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TPA3003D2PFBG4 Fiches technique(PDF) 4 Page - Texas Instruments |
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TPA3003D2PFBG4 Fiches technique(HTML) 4 Page - Texas Instruments |
4 / 34 page TPA3003D2 SLOS406A − FEBRUARY 2003 − REVISED MARCH 2003 4 www.ti.com Terminal Functions TERMINAL I/O DESCRIPTION NO. NAME I/O DESCRIPTION AGND 9, 10, 26 − Analog ground for digital/analog cells in core AVCC 33 − High-voltage analog power supply (8.5 V to 14 V) AVDD 29 O 5-V Regulated output AVDDREF 7 O 5-V Reference output—provided for connection to adjacent VREF terminal. BSLN 13 I/O Bootstrap I/O for left channel, negative high-side FET BSLP 24 I/O Bootstrap I/O for left channel, positive high-side FET BSRN 48 I/O Bootstrap I/O for right channel, negative high-side FET BSRP 37 I/O Bootstrap I/O for right channel, positive high-side FET COSC 28 I/O I/O for charge/discharging currents onto capacitor for ramp generator triangle wave biased at V2P5 FADE 30 I Input for controlling volume ramp rate when cycling SD or during power-up. A logic low on this pin places the amplifier in fade mode. A logic high on this pin allows a quick transition to the desired volume setting. LINN 6 I Negative differential audio input for left channel LINP 5 I Positive differential audio input for left channel LOUTN 16, 17 O Class-D 1/2-H-bridge negative output for left channel LOUTP 20, 21 O Class-D 1/2-H-bridge positive output for left channel MUTE 34 I A logic high on this pin disables the outputs. A low on this pin enables the outputs. NC 31, 32, 35 − Not internally connected PGNDL 18, 19 − Power ground for left channel H-bridge PGNDR 42, 43 − Power ground for right channel H-bridge PVCCL 14, 15 − Power supply for left channel H-bridge (tied to pins 22 and 23 internally), not connected to PVCCR or AVCC. PVCCL 22, 23 − Power supply for left channel H-bridge (tied to pins 14 and 15 internally), not connected to PVCCR or AVCC. PVCCR 38,39 − Power supply for right channel H-bridge (tied to pins 46 and 47 internally), not connected to PVCCL or AVCC. PVCCR 46, 47 − Power supply for right channel H-bridge (tied to pins 38 and 39 internally), not connected to PVCCL or AVCC. REFGND 12 − Ground for gain control circuitry. Connect to AGND. If using a DAC to control the volume, connect the DAC ground to this terminal. RINP 3 I Positive differential audio input for right channel RINN 2 I Negative differential audio input for right channel ROSC 27 I/O Current setting resistor for ramp generator. Nominally equal to 1/8*VCC ROUTN 44, 45 O Class-D 1/2-H-bridge negative output for right channel ROUTP 40, 41 O Class-D 1/2-H-bridge positive output for right channel SD 1 I Shutdown signal for IC (low = shutdown, high = operational). TTL logic levels with compliance to VCC. VCLAMPL 25 − Internally generated voltage supply for left channel bootstrap capacitors. VCLAMPR 36 − Internally generated voltage supply for right channel bootstrap capacitors. VOLUME 11 I DC voltage that sets the gain of the amplifier. VREF 8 I Analog reference for gain control section. V2P5 4 O 2.5-V Reference for analog cells, as well as reference for unused audio input when using single-ended inputs. |
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