–
STD MODE: Vstby (PIN5) > 3.5V, IB2(D1)=0
–HE MODE: Vstby (PIN5) > 3.5V, IB2(D1)=1
–PLAY MODE: Vmute (pin 4) >3.5V, IB1 (D2) = 1
The amplifier can always be switched off by putting Vstby to 0V, but with I
2C enabled it can
be turn on only through I2C (with Vstby>3.5V).
I2C DISABLED: I2C pin (PIN16) < 1.5V
–
STD MODE: 3.5V < st-by (PIN5) < 5
–HE MODE: Vstby (PIN5) > 7V
–PLAY MODE: Vmute (pin 4) >3.5V
For both STD and HE MODE the play/mute mode can be set acting on Vmute pin.
When I2C BUS is disabled, when a fault is detected PIN 14 (CD-OUT) is pulled down by the
internal logic circuitry. The faults detected are the short circuit to ground, to VCC and across
the load (after an aver current detection).



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