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TPA3112D1 データシート(PDF) 5 Page - Texas Instruments |
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TPA3112D1 データシート(HTML) 5 Page - Texas Instruments |
5 / 27 page TPA3112D1 www.ti.com SLOS654C – SEPTEMBER 2009 – REVISED JULY 2012 PIN FUNCTIONS PIN I/O DESCRIPTION NAME Pin # Shutdown logic input for audio amp(LOW = outputs Hi-Z, HIGH = outputs enabled). SD 1 I TTL logic levels with compliance to AVCC. Open drain output used to display short circuit or dc detect fault status. Voltage compliant to AVCC. Short circuit faults can be set to auto-recovery by connecting FAULT 2 O FAULT pin to SD pin. Otherwise both the short circuit faults and dc detect faults must be reset by cycling PVCC. GND 3 Connect to local ground GND 4 Connect to local ground GAIN0 5 I Gain select least significant bit. TTL logic levels with compliance to AVCC. GAIN1 6 I Gain select most significant bit. TTL logic levels with compliance to AVCC. AVCC 7 P Analog supply. AGND 8 Analog supply ground. Connect to the thermal pad. High-side FET gate drive supply. Nominal voltage is 7V. May also be used as GVDD 9 O supply for PLILMIT divider. Add a 1 μF cap to ground at this pin. Power limit level adjust. Connect directly to GVDD pin for no power limiting. Add a PLIMIT 10 I 1 μF cap to ground at this pin. INN 11 I Negative audio input. Biased at 3V. INP 12 I Positive audio input. Biased at 3V. NC 13 Not connected AVCC 14 P Connect AVCC supply to this pin PVCC 15 P Power supply for H-bridge. PVCC pins are also connected internally. PVCC 16 P Power supply for H-bridge. PVCC pins are also connected internally. BSP 17 I Bootstrap I/O for positive high-side FET. OUTP 18 O Class-D H-bridge positive output. PGND 19 Power ground for the H-bridges. OUTP 20 O Class-D H-bridge positive output. BSP 21 I Bootstrap I/O for positive high-side FET. BSN 22 I Bootstrap I/O for negative high-side FET. OUTN 23 O Class-D H-bridge negative output. PGND 24 Power ground for the H-bridges. OUTN 25 O Class-D H-bridge negative output. BSN 26 I Bootstrap I/O for negative high-side FET. PVCC 27 P Power supply for H-bridge. PVCC pins are also connected internally. PVCC 28 P Power supply for H-bridge. PVCC pins are also connected internally. Copyright © 2009–2012, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Link(s): TPA3112D1 |
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