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TPA0172PWPG4 Folha de dados(PDF) 3 Page - Texas Instruments |
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TPA0172PWPG4 Folha de dados(HTML) 3 Page - Texas Instruments |
3 / 37 page TPA0172 2W STEREO AUDIO POWER AMPLIFIER WITH I2C BUS SLOS327C − AUGUST 2000 − REVISED MAY 2001 3 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 Terminal Functions TERMINAL I/O DESCRIPTION NAME NO. I/O DESCRIPTION ADDRESS0 4 I Bit 0 of user-setable portion of device’s I2C address. ADDRESS1 10 I Bit 1 of user-setable portion of device’s I2C address. BYPASS 21 Tap to voltage divider for internal midsupply bias generator. GND 1, 13 Ground connection for circuitry. Connect to thermal pad LHPIN 7 I Left-channel headphone input, selected when SE/BTL is held high, or programmed via I2C. LIN 5 I Common left input for fully differential input. AC ground for single-ended inputs. LLINEIN 6 I Left-channel line input, selected when SE/BTL is held low, or programmed via I2C. LOUT+ 2 O Left-channel positive output in BTL mode, and positive output in SE mode. LOUT− 24 O Left-channel negative output in BTL mode, and high impedance in SE mode. PC-BEEP 3 I The input for PC-BEEP mode which is enabled when a > 1-V (peak-to-peak) square wave is input to this terminal, when PCB ENABLE is held high, or programmed via I2C. If not used, ground this terminal. I2CVDD 16 I The voltage on this terminal sets the trip points for the I2C interface. If the system I2C bus is running at 3.3 V, then tie this terminal to 3.3 V. If the system I2C bus is running at 5 V, then tie this terminal to 5 V. PVDD 8, 19 I Power supply RHPIN 17 I Right-channel headphone input, selected when SE/BTL is held high, or programmed via I2C. RIN 9 I Common right input for fully differential input. AC ground for single-ended inputs. RLINEIN 18 I Right-channel line input, selected when SE/BTL is held low, or programmed via I2C. ROUT+ 12 O Right-channel positive output in BTL mode, and positive output in SE mode. ROUT− 14 O Right-channel negative output in BTL mode, and high impedance in SE mode. SCL 23 I I2C clock line SDA 15 Serial data line of the I2C bus. Pullup resistor must comply with the I2C standard: minimum value = 3 k Ω, maximum value = 19 k Ω. Pull up to I2CVDD SE/BTL 11 I Input MUX control input. When this terminal is held high, the LHPIN or RHPIN, and the SE output are selected. When this terminal is held low, the LLINEIN or RLINEIN, and the BTL output are selected. This functionality can also be programmed via I2C. SHUTDOWN 22 I When held low, this terminal places the device in the shutdown mode, except for the PC-BEEP input and the I2C bus. VDD 20 I Power supply |
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